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Preparation of New Big Banyan Leaves Absorbent and Its Adsorption of Cd2+
Author(s): HUANG Dong-lan, ZENG Jie-tao, WANG Chao-fan, LIU Jian-min
Pages: 42-
47
Year: 2016
Issue:
6
Journal: Journal of Shaoguan University
Keyword: 大榕树叶; 化学改性; Cd2+; 动力学模型; 等温吸附模型;
Abstract: 以大榕树叶为原料,分别采用皂化、交联和接枝共聚3种化学方法对大榕树叶粉末进行改性,并研究了其对水中Cd2+的吸附行为.考察了吸附过程中的溶液pH、固液比、温度、吸附时间对吸附性能的影响,并通过测定化学耗氧量(COD)和傅里叶变换红外光谱(FTIR)对大榕树叶吸附剂结构特性进行表征研究结果表明:当Cd2+初始浓度为50 mg·L-1,pH值为5.5~6.0,温度为35℃,3种改性方法制得的大榕树叶吸附剂在60 min内能达到吸附平衡,吸附过程符合准二级吸附动力学方程.
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