期刊
WASTE MANAGEMENT
卷 35, 期 -, 页码 105-110出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2014.09.011
关键词
Rapeseed; Hydrolysis constants; Agricultural biogas plats; Anaerobic Digestion Model No. 1; Animal faeces
资金
- project Development of the potential and educational offer of the University of Wroclaw - the chance to enhance the competitiveness of the University [POKL.04.01.01-00-054/10]
- key project The model agro-energetic complexes as an example of distracted cogeneration based on local and renewable energy sources [POIG.01.01.02-00-016/08]
- Wroclaw Centre of Biotechnology, programme
Rape oilcake is a by-product formed after the removal of oil from rapeseed. Due to the high content of organic matter rape oilcake seems a good substrate for anaerobic digestion when it cannot be used as fodder. The aim of this work was to optimise the parameters used in a mathematical model of anaerobic digestion for rapeseed oilcake and cattle manure. The composition of these substrates was determined in order to estimate model inputs. Optimised kinetic constants of hydrolysis and decomposition for oilcake (K-dis = 0.77, K-hydCH = 0.55,,k(hydPr) = 0.57, k(hydLi) = 0.30) were estimated based on batch fermentation. The accuracy of the model with improved input parameters was confirmed by continuous fermentation. The average concentration of methane in biogas was about 50%. The biogas production efficiency from organic matter (defined as volatile solids) was 0.42 m(3) kg(-1) with an organic substrate loading rate equal to 3.18 kg m(-3) d(-1). The fermentation process demonstrated good stability and efficiency. The accuracy of the optimised model seems sufficient for use in modelling of a full scale process. (C) 2014 Published by Elsevier Ltd.
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