Utilization of Bottom Ash as an Adsorbent for Color and COD Removal for Textile Industry Waste

This study investigates the use of bottom ash as an adsorbent with and without chemical activation treatment. also determines effect pH stirring speed on efficiency in adsorption color COD. Bottom was ground sieved by 100 mesh sieves activated hydrochloric acid 2%. The experiments were conducted at variations 6, 8, 10; contact time 30, 60, 90 minutes; speeds 30 60 rpm. most effective non-activated adsorbents occurred combination six rpm removal for 66.30% a minutes COD 31.55% minutes. While adsorbent, highest (77.44%) (40.54%) rpm, potentially used treating wastewater containing high concentrations