Book
Riffat, R. (2012) Fundamentals of Wastewater Treatment and Engineering, CRC Press, Taylor and Francis group, 333 pages, Boca Raton, Florida.
Features
|
Book Chapter
- Riffat, R. (2000) Chapter Thirteen, Section Seven: “Water Supply Treatment.” In Standard Handbook of Environmental Science, Health and Technology. Lehr, J. ed., McGraw-Hill Inc., New York.
Research Report
- Riffat, R., Weeks, J. L., Balbus, J., Desai, S. and Moody, J. (1999) "Protecting Workers from Exposure to Chemical and Physical Hazards at Wastewater Treatment Plants." Project 97-HHE-3, Water Environment Research Foundation, Alexandria, VA.
Selected Journal Publications
- Rahman, A., Meerburg, F., Ravadagundhi, S., Wett, B., Jimenez, J., Bott, C., Al-Omari, A., Riffat, R., Murthy, S., and De Clippeleir, H. (2016) “Bioflocculation Management through High-Rate Contact-Stabilization: A Promising Technology to Recover Organic Carbon from Low-Strength Wastewater.” Water Research, vol. 104, 485-496.
- Rahman, A, Riffat, R, Okogi, S, Takacs, I, Al-Omari, A, and Murthy, S. (2016), “Evaluation of Anoxic Heterotrophic Yield Using Various Analytical Methods.” International Journal of Environmental Research, 10(2), 255-264.
- Rahman, A., Okogi, S., Riffat, R., Al-Omari, A., and Murthy, S. (2016) “Characterizing Denitrification Kinetics in Lab Scale Reactors for Longer Term Ethanol Dosage.” Journal of Water and Environment Technology, vol. 14, no.5, 372-385.
- Husnain, T., Liu, Y., Riffat, R. and Mi, B. (2015) “Integration of Forward Osmosis and Membrane Distillation for Sustainable Wastewater Reuse.” Separation and Purification Technology, vol. 156, part 2, 424-431.
- Husnain, T., Mi, B. and Riffat, R. (2015) “Fouling and Long-term Durability of an Integrated Forward Osmosis and Membrane Distillation System.” Water Science & Technology, vol.72, no. 11, 2000-2005.
- Husnain, T., Mi, B., Riffat, R. (2015) “A Combined Forward Osmosis and Membrane Distillation System for Sidestream Treatment.” Journal of Water Resource and Protection, no. 7, 1111-1120.
- Mohd, N. S., Husnain, T., Li, B., Rahman, A., Riffat, R. (2015) “Investigation of the Performance and Kinetics of Anaerobic Digestion at 45oC.” Journal of Water Resource and Protection, no. 7, 1099 - 1110.
- Mohd, N. S., Li, B., Hameed, A., Ahmed, S., Riffat, R. (2015) “Anaerobic Digestion at 45°C for Sludge Treatment: A Trade-off between Performances and Capability in Producing Class A Biosolids.” International Journal of Environmental Science and Development, vol. 7, no. 6, 399-405.
- Shaw, A., Takacs, I., Pagilla, K., Riffat, R., DeClippelier, H., Wilson, C., and Murthy, S. (2015) “Toward Universal Half-Saturation Coefficients: Describing Extant Ks as a Function of Diffusion.” Water Environment Research, vol. 87, no. 5, 387-391.
- Aynur, S., Riffat, R., and Murthy, S. (2014) “Efficiency of Autothermal Thermophilic Aerobic Digestion under Two Different Oxygen Flow Rates.” Water Environment Research, vol. 86, no.1, 87-96.
- Aynur, S., Riffat, R., and Murthy, S. (2011) "Effect of Hydraulic Retention Time on Pretreatment of Blended Municipal Sludge." Water Science and Technology, vol. 64, no.4, 967-973.
- Ma, Y., Wilson, C., Novak, J., Riffat, R., Aynur, S., Murthy, S., Pruden, A. (2011) "Effect of various sludge digestion conditions on sulfonamide, macrolide and tetracycline resistance genes and class I integrons." Environmental Science & Technology, vol. 45, no. 18, 7855-7861.
