Results 231 to 240 of about 31,045 (265)

Use of zero-valent iron nanoparticles in inactivating microbes

Water Research, 2009
Nanoscale zero-valent iron (NZVI) particles were investigated in inactivating gram-positive Bacillus subtilis var. niger and gram-negative Pseudomonas fluorescens bacteria, and the fungus Aspergillus versicolor. NZVI particles were synthesized using NaBH(4) and Fe(NO(3))(3).9H(2)O, and the microbial suspensions were subjected to the treatments of NZVI ...
Minghui, Diao, Maosheng, Yao
openaire   +2 more sources

Removal of arsenic from water by zero-valent iron

Journal of Hazardous Materials, 2005
Batch and column experiments were conducted to investigate the effect of dissolved oxygen (DO) and pH on arsenic removal with zero-valent iron [Fe(0)]. Arsenic removal was dramatically affected by the DO content and the pH of the solution. Under oxic conditions, arsenate [As(V)] removal by Fe(0) filings was faster than arsenite [As(III)].
Sunbaek, Bang, George P, Korfiatis, Xiaoguang, Meng   +2 more
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Fluidized zero valent iron bed reactor for nitrate removal

Chemosphere, 2005
A fluidized zero valent iron (ZVI) reactor is examined for nitrate reduction. Using the system, the pH of solution can be maintained at optimal conditions for rapid nitrate reduction. For hydraulic retention times of 15 min, the nitrate reduction efficiency increases with increasing ZVI dosage.
Yi-Ming, Chen, Chi-Wang, Li, Shiao-Shing, Chen   +2 more
openaire   +2 more sources

Characterization of Stabilized Zero Valent Iron Nanoparticles

2011
The demonstrated toxicity of certain groups of organic micropollutants in water sources has motivated research in developing novel materials that are able to remove dissolved organic molecules from an aqueous system through adsorption and/or degradation.
Lauren F. Greenlee, Stephanie Hooker
openaire   +1 more source

Electrochemical depassivation of zero-valent iron for trichloroethene reduction

Journal of Hazardous Materials, 2012
Permeable reactive barriers (PRBs) composed of zero-valent iron (ZVI) are susceptible to passivation, resulting in substantially decreased rates of chlorinated solvent removal over time. In this study, the application of low electrical direct current (DC) to restore the reductive capacity of passivated ZVI was examined.
Liang, Chen, Song, Jin, Paul H, Fallgren, Norbert G, Swoboda-Colberg, Fei, Liu, Patricia J S, Colberg   +5 more
openaire   +2 more sources

Kinetics of RDX degradation by zero-valent iron (ZVI)

Journal of Hazardous Materials, 2006
Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a common groundwater contaminant at military facilities. The current research has been conducted to evaluate the use of zero-valent iron (ZVI) for the remediation of water contaminated with RDX. RDX was found to degrade rapidly in the presence of ZVI.
Pischa, Wanaratna, Christos, Christodoulatos, Mohammed, Sidhoum   +2 more
openaire   +2 more sources

Chromium removal using resin supported nanoscale zero-valent iron

Journal of Environmental Management, 2013
Resin supported nanoscale zero-valent iron (R-nZVI) was synthesized by the borohydride reduction method. Batch experiments were conducted to evaluate the factors affecting Cr(VI) removal. It was found that nZVI loads, resin dose, pH value and initial concentration of Cr(VI) were all important factors.
Fenglian, Fu, Jun, Ma, Liping, Xie, Bing, Tang, Weijiang, Han, Suya, Lin   +5 more
openaire   +2 more sources

Pressurized CO2/zero valent iron system for nitrate removal

Chemosphere, 2007
A fluidized zero valent iron (ZVI) reactor pressurized by CO(2) gas for controlling pH was employed for nitrate reduction. The proposed CO(2) pressurized system potentially has advantages of using less CO(2) gas and reaching equilibrium pH faster than CO(2)-bubbled system. However, due to weak acid nature of carbonic acid, system pH gradually increased
Chi-Wang, Li, Yi-Ming, Chen, Wei-Shuen, Yen   +2 more
openaire   +2 more sources

Impact of zero valent iron on blackwater anaerobic digestion

Bioresource Technology, 2019
The source diverted blackwater treatment is receiving growing attention as an alternative to conventional energy intensive wastewater management and treatment systems. Blackwater, containing concentrated organic materials, can be anaerobically digested to recovery bioenergy.
Rui Xu, Shengnan Xu, Lei Zhang, Anna Patricya Florentino, Zhaohui Yang, Yang Liu   +5 more
openaire   +3 more sources

An evolving view on biogeochemical cycling of iron

Nature Reviews Microbiology, 2021
Andreas Kappler, Casey Bryce, Muammar Mansor   +2 more
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