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

被引：1
|
作者：
Kinidi, Lennevey [1 ]
Salleh, Shanti Faridah [1 ]
机构：
[1] Univ Malaysia Sarawak, Fac Engn, Dept Chem Engn & Energy Sustainabil, Kota Samarahan 94300, Sarawak, Malaysia
来源：
INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING | 2020年 / 2020卷 / 2020期
关键词：
HUMIC-ACID; ADSORPTION; COAGULATION;
D O I：
10.1155/2020/3687165
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Background. This paper investigated the effectiveness of lime treatment and subsequent acid precipitation (using H2SO4) as a pretreatment of partially stabilised leachate. This study obtained high removal efficiencies (>70%) from the lime and acid pretreated partially stabilised leachate. The treatment of this wastewater with 10 g/L dosage of optimum lime (pH 12) at 25 degrees 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. Therefore, the results revealed that the adsorption of COD on the GAC stemmed from the kinetics rate of the pseudo-second-order.
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页数：9
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