Publications

Peer Reviewed papers: (full list available at Google Scholar citations)

  1. Huang, Y., Guo, J., Zhang, C., and Hu, Z. (2016) Hydrogen production from the dissolution of nano zero valent iron and its effect on anaerobic digestion. Water Research, 88, 475-480.
  2. Li, W., Shan, X.-Y., Wang, Z.-Y., Lin, X.-Y., Li, C.-X., Cai, C.-Y., Abbas, G., Zhang, M., Shen, L.-D., Hu, Z.-Q., Zhao, H.-P., and Zheng, P. (2016) Effect of self-alkalization on nitrite accumulation in a high-rate denitrification system: Performance, microflora and enzymatic activities. Water Research, 88, 758-765.
  3. Shen, Q., Wall, J., and Hu, Z. Q. (2016) Solids retention time-dependent phototrophic growth and population changes between algal and cyanobacterial species under chemostat conditions. Water Environment Research, 88, 5-12.
  4. Xu, M., Xu, S., Bernards, M., and Hu, Z. Q. (2016) Evaluation of high density algal cultivation for secondary wastewater polishing. Water Environ. Res., 88, 47-53.
  5. Zhang, C., Hu, Z., and Deng, B. (2016) Silver nanoparticles in aquatic environments: Physiochemical behavior and antimicrobial mechanisms. Water Research, 88, 403-427.
  6. Dai, J., Zhang, C., Lin, C.-H., and Hu, Z. (2015) Emission of carbon dioxide and methane from duckweed ponds for stormwater treatment. Water Environment Research, 87, 805-812.
  7. Hu, W., Yin, J., Deng, B., and Hu, Z. Q. (2015) Application of nano TiO2 modified hollow fiber membranes in algal membrane bioreactors for high-density algae cultivation and wastewater polishing. Bioresource Technology, 193, 135-141.
  8. Xu, M., Li, P., Tang, T., and Hu, Z. Q. (2015) Roles of SRT and HRT of an algal membrane bioreactor system with a tanks-in-series configuration for secondary wastewater effluent polishing. Ecological Engineering, 85, 257-264.
  9. Xu, S., and Hu, Z. (2015) Kinetics of nutrient removal by Nano Zero-Valent iron under different biochemical environments. Water Environment Research, 87, 483-490.
  10. Yang, Y., Chen, Q., Guo, J., and Hu, Z. (2015) Kinetics and methane gas yields of selected C1 to C5 organic acids in anaerobic digestion. Water Research, 87, 112-118.
  11. Zhang, F., Li, P., Chen, M., Wu, J., Zhu, N., Wu, P., Chiang, P., and Hu, Z. (2015) Effect of operational modes on nitrogen removal and nitrous oxide emission in the process of simultaneous nitrification and denitrification. Chemical Engineering Journal, 280, 549-557.
  12. Gajaraj, S., and Hu, Z. Q. (2014) Integration of microbial fuel cell techniques into activated sludge wastewater treatment processes to improve nitrogen removal and reduce sludge production. Chemosphere, 117, 151-157.
  13. Guo, J., Sims, A., Gajaraja, S., Wu, D., and Hu, Z. Q. (2014) Biodegradation of selected aromatic nitrogen compounds in activated sludge systems and their contribution to effluent nitrogen concentration. Water Environment Research, 86, 2166-2175.
  14. Song, X., Li, H., Hu, Z., Mustapha, A., and Lin, M. (2014) Characterization and quantification of engineered nanoparticles in food by epithermal instrumental neutron activation analysis and electron microscopy. Journal of Food Measurement and Characterization, 8, 207-212.
  15. Song, X., Li, R., Li, H., Hu, Z., Mustapha, A., and Lin, M. (2014) Characterization and Quantification of Zinc Oxide and Titanium Dioxide Nanoparticles in Foods. Food and Bioprocess Technology, 7, 456-462.
  16. Tang, T., Fadaei, H., and Hu, Z. Q. (2014) Rapid evaluation of algal and cyanobacterial activities through specific oxygen production rate measurement. Ecological Engineering, 73, 439-445.
  17. Xu, M., Bernards, M., and Hu, Z. (2014) Algae-facilitated chemical phosphorus removal during high-density Chlorella Emersonii cultivation in a membrane bioreactor. Bioresource Technology, 153, 383-387.