- Mokhayeri, Y., R. Riffat, S. Murthy , W. Bailey, I. Takacs, and C. Bott (2009) "Balancing Yield, Kinetics and Cost for Three External Carbon Sources used for Suspended Growth Post Denitrification." Water Science and Technology, vol. 60, no.10, 2485-2491.
- A. Cassel, M. Peric, D. Neupane, R. Riffat, and S. Murthy (2009) "Good for a Rainy Day: Changes in Primary Clarifier Design and Chemical Dosing Strategy to Optimize Performance." Water Environment & Technology, vol. 21, no.12, 45-49.
- Neupane, D., Riffat, R., Murthy, S., Peric, M., and Wilson, T. (2008) "Influence Of Source Characteristics, Chemicals And Flocculation On Chemically Enhanced Primary Treatment." Water Environment Research, vol. 80, no. 4, 331-338.
- Shuhaibar, B. and Riffat, R. (2008) "Development of a Process for Harmful Algal Bloom Prediction using GIS and Trend Analysis for the Terrestrial Waters of Kuwait." Journal of Environmental Informatics, vol.12, no. 2, 160-173.
- Dold, P., Takacs, I., Mokhayeri, Y., Nichols, A., Hinojosa, J., Riffat, R., Bott, C., Bailey, W. and Murthy S. (2008) "Denitrification with Carbon Addition - Kinetic Considerations." Water Environment Research, vol. 80, no. 5, 417-427.
- Mokhayeri, Y., Riffat, R., Takacs, I., Dold, P., Bott, C., Hinojosa, J., Bailey, W., and Murthy, S. (2008) "Characterizing Denitrification Kinetics at Cold Temperature using Various Carbon Sources in Lab-Scale Sequencing Batch Reactors." Water Science and Technology, vol. 58, no.1. 233-238.
- Peric, M., Riffat, R., Murthy, S., Neupane, D., and Cassel, A. (2008) "Development of a Laboratory Clarifier Test to Predict Full-Scale Primary Clarifier Performance." International Journal of Environmental Research, vol. 2, no. 2, 103-110.
- Buelna G., and Riffat R. (2007) "Preliminary Environmental Monitoring of Water Quality in the Rio Grande in the Laredo-Nuevo Laredo Region." Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering, vol. 42, no.10, 1379-1390.
- Riffat, R. and Krongthamchat, K. (2007) "Anaerobic Treatment of High Saline Wastewater using Halophilic Methanogens in Laboratory Scale Anaerobic Filters." Water Environment Research, vol.79, no.2, 191-198.
- Mokhayeri, Y., Nichols, A., Murthy, S., Riffat, R., Dold, P., and Takacs, I. (2006) "Examining the Influence of Substrates and Temperature on Maximum Specific Growth Rate of Denitrifiers." Water Science and Technology, vol. 54, no. 8, 155-162.
- Khan, D., and Riffat, R. (2006) "Strategies for Improving Environmental Impact Assessment Process in Pakistan." Journal of Engineering &Applied Science, vol.25, no.1, 67-75.
- Riffat, R. and Khan, D. (2006) "A Review and Evaluation of the Environmental Impact Assessment Process in Pakistan." Journal of Applied Sciences in Environmental Sanitation vol.1, 17-29.
- Krongthamchat, K., Riffat, R., and Dararat, S. (2006) "Effect of trace metals on halophilic and mixed cultures in anaerobic treatment." International Journal of Environmental Science and Technology, vol. 3, no.2, 103-112.
- Riffat, R. and Krongthamchat, K. (2006) "Specific Methanogenic Activity of Halophilic and Mixed Cultures in Saline Wastewater." International Journal of Environmental Science and Technology, vol. 2, no. 4, 291-299.
Conference Presentations and Proceedings
- Hasan, M., Zhang, Q., Riffat, R., Al-Omari, A., Murthy, S., Higgins, M., De Clippeleir, H. (2017) “Evaluation of Dewatering Characteristics of Wastewater Sludge from Different Treatment Processes.” Accepted for Sludge Tech 2017, London, UK.
