首页|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
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NSTL
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 floes. 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 floes. 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.
FlocculantMagnetic separationChitosanHeavy metal ionsDyes
Bingzhi Liu、Haitao Lu、Shenyu Wu
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School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
NSTL
