期刊信息
主管单位:教育部
主办单位:重庆大学
主  编:刘汉龙
地  址:重庆市沙坪坝区沙正街174号 重庆大学期刊社 《土木与环境工程学报》编辑部
邮政编码:400044
电  话:023-65111322;023-65111863
电子邮件:xuebao@cqu.edu.cn
国际标准刊号:ISSN 2096-6717
国内统一刊号:CN 50-1218/TU
邮发代号:78-48
每期定价:¥20
全年定价:¥120
访问统计
  • 您是本站第3424909位读者
  • 今日访问801
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 102次   下载 48 本文二维码信息
码上扫一扫!
分享到: 微信 更多
响应面法优化光聚合CMCTS-g-CPAM及其污泥脱水性能
孙文全1, 朱辉1, 孙永军1, 郑怀礼2,3, 唐梦丹1
1.南京工业大学 城市建设学院, 南京 211800;2.重庆大学 城市建设与环境工程学院;3.重庆市水处理混凝剂工程技术研究中心, 重庆 400045
摘要:
以羧甲基壳聚糖(CMCTS)为主链模板、丙烯酰胺(AM)和甲基丙烯酰氧乙基三甲基氯化铵(DMC)为共聚单体,通过紫外光引发聚合法制备新型阳离子絮凝剂CMCTS-g-CPAM。采用响应曲面法(RSM)得到CMCTS-g-CPAM的最佳制备条件:光照时间为2 h、光引发剂质量分数为0.04%、pH值为8。接枝共聚物CMCTS-g-CPAM的红外光谱(FT-IR)和核磁共振(1H-NMR)表征表明AM、DMC和CMCTS已成功聚合。污泥脱水实验验证其具有良好的污泥脱水性能:在絮凝剂投加量和pH值分别为30 mg/L和10时,污泥比阻(SRF)由9.10×1013 m/kg降至1.96×1013 m/kg,滤饼含水率(FCMC)从90.15%降至79.28%,其污泥脱水效果和经济效益均优于市售CPAM。同时,此研究在污泥脱水中的应用为污泥脱水领域的絮凝处理和改性壳聚糖提供了一定参考。
关键词:  羧甲基壳聚糖  紫外光引发聚合  丙烯酰胺  污泥脱水  响应面法
DOI:10.11835/j.issn.2096-6717.2019.083
分类号:X528.41
基金项目:国家自然科学基金(51508268);江苏省自然科学基金(BK20150951);国家重点研发计划(2017YFB0602500);中国博士后科学基金(2016M591835)
Optimization of photopolymerization CMCTS-g-CPAM by response surface methodology and evaluation of sludge dewatering performance
Sun Wenquan1, Zhu Hui1, Sun Yongjun1, Zheng Huaili2,3, Tang Mengdan1
1.College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China;2.School of Urban Construction and Environmental Engineering;3.Chongqing Engineering Research Center of Water Treatment Coagulant, Chongqing University, Chongqing 400045, P. R. China
Abstract:
The novel cationic flocculant of CMCTS-g-CPAM was synthesized by polymerizing carboxymethyl chitosan (CMCTS), acrylamide (AM) and methacryloyloxyethyl trimethyl ammonium chloride (DMC) under ultraviolet (UV) radiation. The response surface method was adopted to obtain the optimum preparation conditions:illumination time 2 h, initiator mass fraction 0.04%, pH=8. FT-IR and 1H-NMR of the graft copolymer indicated that AM, DMC and CMCTS have been successfully aggregated. Additionally, it can be verified by sludge dewatering test that it has good sludge dewatering performance:SRF decreased from 9.10×1013 m/kg to 1.96×1013 m/kg, and FCMC decreased from 90.15% to 79.28%,at the flocculant dosage and pH of 30 mg/L and 10, respectively. Sludge dewatering effect and economic benefits of CMCTS-g-CPAM are significantly precede to commercially available CPAM. Simultaneously, the research provides a reference for the flocculation treatment in the field of sludge dewatering and the application of chitosan modification in sludge dewatering.
Key words:  carboxymethyl chitosan  ultraviolet light initiated polymerization  acrylamide  sludge dewatering  response surface mathod
Copyright@ 2008 All Rights Reserved.
关注微信二维码