高校化学工程学报2017，Vol.31Issue(2)：463-469,7.DOI:10.3969/j.issn.1003-9015.2017.02.028
两性絮凝剂EPPCX的制备及对Pb2+作用机理研究
Preparation of an Amphoteric Polymer Flocculant EPPCX and its Pb2+Removal Mechanism
摘要
Abstract
Cationic polyamide xanthogenate (EPPCX) as an amphoteric flocculant was prepared with polyaminamide-2,3-epoxypropyltrimethl ammonium chloride copolymer, carbon disulfide and sodium hydroxide in ethanol. The chemical structure of the product was characterized by infrared spectroscopy, nuclear magnetic resonance and ultravoilet spectroscopy. Effects of EPPCX dosage, temperature and anion on Pb2+ removal from wastewater were investigated. Meanwhile, zeta potential of flocs was determined, and the flocs were investigated by scanning electron microscopy. The result shows that Pb2+ removal is 97.2% when the EPPCX dosage is 110.75 mg·L-1. The maximum Pb2+ removal is achieved at 35℃, which can be promoted by anions. Zeta potential results indicate that flocculation is controlled by charge neutralization. Fractal dimension shows the highest value under optimal flocculant dosage conditions, which indicates that the flocs have compact aggregated structure. The flocs morphology show leveled accumulation structure which further confirms the results.关键词
两性絮凝剂/螯合/去除率/分形维数Key words
amphoteric flocculant/chelate/removal rate/fractal dimension分类
资源环境引用本文复制引用
郭睿,王超,李晓芳,甄建斌,程敏..两性絮凝剂EPPCX的制备及对Pb2+作用机理研究[J].高校化学工程学报,2017,31(2):463-469,7.基金项目
陕西省科技统筹创新工程计划项目(2014KTCL01-11) （2014KTCL01-11）
陕西省科学技术研究发展项目(2013K11-19). （2013K11-19）
