Publications – Books & Journals

Books and Book Chapters

  1. Rittmann, B.E., E.A. Seagren, B.A. Wrenn, A.J. Valocchi, L. Raskin, and C. Ray, In SituBioremediation, Second ed., Noyes Publications, Park Ridge, N.J., 1994.
  2. National Research Council, Committee on Environmental Remediation at Naval Facilities, Environmental Cleanup at Naval Facilities: Risk-Based Methods , National Academy Press, Washington, D.C., 1999.
  3. National Research Council, Committee on Environmental Remediation at Naval Facilities, Environmental Cleanup at Naval Facilities: Adaptive Site Management, National Academy Press, Washington, D.C., 2003.
  4. Valocchi, A.J. and B.L. Herzog. Mathematical modeling of the transport of pollutants from hazardous waste landfills, pp. 153-164 in Land Disposal of Hazardous Wastes: Engineering and Environmental Issues, J.R. Gronow, A.N. Schofield and R.K. Jain, eds., Ellis Horwood, Ltd., Chichester, England, 1988.
  5. Valocchi, A.J., and H.A.M. Quinodoz. Impact of small-scale variability upon the transport of reactive contaminants, pp. 355-380, in Fate and Transport of Pollutants in Soils and Subsoils ,D. Petruzzelli and F.G. Helfferich, eds., Springer Verlag, Berlin, 1993.
  6. Das, B., R. Govindaraju, G. Kluitenberg, A.J. Valocchi, and J.M. Wraith, Theory and applications of time moment analysis to study the fate of reactive solutes in soil, Chapter 6, pp. 239-280 in Stochastic Methods in Subsurface Contaminant Hydrology , R. Govindaraju (ed.), ASCE, 2002.
  7. Simunek, J. and A.J. Valocchi, Geochemical Transport, Chapter 6.9 in Methods of Soil Analysis, Part I, Physical Methods , C. Topp and J. Dane, eds., Soil Science Society of America, Madison, WI, 2002.
  8. Valocchi, A.J., P.A. Herrera, and H. Viswanathan, Incorporating transverse mixing into streamline-based simulation of transport in heterogeneous aquifers, pp. 294-304 inGroundwater Quality Modeling and Management Under Uncertainty, Srikanta Mishra, Editor, American Society of Civil Engineers, 2003.
  9. Demissie, Y., Valocchi, A., Minsker, B. & Bailey, B., Bias-Corrected Groundwater Model Prediction Uncertainty Analysis, In: ModelCARE2007 Calibration and Reliability in Groundwater Modeling: Credibility in Modeling , K. Kovar (Editor), IAHS Publ. 320-3, 2008
  10. Valocchi, A.J., Hydrogeochemical Models, Chapter 4 in Delivery And Mixing In The Subsurface:Processes and Design Principles for In-Situ Remediation, P.K. Kitanidis and P.L. McCarty, eds., DoD SERDP/ESTCP Monograph Series, Springer, 2012.
  11. Yoon, H., Q. Kang, A.J. Valocchi, Lattice Boltzmann-Based Approaches for Pore-Scale Reactive Transport, pp. 393-431 in Pore-Scale Geochemical Processes, Reviews in Mineralogy & Geochemistry,  v. 80, C. Steefel, S. Emmanuel, and L. Anovitz (eds.),  2015, http://dx.doi.org/10.2138/rmg.2015.80.12

Journal Publications

  1. Valocchi, A.J., R.L. Street, and P.V. Roberts, Transport of ion-exchanging solutes in groundwater: Chromatographic theory and field simulation, Water Resour. Res., 17(5), 1517-1527, 1981.
  2. Valocchi, A.J., P.V. Roberts, G.A. Parks, and R.L. Street, Simulation of the transport of ion-exchanging solutes using laboratory-determined chemical parameter values,Ground Water, 19(6), 600-607, 1981.
  3. Roberts, P.V. and A.J. Valocchi, Principles of organic contaminant behavior during artificial recharge, The Science of the Total Environment, 21, 161-172, 1981.
  4. Roberts, P.V., M. Reinhard, and A.J. Valocchi, Movement of organic contaminants in groundwater: Implication for water supply, J. Amer. Water Works Assoc., 74, 408-413, Aug., 1982.
  5. Valocchi, A.J. and P.V. Roberts, Attenuation of groundwater contaminant pulses, J. Hyd. Engr., ASCE, 109(12), 1665-1682, 1983.
  6. Valocchi, A.J., Describing the transport of ion-exchanging contaminants using an effective Kd approach, Water Resour. Res., 20(4), 499-503, 1984.
  7. Valocchi, A.J., Validity of the local equilibrium assumption for modeling sorbing solute transport through homogeneous soils, Water Resour. Res., 21(6), 808-820, 1985.
  8. Valocchi, A.J., Effect of radial flow on deviations from local equilibrium during sorbing solute transport through homogeneous soils, Water Resour. Res., 22(12), 1693-1701, 1986.
  9. Parker, J.C. and A.J. Valocchi, Constraints on the validity of equilibrium and first-order kinetic transport models in structured soils, Water Resour Res., 22(3), 399-407, 1986.
  10. Valocchi, A.J., Theoretical analysis of deviations from local equilibrium during sorbing solute transport through idealized stratified aquifers, J. Contam. Hydrol., 2, 191-207, 1988.
  11. Valocchi, A.J., Spatial moment analysis of the transport of kinetically adsorbing solutes through stratified aquifers, Water Resour. Res., 25(2), 273-279, 1989.
