电絮凝技术在废弃涤纶醇解液脱色中的应用  

Decolorization of polyester alcoholysis solution by electrocoagulation

作　　者：陈欣 张家琳 王纪冬 李晓强[1,2] 葛明桥[1,2] CHEN Xin;ZHANG Jialin;WANG Jidong;LI Xiaoqiang;GE Mingqiao(School of Textile and Clothing,Jiangnan University,Wuxi,Jiangsu 214122,China;Key Laboratory of Eco-Textiles(Jiangnan University),Ministry of Education,Wuxi,Jiangsu 214122,China)

机构地区：[1]江南大学纺织服装学院,江苏无锡214122 [2]生态纺织教育部重点实验室(江南大学),江苏无锡214122

出　　处：《纺织学报》2019年第10期98-104,共7页Journal of Textile Research

基　　金：国家重点研发计划项目(2016YFB0302901);中央高校基本科研业务费专项资金重点项目(JUSRP51723B);国家自然科学基金项目(51503083)

摘　　要：针对涤纶醇解液造成的环境污染问题,采用电絮凝技术对其进行脱色。将铝电极和铜电极分别作为电絮凝反应系统的阳极和阴极,研究了电絮凝过程中电解电压、电解质质量浓度、初始pH值以及染料初始质量浓度等因素对脱色率的影响。通过对电极和絮凝体进行相关测试,探讨电絮凝技术的脱色机制,并建立了涤纶醇解液脱色过程的动力学方程。结果表明:在电压为20V,初始pH值为8,电解质质量浓度为0.80g/L,染料初始质量浓度为60mg/L的条件下,醇解液的脱色效果较好,电解80min后脱色率可超过95%以上;铝电极处理涤纶醇解液的电絮凝过程较吻合动力学二级反应过程。In order to solve the problem of environmental pollution caused by polyester alcoholysis solution,the electrocoagulation was used to decolorize the solution.An aluminum electrode and a copper electrode were used as the anode and cathode of the electroflocculation reaction system,respectively.The influences of electrolysis voltage,electrolyte concentration,initial pH value and initial dye concentration on the decolorization rate during electroflocculation were studied.The electrodes and flocs were tested,the main decolorization mechanism of the electrocoagulation process was discussed,and the kinetic equation of the decolorization was established.The results show that the optimal process parameters include a voltage of 20 V,an initial pH value of 8,an electrolyte concentration of 0.80 g/L and an initial concentration of 60 mg/L,and the decolorization rate is high than 95% after electrolyzing for 80 min.The electrocoagulation process of polyester alcoholysis solution with an aluminum electrode conforms to the second\|order kinetic model.

关 键 词：废弃涤纶 醇解液 电絮凝 脱色率 涤纶回收利用 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程]