酸、碱预处理对泥炭产甲烷影响  

Effect of acid and alkali pretreatment on methane production from peat

作　　者：王颖 郝思雯 马力通[1,2] 王再瑶 WANG Ying;HAO Siwen;MA Litong;WANG Zaiyao(School of Chemistry and Chemical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;Inner Mongolia Engineering Research Center of Comprehensive Utilization of Bio-coal Chemical Industry,Baotou 014010,China)

机构地区：[1]内蒙古科技大学化学与化工学院,内蒙古包头014010 [2]生物煤化工综合利用内蒙古自治区工程研究中心,内蒙古包头014010

出　　处：《洁净煤技术》2023年第6期99-104,共6页Clean Coal Technology

基　　金：国家自然科学基金资助项目(21766025);内蒙古科技大学科研业务费专项资金资助项目(2022年度)。

摘　　要：泥炭甲烷转化存在甲烷产量低的问题,为促进泥炭生物甲烷转化,探索酸、碱预处理对泥炭产甲烷的影响,先对草本泥炭进行酸、碱预处理,然后进行生物甲烷发酵,解析酸、碱预处理对泥炭甲烷发酵日产气量、总产气量、腐植酸、乙酸、葡萄糖、pH的影响。结果表明,酸预处理泥炭组第5天日产气量最高达8.71 mL/g(以泥炭的挥发性固体含量计,下同),比酸预处理泥炭对照组增加193.27%,碱预处理泥炭组第5天日产气量最高达3.67 mL/g,比碱预处理泥炭对照组峰值增加83.5%;酸预处理泥炭组总产气量达41.95 mL/g,比酸预处理泥炭对照组提高90.68%,碱预处理泥炭组总产气量为44.27 mL/g,比碱预处理泥炭对照组提高61.28%;酸、碱预处理均有利于促进泥炭甲烷发酵,其中碱预处理对泥炭产生物甲烷促进效果更显著,能显著提高泥炭生物甲烷产量。Peat methane conversion has the status of low methaneproduction.It is necessary to explore the effect of acid and alkali pretreatment on peat methane production,to promote peat biomethane conversion.Using herbaceous peat as raw material,biomethane fermentation was carried out after acid and alkali pretreatment,the effects of acid and alkali pretreatment on peat methane fermentation daily gas production,total gas production,humic acid concentration,acetic acid concentration,glucose concentration,pH value were analyzed.The results show that the highest daily gas production value on the 5th day of the acid pretreatment group is 8.71 mL/g,which is 193.27%higher than that of the acid pretreatment control group,and the peak daily gas production of the alkali pretreatment group is 3.67 mL/g on the 5th day,which increases by 83.5%than the alkali pretreatment control group.The total gas production of the acid pretreatment group is 41.95 mL/g,which is an increase of 90.68%compared with the acid pretreatment control group,and the total gas production of the alkali pretreatment group is 44.27 mL/g,which is 61.28%higher than the alkali pretreatment control group.Acid and alkali pretreatment are beneficial to promote the degradation of organic matter in the peat methane fermentation system,and alkali pretreatment has better effect on the production of biomethane from peat,significantly increase the biomethane production from peat.

关 键 词：泥炭 预处理 生物甲烷 腐植酸 

分 类 号：TQ536.9[化学工程—煤化学工程]