Arsenic removal from water/wastewater using adsorbents—A critical review

http://hywr.kuciv.kyoto-u.ac.jp/lecture/gss/SBabel/E3-20130118PM/Hazardous%20material_2003.pdf

Low-cost adsorbents for heavy metals uptake from contaminated water: a review.

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.

Water-Dispersible Magnetite-Reduced Graphene Oxide Composites for Arsenic Removal

https://dr.ntu.edu.sg/bitstream/10356/96770/1/30.%20Application%20of%20Layered%20Double%20Hydroxides%20for%20Removal%20of%20Oxyanions.pdf

Jun Kun Wu

Papers

Adsorption of arsenite and arsenate within activated alumina grains: Equilibrium and kinetics