Removal Efficacy of Reactive Textile Dyes by Cellulose Powder from Rice Straw

Abstract

In this research, Cellulose powder was prepared by bleaching rice straw with 10% w/v H₂O₂ (CPR) to removal 3 reactive dyes (Blue G, Red SBN and Yellow RN). The optimum conditions for the dye adsorption were investigated including an adsorbent dosage, the concentration of 3 reactive dyes solution, the contact time and adsorption of mixed 3 dye solution. The adsorption isotherm and kinetics. It was found that the amount of CPR of 2.5 g contact time at 60 min the adsorption capacity of 3 reactive dyes the removal percentages were 91.37±0.20, 92.27±0.00 and 97.20±0.73 respectively. At the concentration of 3 reactive dyes solution 15 mg/L. In 15 mg/L adsorption of mixed 3 dyes solution, the color value after the adsorption was lower than 300 ADMI (standard value of wastewater industry). The Pseudo-Second Order model was applied for fitting experimental data of 3 dyes adsorption by CPR. The adsorption mechanism was consistent with Langmuir isotherm. Therefore, CPR could be used as alternative bio-adsorbent for reactive dyes removal in native textile dyes wastewater.