Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7081452 | Bioresource Technology | 2013 | 6 Pages |
Abstract
Sulfide (S2â) and nitric oxide (NO) can be formed in anaerobic digester if nitrate and sulfate were presented in the influent streams. This study noted by 4,5-diaminofluorescein diacetate (DAF-2DA) staining and confocal laser scanning microscopy (CLSM) the presence of nitrososulfides (SNO) complex in the S2â + NO-amended methanogenic sludge. Kinetic analysis suggested two-step kinetics involving chemical equilibrium between S2â, NO and SNO as step 1 and the slow conversion from SNO to N2O as step 2. The SNO complex was claimed to have higher inhibition effect than S2â or NO alone on the methangenic activities. Comments were made on the role of SNO complex for the interactions between sulfur, nitrogen and carbon metabolisms in anaerobic digestion.
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Authors
Duu-Jong Lee, Biing-Teo Wong,