- Hasan, M., Zhang, Q., Riffat, R., Al-Omari, A., Murthy, S., Higgins, M., De Clippeleir, H. (2017) “Fundamental Study on Dewatering Characteristics of Wastewater Sludge from Different Treatment Process.” Accepted for WEFTEC 2017, Chicago, IL, USA.
- Hasan, M., Zhang, Q., Riffat, R., Al-Omari, A., Murthy, S., Higgins, M., De Clippeleir, H. (2017) “Mechanistically Understanding the Dewatering Fundamentals: impact of biological systems and thermal hydrolysis on cake TS and polymer demand.” Accepted for WEF Residuals and Biosolids Conference, Seattle, WA.
- Rahman, A., Meerburg, F., Ravadagundhi, S., Jimenez, J., Wett, B., Al-Omari, A., Bott, C., Riffat, R., Murthy, S., and De Clippeleir, H. (2016) “Management of Bioflocculation Through High-rate Contact-Stabilization: A Promising Technology to Recover Carbon from Low-Strength Wastewater.” Proceedings of WEF/IWA Nutrient Removal and Recovery Conference, Jul 10-13, Denver, CO.
- Rahman, A., De Clippeleir, H., Van Winckel, T., Le, T., Riffat, R., Wett, B., Jimenez, J., Bott, C., Al-Omari, A., and Murthy, S. (2015) “Does Optimization of Carbon Redirection Always Imply Energy Recovery?” Proceedings of the 88th Annual Conference and Exhibition of Water Environment Federation, WEFTEC, Sep 26-30, Chicago, IL.
- Mohd, N. S., Li, B., Hameed, A., Ahmed, S., Riffat, R. “Anaerobic Digestion at 45⁰C for Sludge Treatment: A Trade-off between Performances and Capability in Producing Class A Biosolids.” Presented at the 5th International Conference on Energy and Environmental Science (ICEES), Penang, Malaysia, Sep 3-4, 2015.
- Rahman, A., Riffat, R., Okogi, S., Takacs, I., Al-Omari, A., and Murthy, S. (2014) “Evaluation of Anoxic Heterotrophic Yield Using Various Analytical Methods.” Proceedings of the IWA Specialist conference on Global Challenges: Sustainable Wastewater Treatment and Resource Recovery, Oct 26-30, Kathmundu, Nepal.
- Rahman, A., Wadhawan, T., Khan, E., Riffat, R., Al-Omari, A., and Murthy, S. (2014) “Characterizing and Quantifying Flocculated and Adsorbed Chemical Oxygen Demand Fractions in High-Rate Processes.” Proceedings of the IWA Specialist conference on Global Challenges: Sustainable Wastewater Treatment and Resource Recovery, Oct 26-30, Kathmundu, Nepal.
- Husnain, T., Mi, B., Riffat, R. (2014) “Fouling and Long-Term Durability of a Combined Forward Osmosis and Membrane Distillation System.” Proceedings of the IWA World Water Congress and Exhibition, Sep 21-26, Lisbon, Portugal.
- Husnain, T., Mi, B., Riffat, R. (2014) “A Combined Forward Osmosis and Membrane Distillation System for Sidestream Treatment.” Presented at the 2014 Tri-Association Conference, Aug 26-28, Ocean City, Maryland.
- Haydée De Clippeleir, Rebecca Jimenez, Eugenio Giraldo, Bernhard Wett, Norman Dockett, Rumana Riffat, Ahmed Al-Omari, S. Murthy (2013) “Screens as a Method for Selective Anammox Retention in Single Stage Deammonification Processes.” Proceedings of Water Environment Federation Nutrient Removal Conference, Vancouver, Canada.
- Riffat, R. and Ahmed S. (2013) Invited speaker at the Pakistan-United States Science and Technology Symposium, held in Islamabad, Jan 31-Feb 1, 2013. Presentation title: "Small Scale Sewage Treatment and Wastewater Reuse System for Pakistan."