  12. Baveye, P. and A.J. Valocchi, An evaluation of mathematical models of the transport of biologically reacting solutes in saturated soils and aquifers, Water Resour. Res., 25(6), 1413-1421, 1989.
  13. Meyer, P.D., A.J. Valocchi, S.F. Ashby, and P.E. Saylor, A numerical investigation of the conjugate gradient method as applied to three-dimensional groundwater flow problems in randomly heterogeneous porous media, Water Resour. Res., 25(6), 1440-1446, 1989.
  14. Valocchi, A.J., Use of temporal moment analysis to study reactive solute transport in aggregated porous media, Geoderma, 46, 233-247, 1990.
  15. Odencrantz, J.E., W. Bae, A.J. Valocchi, and B.E. Rittmann, Stimulation of biologically active zones (BAZ’s) in porous media by electron-acceptor injection, J. Contam.Hydrol., 6, 37-52, 1990.
  16. Bae, W., J.E. Odencrantz, B.E. Rittmann, and A.J. Valocchi, Transformation kinetics of trace-level halogenated organic contaminants in a biologically active zone (BAZ) induced by nitrate injection, J. Contam. Hydrol., 6, 53-68, 1990.
  17. Eheart, J.W., M.R. Rahman, S.M. Keith, and A.J. Valocchi, A game-theoretic parameter configuration technique for aquifer restoration design, J. Contam. Hydrol., 6(3), 205-226,1990.
  18. Elnawawy, O.A., A.J. Valocchi, and A.M. Ougouag, The cell analytical-numerical method for solution of the advection-dispersion equation: Two-dimensional problems,Water Resour. Res., 26(11), 2705-2716, 1990.
  19. Valocchi, A.J. and M. Malmstead, Accuracy of operator splitting for advection-dispersion-reaction problems, Water Resour. Res., 28(5), 1471-1476, 1992.
  20. Mahinthakumar, G. and A.J. Valocchi, Application of the Connection Machine to flow and transport problems in three-dimensional heterogeneous aquifers, Adv. WaterResour., 15, 289-302, 1992.
  21. Morgan, D.R., J.W. Eheart, and A.J. Valocchi, Aquifer remediation design under uncertainty using a new chance constrained programming technique, Water Resour. Res., 29(3), 551-562, 1993.
  22. Seagren, E.A., B.E. Rittmann, and A.J. Valocchi, Quantitative evaluation of flushing and biodegradation for enhancing in situ dissolution of nonaqueous phase liquids, J.Contam. Hydrol., 12, 103-132, 1993.
  23. Quinodoz, H.A.M. and A.J. Valocchi, Stochastic analysis of the transport of kinetically adsorbing solutes in aquifers with randomly heterogeneous hydraulic conductivity,Water Resour. Res., 29(9), 3227-3240, 1993.
  24. Meyer, P.M., A.J. Valocchi, and J.W. Eheart, Monitoring network design to provide initial detection of groundwater contamination, Water Resour. Res., 30(9), 2647-2660, 1994.
  25. Seagren, E.A., B.E. Rittmann, and A.J. Valocchi, Quantitative evaluation of the enhancement of NAPL-pool dissolution by flushing and biodegradation, Environ. Sci. and Tech., 28(5), 833-839, 1994.
  26. Malmstead, M.J., F. Brockman, A.J. Valocchi, and B.E. Rittmann, Modeling biofilm biodegradation requiring cosubstrates: The quinoline example, Water Science andTechnology , 31(1), 71-84, 1995.
  27. Ray, C.,C.W. Boast, T.R. Ellsworth, and A.J. Valocchi, Simulation of the impact of agricultural management practices on chemical transport in macroporous soils,Transac. Amer. Soc. Agric. Engr. , 39(5), 1697-1707, 1996.
  28. Leitao, T.E., J.P. Lobo-Ferreira, and A.J. Valocchi, Application of a reactive transport model for interpreting non-conservative tracer experiments: the Rio Maior case-study, J. Contam. Hydrol., 24(2), 167-181, 1996.
  29. Oya, S., A.J. Valocchi, and T. Furuichi. Numerical modeling of transport and cometabolic degradation of trichloroethylene in groundwater, J. of Groundwater Hydrology (Japan), 39(1), 17-31, 1997.
  30. Oya, S., and A.J. Valocchi. Characterization of traveling waves and analytical estimation of pollutant removal in one-dimensional subsurface bioremediation modeling,Water Resources Research, 33(5), 1117-1127, 1997.
  31. Espinoza, C., and A.J. Valocchi. Stochastic analysis of one dimensional transport of kinetically absorbing solutes in chemically hetergeneous aquifers, Water Resources Research, 33(11), 2429-2445, 1997.
  32. Ray, C., T.R. Ellsworth, A.J. Valocchi, and C.W. Boast, An improved dual porosity model for chemical transport in macroporous media, Journ. Hydrology, 193, 270-292, 1997
  33. Storck, P., J.W. Eheart, and A.J. Valocchi, A method for the optimal location ofmonitoring wells for detection of groundwater contamination in three-dimensional heterogeneous aquifers, Water Resources Research, 33(4), 2081-2088, 1997.
  34. Oya, S., and A.J. Valocchi. Analytical approximation of the biodegradation rate for in situ bioremediation of groundwater under ideal radial flow conditions, J. Contam.Hydrol. 31(3-4),275-294, 1998.
