Journal
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
Volume 39, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colcom.2020.100319
Keywords
Arsenic removal; Dye removal; Adsorption efficiency; Multifunctional adsorbent
Funding
- National Bioscience award, Department of Biotechnology, Govt. of India [102/IFD/SAN/5142/2018-19]
- UGC-DAE-CSR, Mumbai Centre, India [UDCSR/MUM/AO/CSR-M-249/2017]
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The removal of Arsenic from drinking water and dye from industrial wastewater using a single composite system is the aim of current work. We develop a composite of reduced graphene oxide (rGO) and magnetite nano particles in 1:1 ratio named as IO@rGO. IO@rGO shows removal efficiency of Arsenic(V) up-to 96% for contact time 120 min at pH 7. For dye removal, we perform adsorption study of IO@rGO with three anionic dyes: Methyl Blue, Orange G (OG) and Alizarine Cyanine Green (AG). The removal efficiency for Methyl Blue at pH 7 is shown 91% in 11 min. Moreover, IO@rGO shows removal efficiency of OG up-to 71% at pH 3 for 90 min and for AG solution up-to 70% at pH 7 at 150 min following pseudo second order kinetics. Further being magnetic, after adsorption of Arsenic or Dye both adsorbent and adsorbate can be easily separated from solution by an external magnet.
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