Publications

[J37] Elsherif, S. M., Taha, A. F., & Abokifa, A. A. (2024). Disinfectant control in drinking water networks: Integrating advection-dispersion-reaction models and byproduct constraints. Water research, 267, 122441. https://doi.org/10.1016/j.watres.2024.122441

[J36] Salem, A. K., Taha, A. F., & Abokifa, A. A. (2024). Graph neural networks-based dynamic water quality state estimation in water distribution networks. Engineering Applications of Artificial Intelligence, 138, 109426. https://doi.org/10.1016/j.engappai.2024.109426

[J35] Moeini, M., & Abokifa, A. (2024). Chlorine dosage management in drinking water systems: comparing Bayesian optimization to evolutionary algorithms. Journal of Hydroinformatics, 26(11), 2720-2738. https://doi.org/10.2166/hydro.2024.090

[J34] Salem, A. K., & Abokifa, A. A. (2024). Sensor Placement Optimization in Sewer Networks: Machine Learning–Based Source Identification Approach. Journal of Water Resources Planning and Management, 150(11), 04024048. https://doi.org/10.1061/JWRMD5.WRENG-6430

[J33] Mohamed, M. S., Chaplin, B. P., & Abokifa, A. A. (2024). Ab Initio Investigation of Per-and Poly-fluoroalkyl Substance (PFAS) Adsorption on Zerovalent Iron (Fe0). ACS omega, 9(44), 44532-44541. https://doi.org/10.1021/acsomega.4c06612

[J32] Mohamed, M. S., Chaplin, B. P., & Abokifa, A. A. (2024). Adsorption of per-and poly-fluoroalkyl substances (PFAS) on Ni: A DFT investigation. Chemosphere, 141849. https://doi.org/10.1016/j.chemosphere.2024.141849

[J31] Elsherif, S. M., Taha, A. F., Abokifa, A. A., & Sela, L. (2024) “Comprehensive Framework for Controlling Nonlinear Multi-Species Water Quality Dynamics.” Journal of Water Resources Planning and Management, 150 (2), 04023077. https://doi.org/10.1061/JWRMD5.WRENG-6179

[J30] Alnajim, K., & Abokifa, A. A. (2024) “Bayesian Optimization for Contamination Source Identification in Water Distribution Networks.” Water, 16 (1), 168. https://doi.org/10.3390/w16010168

[J29] Moeini, M., Sela, L., Taha, A. F., & Abokifa, A. A.  (2023). “Bayesian Optimization of Booster Disinfection Scheduling in Water Distribution Networks.” Water Research, 242, 120117. https://doi.org/10.1016/j.watres.2023.120117

[J28] Salem, A., Abokifa, A. A. (2023). “Machine Learning-Based Source Identification in Sewer Networks.” Journal of Water Resources Planning and Management, 149 (8), 04023034. https://doi.org/10.1061/JWRMD5.WRENG-6050

[J27] Abokifa, A. A., & Sela, L. (2023). “Integrating spatial clustering with predictive modeling of pipe failures in water distribution systems.” Urban Water Journal, 20(3), 465-476. https://doi.org/10.1080/1573062X.2023.2180393

[J26] Haddad, K., Abokifa, A., An, S., Lee, J., Raman, B., Biswas, P., & Fortner, J. D. (2023). “Crumpled graphene oxide for enhanced room temperature gas sensing: understanding the critical roles of surface morphology and functionalization.” Journal of Materials Chemistry A, 11(1), 447-459. https://doi.org/10.1039/d2ta06883d

[J25] Elsherif, S. M., Wang, S., Taha, A. F., Sela, L., Giacomoni, M. H., Abokifa, A. A. (2022). “Control-Theoretic Modeling of Multi-Species Water Quality Dynamics in Drinking Water Networks: Survey, Methods, and Test Cases” Annual Reviews in Control, 55, 466-485  https://doi.org/10.1016/j.arcontrol.2022.08.003

[J24] Rifaai, T. M., Abokifa, A. A., & Sela, L. (2022). “Integrated approach for pipe failure prediction and condition scoring in water infrastructure systems.” Reliability Engineering & System Safety, 220, 108271. https://doi.org/10.1016/j.ress.2021.108271