  35. Espinoza, C., and A.J. Valocchi. Temporal moments analysis of transport in a chemically heterogeneous porous medium, ASCE Journal of Hydrologic Engineering, 3(4), 276-284, 1998.
  36. Viswanathan, H., B.A. Robinson, A.J. Valocchi, and I.R. Triay. A reactive transport model of neptunium migration from the potential repository at Yucca Mountain, J. Hydrology, in press, 1998.
  37. Tebes-Stevens, C., A.J. Valocchi, J.M. Van Briesen, and B. E. Rittmann. Multicomponent transport with coupled geochemical and microbiological reactions: model description and example simulations, J. Hydrology, 209, 8-26, 1998.
  38. Viswanathan, H., B.A. Robinson, A.J. Valocchi, and I.R. Triay. A reactive transport model of neptunium migration from the potential repository at Yucca Mountain, J.Hydrology , 209, 251-280, 1998.
  39. Oya, S. and A.J. Valocchi, Transport and biodegradation of solutes in stratified aquifers under enhanced in situ bioremediation conditions, Water Resources Research , 34(12), 3323-3334, 1998.
  40. Seagren, E.A., B.E. Rittmann, and A.J. Valocchi, An experimental investigation of NAPL pool dissolution enhancement by flushing, J. Contam. Hydrol., 37(1-2), 111-138, 1999.
  41. Seagren, E.A., B.E. Rittmann, and A.J. Valocchi, A critical evaluation of the local-equilibrium assumption in modeling NAPL-pool dissolution, J. Contam. Hydrol., 39, 109-135, 1999
  42. Mehnert, E., A.J. Valocchi, M. Heidari, S.G. Kapoor and P. Kumar, Estimating transmissivity from the water level fluctuations of simusoidally forced well, Ground Water ,37(6), 855-860, 1999.
  43. Robinson, B., H. Viswanathan, and A.J. Valocchi, Efficient numerical techniques for modeling multicomponent groundwater transport based upon simultaneous solution of strongly coupled subsets of chemical components, Adv. Water Resour., 23(4), 307-324, 2000.
  44. Tebes-Stevens, C. and A.J. Valocchi, Calculation of reaction parameter sensitivity cofficients in multicomponent subsurface transport models, Adv. Water Resour., 23(6), 591-611, 2000.
  45. Reed, P., B. Minsker, and A.J. Valocchi, Cost effective long-term groundwater monitoring design using a genetic algorithm and global mass interpolation, Water Resour. Res., 36(12), 3731-3741, 2000.
  46. Seagren, E.A., B.E. Rittmann, and A.J. Valocchi, Bioenhancement of NAPL pool dissolution: experimental evaluation, J. Contam. Hydrol., submitted, 2000.
  47. Tebes-Stevens, C., F. Espinoza, and A.J. Valocchi, Evaluating the sensitivity of a subsurface multicomponent reactive transport model with respect to transport and reaction parameters, J. Contam. Hydrol., special issue on Practical Applications of Coupled Process Models in Subsurface Environments, in press, 2001.
  48. Knutson, C., C.J. Werth, and A.J. Valocchi, Pore scale modeling of apparent mass tranfer limitations during equilibrium-controlled NAPL dissolution, Water Resour. Res., 37(12), 2951-2964, 2001.
  49. Seagren, E.A., B.E. Rittmann, and A.J. Valocchi, Bioenhancement of NAPL pool dissolution: Experimental evaluation, J. Contam. Hydrol., 55(1-2), 57-85, 2002.>p>
  50. Valocchi, A.J. and C.J. Werth, Using WWW-based interactive simulation to enhance student understanding of how coupled processes affect groundwater pollutant fate and transport, J. Engr. Educ., submitted, 2001.
  51. Toupiol, C., T. Willingham, A.J. Valocchi, C.J. Werth, I.G. Krapac, T.D. Stark, and D.E. Daniel, Long-term tritium transport through a field-scale compacted earthen liner, J. Geotech. Geoenviron. Engr., 128(8), 640-650, 2002.
  52. Yoon, H-Y, A.J. Valocchi and C.J. Werth, Modeling the influence of water content on soil vapor extraction, Vadose Zone J., 2, 368-381, August 2003.
  53. Nambi, I.M, C.J. Werth, R.A. Sanford, and A.J. Valocchi, Pore-scale analysis of anaerobic halo-respiring bacterial growth along the transverse mixing zone of an etched silicon pore network, Environ. Sci. Tech. , 37(24), 5617-5624, 2003.
  54. Chu, Y., C.J. Werth, A.J. Valocchi, and H.Y. Yoon, Magnetic resonance imaging of nonaqueous phase liquid during soil vapor extraction in heterogeneous porous media,J. Contam Hydrol., 73(1-4), 15-37, 2004.
  55. Valocchi, A.J. and C.J. Werth, Web-based interactive simulation of groundwater pollutant fate and transport, Computer Appl. in Engr. Educ., 12(2), 75-83, 2004.
  56. Viswanathan, H. and A.J. Valocchi, Comparison of streamtube and three-dimensional models of reactive transport in heterogeneous media,  IAHR J. Hydr. Res., 42,141-145, 2004.
  57. Willingham, T.W.,  C.J. Werth, A.J. Valocchi, I.G. Krapac, C. Toupiol, T.D. Stark, and D.E. Daniel, Evaluation of multi-dimensional transport through a field-scale compacted soil liner, J. Geotech. Geoenviron. Engr., 130(9),887-895, 2004.
