Co-digestion of manure with grass silage and pulp and paper mill sludge using nutrient additions

被引:5
作者
Hagelqvist, Alina [1 ]
Granstrom, Karin [2 ]
机构
[1] Cowi AB, Karlstad, Sweden
[2] Karlstad Univ, Dept Engn & Chem Sci, Karlstad, Sweden
关键词
Agricultural waste; anaerobic digestion; biomethane potential; co-digestion; ANAEROBIC-DIGESTION; ENERGY CROPS; MESOPHILIC CONDITIONS; METHANE PRODUCTION; BIOGAS PRODUCTION; AMMONIA INHIBITION; CATTLE MANURE; POTENTIAL BMP; SWINE MANURE; PIG MANURE;
D O I
10.1080/09593330.2016.1142000
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
There is an increasing worldwide demand for biogas. Anaerobic co-digestion involves the treatment of different substrates with the aim of improving the production of biogas and the stability of the process. This study evaluates how methane production is affected by the co-digestion of pig and dairy manure with grass silage and pulp and paper mill sludge and assesses whether methane production is affected by factors other than nutrient deficiency, low buffering capacity, inadequate dilution, and an insufficient activity and amount of microorganism culture. Anaerobic digestion was performed in batch reactors under mesophilic conditions for 20 days. The season of grass silage and manure collection proved to be an important factor affecting methane production. Spring grass silage produced a maximum of 250 mL/VSadded and spring manure 150 mL/VSadded, whereas autumn grass silage produced at most 140 ml/VSadded and autumn manure 45 mL/VSadded. The pulp mill sludge used is comprised of both primary and secondary sludge and produced at most 50 mL/VSadded regardless of season; this substrate benefitted most from co-digestion.
引用
收藏
页码:2113 / 2123
页数:11
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