6种农林剩余物化学成分及沼气高温发酵效果  

Biogas production from 6 kinds of agricultural residues by thermophilic fermentation

作　　者：林满红[1] 肖正[2,3] 赵超[1] 胡荣康[1] 赵慧[1] 刘斌[1,3] 

机构地区：[1]福建农林大学食品科学学院,福建福州350002 [2]福建农林大学生命科学学院,福建福州350002 [3]国家菌草工程技术研究中心,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2017年第2期206-210,共5页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：国家自然科学基金(31370146);国家科技支撑计划子课题(2014BAD15B01-6);福建省菌草生态产业协同创新攻关课题(K80ND800212);福建农林大学科技发展基金(KF2015052;KF2015053)

摘　　要：本试验研究了6种农林剩余物(茶树菇菌糠、银耳菌糠、杏鲍菇菌糠、甘蔗渣、笋头和菇头)的主要成分差异及高温发酵(55℃)制备沼气的效果.结果表明:除菇头外,5种农林剩余物木质纤维素含量均高于主要营养成分.6种农林剩余物的碳氮比差别较大,最低的是菇头(7.3),最高的是甘蔗渣(106.7).不同剩余物的积累产沼气量和产甲烷量差别很大.产气效果最好的是菇头,15 d积累产沼气量为485.1 m L·g^(-1),甲烷浓度为53.5%.To investigate the feasibility of fermentating agricultural residues for biogas usage,chemical compositions of 6 kinds of agricultural residues,including Agrocybe cylindracea,Tremella fuciformis,Pleurotus eryngii,sugarcane bagasse,bamboo shoot head and mushroom head,and yield and efficacy of thermophilic fermentation at 55 ℃ were studied. The results showed that essential nutrients,including total sugar,crude protein and crude fat,were lower than lignocellulose for 5 kinds of residues except for mushroom head. Carbon and nitrogen ratio differed among species,with the lowest value being 7.3 from mushroom head and the highest value being 106.7 from sugarcane bagasse. Moreover,biogas accumulation and methane concentration varied greatly. The highest biogas production was from mushroom head at 485.1 m L·g^-1 for 15 d,with methane concentration being 53.5%.

关 键 词：农林剩余物 高温发酵 沼气 

分 类 号：S216.4[农业科学—农业机械化工程]