借鉴德国经验推动我国沼气工程发展

ttttt目的ttttt试验主要研究了3种真菌和2种酶处理对杂交狼尾草干式厌氧发酵产沼气的影响。ttttttttttttt方法ttttt分别采用不同用量糙皮侧耳培养液、长根菇培养液、香菇培养液、纤维素酶、漆酶对原料进行预处理，在中温(35 ℃)、总固体(total solid，TS)质量分数20%、总挥发物(volatile solide，VS)接种率20%、初始pH为7.0条件下，进行厌氧消化试验。ttttttttttttt结果ttttt采用真菌及酶处理均能有效提高系统产气率，3种真菌最优处理用量(按150 g原料算)分别为：糙皮侧耳培养液(100 mL)、长根菇培养液(100 mL)、香菇培养液(50 mL)；2种酶最优处理用量(按250 g混合物料算)分别为纤维素酶(100 mg)和漆酶(75 mg)。
上述5种处理条件下，系统产气量比无处理组分别提高了51.50%，38.97%，46.69%，40.61%，28.04%。ttttttttttttt结论ttttt整体而言，采用真菌进行原料预处理对环境条件的要求相对温和，有更好的应用前景。tttt

Effect of pretreatment and total solid content on thermophilic dry anaerobic digestion of Spartina alterniflora

tttttPurposetttttIn order to study the effect of biological treatment on dry anaerobic digestion of hybrid pennisetum (Pennisetum americanum×P. purpureum).ttttttttttttttttttMethodtttttTwo enzymes and the fermentation broth of three fungus, Lentinus edodes, Pleurotus ostreatus, and Oudemansiella radicata, were used for material treatment, and the anaerobic digestion was carried out at 35 ℃, with mass proportion of total solid (TS) being 20%, vaccination being 20% and the original pH being 7.0.ttttttttttttttttttResultstttttThe biological treatment could efficiently improve the biogas yield. The optimum treating volumes of the three fungus’ broth (according to 150 g material) were 100, 100, and 50 mL, respectively with biogas yield increases being 51.50%, 38.
97%, and 46.69%. And the optimum treating amounts (according to 250 g feedstock) were 100 and 75 mg respectively with biogas yield increases being 40.61% and 28.04%.tttttttttttttConclusiontttttOverall, treating material with fungus requires more moderate condition and has a better application prospect.tttt