- Aynur, S., Riffat, R., Weinshell, S., Murthy, S., Higgins, M. and Beightol, S. (2011) “Comparison of Different Culturing Methods for Enumeration of E. Coli in Thermophilically Digested Biosolids.” Proceedings of the Annual Conference and Exhibition of Water Environment Federation, WEFTEC, Los Angeles, CA.
- Dumit, M., Gabarro, J., Murthy, S., Riffat, R., Wett, B. and Chandran, K. (2011) “The Impact of Post Anoxic Dissolved Oxygen Concentrations on Nitrous Oxide Emissions on Nitrification Processes.” Proceedings of the Annual Conference and Exhibition of Water Environment Federation, WEFTEC, Los Angeles, CA, 2011(9), 6494-6499.
- Torres, V., Takacs, I., Riffat, R., Shaw, A. and Murthy, S. (2011) “Determination of the Range of Anoxic Half Saturation Coefficients for Methanol.” Proceedings of the Annual Conference and Exhibition of Water Environment Federation, WEFTEC, Los Angeles, CA.
- Al-Omari, A., Murthy, S., Takacs, I., Mokhayeri, Y. and Riffat, R. (2011) "Modeling the Use of External Carbon Substrate for Denitrification by Generalists and Specialists." Proceedings of the Nutrient Recovery and Management Conference of Water Environment Federation, Miami, FL.
- Aynur, S., Riffat, R., and Murthy, S. (2010) "Effect of Hydraulic Retention Time on Pretreatment of Blended Municipal Sludge." Proceedings of the IWA conference on Anaerobic Digestion, Mexico.
- Takacs, I., Murthy, S., Hareendran, R., Salam, N., Riffat, R., and Shaw, A. (2010) "Rate Dependant Half Saturation Coefficients for Nitrate." Proceedings of the Annual Conference and Exhibition of Water Environment Federation, WEFTEC, New Orleans, LA.
- Peric, M., Shrestha, A., Riffat, R., Stinson, B. and Murthy, S. (2010) "Observation of Self Regulation of Biofilm Thickness in Denitrifying MBBR." Proceedings of the Annual Conference and Exhibition of Water Environment Federation, WEFTEC, New Orleans, LA.
- Shrestha, A., Riffat, R., Bott, C., Takacs, I., Stinson, B., Peric, M., Neupane, D., and Murthy, S. (2009) “Process Consideration to Achieve Nitrogen Removal in a Moving Bed Biofilm Reactor.” Proceedings of 82nd Annual Conference of Water Environment Federation, WEFTEC ‘09, Orlando, FL.
- Aynur, S., Ahmed, F., Riffat, R., and Murthy, S. (2009) “Evaluation of Two Dual Digestion Processes: AutothermalThermophilic Aerobic Pretreatment followed by TPAD versus MAD.” Proceedings of 82nd Annual Conference of Water Environment Federation, WEFTEC ‘09,Orlando, FL.
- Cassel, A., Peric, M., Neupane, D., Riffat, R., Murthy, S., and Bailey, W. (2009) “Making Chemically Enhanced Primary Clarification Work for You.” Proceedings of 82nd Annual Conference of Water Environment Federation, WEFTEC ‘09,Orlando, FL.
- Mokhayeri, Y., Riffat, R., Murthy, S., Bailey, W., Takacs, I., and Bott, C. (2009) “Balancing Yield, Kinetics and Cost for Three External Carbon Sources used for Suspended Growth Post-Denitrification.” Proceedings of 2nd IWA Specialized Conference – Nutrient Management in Wastewater Treatment Processes, Krakow, Poland.
- Hareendran, R., Salam, N., Riffat, R., Bott, C., Takacs, I., and Murthy, S. (2009) “Investigation of Nitrate Half Saturation Constant for Denitrification at Blue Plains AWTP.” Proceedings of Water Environment Federation Nutrient Removal Conference, Washington, DC.
- Shrestha, A., Riffat, R., Bott, C., Takacs, I., Stinson, B., Peric, M., Neupane, D., and Murthy, S. (2009) “Denitrification Stoichiometry and Kinetics of Moving Bed Biofilm Reactor.” Proceedings of Water Environment Federation Nutrient Removal Conference, Washington, DC.
