Removal of Crystal Violet, Methyl Orange, Methylene Blue and Rhodamine B by Nanocomposite Containing Endophytic-Mediated AgNP

Application of nanotechnology has been incorporated with polymers to develop frame work for the remediation of industrial waste water. In this study silver nanoparticles (AgNP) were synthesized by isolated endophytic bacterial strain Pseudomonas hibiscicola. The synthesized silver nanoparticles were characterised by XRD, HR-TEM, EDX and FTIR analysis. After XRD and HR-TEM analysis the average size of synthesized AgNP was calculated as 6.65 nm and 7.25 nm, respectively. Cellulose Acetate Butyrate (CAB) nanocomposites were synthesised by using phase inversion technology with Dimethyl sulfoxide (DMSO) as polar solvent. The surface characteristics of nanocomposite (CAB with 20 mg silver nanoparticles) was studied by using AFM and FE-SEM. The pore size, distribution of pores and mechanical strength of nanocomposite (CAB with 20 mg silver nanoparticles) was maximum. Nanocomposite (CAB with 20 mg AgNP) selected for the removal of 20 mg/L Crystal Violet (CV), Methyl Orange (MO), Methylene Blue (MB) and Rhodamine B (RB) dyes by using Monolayer fixed bed filtration assembly. The dye removal efficiency of CV, MO, MB and RH was measured by using UV visible spectrophotometer as 82.1, 86.2, 87.8 and 82.6% respectively. In RSM (response surface methodology), Design Expert free software was used to optimize the dyes removal process. The optimum temperature and pH for dye removal was 35 °C and 7.5 respectively. ANOVA was performed to determine the adequacy and significance of Design expert model. The proposed method was simple, quick, eco-friendly and effective with good removal efficiency of different dyes after three rounds of application by using Nanocomposite.