化工学报 ›› 2012, Vol. 63 ›› Issue (1): 279-285.DOI: 10.3969/j.issn.0438-1157.2012.01.039

• 能源和环境工程 • 上一篇    下一篇

CPAM的制备及其对环境激素DMP的去除

郑怀礼1,张鹏1,邓晓丽1,朱国成1,阳春1,范伟1,朱传俊2,杨志1   

  1. 1重庆大学三峡库区生态环境教育部重点实验室;2天津化工研究设计院
  • 收稿日期:2011-04-07 修回日期:2011-09-01 出版日期:2012-01-05 发布日期:2012-01-05
  • 通讯作者: 郑怀礼

Synthesis of CPAM and its usage for DMP removal

ZHENG Huaili1,ZHANG Peng1,DENG Xiaoli1,ZHU Guocheng1, YANG Chun1,FAN Wei1,ZHU Chuanjun2,YANG Zhi1   

  1. 1Key Laboratory of the Three Gorges Reservoir Region Eco-environment,Ministry of Education,Chongqing University;2Tianjin Chemical Research and Design Institute
  • Received:2011-04-07 Revised:2011-09-01 Online:2012-01-05 Published:2012-01-05

关键词: 混凝, 去除, 环境激素, 邻苯二甲酸二甲酯

Abstract: A preparation method for high molecular weight cationic polyacrylamide(CPAM) is reported in this paper.CPAM was prepared by using high purity industrial grade acrylamide with acryloyloxyethyltrimethyl ammonium chloride through aqueous copolymerization initiated by VA-O44.The initiator was added all at once and reaction temperature was increased stepwise to complete the polymerization gradually.The effects of reaction variables,such as temperature,reaction time,concentration of monomer and ratio of monomer on the molecular weight of product CPAM were investigated in detail.The optimum conditions were as follows: initial temperature 39℃,reaction time 5 h,monomer concentration 30% and monomer ratio of acrylamide(AM): acryloyloxyethyl trimethyl ammonium chloride(DAC) 2.3∶1.In addition,the maximum molecular weight of obtained product CPAM reached 10210000.The structure of product was characterized by FTIR.And the coagulation/flocculation process was carried out for treatment,of water containing dimethyl phthalate.The removal rate was compared with polymeric aluminum chloride(PAC),polymeric ferric sulfate(PFS),poly diallyl dimethyl ammonium chloride(PDMDAAC) and industry CPAM.During the coagulation/flocculation process,parameters,such as coagulant dosage,pH value,stirring time,and settling time were investigated.The results showed the organic coagulant PDMDAAC,industrial CPAM and self-made CPAM had better coagulation effects than inorganic coagulant PAC and PFS,and the self-made CPAM had the best coagulation effects,with an initial DMP concentration of 0.50 mg·L-1,the addition of a self-made CPAM dosage of 12.5 mg·L-1 and the best removal rate of DMP was 97.3%.

Key words: coagulation, removal, environmental endocrine, dimethyl phthalate

中图分类号: