通过添加固体粪便部分提高液体奶牛粪便的生物甲烷潜力。
Enhancing the biomethane potential of liquid dairy cow manure by addition of solid manure fractions.
作者信息
Díaz Israel, Figueroa-González Ivonne, Miguel José Ángel, Bonilla-Morte Luis, Quijano Guillermo
机构信息
Department of Chemical Engineering and Environmental Technology, University of Valladolid, Valladolid, Spain.
Agrarian Engineering School, University of Valladolid-Soria Campus, C/Universidad s/n, 42004, Soria, Spain.
出版信息
Biotechnol Lett. 2016 Dec;38(12):2097-2102. doi: 10.1007/s10529-016-2198-9. Epub 2016 Aug 29.
OBJECTIVES
To assess the effect of adding solid manure fractions on the biomethane potential (BMP) of liquid dairy cow manure and on the biokinetic parameters of the process.
RESULTS
The methanogenic potential of liquid dairy cow manure was strongly effected by adding a solid manure fraction. The 90/10 % (w/w) liquid/solid manure fraction mixture was the best substrate for CH production. This substrate mixture improved by 50 % the final CH production per g substrate and decreased the lag time by 220 % relative to the reference BMP test without the addition. Moreover, the addition of 20 % solid manure fraction adversely affected both the final CH production and the maximum methane production rate, while increased the lag time by 400 % compared to the reference BMP test without addition.
CONCLUSIONS
Liquid dairy cow manure should be supplemented with no more than 10 % of solid manure fraction in order to improve the biomethane potential of this important agro-industrial residue.
目的
评估添加固体粪肥组分对奶牛液体粪便的生物甲烷潜力（BMP）以及该过程生物动力学参数的影响。
结果
添加固体粪肥组分对奶牛液体粪便的产甲烷潜力有显著影响。90/10%（w/w）的液体/固体粪肥组分混合物是产生CH的最佳底物。相对于未添加的参考BMP试验，该底物混合物使每克底物的最终CH产量提高了50%，并使延迟期缩短了220%。此外，添加20%的固体粪肥组分对最终CH产量和最大甲烷产生速率均产生不利影响，与未添加的参考BMP试验相比，延迟期增加了400%。
结论
为提高这种重要农业工业残留物的生物甲烷潜力，奶牛液体粪便中固体粪肥组分的添加量不应超过10%。
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