Organic Matter Removal Kinetics and Sulfide Inhibition Pattern of Young Landfill Leachate Treatment
Young landfill leachate digestion was monitored for soluble organic matter removal and sulfide production in anaerobic batch reactors. COD removal kinetics and inborn sulfide inhibition pattern were determined according to extended Monod kinetics for product inhibition. The inhibition pattern suited noncompetitive inhibition model with a critical inhibitor concentration (Ki) of 850 mg S2-/L. Kinetic constants k and Ks were determined accordingly. Organic matter removal followed a second order reaction kinetics. The maximum dissolved sulfide production obtained was 450 mg S2-/L and COD removal proceeded at a range of 81-93% with a minimum level of 67-76% as a result of a drop in pH intensifying H2S toxicity. Organic loading rate was applied at values from 0.18 kg COD/m3.d to 0.5 kg COD/m3.d where increasing rates enhanced methanogenic activity and sulfide production was stabilized at a level of 100-130 mg S2-/L accordingly. Results showed that methanogenic activity ameliorated at higher OLRs indicating that they were also subject to competition for substrate as well as sulfide inhibition despite a high COD/SO4 ratio.
anaerobic digestion landfill leachate inhibition sulfide kinetics
Dilek ERDIRENCELEBI Izzet OZTURK
Selcuk University,Environmental Engineering Department,Konya 42031,Turkey Istanbul Technical University,Environmental Engineering Department,Maslak 34469,Istanbul,Turkey
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
2181-2185
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）