  18. Xu, S., Bernards, M., and Hu, Z. Q. (2014) Evaluation of anaerobic/anoxic/oxic (A2/O) and reverse A2/O processes in biological nutrient removal. Water Environment Research, 86, 2186-2193.
  19. Xu, S., Sun, M., Zhang, C., Surampalli, R. Y., and Hu, Z. Q. (2014) Filamentous sludge bulking control by nano zero-valent iron in activated sludge treatment systems. Environmental Science: Processes & Impacts, 16, 2721 – 2728.
  20. Xu, S., Wu, D., and Hu, Z. (2014) Impact of hydraulic retention time on organic and nutrient removal in a membrane coupled sequencing batch reactor. Water Research, 55, 12-20.
  21. Zhang, C., Liang, Z., and Hu, Z. (2014) Bacterial response to a continuous long-term exposure of silver nanoparticles at sub-ppm silver concentrations in a membrane bioreactor activated sludge system. Water Research, 50, 350-358.
  22. Zhang, C., Wang, G., and Hu, Z. (2014) Changes in wastewater treatment performance and activated sludge properties of a membrane bioreactor at low temperature operation. Environmental Sciences: Processes and Impacts, 16, 2199-2207.
  23. Gajaraj, S., Fan, C., Lin, M., and Hu, Z. (2013) Quantitative detection of nitrate in water and wastewater by surface-enhanced Raman spectroscopy. Environmental Monitoring and Assessment, 185, 5673-5681.
  24. Sims, A., Gajaraj, S., and Hu, Z. Q. (2013) Nutrient removal and greenhouse gas emissions in duckweed treatment ponds. Water Research, 47, 1390-1398.
  25. Sims, A., and Hu, Z. (2013) Simulated storm-water runoff treatment by duckweed and algae ponds. Journal of Environmental Engineering (United States), 139, 509-515.
  26. Sims, A., Zhang, Y., Gajaraj, S., Brown, P. B., and Hu, Z. (2013) Toward the development of microbial indicators for wetland assessment. Water Research, 47, 1711-1725.
  27. Xu, S., Zhang, Y., Sims, A., Bernards, M., and Hu, Z. Q. (2013) Fate and toxicity of melamine in activated sludge treatment systems after a long-term sludge adaptation. Water Research, 47, 2307-2314.
  28. Yang, Y., Gajaraj, S., Wall, J. D., and Hu, Z. Q. (2013) A comparison of nanosilver and silver ions on bioreactor landfill operations and methanogenic assemblages. Water Research, 47, 3422-3430.
  29. Yang, Y., Guo, J., and Hu, Z. Q. (2013) Impact of nano zero valent iron (NZVI) on methanogenic activity and population dynamics in anaerobic digestion. Water Research, 47, 6790-6800.
  30. Yang, Y., Zhang, C., and Hu, Z. (2013) Impact of metallic and metal oxide nanoparticles on wastewater treatment and anaerobic digestion. Environmental Science: Processes & Impacts, 15, 39-48.
  31. Yin, J., Yang, Y., Hu, Z., and Deng, B. (2013) Attachment of silver nanoparticles (AgNPs) onto thin-film composite (TFC) membranes through covalent bonding to reduce membrane biofouling. Journal of Membrane Science, 441, 73-82.
  32. Zhang, Y., and Hu, Z. Q. (2013) Combined treatment of Pseudomonas aeruginosa biofilms with bacteriophages and chlorine. Biotechnology and Bioengineering, 110, 286-295.
  33. Zhang, Y., Riley, L. K., Lin, M., Purdy, G. A., and Hu, Z. (2013) Development of a virus concentration method using lanthanum-based chemical flocculation coupled with modified membrane filtration procedures. Journal of Virological Methods, 190, 41-48.
  34. Zhang, Y. Y., Hunt, H., and Hu, Z. Q. (2013) Application of bacteriophages to selectively remove Pseudomonas aeruginosa in water and wastewater filtration systems. Water Research, 47, 4507-4518.
  35. Liang, Z., and Hu, Z. Q. (2012) Biodegradation of nitrophenol compounds and the membrane fouling trends in two types of membrane bioreactors. Journal of Membrane Science, 415-416, 93-100.
  36. Liang, Z., and Hu, Z. Q. (2012) Start-up performance evaluation of submerged membrane bioreactors using conventional activated sludge process and modified Luzack-Ettinger process. Journal of Environmental Engineering, 138, 932-939.
