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首页> 外文期刊>Environmental toxicology and chemistry >EFFECT OF COEXISTING COMPOUNDS ON THE SORPTION AND REDUCTION OF TRICHLOROETHYLENE WITH IRON
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EFFECT OF COEXISTING COMPOUNDS ON THE SORPTION AND REDUCTION OF TRICHLOROETHYLENE WITH IRON

机译：共存化合物对铁吸附和还原三氟乙烯的影响

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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.
机译：进行批处理实验以研究在铁存在下共存化合物对三氯乙烯（TCE）脱氯和吸附的影响。萘作为一种共存的污染物观察到了三氯乙烯的竞争性吸附，但三氯乙烯的三氯乙烯的还原率略有增加，几乎不发生还原。使用四氯化碳，硝酸盐和铬酸盐作为可还原的共污染物，在二元污染物系统中可观察到三氯乙烯的竞争性降低。由于电子的竞争，铁屑对三氯乙烯的还原速率常数与四氯化碳相比降低了1.5倍。硝酸盐的TCE还原速率下降了五倍，这是因为电子的竞争和钝化的增强。由于形成了（Cr，Fe）（OH）_3沉淀物，含铬的铁表面上三氯乙烯的吸附质量增加了。

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