STUDIES ON REMOVAL OF METANIL YELLOW DYE FROM WASTEWATER USING COCONUT SHELL POWDER AND OPTIMIZATION USING CENTRAL COMPOSITE DESIGN
Abstract
The research investigated the removal of Metanil Yellow dye from wastewater using a low-cost, eco-friendly biosorbent-coconut shell powder. This biosorbent is widely available, economical, and effective. A dosage of 20 g/L with a 53 µm particle size removed 91% of the dye. The optimal contact time was 40 minutes for treating 20 mg/L dye in 50 mL solution. Biosorption efficiency decreased with larger particle sizes but increased with higher adsorbent doses. Removal was most efficient at pH 2, with efficiency decreasing as pH rose toward 8.
Keywords:
Biosorption, pH, time, RSM, Dosage and TemperatureDOI
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