Study on Adsorption of Cadmium Ions(Ⅱ) in Aqueous Solution by Zeolite 4A
Under static state, the Cd2+in aqueous solution adsorption on zeolite 4A was studied. The results showed that the removal rate of Cd2+in aqueous solution was up to 99% after 30min at 40 when a 100m ℃ l aqueous solution of Cd2+(100mg/L) was adsorbed by 0.1g zeolite 4A and The sorbent exhibited good sorption potential for Cd2+with a peak value at pH 6.0-7.0. The sorption followed the Langmuir and Freundlich sorption model. The correlation coefficient was 0.981 and 0.998, respectively. The zeolite 4A had a 163.93 mg/g adsorption capacity for Cd2+and posses the ability of removing Cd2+due to the ion exchange primarily. Pb2+exhibited the highest effect on the sorption of Cd2+on zeolites 4A and the decreasing order of the counter ion effect is Pb2+>Mg2+>Ca2+≈Cu2+. When 0.5g/L zeolite 4A was added, the removal rate of Cd2+reached 99% at an initial Cd2+concentration of 50mg/L and competitive ions concentration of 10mg/L.
JIN Lanshu YING Bo CHU Xuefeng GAO Xiangqi
College of Land and Environment Science；Key Laboratory of Northeastern Soil and Environment of Minis College of Land and Environment Science；Key Laboratory of Northeastern Soil and Environment of Minis
国际会议
2011 International Symposium on Environmental Science and Technology(2011 环境科学与技术国际会议 2011 ISEST)
广东东莞
英文
740-745
2011-06-01（万方平台首次上网日期，不代表论文的发表时间）