[J23] Wang, S., Taha, A. F., Chakrabarty, A., Sela, L., & Abokifa, A. A. (2022). “Model order reduction for water quality dynamics.” Water Resources Research, 58(4), e2021WR029856. https://doi.org/10.1029/2021WR029856

[J22] Abokifa, A. A., Maheshwari, A., Gudi, R. D., & Biswas, P. (2021). Closure to “Influence of Dead-End Sections of Drinking Water Distribution Networks on Optimization of Booster Chlorination Systems”. Journal of Water Resources Planning and Management, 147(11), 07021016. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001451

[J21] Abokifa, A. A., Haddad, K., Raman, B., Fortner, J., & Biswas, P. (2021). “Room temperature gas sensing mechanism of SnO2 towards chloroform: Comparing first principles calculations with sensing experiments.” Applied Surface Science, 554, 149603. https://doi.org/10.1016/j.apsusc.2021.149603

[J20] A. F. Taha, S. Wang, Y. Guo, T. H. Summers, N. Gatsis, M. H. Giacomoni, and A. A. Abokifa. (2021) “Revisiting the Water Quality Sensor Placement Problem: Optimizing Network Observability and State Estimation Metrics”. Journal of Water Resources Planning and Management, 147 (7), 04021040. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001374

[J19] E. Z. Berglund, …, A. A. Abokifa, et al. (2021) “Water and Wastewater Systems and Utilities: Challenges and Opportunities during the COVID-19 Pandemic”. Journal of Water Resources Planning and Management, 147 (5), 02521001. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001373

[J18] S. Wang, A. F. Taha, and A. A. Abokifa. (2021) “How Effective is Model Predictive Control in Real-Time Water Quality Regulation? State-Space Modeling and Scalable Control.” Water Resources Research, 57 (5), e2020WR027771. https://doi.org/10.1029/2020WR027771

[J17] A. Maheshwari, A. A. Abokifa, R. D. Gudi, and P. Biswas (2020). “Optimization of Disinfectant Dosage for Simultaneous Control of Lead and Disinfection-byproducts in Water Distribution Networks”. Journal of Environmental Management, 276, 111186. https://doi.org/10.1016/j.jenvman.2020.111186

[J16] A. Maheshwari, A. A. Abokifa, R. D. Gudi, and P. Biswas (2020). “Framework for Evaluating the Impact of Water Chemistry Changes in Full-Scale Drinking Water Distribution Networks on Lead Concentrations at the Tap”. Journal of Environmental Engineering, 146 (7),  04020051. https://doi.org/10.1061/(ASCE)EE.1943-7870.0001738

[J15] A. A. Abokifa, L. Xing, L. Sela (2020). “Investigating the Impacts of Water Conservation on Water Quality in Distribution Networks Using an Advection-Dispersion Transport Model”. Water, 12 (4), 1033. https://doi.org/10.3390/w12041033

[J14] A. A. Abokifa, L. Katz, L. Sela (2020). “Spatiotemporal Trends of Recovery from Lead Contamination in Flint, MI as Revealed by Crowdsourced Water Sampling”. Water Research, 171, 115442. https://doi.org/10.1016/j.watres.2019.115442

[J13] A. A. Abokifa, P. Biswas, B. Hodges, L. Sela (2020). “WUDESIM: A Toolkit for Simulating Water Quality in the Dead-End Branches of Drinking Water Distribution Networks”. Urban Water Journal, 17 (1), 54-64. https://doi.org/10.1080/1573062X.2020.1734949

[J12] A. A. Abokifa, L. Sela (2019). “Identification of Spatial Patterns in Water Distribution Pipe Failure Data Using Spatial Autocorrelation Analysis”. Journal of Water Resources Planning and Management, 145 (12), 04019057. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001135

[J11] A. A. Abokifa, A. Maheshwari, R. D. Gudi, and P. Biswas (2019). “Influence of the Dead-End Sections of Drinking Water Distribution Networks on the Optimization of Booster Chlorination Systems”. Journal of Water Resources Planning and Management, 145 (12), 04019053. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001125

[J10] A. A. Abokifa, K. Haddad, C. Lo, and P. Biswas (2019). “Real-Time Identification of Cyber-Physical Attacks on Water Distribution Systems via Machine Learning Based Anomaly Detection Techniques”. Journal of Water Resources Planning and Management, 145 (1), 04018089. https://doi.org/10.1061/(ASCE)WR.1943-5452.0001023