  37. Sims, A., Gajaraj, S., and Hu, Z. (2012) Seasonal population changes of ammonia-oxidizing organisms and their relationship to water quality in a constructed wetland. Ecological Engineering, 40, 100-107.
  38. Sims, A., Horton, J., Gajaraj, S., McIntosh, S., Miles, R., J., Mueller, R., Reed, R., and Hu, Z. (2012) Temporal and spatial distributions of ammonia-oxidizing archaea and bacteria and their ratio as an indicator of oligotrophic conditions in natural wetlands. Water Research, 46, 4121-4129.
  39. Yang, Y., Chen, Q., Wall, J. D., and Hu, Z. Q. (2012) Potential nanosilver impact on anaerobic digestion at moderate silver concentrations. Water Research, 46, 1176-1184.
  40. Yang, Y., Xu, M., Wall, J. D., and Hu, Z. Q. (2012) Nanosilver impact on methanogenesis and biogas production from municipal solid waste. Waste Management, 32, 816-825.
  41. Zhang, Y., Riley, L. K., Lin, M., and Hu, Z. (2012) Determination of low-density Escherichia coli and Helicobacter pylori suspensions in water. Water Research, 46, 2140-2148.
  42. Fan, C., Hu, Z., Mustapha, A., and Lin, M. (2011) Rapid detection of food- and waterborne bacteria using surface-enhanced Raman spectroscopy coupled with silver nanosubstrates. Applied Microbiology and Biotechnology, 92, 1053-1061.
  43. Liang, Z., Nguyen, H. Q., Das, A., and Hu, Z. (2011) Improving nitrogen removal in two modified decentralized wastewater systems. Water Environment Research, 83, 722-730.
  44. You, J., Zhang, Y., and Hu, Z. Q. (2011) Bacteria and bacteriophage inactivation by silver and zinc oxide nanoparticles. Colloids and Surfaces B: Biointerfaces, 85, 161-167.
  45. Yu, C. P., Liang, Z., Das, A., and Hu, Z. Q. (2011) Nitrogen removal from wastewater using membrane aerated mcrobial fuel cell techniques. Water Research, 45, 1157-1164.
  46. Choi, O., Yu, C.-P., Fernández, G. E., and Hu, Z. Q. (2010) Interactions of nanosilver with E. coli cells in planktonic and biofilm cultures. Water Research, 44, 6095-6103.
  47. Choi, O. K., Das, A., Yu, C.-P., and Hu, Z. Q. (2010) Nitrifying bacterial growth inhibition in the presence of algae and cyanobacteria. Biotechnology and Bioengineering, 107, 1004-1011.
  48. Fan, C., Hu, Z. Q., Riley, L. K., Purdy, G. A., Mustapha, A., and Lin, M. (2010) Detecting food- and waterborne viruses by surface-enhanced Raman spectroscopy. Journal of Food Science, 75, M302-M307.
  49. Liang, Z., Das, A., Beerman, D., and Hu, Z. Q. (2010) Biomass characteristics of two types of submerged membrane bioreactors for nitrogen removal from wastewater. Water Research, 44, 3313-3320.
  50. Liang, Z., Das, A., and Hu, Z. Q. (2010) Bacterial response to a shock load of nanosilver in an activated sludge treatment system. Water Research, 44, 5432-5438.
  51. Zhang, Y., Riley, L. K., Lin, M., and Hu, Z. (2010) Lanthanum-based concentration and microrespirometric detection of microbes in water. Water Research, 44, 3385-3392.
  52. Choi, O. K., Clevenger, T. E., Deng, B. L., Ross, L., Surampalli, Y. R., and Hu, Z. Q. (2009) Role of sulfide and ligand strength in controlling nanosilver toxicity. Water Research, 43, 1879-1886.
  53. Choi, O. K., and Hu, Z. Q. (2009) Nitrification inhibition by silver nanoparticles. Water Science and Technology, 59, 1699–1702.
  54. Choi, O. K., and Hu, Z. Q. (2009) Role of reactive oxygen species in determining nitrification inhibition by metallic/oxide nanoparticles. Journal of Environmental Engineering, 135, 1365–1370.
  55. Kim, N.-J., Lin, M., Hu, Z., and Li, H. (2009) Evaporation-controlled chemical enhancement of SERS using a soft polymer substrate. Chemical Communications,6246-6248.