- Aynur, S. K., Dohale, S., Dumit, M., Riffat, R., Abu-Orf, M., and Murthy, S. (2009) “Efficiency of Autothermal Thermophilic Aerobic Digestion under Two Different Oxygen Flowrates.” Proceedings of Water Environment Federation Residuals and Biosolids Conference, Portland, Oregon.
- Mokhayeri, Y., Riffat, R., Takacs, I., Dold, P., Bott, C., Hinojosa, J., Bailey, W. and Murthy, S. (2008) “Characterizing Denitrification Kinetics at Cold Temperature using Various Carbon Sources in Lab-Scale Sequencing Batch Reactors.” Proceedings of IWA World Water Congress and Exhibition, Vienna, Austria.
- Aynur, S., Chatterjee, S., Wilson, C., Riffat, R., Novak, J., Higgins, M., Abu-Orf, M., Eschborn, R., Le, S. and Murthy, S. (2008) “Bench scale Evaluation of Two Enhanced Digestion Processes: Enhanced Enzymic Hydrolysis and Dual Digestion.” Proceedings of 81st Annual Conference of Water Environment Federation, WEFTEC ‘08, Chicago, IL.
- Hinojosa, J., Riffat, R., Fink, S., Murthy, S., Selock, K., Bott, C., Wimmer, R., Dold, P., and Takacs, I. (2008) “Estimating The Kinetics And Stoichiometry Of Heterotrophic Denitrifying Bacteria With Glycerol As An External Carbon Source.” Proceedings of 81st Annual Conference of Water Environment Federation, WEFTEC ‘08, Chicago, IL.
- Wimmer, R., Hinojosa, J., Selock, S., Murthy, S., Bott, C., Riffat, R., and Burton, W. (2007) “Development of Denitrification Kinetics for Alternative Supplemental Carbon Sources at Full Scale and Bench Scale.” Proceedings of 80th Annual Conference of Water Environment Federation, WEFTEC ‘07, San Diego, CA.
- Nichols, A., Hinojosa, J., Riffat, R., Dold, P., Takacs, I., Bott, C., Bailey, W., and Murthy, S. (2007) “Maximum Methanol Utilizer Growth Rate: Impact of Temperature on Denitrification.” Proceedings of 80th Annual Conference of Water Environment Federation, WEFTEC ‘07, San Diego, CA.
- Mokhayeri, Y., Murthy, S., Riffat, R. Bott, C., Dold, P., and Takacs, I. (2007) “Denitrification Kinetics using External Carbon Sources: Methanol, Ethanol and Acetate.” Proceedings of 80th Annual Conference of Water Environment Federation, WEFTEC ‘07, San Diego, CA.
- Shuhaibar, B. and Riffat, R. (2007) “A Preliminary Study Of Harmful Algal Bloom Outbreaks In KuwaitBay Using GIS.” Proceedings of the 6th ISEIS International Conference on Environmental Informatics, Bangkok, Thailand.
- Buelna, G., and Riffat, R. (2007) “Preliminary Assessment of Water Quality in the Rio Grande in the Laredo-Nuevo Laredo Region.” Proceedings of the 234th American Chemical Society National Meeting, Boston, MA.
- Dold, P., Takacs, I., Mokhayeri, Y., Nichols, A., Hinojosa, J., Riffat, R., and Murthy S. (2007) “Denitrification with Carbon Addition – Kinetic Considerations.” Proceedings of Nutrient Removal Conference 2007: The State of the Art, Baltimore, Maryland.
- Peric, M., Riffat, R., Murthy, S., Stinson, B., Cassel, A., Neupane, D., and Wilson, T. (2007) “Novel Test for Total Phosphorus Removal Optimization in Primary Clarifiers.” Proceedings of Nutrient Removal Conference 2007: The State of the Art, Baltimore, Maryland.