[J9] A. Maheshwari, A. A. Abokifa, R. D. Gudi, P. Biswas (2018). “Co-ordinated, Decentralization based Optimization of Disinfectant Dosing in Large-Scale Water Distribution Networks”. Journal of Water Resources Planning and Management, 144 (10), 04018066. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000979

[J8] K. Haddad, A. Abokifa et al.  (2018). “SnO2 Nanostructured Thin Films for Room Temperature Gas Sensing of Volatile Organic Compounds”. ACS Applied Materials & Interfaces, 10 (35), 29972-29981. https://pubs.acs.org/doi/abs/10.1021/acsami.8b08397

[J7] R. Taormina, … , A. A. Abokifa, et al. (2018). “Battle of the Attack Detection Algorithms: Disclosing Cyber Attacks on Water Distribution Networks”. Journal of Water Resources Planning and Management, 144 (8), 04018048. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000969

[J6] A. A. Abokifa, K. Haddad, J. Fortner, C. S. Lo, and P. Biswas (2018). “Sensing Mechanism of Ethanol and Acetone at Room Temperature by SnO2 Nano-columns Synthesized by Aerosol Routes: Theoretical Calculations Compared to Experimental Results”. Journal of Materials Chemistry A, 6, 2053-2066. https://doi.org/10.1039/C7TA09535J

[J5] J Li, H Li, Y Ma, Y Wang, AA Abokifa, C Lu, P Biswas (2017). “Spatiotemporal Distribution of Indoor Particulate Matter Concentration with a Low-cost Sensor Network”. Building and Environment, 127, 138-147. https://doi.org/10.1016/j.buildenv.2017.11.001

[J4] A. A. Abokifa and P. Biswas (2017). “Modeling Soluble and Particulate Lead Release into Drinking Water from Full and Partially Replaced Lead Service Lines”. Environmental Science & Technology, 51 (6), 3318-3326. https://pubs.acs.org/doi/abs/10.1021/acs.est.6b04994

[J3] A. A. Abokifa, Y. J. Yang, C. S. Lo, P. Biswas (2016). “Investigating the Role of Biofilms in Trihalomethane Formation in Water Distribution Systems with a Multicomponent Model”. Water Research, 104, 208-219. https://doi.org/10.1016/j.watres.2016.08.006

[J2] K. Haddad, A. Abokifa, et al. (2016) “Growth of Single Crystal Oriented SnO2 Nanocolumn Arrays by Aerosol Chemical Vapour Deposition”. CrystEngComm, 18 (39), 7544-7553. https://doi.org/10.1039/C6CE01443G

[J1] A. A. Abokifa, Y. J. Yang, C. S. Lo, P. Biswas (2016). “Water Quality Modeling in the Dead-End Sections of Drinking Water Distribution Networks”. Water Research, 89, 107-117. https://doi.org/10.1016/j.watres.2015.11.025

[C11] Salem, A. K., & Abokifa, A. A. (2024). Optimal Sensor Placement in Water Distribution Networks Using Dynamic Prediction Graph Neural Networks. Engineering Proceedings, 69(1), 171. https://doi.org/10.3390/engproc2024069171

[C10] Salem, A. K., & Abokifa, A. A. (2024). A Multivariate LSTM Model for Short-Term Water Demand Forecasting. Engineering Proceedings, 69(1), 167. https://doi.org/10.3390/engproc2024069167

[C9] SM Elsherif, MH Kazma, AF Taha, AA Abokifa. “Water Quality Controllability Metrics, Limitations, and Hydraulic Dependencies”. ASCE-EWRI World Env. & Water Resources Congress 2024, 1390-1399. https://doi.org/10.1061/9780784485477.124.

