The COD Removal of Lime and Subsequent Acid Pretreated Partially Stabilised Leachate via Granular-Activated Carbon

• Main Authors: Lennevey, Kinidi, Shanti Faridah, Salleh
• Format: Article
• Language: English
• Published: Hindawi Publishing 2020
• Subjects: TP Chemical technology
• Online Access: http://ir.unimas.my/id/eprint/46370/1/International%20Journal%20of%20Chemical%20Engineering%20-%202020%20-%20Kinidi%20-%20The%20COD%20Removal%20of%20Lime%20and%20Subsequent%20Acid%20Pretreated.pdf; http://ir.unimas.my/id/eprint/46370/; https://onlinelibrary.wiley.com/doi/10.1155/2020/3687165; https://doi.org/10.1155/2020/3687165

+is paper investigated the effectiveness of lime treatment and subsequent acid precipitation (using H2SO4) as a pretreatment of partially stabilised leachate. +is study obtained high removal efficiencies (>70%) from the lime and acid pretreated partially stabilised leachate. +e treatment of this wastewater with 10 g/L dosage of optimum lime (pH 12) at 25°C had led to the 41% COD elimination in the initial stages of pretreatment. Subsequent pH adjustment using 1 N sulfuric acid and granular-activated carbon adsorption in general revealed more than 92% removal of the 4 g/L of carbon dosage. +erefore, the results revealed that the adsorption of COD on the GAC stemmed from the kinetics rate of the pseudo-second-order.