  58. Hammond, G.E., A.J. Valocchi and P.C. Lichtner, Application of Jacobian-free Newton-Krylov with Physics-Based Preconditioning to Biogeochemical Transport, Adv. Water Resour., 25, 359-376, 2005.
  59. Michael, W., B. S. Minsker, D. Tcheng, A.J. Valocchi and J. Quinn, Integrating data sources to improve hydraulic head predictions: A hierarchical machine learning approach, Water Resour. Res., 41(3) 10.1029/2003WR002802, 2005.
  60. Knutson, C., C.J. Werth and A.J. Valocchi, Pore scale simulation of biomass growth along the transverse mixing zone of a model 2D porous medium, Water Resour. Res.,  41(7), W07007, doi:10.1029/2004WR003459, 2005.
  61.  Liedl, R., A. J. Valocchi, P. Dietrich, and P. Grathwohl, Finiteness of steady state plumes, Water Resour. Res., 41, W12501, doi:10.1029/2005WR004000, 2005.
  62. Walker, D., P. Cello, A.J. Valocchi and B. Loftis, Flow dimensions corresponding to stochastic models of heterogeneous transmissivity, Geophys. Res. Letters, 33, doi: 10.1029/2006GL025695, 2006.
  63. Herrera, P. and A.J. Valocchi, Positive solution of two-dimensional solute transport in aquifers, Ground Water, 44(6), 803-813, 2006.
  64. Cirpka, O. and A.J. Valocchi, Two-dimensional concentration distribution for mixing-controlled bioreactive transport in steady state, Advances in Water Resources, 30(6/7), 1668-1679, 2007.
  65. Knutson, C., A.J. Valocchi and C.J. Werth, Comparison of continuum and pore-scale models of substrate biodegradation under transverse mixing conditions, Advances in Water Resources., 30(6/7), 1421-1431, 2007.
  66. Yoon, H., A.j. Valocchi, and C.J. Werth, Effect of soil moisture dynamics on dense nonaqueous phase liquid (DNAPL) spill zone architecture in heterogeneous porous media, J. Contam. Hydrol., 90(3-4), 159-184, 2007.
  67. Hill, D.J., B.S. Minsker, A.J. Valocchi, V. Babovic. Upscaling models of solute transport in porous media through genetic programming knowledge discovery, J.Hydroinformatics, 9(4): 251-266, 2007.
  68. Acharya, R., A.J. Valocchi and C.J. Werth, Pore-scale simulation of dispersion and reaction along a transverse mixing zone in two-dimensional porous media, WaterResour. Res, 43, W10435, doi:10.1029/2007WR005969, 2007.
  69. Willingham, T., C.J. Werth, and A.J. Valocchi, “Evaluation of the Effect of Porous Media Structure on Mixing-Controlled Reactions using Pore-Scale Modeling andMicromodel Experiments,” Environmental Science and Technology, 42(9), 3185-3193, http://dx.doi.org/10.1021/es7022835, 2008
  70. Yoon, H., C. Zhang, C.Werth, A.J. Valocchi, and A. Webb, Numerical simulation of water flow in three dimensional heterogeneous porous media observed in a magnetic resonance imaging experiment, Water Resour. Res., 44, W06405, doi:10.1029/2007WR006213, 2008.
  71. Yoon, H., C. Werth, A.J. Valocchi, and M. Oostrom, Impact of nonaqueous phase liquid (napl) source zone architecture on mass removal mechanisms in strongly layered heterogeneous porous media during soil vapor extraction, J. Contam. Hydrol., 100(1-2), 58-71, 2008.
  72. Massabo, M., A. Bellin, and A.J. Valocchi, “Spatial moments analysis of kinetically sorbing solutes in bimodal aquifer with bimodal permeability distribution,” WaterResour. Res., 44, W09424, doi:10.1029/2007WR006539, 2008.
  73. Singh, A., B.S. Minsker, and A.J. Valocchi, An Interactive Multi-Objective Optimization Framework for Groundwater Inverse Modeling, Advances in Water Resour.,31(10), 1269-1283, 2008.
  74. Lin Y-F., J. Wang, and A. J. Valocchi, A new GIS approach for estimating shallow groundwater recharge and discharge, Transactions in GIS, 12(4), pp. 459-474, 2008.
  75. Zhang, C. Y., Yoon, H. K., Werth, C. J., Valocchi, A. J., Basu, N. B., and J. W. Jawitz,  Evaluation of simplified mass transfer models to simulate the impacts of source zone architecture on nonaqueous phase liquid dissolution in heterogeneous porous media. J. Contam. Hydrol.,  102(1-2),49-60, 2008.
  76. Lin Y-F., J. Wang, and A. J. Valocchi, PRO-GRADE: GIS toolkits for ground water recharge and discharge estimation, Ground Water, 47(1), 122-128, 2009.
  77. Demissie, Y., A.J. Valocchi, B.S. Minsker, and B. Bailey, Integrating physically-based groundwater flow models with error-correcting data-driven models to improve predictions, J. Hydrol., 364 (3-4). 257-271, 2009.DOI: 10.1016/j.jhydrol.2008.11.007
  78. Cello, P., D.D. Walker, A.J. Valocchi, and B. Loftus, Flow dimension and anomalous diffusion of aquifer tests in fracture networks, Vadose Zone Journal, special issue on fractals, scaling and heterogeneity in soils and other heterogeneous media, invited, doi:10.2136/vzj2008.0040, 8(1), 258-268, 2009..