[C8] A. Salem, A. A. Abokifa. “Optimization of Water Quality Sensor Placement in Sewer Networks.” ASCE-EWRI World Env. & Water Resources Congress 2023, 1119-1126. https://doi/10.1061/9780784484852.102

[C7] M. Moeini, L. Sela, A. F. Taha, A. A. Abokifa. “Optimization Techniques for Chlorine Dosage Scheduling in Water Distribution Networks: A Comparative Analysis.” ASCE-EWRI World Environmental and Water Resources Congress 2023,  987-998. https://doi/10.1061/9780784484852.091

[C6] A. Maheshwari, A. A. Abokifa et al. “Control of Lead Contamination in Water Distribution Networks: A Dynamic Optimization Framework.” IFAC-ACDOS Advances in Control & Optimization of Dynamical Systems 2020, 53 (1), 277-282. https://doi.org/10.1016/j.ifacol.2020.06.047

[C5] A. A. Abokifa, L. Sela. “Spatial Autocorrelation Analysis for the Identification of Pipe Failure Hotspots in Drinking Water Distribution Networks.” ASCE-EWRI World Environmental and Water Resources Congress 2019, 446-454. https://doi.org/10.1061/9780784482353.042

[C4] A. A. Abokifa, L. Sela. “Spatiotemporal Scan Statistics for the Identification of Density-Based Clusters of Pipe Failure Events in Drinking Water Distribution Systems.” ASCE International Conference on Computing in Civil Engineering 2019, 306-313. https://doi.org/10.1061/9780784482445.039

[C3] A. A. Abokifa and P. Biswas. “Optimal Placement and Operation of Booster Chlorination Stations using an Advection-Dispersion Transport Model for Chlorine Decay in the Dead-End pipes.” ASCE-EWRI World Environmental and Water Resources Congress 2018, 380-389. https://doi.org/10.1061/9780784481424.040

[C2] A. Maheshwari, A. A. Abokifa et al. “Two-Point Constraint Control of Water Quality in Distribution Networks.” 15th International Computing & Control for the Water Industry Conference 2017 (CCWI2017: F98)

[C1] A. A. Abokifa, K. Haddad, C. S. Lo, P. Biswas. “Detection of Cyber-Physical Attacks on Water Distribution Systems via Principal Component Analysis and Artificial Neural Networks.” ASCE-EWRI World Environmental and Water Resources Congress 2017, 676-691. https://doi.org/10.1061/9780784480625.063

  • September 2024. “AI-Driven Optimization of Water Quality in Water Distribution Systems”. West Shore Water Producers Association (WSWPA) Fall Meeting.
  • June 2024. “AI for Managing Water Quality in Water Supply Systems”. SIAM Conference on the Mathematics of Planet Earth (MPE). Mini symposium: Applications of AI for Exploring Community Systems Transition to Clean Energy.
  • June 2024. “Multi-Scale Modeling and Optimization of Urban Water Systems”. UIC, Department of Chemical Engineering.
  • December 2021. “Water Quality Modeling and Optimization in Water Distribution Systems”. Current, Third Coast Water Seminar Series.
  • September 2020. “Modeling the Release of Dissolved and Particulate Lead Species from Lead Service Lines” Water Quality Modeling in Premise Plumbing Systems, EWRI Premise Plumbing Modeling Seminar Series.
  • October 2020. “Water Quality Deterioration in Drinking Water Distribution Systems: A Reactive-Transport Modeling Approach” UIUC, Water Resources Engineering and Science Seminar.

Graduate Students’ Presentations

[12] Mohamed S. Mohamed, Brian P. Chaplin, and Ahmed A. Abokifa. Ab-initio Investigation of Per- and Poly-fluoroalkyl substances (PFAS) Adsorption on Zero-Valent Iron (Fe0)”. ACS National Meeting, August 2024, Denver, CO.

[11] Aly Salem, Ahmed A. Abokifa. “A Multivariate LSTM  Model for Short-term Water Demand Forecasting” WDSA/CCWI Joint Conference, July 2024, Ferrara, Italy.

[10] Aly Salem, Ahmed A. Abokifa. “Optimal Sensor Placement in Water Distribution Networks using Dynamic Prediction Graph Neural Networks”. WDSA/CCWI Joint Conference, July 2024, Ferrara, Italy.

[9] Mohammadreza Moeini, Ahmed Abokifa. “State Estimation-Based Placement of Water Quality Sensors in Water Distribution Systems”. ASCE-EWRI Congress, May 2024, Milwaukee, WI.

[8] Aly K. Salem, Ahmed Abokifa. “Graph Neural Networks-Based Water Quality State Estimation in Water Distribution Networks”. ASCE-EWRI Congress, May 2024, Milwaukee, WI.

