Treatment of aging leachate using bio-char derived from gaharu waste

The present work demonstrates the preparation of bio-char using gaharu waste for the treatment of aging leachate. The physical and chemical properties of gaharu bio-char were evaluated by pore structural analysis by BET analyzed. The effect of retention time, solution pH and adsorbent dosage on adsorption performance were examined. The absorption efficiency of the gaharu bio-char was determined by a series experiment using jar test. In this study, the parameter that evaluate the adsorption performance of leachate is turbidity, colour, total suspended solid, chemical oxygen demand and heavy metals. The BET surface area, Langmuir surface area and total pore volume were identified to be 1.073m²/g, 1.095m²/g and 1.246 cm³/g. The findings of optimum conditions is at pH 10 and dosage at range 1-2 gram of gaharu bio-char, according to the examination through variation effect at pH 5, 9, and 10 and gaharu bio-char dosage at 1g, 2g, 4g and 6g. For the heavy metal analysis, every variable were analyzed to study the adsorption uptake of metal ions from gaharu bio-char. The result shows the capabilities of the gaharu bio-char to adsorb metal ions depend on the variable parameter.