  56. Liu, Y., He, L., Mustapha, A., Li, H., Hu, Z. Q., and Lin, M. (2009) Antibacterial activities of zinc oxide nanoparticles against Escherichia coli O157:H7. J. Appl. Microbiol., 107, 1193-1201.
  57. You, J., Das, A., Dolan, E. M., and Hu, Z. (2009) Ammonia-oxidizing archaea involved in nitrogen removal. Water Research, 43, 1801-1809.
  58. Chandran, K., Hu, Z. Q., and Smets, B. F. (2008) A critical comparison of extant batch respirometric and substrate depletion assays for estimation of nitrification biokinetics. Biotechnology and Bioengineering, 101, 62-72.
  59. Choi, O. K., Deng, K., Kim, N. J., Ross, L., Surampalli, Y. R., and Hu, Z. Q. (2008) The inhibitory effects of silver nanoparticles, silver ions, and silver chloride colloids on microbial growth. Water Research, 42, 3066-3074.
  60. Choi, O. K., and Hu, Z. Q. (2008) Size dependent and reactive oxygen species related nanosilver toxicity to nitrifying bacteria. Environmental Science & Technology, 42, 4583-4588.
  61. He, L., Kim, N.-J., Li, H., Hu, Z. Q., and Lin, M. (2008) Use of a fractal-like gold nanostructure in surface enhanced Raman spectroscopy for detection of selected food contaminants. Journal of Agricultural and Food Chemistry, 56, 9843-9847.
  62. Hu, Z. Q. (2008) Electricity generation by a baffle-chamber membraneless microbial fuel cell. Journal of Power Sources, 179, 27-33.
  63. Hu, Z. Q. (2008) Electrochemical determination of anaerobic microbial decay coefficients. Chemosphere, 72, 312-318.
  64. Hu, Z. Q., Jin, J., Abruna, H. D., Houston, P. L., Hay, A. G., Ghiorse, W. C., Shuler, M. L., Hidalgo, G., and Lion, L. W. (2007) Spatial distributions of copper in microbial biofilms by scanning electrochemical microscopy. Environmental Science & Technology, 41, 936-941.
  65. Chandran, K., Hu, Z. Q., and Smets, B. F. (2005) Applicability of an extant batch respirometric assay in describing dynamics of ammonia and nitrite oxidation in a nitrifying bioreactor. Water Science and Technology, 52, 503-508.
  66. Hu, Z. Q., Ferraina, R. A., Ericson, J. F., MacKay, A. A., and Smets, B. F. (2005) Biomass characteristics in three sequencing batch reactors treating a wastewater containing synthetic organic chemicals. Water Research, 39, 710-720.
  67. Hu, Z. Q., Ferraina, R. A., Ericson, J. F., and Smets, B. F. (2005) Effect of long-term exposure, biogenic substrate presence, and electron acceptor conditions on the biodegradation of multiple substituted benzoates and phenolates. Water Research, 39, 3501-3510.
  68. Hu, Z. Q., Hidalgo, G., Houston, P. L., Hay, A. G., Shuler, M. L., Abruna, H. D., Ghiorse, W. C., and Lion, L. W. (2005) Determination of spatial distributions of zinc and active biomass in microbial biofilms by two-photon laser scanning microscopy. Applied and Environmental Microbiology, 71, 4014-4021.
  69. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. (2004) Comparison of nitrification inhibition by metals in batch and continuous flow reactors. Water Research, 38, 3949-3959.
  70. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. (2003) Impact of metal sorption and internalization on nitrification inhibition. Environmental Science & Technology, 37, 728-734.
  71. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. (2003) Nitrification inhibition by ethylenediamine-based chelating agents. Environmental Engineering Science, 20, 219-228.
  72. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. (2002) Effect of nickel and cadmium speciation on nitrification inhibition. Environmental Science & Technology, 36, 3074-3078.
  73. Hu, Z. Q., Chandran, K., Smets, B. F., and Grasso, D. (2002) Evaluation of a rapid physical-chemical method for the determination of extant soluble COD. Water Research, 36, 617-624.
  74. Schulthess, C. P., and Hu, Z. Q. (2001) Impact of chloride anions on proton and selenium adsorption by an aluminum oxide. Soil Science Society of America Journal, 65, 710-718.
  75. Hu, W., Brown, P., and Hu, Z. Q. (2016) Dry weight and cell density of individual algal and cyanobacterial cells (to be submitted).
