期刊论文

中文

湖南城市学院学报(自然科学版)

1672-7304

2020

29

1

75-78

10.3969/j.issn.1672-7304.2020.01.0015

2017JJ2020:湖南省自然科学基金 16C0303:湖南省教育厅科学研究项目 2015JZ24:益阳市科技计划

本校为第一机构

将海藻酸钠与羟乙基纤维素混合,采用戊二醛交联,制备得到复合膜(GHS),并将其用于吸附去除含铜废水中的Cu(Ⅱ);同时,考察吸附剂投加量、溶液初始pH值、初始浓度和接触时间等因素对Cu(Ⅱ)去除效果的影响.研究表明:GHS对Cu(Ⅱ)的吸附在60 min时基本达到平衡,溶液初始pH值为6时达到最佳吸附效果;其吸附过程符合Freundlich等温吸附模型,且吸附动力学过程符合准二级动力学(R^2>0.999);pH值影响及D-R模型分析结果表明GHS吸附Cu(Ⅱ)机理主要表现为离子交换.

The composite membrane(GHS) is prepared by mixing sodium alginate with hydroxyethyl cellulose and crosslinking with glutaraldehyde, and it is used to adsorb and remove Cu(Ⅱ) from wastewater containing copper. At the same time, the influence of the amount of adsorbent, the initial pH value of solution, the initial concentration and contact time on the removal effect of Cu(Ⅱ) is investigated. The results show that the adsorption of GHS on Cu(Ⅱ) reaches equilibrium basically at 60 min, and the optimal adsorption effect is achieved when the init...