[ Objective] The research aimed to study Cr wastewater treatment by steel slag. [ Method] Steel slag was used as adsorbent to remove Cr from wastewater, and influence factors of the Cr wastewater treatment by steel sl...[ Objective] The research aimed to study Cr wastewater treatment by steel slag. [ Method] Steel slag was used as adsorbent to remove Cr from wastewater, and influence factors of the Cr wastewater treatment by steel slag were studied. [ Result] Removal rate of Cr（VI） by steel slag was quite low, and the highest removal rate only reached 8.9%. Cr （III） removal by steel slag was quite effective. For 50 ml of Cr（VI） solution （100 mg/L）, after reduction, 0.30 g of steel slag （100 meshes） was added to oscillate for 35 min, and total Cr removal rate was up to 90%. Cr adsorption by steel slag was an exothermal process, and physical adsorption was dominant. Steel slag was suitable for treating acidic Cr wastewater, and its adsorption process on Cr followed Frenndlich isothermal adsorption model. [ Conduslon] It could reach the aim of ＂waste treat- ment by waste＂ bv usin~ steel slaq to treat Cr wastewater.展开更多
文摘[ Objective] The research aimed to study Cr wastewater treatment by steel slag. [ Method] Steel slag was used as adsorbent to remove Cr from wastewater, and influence factors of the Cr wastewater treatment by steel slag were studied. [ Result] Removal rate of Cr（VI） by steel slag was quite low, and the highest removal rate only reached 8.9%. Cr （III） removal by steel slag was quite effective. For 50 ml of Cr（VI） solution （100 mg/L）, after reduction, 0.30 g of steel slag （100 meshes） was added to oscillate for 35 min, and total Cr removal rate was up to 90%. Cr adsorption by steel slag was an exothermal process, and physical adsorption was dominant. Steel slag was suitable for treating acidic Cr wastewater, and its adsorption process on Cr followed Frenndlich isothermal adsorption model. [ Conduslon] It could reach the aim of ＂waste treat- ment by waste＂ bv usin~ steel slaq to treat Cr wastewater.
