Results 201 to 210 of about 1,732,621 (249)
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Comparison of aerobic atrazine degradation with zero valent aluminum and zero valent iron
Journal of Hazardous Materials, 2018This study systematically compared the degradation of atrazine (ATR) with aerobic zero-valent aluminum (ZVAl/Air) and zero-valent iron (ZVI/Air) systems. By comparing the ATR degradation curves and rate in the ZVAl/Air and the ZVI/Air systems, a significant induction period was observed in the ZVAl/Air system, and the pseudo-first-order rate constant ...
Wenjuan Shen, Hongliang Kang, Zhihui Ai
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Carbon Disulfide Removal by Zero Valent Iron
Environmental Science & Technology, 2007The use of zero valent iron (Fe0) for the remediation of water contaminated with carbon disulfide (CS2), a common groundwater contaminant, has been evaluated in this study. Mineralogical analysis of Fe0 filings and polished Fe0 cross-sections indicates that iron sulfide is formed due to the removal of carbon disulfide from solution by Fe0. The kinetics
Kalin, R., McGeough, K.L., Myles, P.
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Journal of Materials Research, 2005
Hollow and nanoporous particles of zero-valent iron (ZVI) were prepared with template-directed synthesis. Polymer resin beads (0.4 mm diameter) were coated with nanoscale iron particles by reductive precipitation of ferrous iron [Fe(II)] with sodium borohydride. The resin was calcinated at 400 °C to produce hollow and nanoporous iron spheres.
Jiasheng Cao +2 more
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Hollow and nanoporous particles of zero-valent iron (ZVI) were prepared with template-directed synthesis. Polymer resin beads (0.4 mm diameter) were coated with nanoscale iron particles by reductive precipitation of ferrous iron [Fe(II)] with sodium borohydride. The resin was calcinated at 400 °C to produce hollow and nanoporous iron spheres.
Jiasheng Cao +2 more
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Fenton's oxidation of MTBE with zero-valent iron
Water Research, 2004Methyl tert-butyl ether (MTBE) has become a contaminant of increasing concern in the U.S. Traditional remediation technologies are successful in removing MTBE from contaminated water, but usually transfer the contaminant from the aqueous to another phase.
John A, Bergendahl, Timothy P, Thies
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Reduction of nitroaromatic pesticides with zero-valent iron
Chemosphere, 2004Reduction of eleven nitroaromatic pesticides was studied with zero-valent iron powder. Average half-lives ranged from 2.8 to 6.3 h and the parent compounds were completely reduced after 48-96 h. The di-nitro groups of the 2,6-dinitroaniline herbicides were rapidly reduced to the corresponding diamines, with a negligible amount of partially reduced ...
Young-Soo, Keum, Qing X, Li
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Degradation of chloropicrin in the presence of zero-valent iron
Environmental Toxicology and Chemistry, 2005Abstract Hlonitromethanes (HNM) are a class of halogenated disinfection byproducts formed upon the addition of chlorine to water containing organic matter. Batch experiments were performed to investigate the reaction pathways and kinetics of three HNMs (chloropicrin or trichloronitromethane [TCNM], dichloronitromethane [DCNM], and ...
Carrie R, Pearson +2 more
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Water Environment Research, 2011
The treatment of wastewater from the distillery industry was carried out by using nano‐scale‐ and supported nano‐scale zero‐valent iron at a laboratory scale and ambient temperature. Effects of dilution, pH, mixing rate, zero‐valent iron dosage, and amount of support for the zero‐valent iron were investigated. All parameters had a significant effect on
Phatkanok, Homhoul +2 more
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The treatment of wastewater from the distillery industry was carried out by using nano‐scale‐ and supported nano‐scale zero‐valent iron at a laboratory scale and ambient temperature. Effects of dilution, pH, mixing rate, zero‐valent iron dosage, and amount of support for the zero‐valent iron were investigated. All parameters had a significant effect on
Phatkanok, Homhoul +2 more
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Reductive denitrification using zero‐valent iron and bimetallic iron
Environmental Technology, 2009A study of reductive denitrification of nitrate was conducted. Microscale zero-valent iron (ZVI) and palladium-coated iron (Pd/Fe) were used in the reduction of nitrate with variable pH. The solution pH was controlled by an auto controlling system instead of chemical buffers.
Jeong-Hak, Choi +3 more
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Zero‐valent bimetallic iron/copper catalyzed SET‐LRP: A dual activation by zero‐valent iron
Journal of Polymer Science Part A: Polymer Chemistry, 2011AbstractIn this work, bimetallic zero‐valent metal (Fe(0) powder and Cu(0) powder) was used to mediate the single electron transfer‐living radical polymerization (SET‐LRP) of methyl methacrylate at 25 °C in dimethyl sulfoxide. Different feed ratios of [Fe(0)]0/[Cu(0)]0 (0/1.5, 0.5/1, 0.75/0.75, 1/0.5, and 1.3/0.2) were explored. With the increase of Fe(
Lili Zhou +7 more
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Zero-valent iron nanoparticles preparation
Materials Research Bulletin, 2012Abstract Zero-valent iron nanoparticles were synthesized by hydrogenating [Fe[N(Si(CH 3 ) 3 ) 2 ] 2 ] at room temperature and a pressure of 3 atm. To monitor the reaction, a stainless steel pressure reactor lined with PTFE and mechanically stirred was designed.
S. Oropeza +4 more
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