文献类型：期刊文献

中文题名：碱性H_(2)O_(2)预处理杨木厌氧发酵产甲烷特性研究

英文题名：Characteristics of Methane Production From Anaerobic Fermentation of Poplar Pretreated With Alkaline H_(2)O_(2)

作者：姜越[1,2] 张宁[1,2] 蒋剑春[1,2]

第一作者：姜越

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏南京210042;[2]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037

年份：2025

卷号：45

期号：1

起止页码：23-29

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：;北大核心:【北大核心2023】；

基金：国家重点研发计划资助项目(2023YFD2201603)。

语种：中文

中文关键词：杨木;碱性过氧化氢;甲烷;厌氧发酵;微生物群落结构

外文关键词：poplar;alkaline hydrogen peroxide;methane;anaerobic fermentation;microbial community structure

分类号：TQ35

摘要：以杨木为原料,研究了碱性H_(2)O_(2)预处理对杨木厌氧发酵产甲烷及菌群结构的影响。结果表明:经碱性H_(2)O_(2)预处理后,杨木物料pH值呈中性,无需洗涤可直接投入后续高固含量厌氧发酵体系,既节水又减少排放污染,是一种绿色高效、环境友好的预处理方法。碱性H_(2)O_(2)预处理促进了杨木中木质素的脱除以及纤维素的保留,其中1.0%NaOH/1.0%H_(2)O_(2)对杨木预处理效果最佳,该处理组厌氧发酵7 d,甲烷产量为125.5 mL/g,厌氧发酵至20 d时,甲烷产量达到240 mL/g。最高产甲烷速率出现在第1天,为46.1 mL/(d·g)。碱性H_(2)O_(2)预处理减少了代谢微生物菌群的竞争,促进了厚壁菌门、拟杆菌门、梭状芽孢杆菌纲、拟杆菌纲、甲烷八叠球菌属等有利于产甲烷的优势菌的生长。
Effects of alkaline H_(2)O_(2)pretreatment on the anaerobic fermentation of poplar for methane production and microbial community structure were investigated using poplar as raw material.The results showed that after alkaline H_(2)O_(2)pretreatment,the pH value of poplar material became neutral,and they could be directly put into the subsequent anaerobic fermentation system with high solid content without washing.The pretreatment method was green,efficient and environmentally friendly,which not only saved water but also reduced emissions pollution.Alkaline H_(2)O_(2)pretreatment promoted the lignin removal and cellulose retention in poplar.Among them,1.0%NaOH/1.0%H_(2)O_(2)had the most positive effect on poplar,with a methane yield of 125.5 mL/g for 7 days of anaerobic fermentation.When the anaerobic fermentation reached 20 days,the methane yield reached 240 mL/d.The maximum methane production rate occurs on the first day,was 46.1 mL/(d·g).Alkaline H_(2)O_(2)pretreatment reduced the competition of metabolic microbial flora and promoted the growth of dominant methane-producing bacteria such as Firmicutes,Bacteroidetes,Clostridia,Bacteroidia and Methanosarcina.