| Literature DB >> 29294458 |
Sameena Begum1, Gangagni Rao Anupoju2, S Sridhar3, Suresh K Bhargava4, Veeriah Jegatheesan5, Nicky Eshtiaghi5.
Abstract
This work aims to evaluate the impact of pH and initial organic load (IOL) in terms of Chemical Oxygen Demand (COD) of landfill leachate for the production of value added products during single and two stage anaerobic digestion (AD). It was observed that at an optimal IOL of 48 g/L, acetic acid was dominant at pH 5.5 whereas it was butyric acid at pH of 5.5-6.0 and 10-11. The yield of Volatile Fatty Acids (VFA) was dependent on IOL and it was in the range of 0.26 to 0.36 g VFA/(g COD removed). Methane was also harvested during single and two stage AD and found that it was varying in the range of 0.21-0.34 L CH4/(g COD removed) and 0.2-0.32 L CH4/(g COD removed) respectively. An overall increase of 21% COD removal was noticed in two stage AD in comparison to single stage.Entities:
Keywords: Anaerobic digestion; Leachate; Methane; Organic loading; Volatile fatty acids
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Year: 2017 PMID： 29294458 DOI： 10.1016/j.biortech.2017.12.069
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642