Anaerobic co-digestion of cattle manure and alternative crops for the substitution of maize in South Europe.
Anaerobic co-digestion of cattle manure and alternative crops for the substitution of maize in South Europe.
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DOI：
10.1016/j.biortech.2014.09.005
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发表时间：
2014-11
影响因子：
11.4
通讯作者：
S. Kalamaras;T. Kotsopoulos
中科院分区：
文献类型：
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作者：
S. Kalamaras;T. Kotsopoulos
在这项研究中，对南欧地区替代农业基质作为玉米沼气生产的潜在替代品进行了调查。在与牛粪的厌氧共消化过程中，对刺菜蓟、玉米、水飞蓟和高粱等作物青贮饲料以及来自养牛场的垫草进行了检验。进一步研究了自然晒干形式的水飞蓟作物，并评估了机械、热和热化学预处理对纤维成分和甲烷产量的影响。用 NaOH 预处理可将溶解度提高 77.7%。共消化实验在 37°C 的 28 个间歇式反应器中进行。通过牛粪与刺菜蓟青贮饲料、用NaOH热化学预处理的水飞蓟茎和玉米青贮饲料的共同消化，分别获得了最高的甲烷产量，分别为308、271和267 L CH4kg−1挥发性固体。此外，垫料秸秆和牛粪的共同消化与玉米青贮饲料具有相似的甲烷产量。
In this study alternative agricultural substrates are investigated as potential substitutes of maize for biogas production in the region of South Europe. Crop silages of cardoon, maize, milk thistle and sorghum as well as bedding straw from cattle farm were examined in the anaerobic co-digestion procedure with cattle manure. Milk thistle crop was further investigated in a naturally sun dried form and the effect of mechanical, thermal and thermo-chemical pretreatments on fiber composition and methane yield was evaluated. Pretreatment with NaOH increase the solubilization by 77.7%. The co-digestion experiment was carried out in 28 batch reactors at 37 °C. The highest methane yields of 308, 271 and 267 L CH4kg−1of volatile solids were obtained by co-digestion of cattle manure with cardoon silage, thermo-chemical pretreated milk thistle stalks with NaOH and maize silage, respectively. Furthermore, co-digestion of bedding straw and cattle manure had similar methane yield with maize silage.