微晶纤维素基碳酸钙复合材料对Cd2+和Pb2+的捕集与回收研究
Trapping and recovery of Pb2+and Cd2+by microcrystalline cellulose-based calcium carbonate composites
孟浩江 1张蕾 1张祎 1喻先伟 1王敏 1武晓龙 1郭军康1
作者信息
- 1. 陕西科技大学 环境科学与工程学院,陕西 西安 710021
- 折叠
摘要
以微晶纤维素(MCC)和碳酸钙(CaCO3)为基底,通过冷却活化和离子交换反应制备了 MCC@CaCO3 复合材料.研究捕集时间、浓度及 pH 等因素对溶液中 Cd2+和 Pb2+去除的影响.结果表明,当 Ca2+的投加量为0.1 mol、pH值为5 时,MCC@CaCO3 对Cd2+的吸附容量达503.47 mg/g,对Pb2+的吸附容量达1 076.05 mg/g,去除率99.7%.
Abstract
MCC@CaCO3 Composite material was prepared by cooling activation and ion exchange reaction using cellulose microcrystalline(MCC)and calcium carbonate(CaCO3)as substrates.The effects of fac-tors such as capture time,concentration,and pH on the removal of Cd2+and Pb2+from the solution were studied.The results showed that when the amount of Ca2+was 0.1 mol and the pH value was 5,the ad-sorption capacity of MCC@CaCO3 for Cd2+could reach 503.47 mg/g,and that for Pb2+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Key words
cellulose microciystalline/calcium carbonate/lead and cadmium ion contamination/water treatment引用本文复制引用
基金项目
国家自然科学基金(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)
出版年
2024
NETL
NSTL
万方数据