无机盐工业 ›› 2024, Vol. 56 ›› Issue (3): 105-115.doi: 10.19964/j.issn.1006-4990.2023-0268
姚健康1(), 胡硕真1, 钮东方1, 吴建平2, 张新胜1(
)
收稿日期:
2023-05-15
出版日期:
2024-03-10
发布日期:
2024-03-14
通讯作者:
张新胜(1963— ),男,博士,教授,研究方向为环境电化学工程;E-mail:xszhang@ecust.edu.cn。作者简介:
姚健康(1996— ),男,硕士,研究方向为工业废盐处理;E-mail:736400194@qq.com。
YAO Jiankang1(), HU Shuozhen1, NIU Dongfang1, WU Jianping2, ZHANG Xinsheng1(
)
Received:
2023-05-15
Published:
2024-03-10
Online:
2024-03-14
摘要:
为了实现氯化钠有机废盐的资源化利用,以某香料企业的氯化钠有机废盐为研究对象,在单室电化学氧化的基础上提出了一种资源化处理氯化钠废盐的一膜两室电解工艺,在降解废盐有机物的同时获取氢氧化钠。在单室电解槽中探究了废盐中有机物的电化学氧化降解条件和降解途径,研究表明,在电流密度为600 A/m2、反应温度为35 ℃、初始pH为6的最佳电解条件下,电解8 h后废盐模拟废水化学需氧量(COD)去除率为92.3%,色度去除率为100%,电流效率为32.3%。有机物降解的主要途径为电极产生的活性氯和羟基自由基对有机物的间接氧化。通过调节阳极液pH和进料方式,在相同电解条件下电解8 h,一膜两室工艺阳极COD去除率可达87.2%,阴极氢氧化钠总产量可达11.33 g。该工艺具有反应条件温和、工艺流程简单及无二次污染等特点,可为氯化钠有机废盐的资源化处理提供参考。
中图分类号:
姚健康, 胡硕真, 钮东方, 吴建平, 张新胜. 电化学法处理香料工业氯化钠有机废盐的研究[J]. 无机盐工业, 2024, 56(3): 105-115.
YAO Jiankang, HU Shuozhen, NIU Dongfang, WU Jianping, ZHANG Xinsheng. Study on electrochemical treatment of sodium chloride organic waste salt in spice industry[J]. Inorganic Chemicals Industry, 2024, 56(3): 105-115.
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