Effective removal of Direct Orange 26 dye using copper nanoparticles synthesized from Tilapia fish scales

Abstract

The performed work reports the manipulation of a collective local surplus solid (fish scales of tilapia) for the synthesis of copper nanoparticles. Copper nanoparticles were synthesized using tilapia fish scales and were characterized using SEM and XRD. The synthesized copper nanoparticles were used for the remediation of direct orange 26 dye. The maximum remediation (90.2%) was noted at 0.01 g/L concentration of dye, 0.001 g/L of Cu-NPs, pH 8, at 40 ºC. The value of TSS for untreated and treated solutions was found to be 0.447 mg/L and 0.40 mg/L, respectively. Similarly, the value of TDS for the untreated solution was found to be 22.35 mg/L while for the treated solution it was 20 mg/L. The percent reduction in COD and TOC were 84.54% and 86.76%, respectively. All data was analyzed statistically. The current study inferred that copper nanoparticles using a tilapia fish scale which is a bio-waste material could be successively used for the detoxification of other toxic dyes as well.