Journal
BIORESOURCE TECHNOLOGY
Volume 251, Issue -, Pages 364-373Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.12.069
Keywords
Leachate; Anaerobic digestion; Organic loading; Volatile fatty acids; Methane
Funding
- Council of Scientific and Industrial Research (CSIR) -Indian Institute of Chemical Technology (IICT), India
- Royal Melbourne Institute of Technology (RMIT), Melbourne, Australia
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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.
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