微晶纤维素基碳酸钙复合材料对Cd^(2+)和Pb^(2+)的捕集与回收研究  

Trapping and recovery of Pb^(2+) and Cd^(2+) by microcrystalline cellulose-based calcium carbonate composites

作　　者：孟浩江 张蕾 张祎 喻先伟 王敏 武晓龙 郭军康 MENG Hao-jiang;ZHANG Lei;ZHANG Yi;YU Xian-wei;WANG Min;WU Xiao-long;GUO Jun-kang(Environmental Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China)

机构地区：[1]陕西科技大学环境科学与工程学院,陕西西安710021

出　　处：《应用化工》2024年第4期832-837,共6页Applied Chemical Industry

基　　金：国家自然科学基金项目(41977274);陕西省科技创新团队项目(2022TD-09);陕西省重点产业链项目(2022ZDLNY02-02)。

摘　　要：以微晶纤维素(MCC)和碳酸钙(CaCO_(3))为基底,通过冷却活化和离子交换反应制备了MCC@CaCO_(3)复合材料。研究捕集时间、浓度及pH等因素对溶液中Cd^(2+)和Pb^(2+)去除的影响。结果表明,当Ca^(2+)的投加量为0.1 mol、pH值为5时,MCC@CaCO_(3)对Cd^(2+)的吸附容量达503.47 mg/g,对Pb^(2+)的吸附容量达1 076.05 mg/g,去除率99.7%。MCC@CaCO_(3) Composite material was prepared by cooling activation and ion exchange reaction using cellulose microcrystalline(MCC) and calcium carbonate(CaCO_(3)) as substrates.The effects of factors such as capture time,concentration,and pH on the removal of Cd^(2+ )and Pb^(2+) from the solution were studied.The results showed that when the amount of Ca^(2+) was 0.1 mol and the pH value was 5,the adsorption capacity of MCC@CaCO_(3) for Cd^(2+) could reach 503.47 mg/g,and that for Pb^(2+ )could reach 1 076.05 mg/g,and the removal rate could reach 99.7%.

关 键 词：微晶纤维素 碳酸钙 铅离子和镉离子污染 水处理 

分 类 号：TQ342[化学工程—化纤工业]