摘要
采用两隔室双极膜电渗析装置,研究了由巯基乙酸钠制备巯基乙酸的可行性.实验结果表明,利用双极膜电渗析技术能够在不添加其他物质的条件下,将巯基乙酸钠转化成高附加值的巯基乙酸和氢氧化钠,避免了副产钠盐,同时生成的氢氧化钠可以回用,达到资源化利用和清洁生产的目的.巯基乙酸钠的转化率达到98%以上,电流效率为67.2%,产酸能耗为665.8kW·h/t.相比于传统生产方法,本方法简化了巯基乙酸的生产工艺流程,有效降低了生产成本,提高了巯基乙酸收率.
In this paper,the feasibility of thioglycolic acid from thioglycolate sodium feed with a twocompartment bipolar membrane electrodialysis(BMED)device was invostigated.It was found that sodium thioglycolate could be converted into high value-added thioglycolic acid and sodium hydroxide without adding other addtives and sodium salt by-products.At the same time,the production of sodium hydroxide can be reused for the purpose of resource utilization and green production.The conversion rate of sodium thioglycolate was over 98%,the current efficiency was 67.2%,the energy consumption of acid was 665.8 kW·h/t.Comparing with the traditional method,the BMED technique can simply the production process,reduce the production cost and improve the yield of thioglycolic acid.
作者
张委
张莉
谢永刚
康巧能
李明阳
刘学良
娄玉峰
ZHANG Wei;ZHANG Li;XIE Yonggang;KANG Qiaoneng;LI Mingyang;LIU Xueliang;LOU Yufeng(Key Laboratory of Charged Polymeric Membrane Materials,Weifang 261061,China;Weifang Vocational College,Weifang 262737,China;Key Laboratory of Marine Fine Chemicals of Shangdong Province,Weifang 262737,China;Shandong Tianwei Membrane Technology Co.,Ltd.,Weifang 261061,China)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2021年第5期114-120,138,共8页
Membrane Science and Technology
基金
山东省重大科技创新工程项目(2019JZZY010511)
潍坊职业学院首届博士科研基金项目(潍职院教【2021】5号)。
关键词
双极膜
电渗析
巯基乙酸钠
巯基乙酸
bipolar membrane
electrodialysis
thioglycolic sodium
thioglycolic acid