  76. Xu, S., Sun, M., and Hu, Z. Q. (2016) Biodegradation of melamine in a membrane bioreactor at high biomass concentrations (to be submitted).

Books Edited and Book Chapters:

Hu, Z. Q. Impact of Silver Nanoparticles on Wastewater Treatment. 2011.WERF Report U3R07, International Water Association (IWA) Publishing, Publication Date: 01 Apr 2011 • ISBN: 9781843393993, Pages: 50.

Zhang, T. C., Surampalli, R. Y., Lai, C.K., Hu, Z.Q., Tyagi, R.D., and Lo, M.C. 2009. Nonotechnologies for Water Environment Applications. American Society of Civil Engineers. ISBN-13: 9780784410301; ISBN-10: 0784410305.

Nguyen, H.Q., Liang, Z. and Hu, Z.Q. 2009. Nanoparticles for Treatment of Chlorinated Organic Contaminants (Chapter 4). American Society of Civil Engineering.

Shan, G. B., Surampalli, R. Y., Tyagi, R.D., Zhang, T. C., Hu, Z. Q., and Yan, S. 2009. Environmental Risks of Nanomaterials (Chapter 17). American Society of Civil Engineering.

Hu, Z. Q. and Grasso, D. 2005. Water Analysis: Chemical Oxygen Demand, in Encyclopedia of Analytical Chemistry (2nd edition) (P.J. Worsfold, A.Townshend and C. F. Poole, eds.), Elsevier, Oxford, Vol. 9, pp. 325-329.

Other Publications at Professional Meetings:

  1. Xu, S. and Hu, Z.Q.  2014.  Implications and application of nano zero-valent iron for anaerobic digestion and wastewater treatment. Presented at the American Chemical Society (ACS) 247th National Meeting, March 16-20, 2014, Dallas TX, USA.
  2. Xu, S. and Hu, Z.Q.  2013.  Evaluation of Anaerobic/anoxic/oxic (AAO) and Reverse AAO processes in biological nutrient removal. AEESP Biennial Conference, Golden, CO.
  3. Xu, M. and Hu, Z.Q.  2013. Enhanced Chemical Phosphorus Removal in an Algae Membrane Bioreactor. AEESP Biennial Conference, Golden, CO.
  4. Gajaraj, S. and Hu, Z.Q.  2013. Enhanced Hexavalent Chromium Reduction in Bio-Assisted Electrochemical Systems. AEESP Biennial Conference, Golden, CO.
  5. Tang, T. and and Hu, Z.Q.  2013. Interaction between Green Algae and Cyanobacteria in Wastewater Polishing Process with Focus on Population Change. AEESP Biennial Conference, Golden, CO.
  6. Zhang, C. Liang, Z. and Hu, Z. Q. 2013. Bacterial Response to Long-Term Exposure of Silver Nanoparticles at Low Concentrations in a Membrane Bioreactor Activated Sludge System, AEESP Biennial Conference, Golden, CO.
  7. Xu, M. and Hu, Z. Q. 2012. Start-up Performance Evaluation of an Algae-based Membrane Bioreactor for Improved Phosphorus Removal. Mid-West Environmental Engineering Conference, Southern Illinois University Edwardsville, IL.
  8. Zhang, Y. and Hu, Z. Q. 2011. Biofilm removal by bacteriophages isolated from wastewater, IWA Biofilm Conference 2011: Processes in Biofilms, Tongji University, Shanghai, China.
  9. Liang, Z. and Hu, Z. Q. 2011. Biodegradation of Nitrophenol Compounds in Submerged Membrane Bioreactors. 17th Annual Mid-American Environmental Engineering Conference, University of Missouri, Columbia.
  10. Yang, Y., Chen, Q., and Hu, Z. Q. 2011. Potential Nanosilver Impact on Anaerobic Digestion at Moderate Silver Concentrations. Mid-West Environmental Engineering Conference, University of Missouri, Columbia.
  11. Fadaei, H. and Hu, Z. Q. 2010. Rapid determination of algal growth kinetics using respirometry. Presented at the Mid-West Environmental Engineering Conference, Missouri University of Science and Technology.
  12. Yang, Y., Xu, M, and Hu, Z. Q. 2010. The Impact of Silver Nanoparticles on Anaerobic Fermentation Process in Bioreactor Landfills. Presented at the Mid-West Environmental Engineering Conference, Missouri University of Science and Technology.
