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Methane Production By Anaerobic Co-Digestion Of Sewage Sludge And Wheat Straw Under Mesophilic Conditions

Journal: International Journal of Scientific & Technology Research (Vol.4, No. 6)

Publication Date:

Authors : ; ; ; ;

Page : 1-6

Keywords : Index Terms Anaerobic co-digestion; CN ratio; Primary sludge; Methane potential; Wheat straw.;

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Abstract

Abstract This study investigated the possibilities of improving methane yield production from the anaerobic co-digestion of wheat straw WS and primary sludge PS. The batch experiment was conducted under mesophilic conditions. Different mixtures of WS and PS depending on its CN ratio were carried out to investigate the optimum CN ratio for effective methane production. The cumulative methane yields CMYs for co-digestion of PS with WS at CN ratios of 35 25 20 15 and 10 were 1.29 1.62 1.33 2.44 and 2.16 time than digesting PS alone respectively. The maximum CMYS was observed at CN ratio of 15 with an increase of 89 50.93 83.61 and 13.12 compared with the other CN ratio of 35 25 20 and 10 respectively. This result showed the positive synergy of co-digesting of PS and WS for methane production caused by improving the CN ratio of the feed stock.

Last modified: 2015-11-13 18:30:49