Carrère Hélène, Sialve Bruno, Bernet Nicolas
INRA, UR50, Laboratoire de Biotechnologie de l'Environnement, Avenue des Etangs, Narbonne, F-11100, France.
Bioresour Technol. 2009 Aug;100(15):3690-4. doi: 10.1016/j.biortech.2009.01.015. Epub 2009 Feb 28.
Thermal (70-190 degrees C) and thermo-chemical (pH=10 and 12, 25 degrees C and 90-190 degrees C) treatments were investigated in order to maximise the production of methane from pig manure. Methane production from treated and raw manure was assessed from batch mesophilic biochemical methane potential tests. Methane potential of manure soluble fraction increased with the temperature of thermal treatments whereas temperatures higher than 135 degrees C were necessary to improve the methane potential of the total fraction. The best results were obtained with the highest temperature (190 degrees C). When thermo-chemical treatments were carried out at pH=12, both liquid phase and total fraction manure biodegradabilities were significantly decreased. Methane potential of manure total fraction was improved by treatments at pH=10 and temperatures ranging from 150 to 190 degrees C but biodegradability of liquid fraction was highly degraded, except for treatment at 190 degrees C. In both cases of thermal and thermo-chemical treatments at pH=10, the increase in manure biodegradability seemed to be linked to the reduction of the hemicellulosic like fraction.
为了使猪粪产生的甲烷产量最大化，研究了热（70 - 190摄氏度）和热化学（pH值为10和12，25摄氏度以及90 - 190摄氏度）处理方法。通过批次中温生化甲烷潜力测试评估了处理后的粪便和原粪便的甲烷产量。粪便可溶部分的甲烷潜力随热处理温度升高而增加，而总部分的甲烷潜力需要高于135摄氏度的温度才能提高。在最高温度（190摄氏度）下获得了最佳结果。当在pH = 12进行热化学处理时，液相和粪便总部分的生物降解性均显著降低。在pH = 10且温度范围为150至190摄氏度的处理提高了粪便总部分的甲烷潜力，但液相部分的生物降解性高度降解，190摄氏度处理除外。在pH = 10的热和热化学处理两种情况下，粪便生物降解性的增加似乎与类半纤维素部分的减少有关。
