Scilight Press

In this study, the parameters for the adsorption of sulfur black dye onto ZnO and ZnO-ME nanoparticles were optimized in a batch system (ZnO-nanomaterials synthesized using bacterial extracts and ZnOME-nanomaterials synthesized using bacterial cell mass). For estimating the significant and interaction effects of several investigated factors (initial concentration of sulphur black dye, adsorbent dose and contact time) on the adsorption process, the Taguchi optimization approach (an L9 array design) was used. It was discovered that 15 mg of adsorbent, 55 mg/l of initial dye concentration and 2 h of contact time at pH 7 and room temperature were the optimum conditions. Using the analysis of variance (ANOVA) method, the percentage contribution of each process parameter to the removal of sulphur black dye was estimated. It was discovered that Taguchi predicted well results. It was discovered that the percentage removal of the sulphur black dye obtained in the confirmatory experiments conducted under optimized conditions was higher than that optimized in each of the Taguchi design’s test runs, supporting the accuracy of the process parameter optimized under the specified experimental conditions.