Mesophilic anaerobic co-digestion of cheese whey with cow manure in batch reactor

ENP Engineering Science Journal

article

Nassima Tirichine¹  Meryem Saber¹  Mohamed Khitous¹  Hakim Lounici²  Rabah Bouarab³ 

[1] Centre de Développement des Energies Renouvelables;Centre Universitaire de Bouira;Ecole Nationale Polytechnique

关键词: Cheese whey;    anaerobic co-digestion;    pH control;    cow manure;    biogas.;   

DOI  :  10.53907/enpesj.v2i2.171

学科分类：社会科学、人文和艺术（综合）

来源: Ecole Nationale Polytechnique

【 摘 要 】

Anaerobic digestion is a biological process that takes place under very strict operating conditions, including apH close to neutrality. This experimental work aims to study the effect of pH control on CH4 production in mesophilicanaerobic co-digestion of cheese whey with cow manure. Two experiments were conducted in batch reactor, the firstwithout pH adjustment and the second with pH adjustment. The results of the first co-digestion revealed an inhibition ofthe methanization process by acidification of the medium and accumulation of volatile fatty acids; whereas during thesecond co-digestion with pH adjustment using sodium bicarbonate (1M), the process was improved with methane levels(> 50%) in the biogas. The accumulated biogas volume was two times higher for the same operating time in the digester.

【 授权许可】

CC BY-NC-SA