Response Surface Modelling on Biosorptive Removal of As(V) by Neem Bark Powder: A Central Composite Design Approach

IJEP 43(1): 22-30 : Vol. 43 Issue. 1 (January 2023)

Palas Roy*

B.N. Mahavidyalaya, Department of Chemistry, Itachuna, Hooghly, West Bengal–712 147, India

Abstract

It is imperative to remove arsenic from aquatic environments because of the dangers it poses to human health, which has made arsenic contamination an international issue. Arsenic ions may be removed from water using finely powdered (250 microns) NBP as a low–cost biosorbent in a column biosorption investigation described in this publication. As(V) concentrations ranged from 600.0-3600.0 µg/L, flow rates ranged from 2.0-6.0 mL/min and biosorbent doses ranged from 2.0-10.0 g, were used in a central composite design (CCD) in RSM to investigate the impact on the breakthrough time for the optimization of the arsenic biosorption process. Analysis of variance (ANOVA) confirmed the quadratic model’s significance and appropriateness. Bar plots optimised results showed that NBP was an effective and economically practical biosorbent, while desorption studies showed the biosorbent’s reusability for the removal of As(V) from aqueous system.

Keywords

Arsenic, Biosorption, Removal, Response surface methodology, Central composite design

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