  13. Yang, Y., Xu, M, and Hu, Z. Q. 2010. The Impact of Silver Nanoparticles on Anaerobic Processes in Bioreactor Landfill. EPA workshop in Portland, OR.
  14. Jia, Y. and Hu, Z. Q. 2009. Impact of nanoparticles on bacterial and phage inactivation. Mid-West Environmental Engineering Conference, Washington University, St. Louis.
  15. Yang, Y., Chen, Q, and Hu, Z. Q. 2009. Bioavailability of Metallic Nanoparticles and Heavy Metals in Landfills. EPA workshop in Las Vegas, Nevada.
  16. Choi, O.K. and Hu, Z. Q. 2009. Impact on Nitrifying Bacterial Growth by Titanium Dioxide Nanoparticles Under UV Exposure. World Environmental & Water Resources Congress in Kansas City, Missouri.
  17. Liang, Z. H. Nguyen, H. Q., Das, A. and Hu, Z. Q. 2009. Nutrient removal from on-site wastewater treatment systems using membrane aerated bioreactor and microbial fuel cell techniques. AEESP Biennial Conference, Iowa City, IA.
  18. Liang, Z. H. and Hu, Z. Q. 2009. Biological Nutrient Removal for On-Site Wastewater Treatment Systems Using a Membrane Aerated Bioreactor. The 82nd Annual Water Enviroment Federation Technical Exhibition and Conference, Orlando, Florida, October 10-14, 2009.
  19. Choi, O.K. Das, A. Yu, C-P. and Hu, Z. Q. 2009.Autotrophic cogrowth of nitrifying bacteria, cyanobacteria, and chlorella in a nitrifying bioreactor. AEESP Biennial Conference, Iowa City, IA.
  20. Zhang, Y. and Hu, Z. Q. 2009. Lanthanum-based concentration and microrespirometric detection of microbes in water. AEESP Biennial Conference, Iowa City, IA.
  21. Zhang, Y and Hu, Z.Q. 2009. Lanthanum-based concentration and microrespirometric detection of microbes in water. Presented at the American Chemical Society (ACS) 238th National Meeting, August 16-20, 2009. Washington, DC, USA.
  22. Yu, C-P., Liang, Z., Das, A. Dolan, E. Beerman, D. and Hu, Z. Q. 2009. Simultaneous electricity generation and nutrient removal in a membrane-aerated microbial fuel cell reactor. AEESP Biennial Conference, Iowa City, IA.
  23. Choi, O.K. Yang, Y., Chen, Q. and Hu, Z. Q. 2009. The inhibitory effect of silver nanoparticles to waste treatment microorganisms. AEESP Biennial Conference, Iowa City, IA.
  24. Liang, Z. H. and Hu, Z. Q. 2009. Biological Nutrient Removal for On-site Wastewater Treatment Systems Using a Membrane Aerated Bioreactor. World Environmental & Water Resources Congress in Kansas City, Missouri. pp. 5550-5556.
  25. Choi, O.K. and Hu, Z. Q. 2009. Nitrification inhibition by UVA photocatalytic TiO2 nanoparticles: The role of reactive oxygen species on Nanotoxicity. World Environmental & Water Resources Congress in Kansas City, Missouri. p2540-2546.
  26. Choi, O.K. and Hu, Z. Q. 2008. Nitrification inhibition by silver nanoparticles, silver ions, and silver chloride colloids. 4th International Young Water Professionals Conference (16-18 July 2008, Berkeley USA).
  27. Hu, Z. Q. 2008. Sustainable nanotechnology education for engineers, in ASEE Annual Conference and Exposition, Conference Proceedings.
  28. Choi, O.K. and Hu, Z. Q. 2008. Impact of silver nano-particles on wastewater treatment. 2008 ACWA Annual Conference, Oregon. Invited by the Oregon Association of Clean Water Agencies.
  29. Liang, Z. H. and Hu, Z. Q. 2008. Nutrient removal in on-site wastewater treatment systems using membrane-aerated bioreactor techniques. Missouri MWEA/AWWA 2008 Joint Annual Meeting, Osage Beach, Missouri
  30. Nguyen, H. Hu, Z. Q. 2008. Microbial fuel cell based bioreactor for nutrient removal. Missouri MWEA/AWWA 2008 Joint Annual Meeting, Osage Beach, Missouri.