[7] Mohammadreza Moeini, Ahmed Abokifa. “Physics-Informed Stacking Ensemble Machine Learning for Water Quality State Estimation in Water Distribution Systems”. ASCE-EWRI Congress, May 2024, Milwaukee, WI.

[6] Mohamed S. Mohamed, Brian P. Chaplin, Ahmed A. Abokifa. “Adsorption of per- and polyfluoroalkyl substances (PFAS) on Ni: A systematic DFT study”. ACS National Meeting, August 2023, San Fransisco, CA.

[5] Mohammadreza Moeini, Ahmed Abokifa. “Optimization Techniques for Chlorine Dosage Scheduling in Water Distribution Networks: A Comparative Analysis”. ASCE-EWRI Congress, May 2023, Henderson, NV.

[4] Aly K. Salem, Ahmed Abokifa. “Optimization of Water Quality Sensor Placement in Sewer Networks”. ASCE-EWRI Congress, May 2023, Henderson, NV.

[3] Mohammadreza Moeini, Ahmed Abokifa. “Optimizing the scheduling of booster disinfection stations in water distribution networks using Bayesian optimization”. ASCE-EWRI Congress, June 2022, Atlanta, GA.

[2] Aly K. Salem, Ahmed Abokifa. “Identification of Multiple Contamination Sources in Sewer Networks”. ASCE-EWRI Congress, June 2022, Atlanta, GA.

[1] Mohammadreza Moeini, Ahmed Abokifa. “Optimization of supervised ensemble machine learning models for estimating stormwater quality”. AGU Fall Meeting, December 2021, Virtual.

PI Presentations

[11] A. Abokifa. “AI-Driven Multi-Scale Modeling and Optimization of Water Quality in Drinking Water Distribution Systems” AWWA-WQTC, November 2024, Schaumburg, IL.

[10] A. Abokifa, L. Katz, L. Sela. “Crowdsourced Water Sampling Reveals the Spatiotemporal Trends of Recovery from Lead Contamination in Flint, MI.” ASCE-EWRI Congress, June 2021, Virtual.

[9] A. Abokifa and L. Sela. “Spatial Autocorrelation Analysis for the Identification of Pipe Failure Hotspots in Drinking Water Distribution Networks.” ASCE-EWRI Congress, May 2019, Pittsburgh, PA.

[8] A. Abokifa and P. Biswas. “Optimal Placement and Operation of Booster Chlorination Stations using an Advection-Dispersion Multi-Species Reactive Transport Model.” ASCE-EWRI Congress, May 2018, Minneapolis, MN

[7] A. Abokifa and P. Biswas. “Multiscale Modeling of Dead-Ends of Drinking Water Distribution Systems:  Disinfectant Transport to DBP Formation to Lead Release.” ACS National Meeting, March 2018, New Orleans, LA

[6] A. Abokifa and P. Biswas. “Modeling Soluble and Particulate Lead Release into Drinking Water from Full and Partially Replaced Lead Service Lines.” Mid-American Environmental Eng. Conf., October 2017, St. Louis, MO.

[5] A. Abokifa and P. Biswas. “A Computational Modeling Tool for the Assessment of Lead Levels in a Drinking Water Supply System.” ACS National Meeting, August 2017, Washington, D.C.

[4] A. Abokifa et al. “Detection of Cyber-Physical Attacks on Water Distribution Systems via Principal Component Analysis and Artificial Neural Networks.” ASCE-EWRI Congress, May 2017, Sacramento, CA.

[3] A. Abokifa et al. “WUDESIM: A Software for Water Quality Simulation in the Dead Ends of Water Distribution Systems.” ASCE-EWRI Congress, May 2017, Sacramento, CA

[2] A. Abokifa et al. “Investigating the Role of Biofilms in the Formation of Disinfection Byproducts (DBPs) with a Multi-Component Reactive Transport Model.” ASCE-EWRI Congress, May 2016, West Palm Beach, FL.

[1] A. Abokifa et al. “Water Quality Modeling in the Dead-End Sections of Drinking Water Distribution Networks.” Mid-American Environmental Engineering Conference, October 2014, Rolla, MO.