溶液中铬离子的电絮凝法分离研究

doi:10.19677/j.issn.1004-7964.2022.03.005

皮革科学与工程 ›› 2022, Vol. 32 ›› Issue (3): 24-29.doi: 10.19677/j.issn.1004-7964.2022.03.005

溶液中铬离子的电絮凝法分离研究

郭军¹, 陈慧^1,2,*, 单志华^1,2,*

1.四川大学轻工科学与工程学院,四川成都 610065;
2.四川大学皮革化学与工程教育部重点实验室,四川成都 610065

收稿日期:2021-11-02 出版日期:2022-06-28 上线日期:2022-05-16
通讯作者: ^*
作者简介:郭军（1987-）,男,四川达州人,在读博士研究生,研究方向为生物质材料应用。
基金资助:
四川省重点研发项目（2019YFG0269）

Study on the Separation of Chromium Ion from Solution by Electrocoagulation

GUO Jun¹, CHEN Hui^1,2,*, SHAN Zhihua^1,2,*

1. College of Biomass Science and Engineering, Sichuan University,Chengdu 610065, China;
2. Key Laboratory of Leather Chemistry and Engineer of Ministry of Education, Sichuan University, Chengdu 610065, China

Received:2021-11-02 Online:2022-06-28 Published:2022-05-16

摘要/Abstract

摘要： 采用Cr₂(SO₄)₃为模拟含Cr废液,对电絮凝法的除Cr效果进行考察。恒压电絮凝实验结果表明,Al阳极比Fe阳极更适合电絮凝处理。Al阳极电絮凝法处理Cr₂(SO₄)₃的优化实验条件为：电流密度350 A/m²,电解质质量浓度15 g/L,初始pH值4.5,时间90 min。该方法的Cr去除率达到99.86 %,Cr质量浓度降至3.39 mg/L。电流效率分析表明,Al阳极电絮凝法的电流效率较低,电流密度对电流效率的影响小。Al阳极电絮凝法对溶液中的Cr离子分离效果较好,为废水中Cr资源的回收利用提供了新的思路。

关键词: 电絮凝法, 含Cr废液, Al电极, 电流效率

Abstract: In this paper, Cr₂(SO₄)₃ was used as simulated Cr-containing waste water to investigate the removal effect of Cr by electrocoagulation. The results of constant voltage electrocoagulation experimentals show that Al anode is more suitable for electrocoagulation than Fe anode. The optimal conditions for the treatment of Cr₂(SO₄)₃ by Al anode electrocoagulation are as follows: current density 350 A/m², electrolyte concentration 15 g/L, initial pH 4.5, and time 90 min. The Cr removal rate reached 99.86 % and the Cr content was reduced to 3.39 mg/L. The current efficiency analysis shows that the current efficiency of Al anode electrocoagulation is low, and the current density has little influence on the current efficiency. The Al anode electrocoagulation method can achieve a good effect of Cr separation from solution, which provides a new idea for the recovery and utilization of Cr resources in Cr-containing waste water.

Key words: electrocoagulation, Cr-containing waste water, Al electrodes, current efficiency

中图分类号:

O646
X794

郭军, 陈慧, 单志华. 溶液中铬离子的电絮凝法分离研究[J]. 皮革科学与工程, 2022, 32(3): 24-29.

GUO Jun, CHEN Hui, SHAN Zhihua. Study on the Separation of Chromium Ion from Solution by Electrocoagulation[J]. Leather Science and Engineering, 2022, 32(3): 24-29.

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溶液中铬离子的电絮凝法分离研究

Study on the Separation of Chromium Ion from Solution by Electrocoagulation

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