  31. Choi, O.K., Surampalli, R.Y., and Hu, Z.Q. 2008. Reactive oxygen species related microbial growth inhibition by silver nanoparticles. International Environmental Nanotechnology Conference: Applications and Implications, Chicago, IL.
  32. Hu, Z. Q. and Lion, L. W. 2007. Determination of metal spatial distribution in biofilms. AEESP Biennial Conference, Virginia Tech, VA.
  33. Hu, Z. Q. 2007. Electrochemical measurement of microbial decay coefficients. 80th Annual Water Environment Federation Conference, San Diego, CA.
  34. Choi, O. K. and Hu, Z. Q. 2007. Nitrification inhibition by silver nanoparticles 13th Mid-America Environmental Engineering Conference, Columbia, MO.
  35. Hu, Z. Q. 2007. Improvement of electricity generation using a baffle-chamber membraneless microbial fuel cell. 37th Mid-Atlantic Industrial and Hazardous Waste Conference, University of Cincinnati, Cincinnati, OH.
  36. Hu, Z. Q. and Choi, O. K. 2007. Metabolic selection of floc-forming microorganisms to remove nitrogen from wastewater containing toxic organic chemicals. 37th Mid-Atlantic Industrial and Hazardous Waste Conference, University of Cincinnati, Cincinnati, OH.
  37. Hu, Z. Q. Jin, J. and Lion, L. W. 2006. Spatial determination of metal distribution in biofilms. ACE06 American Water Work Association Annual Conference, San Antonio, Texas.
  38. Hidalgo-Casanueva, C.G., Hay, A.G., Hu, Z. Q., Houston, P., Shuler, M. L., Ghiorse, W.C., Abruña, H., and Lion, L.W. 2005. Zinc visualization in Escherichia coli PHL628 biofilms. American Society of Limnology and Oceanography, June 19-24, 2005.
  39. Houston, P.L., Hu, Z.Q., Hidalgo, G., Hay, A., Shuler, M.L., Abruna, H.D., Ghiorse, W.C., Lion, L.W. Exploring biofilms with two-photon laser scanning microscopy. 2005. Abstracts of Papers of the American Chemical Society 229: U784-U784 535-PHYS Part 2.
  40. Chandran, K. Hu, Z. Q., and Smets. B. F. 2004. Applicability of an extant batch respirometry assay in describing dynamics of ammonia and nitrite oxidation in a nitrifying bioreactor. 8th World Water Congress, 19-24 September. Marrakech, Marocco.
  41. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. 2002. “A comparative study of nitrification inhibition by heavy metals: the influence of metal exposure time on biological effect.” 8th Annual Industrial Waste Technical and Regulatory Conference, Atlanta City, NJ.
  42. Chandran, K., Hu, Z. Q., Krach, W. and Smets, B. F. 2002. “Dynamics of genotypics, biokinetics and performance in a continuously operated nitrifying bioreactor”. 3rd IWA World Congress. Melbourne, Australia.
  43. Chandran, K. Hu, Z. Q., and Smets. B. F. 2001. “Optimal experimental design of batch respirometric assays for biokinetic estimation of ammonia and nitrite oxidation”. 2nd IWA World Congress. Berlin, Germany.
  44. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. 2001. “Effects of Nickel on nitrifying enrichment cultures”. 33nd Mid-Atlantic Industrial and Hazardous Waste Conference. Manhattan College, Riverdale, NY, 66-76.
  45. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. 2001. “Evaluation of nitrification inhibition by heavy metals”. 75th Annual Water Environment Federation Conference, Atlanta, GA.
  46. Chandran, K. Hu, Z. Q., and Smets. B. F. 2001. “Optimal experimental design for estimating ammonia and nitrite oxidation biokinetics from batch respiorgrams”. 75th Annual Water Environment Federation Conference, Atlanta, GA.
  47. Hu, Z. Q., Chandran, K., Grasso, D., and Smets, B. F. 2000. “Comparison of different physical-chemical methods to determine truly soluble COD in wastewater”. 32nd Mid-Atlantic Industrial and Hazardous Waste Conference, 2000. RPI, Troy, NY, 581-590.
  48. Hu, Z. Q. and Schulthess, C. P. 1998. “Proton and selenate coadsorption on an Al oxide”. Agronomy Abstracts, p. 195, Am. Soc. Agron., Madison, WI.