  79. Nellis, S. R, H. Yoon, C. J. Werth, M. Oostrom, and A. J. Valocchi, Surface and interfacial properties of representative nonaqueous phase liquid mixtures released to the subsurface at the Hanford site in Washington, Vadose Zone Journal, doi:10.2136/vzj2008.0104, 8(2), 343-351,2009
  80. Yoon, H., M. Oostrom. T. W. Wietsma, C.J. Werth, and A.J. Valocchi, Numerical and experimental investigation of DNAPL removal mechanisms in a layered porous medium by means of soil vapor extraction, J. Contam. Hydrol., 109(1-4), 1-13, 2009.
  81. Nakshatrala, K. and A.J. Valocchi, Non-negative mixed finite element formulations for a tensorial diffusion equation, J. Comput. Physics, doi: DOI: 10.1016/j.jcp.2009.05.039, 228, 6726-6752, 2009.
  82. Singh, A., D D. Walker, B.S. Minsker, and A.J. Valocchi, Incorporating subjective and stochastic uncertainty in an interactive multi-objective groundwater calibration framework, Stochastic Environmental Research & Risk Assessment (SERRA), DOI: 10.1007/s00477-010-0384-1,24(6), 881-888, 2010.
  83. Willingham, T., C. Zhang, C.J. Werth, A.J. Valocchi, M. Oostrom, T. Wietsma, Using dispersivity values to quantify the effects of pore-scale flow focusing on enhanced reaction along a transverse mixing zone, Adv. Water Resour., 33(4), 525-535, 2010.
  84. Herrera, P., A.J. Valocchi, and R.D. Beckie, A multidimensional streamline-based method to simulate reactive solute transport in heterogeneous porous media, Adv. Water Resour., 33(7), 711-727, 2010.
  85. Nakshatrala, K. and A.J. Valocchi, Variational structure of the optimal artificial diffusion method for the advection-diffusion equation, International Journal of Computational Mechanics,  7, 559-572, 2010.
  86. Zhang, C., K. Dehoff, N. Hess, M. Oostrom, T. Wietsma, A. Valocchi, B. Fouke, C. Werth, A pore-scale study of transverse mixing induced CaCO3 precipitation and permeability reduction in a model subsurface sedimentary system, Environmental Science & Technology, 44, 7733-38, 2010. (selected for Editor’s Choice Award as one of ES&T’s Best Papers of 2010)
  87. Gopalakrishnan, G, Minsker, B., Valocchi, A.J., Monitoring network design for phytoremediation systems using primary and secondary data sources, Environ. Science & Technology, 45(11), 4846-4853, 2011.
  88. Wang D., M. Hejazi, X. Cai, and A. J. Valocchi, Climate change impact on meteorological, hydrological, and agricultural drought in Central Illinois, Water Resources Research, 47, W09527, doi:10.1029/2010WR009845, 2011.
  89. Hongkyu Yoon, Albert J. Valocchi, Charles J. Werth, and Thomas Dewers, Pore-scale simulation of mixing-induced calcium carbonate precipitation and dissolution in a microfluidic pore network, Water Resources Research,48, W02524, doi:10.1029/2011WR011192, 2012.
  90. Haihu Liu, Y. Zhang, and Albert J. Valocchi, Modeling and simulation of thermocapillary flows using lattice Boltzmann method, Journal of Computational Physics, Volume 231, Issue 12, 20 June , 4433-4453, ISSN 0021-9991, 10.1016/j.jcp.2012.02.015.2012
  91. Haihu Liu, Albert J. Valocchi, and Qinjun Kang, A three-dimensional lattice Boltzmann model for immiscible two-phase flow simulations,  Physical Reviews E, 85, 046309, 10.1103/PhysRevE.85.046309, 2012.
  92. Tianfang Xu, Albert J. Valocchi, Jaesik Cho,Eyal Amir, Use of Machine Learning Methods to Reduce Predictive Error of Groundwater Models, Groundwater, 10.1111/gwat.12061, 2013.
  93. Garcia, T., P. R. Jackson, E.A. Murphy, A.J. Valocchi, M. H. Garcia, Development of a Fluvial Egg Drift Simulator to evaluate the transport and dispersion of Asian carp eggs in rivers, Ecological Model., 263, 211-222, 2013.
  94. Nakshatrala, K., M.K. Mudunuru, and A.J. Valocchi, A numerical framework for diffusion-controlled bimolecular-reactive systems to enforce maximum principles and the non-negative constraint, Journal of Computational  Physics, Volume 253,  Pages 278-307, ISSN 0021-9991, http://dx.doi.org/10.1016/j.jcp.2013.07.010., 2013.
  95. Liu, Haihu,  A. J. Valocchi, Qinjun Kang, and C.J. Werth,  Pore-Scale Simulations of Gas Displacing Liquid in a Homogeneous Pore Network Using the Lattice Boltzmann Method,  Transport in Porous Media, 10.1007/s11242-013-0200-8, 2013.
  96. Tang, Y. and A.J. Valocchi, An Improved Cellular Automaton Method to Model Multispecies Biofilms, Water Research, doi: 10.1016/j.watres.2013.06.055, 2013.
  97. H. Liu, A. J. Valocchi, Y. Zhang, and Q. Kang, Lattice Boltzmann phase-field modeling of thermocapillary flows in a confined microchannel, Journal of Computational Physics, 256, p. 334-356, 2014.
