Removal of Cr(Ⅲ) from acid-dissolution water of chromium sludge by cation exchange resin
The purpose of the present study was to demonstrate the feasibility of adsorbent IRN77 resin for removal of Cr(Ⅲ) from acid-dissolution water of chromium sludge.Extractions of Cr(Ⅲ) from a model solution and a acid-dissolution water of chromium sludge were studied by IRN77 cation-exchange resin, respectively.The results suggested that extraction of Cr(Ⅲ) with this resin followed the Lagergren first-order kinetics.The resin was high selective for Cr(Ⅲ) sorption in the pH range 1-5 from a model solution containing 150 mg/L Cr(Ⅲ), and a Cr(Ⅲ) extraction above 99% was obtained.The studies further showed that 80% Cr(Ⅲ) from a diluted acid-dissolution water containing about 150 mg/L Cr(Ⅲ) could be removed which validated the process developed with model waste solution.At the same time, from the loaded resin 99% Cr(Ⅲ) was eluted with 10% H2SO4.Therefore, this cation-exchange resin could be used as an efficient adsorbent material for the removal of chromium from acid-dissolution water of chromium sludge.
Chromium Adsorption Ion-exchange resin Acid-dissolution water Chromium sludge
Huai LI Zifang CHI Jianzheng LI
State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 1 College of Environment and Resources,Jilin University,Changchun 130021,PR China;State Environmental
国际会议
香港
英文
506-513
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）