Abstract
In this study, we examined effect and mechanism of removal of chlorine ion in wastewater by combination of CuSO4 and copper. Experimental studies have shown that CuSO4 combined with copper completely removes chlorine from wastewater with an initial chlorine concentration of 1300 mg/L within only 30 min at the optimum experimental conditions. The optimum experimental conditions are that CuSO4 concentration is 10 g/L, copper concentration is 8.6 g/L, and the reaction temperature is 35 ℃. The products such as CuCl and copper are characterized by XRD analyses. The CuSO4 added to the wastewater ionizes to form Cu2+, which reacts with the copper to form Cu+. Then a large amount of Cu+ reacts with chloride ions in the wastewater to produce CuCl precipitate. This leads to a decrease in the concentration of chlorine in the wastewater. This study demonstrates that the combination of CuSO4 and copper can quickly and efficiently remove chlorine from waste water.
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