Authors: Jianzhang Sun Baoyu Gao Shuang Zhao Ruihua Li Qinyan Yue Yan Wang Siqi Liu
Publish Date: 2016/06/28
Volume: 24, Issue: 6, Pages: 5179-5188
Abstract
It is confirmed that nanoZnO nZnO has impact on environment and is considered as heavy metal pollutants It is a new technology that applies coagulation process to simultaneous removal of the nanoparticles and heavy metals Environmental chemical behavior of ZnO in water such as the dispersion aggregation sedimentation and dissolution of releasing metal ions has been systematically studied in this paper The result shows that three kinds of nZnO state such as compacted sediment suspended and released is separately 3654 4061 and 2286 Enteromorpha polysaccharide Ep was used together with polyaluminum chloride PAC in surface water purification In order to study the mechanism of simultaneous removal of residual nZnO particles and Zn2+ coagulation process was further applied in this study The evolution of flocs size strength and recovery ability and fractal structure due to Ep addition was systematically studied in this paper Results indicated that PACEp was efficient in removing nZnO and Zn2+ which leads to more than 95 particles 50–60 natural organic matter NOM removed and 35 of resolved heavy metal ion adsorbingchelation Ep was an efficient coagulant aid in enhancing performance of coagulation and generating flocs with bigger sizes faster growth rates and higher recovery abilities Additionally the flocs formed by PACEp presented a much looser structure than flocs formed only by PAC
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