- Mokhayeri, Y., Nichols, A., Murthy, S., Riffat, R., Dold, P., and Takacs, I. (2006) “Examining the Influence of Substrates and Temperature on Maximum Specific Growth Rate of Denitrifiers.” Proceedings of IWA World Water Congress and Exhibition, Beijing, China.
- Peric, M., Neupane, D., Murthy, S., Riffat, R., Wilson, T., and Cassel, A. (2006) “Laboratory Surface Overflow Rate (SOR) Test to Predict and Optimize Full Scale Chemically Enhanced Primary Treatment (CEPT) Process.” Proceedings of IWA World Water Congress and Exhibition, Beijing, China.
- Neupane, D., Riffat, R., Murthy, S., and Peric, M. (2006) “Influence Of Source Characteristics, Chemicals And Flocculation On Non-Settleable Solids And Chemically Enhanced Primary Treatment.” Proc. 79th Annual Conference of Water Environment Federation, WEFTEC ‘06, Dallas, Texas.
- Peric, M., Riffat, R., et al. (2006) “Laboratory Clarifier Test To Predict And Optimize Full Scale Chemically Enhanced Primary Treatment (CEPT) Process.” Proc. 79th Annual Conference of Water Environment Federation, WEFTEC ‘06, Dallas, Texas.
- Tallent, R. and Riffat, R. (2003) “Effects of Gasoline and BTEX Compounds on Methanogenic Bacteria.” Proceedings of the 76th Annual Conference of Water Environment Federation, WEFTEC 2003, Los Angeles, CA.
- Riffat, R. and Krongthamchat, K. (2002) “Anaerobic Treatment of High Saline Wastewater using Halophilic Methanogens in Anaerobic Filters.” Proceedings of the 75th Annual Conference of Water Environment Federation, WEFTEC 2002, Chicago, IL.
- Krongthamchat, K. and Riffat, R. (2001) “Organic Biodegradation in Saline Wastewater using Halophile-supplemented Methanogenic Cultures.” Proceedings of the 9th World Congress Anaerobic Digestion 2001, September 2-5, Antwerpen, Belgium.
- Dararat, S. and Riffat, R. (2001) “Inhibition of Acetoclastic Methanogens in Various Origins of Anaerobic Biomass by BTEX Compounds.” Proceedings of the 9th World Congress Anaerobic Digestion 2001, September 2-5, Antwerpen, Belgium.
- Dararat, S. and Riffat, R. (1999) "Biodegradability and Toxicity Studies of BTEX containing Wastewater using Anaerobic Biomass." Proceedings of the 72nd Annual Water Environment Federation Conference and Exposition,October, New Orleans, Louisiana.
- Riffat, R., Weeks, J. L., and Balbus, J. (1998) "Workplace Exposure Control at Wastewater Treatment Plants." WERF Workshop Proceedings, 71st Annual Water Environment Federation Conference and Exposition, October 3-7, Orlando, Florida.
- Riffat, R. and Urrea, C. E. (1998) “Pollution Prevention in the metal Finishing Industry - A Comparison between the United States and Colombia.” Proceedings of the 14th International Conference on Solid Waste Technology and Management, Philadelphia, Pennsylvania.
- Riffat, R. and Urrea, C. E. (1998) “Comparative Study Between the Development of Pollution Prevention Technologies of the United States Metal Finishing Industry and the Current Situation of Twelve Colombian Metal Finishing Companies.” Proceedings of the 71st Annual Water Environment Federation Conference and Exposition, October 3-7, Orlando, Florida.
- Riffat, R. and J. P. Blackford (1997) “The Impact of Plastic Recycling on Pollution Prevention.” Proceedings of the 13th International Conference on Solid Waste Technology and Management, Philadelphia, Pennsylvania.
- Riffat, R. and R. R. Dague (1994) “Fundamental Studies on the Anaerobic Biosorption Process.” Proceedings of the 7th International Symposium on Anaerobic Digestion of International Association of Water Quality, South Africa.
- Riffat, R. and R. R. Dague (1993) “Laboratory Studies on the Anaerobic Biosorption Process.” Proceedings of the 66th Annual Conference of Water Environment Federation, California.