苯甲酸对褐煤生物甲烷化的影响
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摘要
为探索褐煤主要成分腐植酸降解产物苯甲酸对褐煤生物甲烷化利用的影响,提高褐煤制生物甲烷的得率,以内蒙古平庄褐煤为原料,在褐煤生物甲烷化反应体系中添加不同质量浓度的苯甲酸,解析发酵过程中pH值、VFA质量浓度、日产气量和总产气量的变化。结果显示,不添加苯甲酸的褐煤发酵组的总产气量为440.7mL,2 500mg/L苯甲酸加入量的褐煤发酵组的总产气量为845.7mL,暗示腐植酸降解产物苯甲酸对褐煤生物甲烷化促进作用显著。
To explore the effect of benzoic acid,the degradation product of humic acid which is the main component of lignite,on lignite methanation,and improve the yield of lignite biomethane,using Pingzhuang lignite in Inner Mongolia as raw material,lignite biomethanation reaction system was added with benzoic acid of different mass concentration to analyze the changes of pH value,VFA mass concentration,daily gas production and total gas production during fermentation.The results show that the total gas production of lignite fermentation group without benzoic acid is 440.7mL,but that of lignite fermentation group with 2 500mg/L benzoic acid is 845.7mL.Benzoic acid,a degradation product of humic acid,has a significant effect on lignite biomethanation.
To explore the effect of benzoic acid,the degradation product of humic acid which is the main component of lignite,on lignite methanation,and improve the yield of lignite biomethane,using Pingzhuang lignite in Inner Mongolia as raw material,lignite biomethanation reaction system was added with benzoic acid of different mass concentration to analyze the changes of pH value,VFA mass concentration,daily gas production and total gas production during fermentation.The results show that the total gas production of lignite fermentation group without benzoic acid is 440.7mL,but that of lignite fermentation group with 2 500mg/L benzoic acid is 845.7mL.Benzoic acid,a degradation product of humic acid,has a significant effect on lignite biomethanation.
引文
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[2]JIN Lijun,LI Yang,LIN Lin,et al.Drying Characteristic and Kinetics of Huolinhe Lignite in Nitrogen and Methane Atmospheres[J].Fuel,2015,152:80-87.
[3]WANG Han,LIN Hai,CARLY P,et al.Enhancing Biogenic Methane Generation from a Brown Coal by Combining Different Microbial Communities[J].International Journal of Coal Geology,2016(154/155):107-110.
[4]王爱宽,秦勇,邵培.实验室条件下褐煤生物气生成的化学影响因素[J].煤炭学报,2016,41(4):948-953.WANG Aikuan,QIN Yong,SHAO Pei.Chemical Factors Influencing Lignite Biogenic Gas Production in Laboratory Condition[J].Journal of China Coal Society,2016,41(4):948-953.
[5]王艳婷,韩娅新,何环,等.褐煤生物产气影响因素研究[J].煤炭科学技术,2013,41(11):120-123.WANG Yanting,HAN Yaxin,HE Huan,et al.Study on Influencing Factors for Biogenic Gas Production in Lignite[J].Coal Science and Technology,2013,41(11):120-123.
[6]DOSKOCˇIL L,BURDKOV-SZEWIECZKOVJ,ENEV V,et al.Spectral Characterization and Comparison of Humic Acids Isolated from Some European Lignites[J].Fuel,2018,213:123-132.
[7]AL-FAIYZ Y S S.CPMAS 13C NMR Characterization of Humic Acids from Composted Agricultural Saudi Waste[J].Arabian Journal of Chemistry,2017,10(Supplement 1):S839-S853.
[8]HARWOOD C S,GERHARD B,HERRMANN H,et al.Anaerobic Metabolism of Aromatic Compounds via the Benzoyl-CoAPathway[J].FEMS Microbiology Reviews,1999,22(5):439-458.
[9]DAZ E,JIMNEZ J I,NOGALES J.Aerobic Degradation of Aromatic Compounds[J].Current Opinion in Biotechnology,2013,24(3):431-442.
[10]SHAO Pei,WANG Aikuan,WANG Wenfeng.Experimental Simulation of Biogenic Coalbed Gas Generation from Lignite and High-volatile Bituminous Coals[J].Fuel,2018,219:111-119.
[11]WANG Han,LIN Hai,DONG Yingbo,et al.Experiments on the Gas Production of Brown Coal Degraded by Exogenous Methanogens[J].Petroleum Exploration and Development,2012,39(6):813-817.
[12]HAIDER R,GHAURI M A,JONES E J,et al.Methane Generation Potential of Thar Lignite Samples[J].Fuel Processing Technology,2014,126:309-314.
[13]JOHNSON C W,BECKHAM G T.Aromatic Catabolic Pathway Selection for Optimal Production of Pyruvate and Lactate from Lignin[J].Metabolic Engineering,2015,28:240-247.
[14]UPADHYAY U,KUMAR P,MEHROTRA I.Anaerobic Degradation of Benzoate:Batch Studies[J].Bioresource Technology,2008,99(15):6861-6865.
[15]ZHUANG Li,TANG Jia,WANG Yueqiang,et al.Conductive Iron Oxide Minerals Accelerate Syntrophic Cooperation in Methanogenic Benzoate Degradation[J].Journal of Hazardous Materials,2015,293:37-45.
[16]BHARATHIRAJA B,SUDHARSANA T,JAYAMUTHUNAGAI J,et al.Biogas Production:a Review on Composition,Fuel Properties,Feed Stock and Principles of Anaerobic Digestion[J].Renewable and Sustainable Energy Reviews,2018,94:570-582.
[17]BERMUDEZ-PENABAD N,KENNES C,VEIGA M C.Anaerobic Digestion of Tuna Waste for the Production of Volatile Fatty Acids[J].Waste Management,2017,68:96-102.
[18]PARK S Y,LIANG Yanna.Biogenic Methane Production from Coal:a Review on Recent Research and Development on Microbially Enhanced Coalbed Methane(MECBM)[J].Fuel,2016,166:258-267.
[19]RITTER D,VINSON D,BAMHART E,et al.Enhanced Microbial Coalbed Methane Generation:a Review of Research,Commercial Activity,and Remaining Challenges[J].International Journal of Coal Geology,2015,146:28-41.
[20]PARSA M R,TSUKASAKI Y,PERKINS E L,et al.The Effect of Densification on Brown Coal Physical Properties and Its Spontaneous Combustion Propensity[J].Fuel,2017,193:54-64.