期刊
BIORESOURCE TECHNOLOGY
卷 154, 期 -, 页码 74-79出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.11.096
关键词
Ultrasound; Anaerobic co-digestion; Cattle manure; Sewage sludge; Food waste
资金
- Spanish Ministry for the Environment, Rural and Maritime Affairs [200800050084725]
- Principality of Asturias Plan for Science, Technology and Innovation
This paper presents a study of the effect of applying ultrasound pre-treatment in the production of methane when co-digesting mixtures of cattle manure with food waste and sludge. A series of experiments were carried out under mesophilic and thermophilic conditions in continuously stirred-tank reactors containing 70% cattle manure, 20% food waste and 10% sewage sludge. Ultrasound pre-treatment allows operating at lower HRT, achieving higher volumetric methane yields: 0.85 L CH4/L day at 36 degrees C and 0.82 CH4/L day at 55 degrees C, when cattle manure and sewage sludge were sonicated. With respect to the non-sonicated waste, these values represent increases of up to 31% and 67% for mesophilic and thermophilic digestion, respectively. (C) 2014 Published by Elsevier Ltd.
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