Journal ArticleDOI
Water-Dispersible Magnetite-Reduced Graphene Oxide Composites for Arsenic Removal
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TLDR
The magnetite-graphene hybrids show a high binding capacity for As(III) and As(V), whose presence in the drinking water in wide areas of South Asia has been a huge problem.Abstract:
Magnetite−graphene hybrids have been synthesized via a chemical reaction with a magnetite particle size of ∼10 nm. The composites are superparamagnetic at room temperature and can be separated by an external magnetic field. As compared to bare magnetite particles, the hybrids show a high binding capacity for As(III) and As(V), whose presence in the drinking water in wide areas of South Asia has been a huge problem. Their high binding capacity is due to the increased adsorption sites in the M−RGO composite which occurs by reducing the aggregation of bare magnetite. Since the composites show near complete (over 99.9%) arsenic removal within 1 ppb, they are practically usable for arsenic separation from water.read more
Citations
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Selenium contamination, consequences and remediation techniques in water and soils: A review.
Yangzhuo He,Yujia Xiang,Yaoyu Zhou,Yuan Yang,Jiachao Zhang,Hongli Huang,Cui Shang,Lin Luo,Jun Gao,Lin Tang +9 more
TL;DR: Various treatment techniques for Se removal from water and soil are reviewed, and adsorption and membrane separation are seemed to be suitable on a commercial scale.
Journal ArticleDOI
Selective adsorption toward toxic metal ions results in selective response: electrochemical studies on a polypyrrole/reduced graphene oxide nanocomposite
TL;DR: Highly selective adsorption of a polypyrrole/reduced graphene oxide nanocomposite toward Hg(2+) results in electrochemically selective detection of HG(2+).
Journal ArticleDOI
Internal pore decoration with polydopamine nanoparticle on polymeric ultrafiltration membrane for enhanced heavy metal removal.
Xiaofeng Fang,Jiansheng Li,Xin Li,Shunlong Pan,Xuan Zhang,Xiuyun Sun,Jinyou Shen,Weiqing Han,Lianjun Wang +8 more
TL;DR: In this paper, a self-polymerized dopamine solution was penetrated through the polyethersulfone (PES) UF membrane from reverse direction by circulatory filtration, leading to the formation of a PDA nanoparticle coating around the walls of finger-like pores (labeled as PES/PDA-R).
Journal ArticleDOI
Comparative evaluation of magnetite-graphene oxide and magnetite-reduced graphene oxide composite for As(III) and As(V) removal.
TL;DR: In terms of the process energy consumption, energy saving could be achieved via omitting the reduction process to fabricate M-rGO from M-GO and the pre-oxidation process to convert As(III) to As(V).
Journal ArticleDOI
Adsorptive removal of ciprofloxacin by sodium alginate/graphene oxide composite beads from aqueous solution
TL;DR: Graphene oxide was encapsulated into environmentally benign sodium alginate to prepare a GO-SA composite hydrogel and an aerogel, which were then used as adsorbents to remove ciprofloxacin from aqueous solutions to show high tolerance to changes in pH and ionic strength.
References
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