Synthesis of Go-Coated MnFe2O4 Nanomaterials and the Effectiveness Study of Arsenic Elimination from the Solution

Demand for fresh water is increasing day by day, with increase in industrial development and population worldwide. Degradation of water quality and contamination of water will rise in the next couple of decades with this development activity. However, various collective methods were established to reduce water contamination. Among them, adsorption is the process that is gaining attention for research to remove heavy metals from solution. Various nanoadsorbents were prepared and examined to make the removal process convenient, effective and inexpensive. The present study covers the Graphene oxide (GO), Manganese ferrite (MnFe2O4) and Graphene oxide-coated Manganese ferrite (GO-MnFe2O4) nanoadsorbent synthesis procedure and arsenic adsorption efficacy of the materials. This experiment shows efficacy of arsenic elimination from solution strength 0.2 mg/lit by prepared nanomaterials at pH of 7 in room temperature for 15 min contact by using 0.4 gm/lit adsorbents. Results obtained for arsenic removal efficiency of adsorbents are about 20% by GO, 79% by MnFe2O4 and 85% by GO-MnFe2O4. But this arsenic adsorption efficiency increased if pre-oxidation is done with enhancing contact time. With pre oxidation at pH 7 for contact time 22 h, this efficiency increased up to 40% by using GO, 96% by using MnFe2O4 and 97% by using GO-MnFe2O4 using adsorbent 0.4 gm/lit. Founded on lab result, it can be stated that GO-MnFe2O4 is an efficient nanoadsorbent for adsorption of arsenic. Further study is required for field application of these materials.