  98. Youneng Tang, Albert J. Valocchi, Charles J. Werth, Haihu Liu, An Improved Pore-Scale Biofilm Model and Comparison with a Microfluidic Flow Cell Experiment, Water Resources Research, 49, 8370-8382, doi:10.1002/2013WR013843, 2013.
  99. Garcia-Cabrejo, O., A.J. Valocchi, Global Sensitivity Analysis for multivariate output using Polynomial Chaos Expansion, Reliability Engineering and System Safety, 126, 25-36, 2014.
  100. Y. Demissie, A. Valocchi, X.  Cai, N.  Brozovic, G. Senay,M. Gebremichael, Parameter Estimation for Groundwater Models under Uncertain Irrigation Data, Groundwater,  DOI: 10.1111/gwat.12235, 2014.
  101. Boyd, V., Hongkyu Yoon; Changyong Zhang; Mart Oostrom; Nancy Hess; Bruce Fouke; Albert J Valocchi; Charles J Werth; Influence of Mg2+ on CaCO3 precipitation during subsurface reactive transport in a homogeneous silicon-etched pore network,Geochimica et Cosmochimica Acta, 135, 321-335, http://dx.doi.org/10.1016/j.gca.2014.03.018, 2014.
  102. Kang, Q., L. Chen, A.J. Valocchi, H. Viswanathan, Pore-scale study of dissolution-induced changes in permeability and porosity of porous media, Journal of Hydrology,http://dx.doi.org /10.1016/j.jhydrol.2014.06.045, 2014.
  103. Liu, H., A.J. Valocchi, C.J. Werth, M. Oostrom, Pore-scale simulation of liquid CO2 displacement of water using a two-phase lattice Boltzmann model, Adv. Water Resour., DOI: 10.1016/j.advwatres.2014.07.010, 2014.
  104. Kitamura, K. , Fei Jiang , Albert Valocchi , Shun Chiyonobu , Takeshi Tsuji , Kenneth Christensen, The study of heterogeneous two-phase flow around small-scale heterogeneity in porous sandstone by measured elastic wave velocities and LBM simulation, Journal of Geophysical Research, 119 (10), 7564-7577, 2014.
  105. Tang, Y., Albert J. Valocchi, and Charles J. Werth, A hybrid pore-scale and continuum-scale model for solute diffusion, reaction, and biofilm development in porous media, Water Resources Research. 51, doi:10.1002/2014WR016322, 2015.
  106. Tang, Y., Charles J. Werth, R.A. Sanford, R. Singh, K. Michelson, M. Nobu, W. Liu, and Albert J. Valocchi,  Immobilization of Selenite via Two Parallel Pathways during In Situ Bioremediation, Environ Sci Techn, 49, 4543-4550,  doi:10.1021/es506107r, 2015.
  107. Liu, H., Y.Zhang , and A.Valocchi, Lattice Boltzmann simulation of immiscible fluid displacement in porous media: homogeneous versus heterogeneous pore network, Physics of Fluids, 27, 052103; doi: 10.1063/1.4921611,  2015.
  108. Zhang, L., Q. Kang, J. Yao, Y. Gao, Z. Sun, H. Liu, A.J. Valocchi (2015), Pore scale simulation of liquid and gas two-phase flow based on digital core technology, Science China, Technological Sciences, 58 (7), 1-10, doi: 10.1007/s11431-015-5842-z.
  109. Xu, T., & Valocchi, A. J. (2015). Data-driven methods to improve baseflow prediction of a regional groundwater model. Computers & Geosciences. doi: 10.1016/j.cageo.2015.05.016
  110. PVV Le, P Kumar, AJ Valocchi, HV Dang,
    GPU-based high-performance computing for integrated surface–sub-surface flow modeling,  Environmental Modelling & Software 73, 1-13, 2015
  111. Hu, Y., O. Garcia-Cabrejo, X. Cai, A.J. Valocchi, B. DuPont, Global sensitivity analysis for large-scale socio-hydrological models using Hadoop,  Environmental Modelling & Software,  73, 231-243, 2015.
  112. Hu, Y., Valocchi, A.J., Lindgren, S.A., Ramos, E.A. and Byrd, R.A. (2015), Groundwater Modeling with MODFLOW as a Web Application. Groundwater, 53: 834-835. doi:10.1111/gwat.12372
  113. Liu,H., Q. Kang, C. Leonardi, S. Schmieschek, A. Narvaez, B. Jones, J. Williams, A. Valocchi, J. Harting, Multiphase lattice Boltzmann simulations for porous media applications, A review, Comput. Geosci., DOI 10.1007/s10596-015-9542-3, 2015.
  114. Laleian, A., A. Valocchi, C. Werth, Depth-averaged lattice Boltzmann method for liquid flow in microfluidic fevices with Variable Aperture, Computation, 3(4), 600-615; doi:10.3390/computation3040600, 2015.
  115. Xu, T. and A.J. Valocchi, A Bayesian approach to improved calibration and prediction of groundwater models with structural error, Water Resour. Res., 51, 9290-9311, doi:10.1002/2015WR017912, 2015.
