Modelling on the removal of Cr(VI) ions from aquatic system using mixed biosorbent (Pseudomonas stutzeri and acid treated Banyan tree bark)

In this research, a high resistant bacterium for chromium was cultured from effluent of a sustenance industrial process in the Vellore city, India. The resistant strain was observed to be Pseudomonas stutzeri after 16S rRNA gene sequencing. BLAST examination demonstrated the succession comparability about the bacterial isolate. Different MICs was seen against various antibiotics and numerous anti-microbial resistance of the isolated strain was resolved. Bioinformatics studies using I-TASSER showed the structure and folded nature of the predicted protein. Metal binding site was also determined using I-TASSER tool. FT-IR exhibited the alcoholic hydroxyl groups, amino, and amide groups attached with metal ion particles. The mixture of sulphuric acid treated Banyan tree bark and Pseudomonas stutzeri was utilized as a biosorbent for the elimination of Cr(VI) ions. The biosorption process was optimized to recover the maximum amount of Cr(VI) ions from the aquatic system. The adsorption kinetics was systemized using Pseudo-first order kinetic model. Adsorption equilibrium data was best exhibited the results for Freundlich model. Langmuir monolayer capacity was noted to be 27.47 mg/g. The present biosorbent showed excellent biosorbent potential for Cr(VI) ions and this material can be utilized for the treatment of industrial wastewater. (C) 2018 Elsevier B.V. All rights reserved.