期刊
BIORESOURCE TECHNOLOGY
卷 168, 期 -, 页码 14-22出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.02.007
关键词
Anaerobic digestion; Biogas; Energy integration; Solid waste; Thermal hydrolysis
An economic assessment of thermal hydrolysis as a pretreatment to anaerobic digestion has been achieved to evaluate its implementation in full-scale plants. Six different solid wastes have been studied, among them municipal solid waste (MSW). Thermal hydrolysis has been tested with batch lab-scale tests, from which an energy and economic assessment of three scenarios is performed: with and without energy integration (recovering heat to produce steam in a cogeneration plant), finally including the digestate management costs. Thermal hydrolysis has lead to an increase of the methane productions (up to 50%) and kinetics parameters (even double). The study has determined that a proper energy integration design could lead to important economic savings (5(sic)/t) and thermal hydrolysis can enhance up to 40% the incomes of the digestion plant, even doubling them when digestate management costs are considered. In a full-scale MSW treatment plant (30,000 t/year), thermal hydrolysis would provide almost 0.5 M(sic)/year net benefits. (C) 2014 Elsevier Ltd. All rights reserved.
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