  116. Lee, J., H. Yoon, P. K. Kitanidis, C. J. Werth, and A. J. Valocchi (2016), Scalable subsurface inverse modeling of huge data sets with an application to tracer concentration breakthrough data from magnetic resonance imaging, Water Resour. Res., 52, 5213-5231, doi:10.1002/2015WR018483
  117. Cirpka, O. and A.J. Valocchi, (2016) Debates–Stochastic subsurface hydrology from theory to practice: Does stochastic subsurface hydrology help solving practical problems of contaminant hydrogeology?. Water Resour. Res., 10.1002/2016WR019087
  118. Tahmasebi, P., M. Sahimi, A. Kohanpur, A.J. Valocchi, Pore-scale simulation of flow of CO2 and brine in reconstructed and actual 3D rock cores, Jour Petrol Sci Engr, (2016), http://dx.doi.org/10.1016/j.petrol.2016.12.031
  119. Oostrom, M., Mehmani, Y., Romero-Gomez, P., Y. Tang,H. Liu, H. Yoon, Q. Kang, V. Joekar-Niasar, M. T. Balhoff, T. Dewers, G. D. Tartakovsky, E. A. Leist, N. J. Hess, W. A. Perkins, C. L. Rakowski, M. C. Richmond, J. A. Serkowski, C. J. Werth, A. J. Valocchi, T. W. Wietsma, C. Zhang. (2016) Comput Geosci 20: 857. https://doi.org/10.1007/s10596-014-9424-0
  120. Li, L., K.Maher, A. Navarre-Sitchler, J. Druhan, C. Meile, C. Lawrence, J. Moore, J. Perdrial, P. Sullivan, A. Thompson, L. Jin, E. Bolton, S. Brantley, W. Dietrich, K.U. Mayer, C. Steefel, A. Valocchi, and  8 others, (2017) Expanding the role of reactive transport models in critical zone processes, Earth-Science Reviews, 165, 280-301, 2017, http://dx.doi.org/10.1016/j.earscirev.2016.09.001
  121. Tudek, J., D. Crandall, S. Fuchs, C.J. Werth, A.J. Valocchi, Y. Chen, A. Goodman, In situ contact angle measurements of liquid CO2, brine, and Mount Simon sandstone core using micro X-ray CT imaging, sessile drop, and Lattice Boltzmann modeling, (2017)  Journal of Petroleum Science and Engineering (2017), http://dx.doi.org/10.1016/j.petrol.2017.01.047
  122. Xu, Z, H. Liu, A. J. Valocchi, Lattice Boltzmann simulation of immiscible two-phase flow with capillary valve effect in porous media, Water Resources Research, 53, 3770-3790, doi:10.1002/2017WR020373, 2017.
  123. Herrera, P., J. Cortinez, A.J. Valocchi, Lagrangian scheme to model subgrid-scale mixing and spreading in heterogeneous porous media, Water Resources Research, 53, 3302-3318, doi:10.1002/2016WR019994, 2017.
  124. Xu, T., A.J. Valocchi, M. Ye, F. Liang, Y-F Lin, Bayesian calibration of groundwater models with input data uncertainty,  Water Resources Research, 53, 3224-3245, doi:10.1002/2016WR019512, 2017.
  125. Xu, T., A.J. Valocchi, M. Ye, Quantifying model structural error: efficient Bayesian calibration of a regional groundwater flow model using surrogates and a data-driven error model, Water Resources Research, 53, 4084-4105, doi:10.1002/2016WR019831, 2017.
  126. Romano, V., J. De-Haven Hyman, S. Karra, A. J. Valocchi, M. Battaglia, S. Bigi, Numerical modeling of fluid flow in a fault zone: a case of study from Majella Mountain (Italy), Energy Procedia, v. 125, Sept. 2017, 556-560, https://doi.org/10.1016/j.egypro.2017.08.191.
  127. Michelson, K., R.A. Sanford, A.J. Valocchi, C.J.Werth, Nanowires of Geobacter sulfurreducens require redox cofactors to reduce metals in pore spaces too small for cell passage, Environ. Sci. Technol., 51 (20), pp 11660-11668, 2017, DOI: 10.1021/acs.est.7b02531
  128. Chen, Y., Y. Li, A.J. Valocchi, K.T. Christensen, Lattice Boltzmann simulations of liquid CO2 displacing water in a 2D heterogeneous micromodel at reservoir pressure conditions, Journ. Contaminant Hydrol., 2017, https://doi.org/10.1016/j.jconhyd.2017.09.005
  129. Valocchi, A.J., D. Bolster, and C.J. Werth, Mixing-limited reactions in porous media, Transport in Porous Media, special issue in celebration of the 10th anniversary of InterPore, the International Society for Porous Media, https://doi.org/10.1007/s11242-018-1204-1, 2018.
  130. Michelson, Kyle, Alcalde, Reinaldo, Sanford, Robert, Valocchi, Albert, Werth, Charles, Diffusion-based recycling of flavins allows Shewanella oneidensis MR-1 to yield energy from metal reduction across physical separations, Environ. Sci. Technol., 53(7), 3480-3487, https://doi.org/10.1021/acs.est.8b04718, 2019..
  131. Berns, E., R. A Sanford, A. J. Valocchi, T. Strathmann, C.E. Schaefer, C. J. Werth, Contributions of biotic and abiotic pathways to anaerobic trichloroethene transformation in low permeability source zones, Journ. Contam. Hydrol., https://doi.org/10.1016/j.jconhyd.2019.04.003, 2019.
