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- Okkyoung Choi, Zhiqiang Hu
- Environmental science & technology
- 2008
The intrinsic slow growth of nitrifying bacteria and their high sensitivity to environmental perturbations often result in cell growth inhibition by toxicants. Nanoparticles are of great concern to… (More)
- Okkyoung Choi, Kathy Deng, Nam-jung Kim, Louis Ross, Rao Y. Surampalli, Zhiqiang Hu
- Water research
- 2008
Emerging nanomaterials are of great concern to wastewater treatment utilities and the environment. The inhibitory effects of silver nanoparticles (Ag NPs) and other important Ag species on microbial… (More)
- Zhuoran Liang, Atreyee Das, Zhiqiang Hu
- Water research
- 2010
The growing release of nanosilver into sewage systems has increased the concerns on the potential adverse impacts of silver nanoparticles (AgNPs) in wastewater treatment plants. The inhibitory… (More)
- Okkyoung Choi, Chang-ping Yu, G Esteban Fernández, Zhiqiang Hu
- Water research
- 2010
Biofilms are often more resistant to toxic chemicals such as heavy metals and antimicrobial agents than planktonic cells. Nanosilver has a broad range of applications with strong antimicrobial… (More)
- Jia You, Atreyee Das, Elizabeth M. Dolan, Zhiqiang Hu
- Water research
- 2009
Ammonia oxidation is critical to global nitrogen cycling and is often thought to be driven only by ammonia-oxidizing bacteria. The recent finding of new ammonia-oxidizing organisms belonging to the… (More)
- Zhiqiang Hu, Kartik Chandran, Domenico Alessandro Grasso, Barth F Smets
- Environmental science & technology
- 2002
Heavy metals have been postulated to cause significant nitrification inhibition. Using biomass from a well-controlled continuously operated lab-scale nitrifying bioreactor, the effect of nickel and… (More)
- Yu Yang, Qian Chen, Jeffrey D. Wall, Zhiqiang Hu
- Water research
- 2012
Silver nanoparticles (AgNPs, nanosilver) entering the sewers and wastewater treatment plants (WWTPs) are mostly accumulated in the sludge. In this study, we determined the impact of AgNPs on… (More)
- Zhiqiang Hu, Kartik Chandran, Domenico Alessandro Grasso, Barth F Smets
- Environmental science & technology
- 2003
The goal of this study was to explore the relationship between metal extracellular sorption, intracellular accumulation, and nitrification inhibition. Metal sorption on nitrifying biomass was rapid… (More)
- Chiqian Zhang, Zhuoran Liang, Zhiqiang Hu
- Water research
- 2014
Silver nanoparticles (nanosilver or AgNPs) have excellent antimicrobial properties. Because of their increasing use, there is a concern about the potential impact of AgNPs in wastewater treatment… (More)
- Atreyee Sims, J. W. Horton, +5 authors Zhiqiang Hu
- Water research
- 2012
Ammonia-oxidizing organisms play an important role in wetland water purification and nitrogen cycling. We determined soil nitrification rates and investigated the seasonal and spatial distributions… (More)