Abstract:In this study, the feasibility of a new chemical agent named zero-valent iron (ZVI or Fe0) was used to investigate for removal of NH4+-N from coking wastewater. Reaction pH, dose of Fe0, initial NH4+-N concentration and temperature were considered variable parameters. The pH was observed as the major critical parameter. The removal rate of NH4+-N decreased as the pH increased from 3 to 6 and then increased from pH 6 to pH 9. At pH of 8.0 about in coking wastewater, the NH4+-N removal might be depended on the t… Show more
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