Results 211 to 220 of about 1,732,621 (249)

Anaerobic Corrosion of Zero-Valent Iron at Elevated Temperatures

Environmental Science & Technology, 2021
Increasing groundwater temperatures caused by global warming, subsurface infrastructure, or heat storage projects may interfere with groundwater remediation techniques using zero-valent iron (ZVI) technology by accelerating anaerobic corrosion. The corrosion behavior of three ZVIs widely used in permeable reactive barriers (PRBs), Peerless cast iron ...
Adrian D. Metzgen, Andreas Dahmke, Markus Ebert   +2 more
openaire   +2 more sources

Dechlorination of Hexachlorobenzene by Zero-Valent Iron

Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management, 2004
Chemical reduction of hexachlorobenzene (HCB) by metallic iron was investigated. Since the percentage of HCB transformation is almost the same as that of chloride ion production, no chlorinated intermediates in the solution was formed during the reduction reaction.
Ming-Chun Lu, Jin Anotai, Chih-Hsiang Liao, Wang-Ping Ting   +3 more
openaire   +1 more source

Zero-Valent Iron for Water Treatment

Environmental Technology, 2000
The use of zero-valent iron in the treatment of hazardous water contaminants is reviewed. The review concentrates on experimental procedures employed in the investigation of a range of applications for zero -valent iron and the efficacy of the processes.
T. Bigg, S. J. Judd
openaire   +1 more source

Dechlorination of γ-Hexachlorocyclohexane by Zero-Valent Metallic Iron

Journal of Hazardous Materials, 2009
This study investigated the rates and pathways of gamma-hexachlorocyclohexane (gamma-HCH) dechlorination by granular zero-valent iron under different pH, iron dosage and temperature conditions. It was found that gamma-HCH was rapidly reduced to benzene and chlorobenzene (CB) with benzene as the major product and that the dechlorination likely follows ...
Weilin Huang
exaly   +3 more sources

REDUCTION OF 1,2-DIBROMOETHANE IN THE PRESENCE OF ZERO-VALENT IRON

Environmental Toxicology and Chemistry, 1999
AbstractThe degradation reaction of 1,2-dibromoethane (ethylene dibromide or EDB) in water was studied in the presence of zero-valent iron (acid-cleaned, cast iron) in well-mixed batch aqueous systems. The observed products were ethylene and bromide ions. Carbon and bromine mass recoveries of ≥ 95% were obtained.
Venkat K Rajagopal, David R Burris
openaire   +1 more source

Mapping the Reactions in a Single Zero-Valent Iron Nanoparticle

Environmental Science & Technology, 2017
Nanoscale zerovalent iron (nZVI) possesses unique functionalities for metal-metalloid removal and sequestration. So far, direct evidence on the heavy metal-nZVI reactions in the solid phase is still limited due to low concentration of heavy metals and small size of nanoparticles.
Lan Ling, Xiaoyue Huang, Meirong Li, Wei-xian Zhang   +3 more
openaire   +2 more sources

Transport of Nanoscale Zero-Valent Iron in the Presence of Rhamnolipid

Science of The Total Environment
Nanoscale zero-valent iron (nZVI) particles have gained widespread use for in-situ treatment of various chlorinated hydrocarbons. Their non-toxic nature, affordability, and minimal maintenance requirements have made them a favored material for nanoremediation.
Alireza, Abbasi, Lin, Qi, Gang, Chen
openaire   +2 more sources

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

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
openaire   +2 more sources

Modeling arsenic removal by nanoscale zero-valent iron

Environmental Monitoring and Assessment, 2020
Arsenic removal by nanoscale zero-valent iron (NZVI) was modeled using the USGS geochemical program PHREEQC. The Dzombak and Morel adsorption model was used. The adsorption of As(V) onto NZVI was assumed to happen because of the hydrous ferric oxide (Hfo) which was the surface oxide for the model.
Umma S. Rashid, Bernhardt Saini-Eidukat, Achintya N. Bezbaruah   +2 more
openaire   +2 more sources