Publication: Effect on Ca(OH)2 pretreatment to enhance biogas production of organic food waste
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Date
2016
Authors
Junoh H.
Yip C.H.
Kumaran P.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Physics Publishing
Abstract
This study investigated the effect of calcium hydroxide, Ca(OH)2 pretreatment in optimizing COD solubilisation and methane production through anaerobic digestion process. Two different parameters, chemical concentration (40-190 mEq/L) and pretreatment time (1-6 hours) were used to pretreat food waste. A central composite design and response surface methodology (RSM) was applied in obtaining the optimized condition for COD solubilisation. Result showed COD solubilisation was optimized at 166.98 mEq/L (equivalent to 6.1 g Ca(OH)2/L) for 1 hour. These conditions were applied through biomethane potential test with methane production of 864.19 mL/g VSdestructed and an increase of 20.0% as compared to untreated food waste.
Description
Calcium; Methane; Solubility; Anaerobic digestion process; Biomethane potential (BMP); Central composite designs; Chemical concentrations; COD solubilisation; Methane production; Optimized conditions; Response surface methodology; Anaerobic digestion; anoxic conditions; biogas; chemical oxygen demand; concentration (composition); design; digestibility; food; lime; methane; optimization; organic matter; solid waste; solubilization