Octopus tentacle-like molecular chains in magnetic flocculant enhances the removal of Cu(II) and malachite green in water
Octopus tentacle-like molecular chains in magnetic flocculant enhances the removal of Cu(II) and malachite green in water
复制标题
磁性絮凝剂中章鱼触手状分子链增强水中Cu(II)和孔雀石绿的去除
DOI：
10.1016/j.seppur.2021.120139
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发表时间：
2021-11
影响因子：
8.6
通讯作者：
Huaili Zheng
中科院分区：
文献类型：
--
作者：
Bingzhi Liu;Haitao Lu;Shenyu Wu;Zizeng Wang;Li Feng;Huaili Zheng
常规絮凝剂难以有效去除水中的溶解离子和有机物。本工作旨在研制一种具有章鱼触手状强吸附结构的环保型可再生核壳型絮凝剂（MCHS-g-P(AM-IA)）。有机壳水解成章鱼触手状的分子链，通过吸盘状官能团吸附溶解的离子/有机大分子，而磁芯则是絮凝体的生长中心。通过一系列表征方法对絮凝剂的结构和理化性能进行了分析。以Cu（II）和孔雀石绿（MG）分别作为重金属和有机污染物的模型，研究了MCHS-g-P（AM-IA）在单污染物系统和双污染物系统中对水污染物的去除能力。通过对絮凝体的ph依赖性、背景阳离子影响、絮凝动力学分析和SEM-EDS/XPS分析，深入研究了MCHS-g-P（AM-IA）的絮凝行为和机理。通过实际水基质中的絮凝性能和MCHS-g-P（AM-IA）的再生试验，评价絮凝剂在单级水处理中净化复杂废水的可行性。
Conventional flocculants are difficult to effectively remove dissolved ions and organic matter from water. This work aims to develop an environmentally friendly and renewable core–shell type flocculant (MCHS-g-P(AM-IA)) with octopus tentacle-like strong adsorption structure. The organic shell hydrolyses into molecular chains like octopus tentacles and adsorb dissolved ions/organic macromolecules through suckers-like functional groups, while the magnetic core acts as the growth center of flocs. Configuration and physical/chemical properties of the flocculant were analyzed by a series of characterization methods. Set Cu(II) and malachite green (MG) as models of heavy metal and organic pollutants separately, the removal capacity of MCHS-g-P(AM-IA) for water contaminants was studied in single-contaminant system and binary-contaminant system. The flocculation behavior and mechanism of MCHS-g-P(AM-IA) were deeply investigated by analysis of pH-dependence, background cationic influence and flocculation kinetics and SEM-EDS/XPS analysis of flocs. Furthermore, the flocculation performance in actual water matrix and regeneration tests of MCHS-g-P(AM-IA) were carried out to evaluate the applicable feasibility of flocculants for purification of complex wastewater in single stage water treatment.
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影响因子：
13.6
作者：
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通讯作者：
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影响因子：
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影响因子：
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作者：
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