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生物炭强化有机废弃物厌氧发酵技术研究 预览

Research progress on biochar enhanced anaerobic fermentation technology of organic wastes
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摘要 厌氧发酵是中国有机废弃物处理的重要技术途径,但利用厌氧发酵技术在高负荷条件下处理有机废弃物过程中,因有机酸、氨氮等抑制性物质作用,易导致厌氧发酵运行不稳定,处理效率不高等问题。生物炭是生物质材料在无氧或缺氧条件下经高温热解形成的多孔径碳质材料,具有比表面积高,孔隙结构复杂,表面活性基团丰富和导电性强等特性,并被广泛用于厌氧发酵技术研究。近年来国内外研究表明,生物炭能有效强化厌氧发酵,提高厌氧发酵过程中有机废弃物的处理效率。然而,对于生物炭强化厌氧发酵技术途径,目前仍未见系统的梳理和报道。该文对生物炭材料的化学组成、孔隙结构、表面官能团关键因素及生物炭强化厌氧发酵技术的重要途径进行了系统分析和归纳,从生物炭材料的理化性质出发,阐述了生物炭对于厌氧发酵技术的强化效果及强化途径,强化途径主要包括:提升系统缓冲能力、微生物载体作用和强化电子传递等,在此基础上提出了今后生物炭强化有机废弃物厌氧发酵技术的重点研究内容和方向,为开发厌氧发酵强化技术提供指导。 Anaerobic fermentation is an important technical way to deal with organic wastes in China.However,in the process of treating organic wastes under high load conditions by anaerobic fermentation technology,it is easy to cause anaerobic fermentation operation unstable and the efficiency of organic waste treatment is not high due to the inhibitory substances such as the high concentration of organic acid and ammonia nitrogen.Biochar is a multi-aperture carbonaceous material formed by high-temperature pyrolysis of biomass materials under the anaerobic or anoxic conditions.Biochar has many excellent properties,such as the high specific surface area,good conductivity,mass transfer and heat transfer performance.At the same time,biochar also contains a lot of ash,and the abundant ash contains a lot of elements such as calcium and magnesium,which makes the biochar have good adsorption and ion exchange performance.As an additive for anaerobic fermentation,it can effectively improve the pH value,alkalinity and the acid buffer capacity of the anaerobic fermentation system,and alleviate the inhibition of the excessive production of methane by the volatile fatty acids during the lag period.It can cause the adhesion of microorganisms and had a certain microbial carrier effect.Addition of biochar can effectively solve the problems of the low efficiency of gas production and unstable fermentation in current anaerobic fermentation,and biochar is now widely used in anaerobic fermentation technology research.In recent years,the research status of domestic and foreign showed that biochar could effectively strengthen anaerobic fermentation under certain conditions and improve the treatment efficiency of organic wastes in anaerobic fermentation process.However,for the biochar-enhanced anaerobic fermentation technology approach,there were still no systematic reviewed and reported.In this paper,the chemical composition,surface pore structure,key factors of surface functional groups and important ways of biochar-enhanced anaerobic fermenta
作者 冯晶 荆勇 赵立欣 姚宗路 申瑞霞 Feng Jing;Jing Yong;Zhao Lixin;Yao Zonglu;Shen Ruixia(Center of Energy and Environmental Protection,Chinese Academy of Agricultural Engineering,Key Laboratory ofEnergy Resource Utilization from Agriculture Residue,Ministry of Agriculture,Beijing 100125,China;College of Engineering and Technology,Northeast Forestry University,Harbin 150036,China)
出处 《农业工程学报》 EI CAS CSCD 北大核心 2019年第12期256-264,共9页 Transactions of the Chinese Society of Agricultural Engineering
基金 现代农业产业技术体系专项资金资助.
关键词 废弃物 发酵 生物炭 强化技术 研究进展 wastes fermentation biochar strengthening pathway research progress
作者简介 冯晶,博士,高级工程师,研究方向为有机废弃物资源化利用技术研究。Email:fengjing0204@sina.com;通信作者:赵立欣,博士,研究员,主要从事农业废弃物能源化研究。Email:zhaolixin5092@163.com.
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