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Effect of coexisting compounds on the sorption and reduction of trichloroethylene with iron
Author(s) -
Cho HyunHee,
Park JaeWoo
Publication year - 2005
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/04-051r.1
Subject(s) - trichloroethylene , chemistry , sorption , chromate conversion coating , inorganic chemistry , nitrate , carbon tetrachloride , reaction rate constant , environmental chemistry , sulfate , organic chemistry , adsorption , corrosion , kinetics , physics , quantum mechanics
Batch experiments were performed to study the effect of coexisting compounds on trichloroethylene (TCE) dechlorination and sorption in the presence of iron. Competitive sorption of TCE was observed with naphthalene as a coexisting contaminant, but the TCE reduction rate slightly increased with naphthalene, which is hardly subject to reduction. With carbon tetrachloride, nitrate, and chromate as reducible cocontaminants, the competitive reduction of TCE was observed in binary‐contaminant systems. The reduction rate constant of TCE by iron filings decreased 1.5 times with carbon tetrachloride because of the competition for electrons. The TCE reduction rate with nitrate decreased five times because of the competition for electrons and the enhanced passivation. The sorbed mass of TCE on iron surface with chromate increased more than that without chromate because of the formation of (Cr, Fe)(OH) 3 precipitations.