  132. Zhao, Benzhong, Christopher W. MacMinn, Bauyrzhan K. Primkulov, Yu Chen, Albert J. Valocchi, 22 others, and Ruben Juanes, Comprehensive comparison of pore-scale models for multiphase flow in porous media, Proceedings of the National Academy of Sciences, PNAS first published June 21, 2019 https://doi.org/10.1073/pnas.1901619116, 2019.
  133. Kohanpur, A., M. Rahromostaqim, A.J. Valocchi, and M. Sahimi. Two-phase flow of CO2-brine in a heterogeneous sandstone: Characterization of the rock and comparison of the lattice-Boltzmann, pore-network, and direct numerical simulation methods, Advances Water Resour., https://doi.org/10.1016/j.advwatres.2019.103469, 2020.

  134. Chen, Y., A.J. Valocchi, Q. Kang, H. Viswanathan, Inertial Effects during the Process of Supercritical CO2 Displacing Brine in a Sandstone: Lattice Boltzmann Simulations based on the Continuum‐surface‐force and Geometrical Wetting Models, Water Resources Research, in press, https://doi.org/10.1029/2019WR025746, 2020.

  135. Yan, S. and A. Valocchi, Flux-Corrected Transport with MT3DMS for positive solution of transport with full-tensor dispersion, Groundwater, in press, DOI: 10.1111/gwat.12976, 2020.

  136. Kohanpur, A.H., Valocchi, A.J. Pore-Network Stitching Method: A Pore-to-Core Upscaling Approach for Multiphase Flow. Transp Porous Med 135, 659-685 (2020). https://doi.org/ 10.1007/s11242-020-01491-0
  137. Young, R., T. Foster, T. Mieno, A. Valocchi, N. Briozovic, Hydrologic-Economic Trade-offs in Groundwater Allocation Policy Design, Water Resources Research, 2021, https://doi.org/10.1029/2020WR027941
  138. Esfahani, S. G., Valocchi, A.J., Werth, C.J., Using MODFLOW and RT3D to simulate diffusion and reaction without discretizing low permeability zones, Journal of Contaminant Hydrology, 239, 2021, https://doi.org/10.1016/j.jconhyd.2021.103777

  139. Park, Heeho D., Glenn E. Hammond, Albert J. Valocchi, Tara LaForce,. Linear and nonlinear solvers for simulating multiphase flow within large-scale engineered subsurface systems, Advances in Water Resources,156, 2021, https://doi.org/10.1016/j.advwatres.2021.104029.

  140. Zong, Yifei, A. J. Valocchi, Yu-Feng F. Lin, Coupling a borehole thermal model and MT3DMS to simulate dynamic ground source heat pump efficiency, Groundwater, 2021, https://doi.org/ 10.1111/gwat.13159

  141. Kohanpur Amir H., Chen Yu, Valocchi Albert J., Using Direct Numerical Simulation of Pore-Level Events to Improve Pore-Network Models for Prediction of Residual Trapping of CO2 , Frontiers in Water , 3, 2022, https://www.frontiersin.org/article/10.3389/frwa.2021.710160 , 10.3389/frwa.2021.710160
  142. Park, Heeho D., Matthew Paul, Glenn E. Hammond, Albert J. Valocchi, Newton trust-region methods with primary variable switching for simulating high temperature multiphase porous media flow, Advances in Water Resources, 2022, https://doi.org/10.1016/j.advwatres.2022.104285
  143. Zhou L., K. Michelson, G. Fried, R.A. Sanford, M. Sivaguru, A.S. Bhattacharjee, J. Deng, B.W. Fouke, A.J. Valocchi, C.J. Werth, Rates of Sulfate Reduction by Microbial Biofilms That Form on Shale Fracture Walls within a Microfluidic Testbed, ACS ES&T Engineering, 2(9), 1619-1631, 2022.
  144. Berns-Herrboldt, Erin; X. You, J. Lin, R. Sanford, A. Valocchi, T. Strathmann, C. Schaefer, C.J. Werth, Sulfate reducing bacteria enhance trichloroethene reduction by iron-sulfur mineral precipitates, ACS ES&T Water, 2(9), 1500-1510, 2022.
  145. He, Lishen, Albert J. Valocchi, Armando C. Duarte, A Transient Global-Local Generalized FEM for Parabolic and Hyperbolic PDEs with Multi-Space/Time Scales, Journal of Computational Physics, Volume 488, https://doi.org/10.1016/j.jcp.2023.112179  2023.
  146. Valentina Romano, Sabina Bigi, Heeho Park, Albert J. Valocchi, Jeffrey De’Haven Hyman, Satish Karra, Michael Nole, Glenn Hammond, Giampaolo Proietti, and Maurizio Battaglia, A numerical model for gas CO2 migration in a fault zone,  Petroleum Geoscience, https://doi.org/10.1144/petgeo2022-092 2023.
  147. He, Lishen, Albert J. Valocchi, Armando C. Duarte, An Adaptive Global-Local Generalized FEM for Multiscale Advection-Diffusion Problems, Computer Methods in Applied Mechanics and Engineering, Volume 418, Part B, 5 January 2024, 116548, https://doi.org/10.1016/j.cma.2023.116548
  148. Kearney, K.J., Blount, T., Palmer, E., Arvizu, R., Sanford, R., Valocchi, A., Schaefer, C. and Werth, C.J. (2024), Assessment of Cryogenic Coring to Preserve Vertical Distributions of Trichloroethylene and Reaction Products in an Aquitard. Groundwater Monit R. https://doi.org/10.1111/gwmr.12628