Nickel Oxide Nanoparticles Application as an Efficient Adsorbent for Dye Removal from Synthetic Wastewater Treatment

In this study, adsorbentn process performance was assessed using nickel oxide nanoparticles for wastewater treatment containing mono azo Orange II dye in a laboratory scale.

The effects of various factors such as adsorbent dosage, contact time, pH and initial dye concentration were investigated.

Based on the obtained results, the optimum pH range to dye removal is acidic pH and under these conditions, complete removal of the 50 mg/L dye can be achieved by using 0.6 g/L of nickel oxide. This concentration of nickel oxide was determined as the optimum concentration. Although increasing dye concentration caused a decrease in the efficiency process, but a considerable efficiency was obtained in 100 mg/L dye concentration.

The data showed that the nickel oxide nanoparticles could be used as an efficient adsorbent for the decolorization of azo dyes.