학술논문
生物炭复合载体对稻秸-猪粪混合厌氧发酵产甲烷的影响 / Effect of biochar composite carrier on methane production from the mixed anaerobic fermentation of rice straw-pig manure
Document Type
Academic Journal
Author
Source
可再生能源 / Renewable Energy Resources. 42(2):151-158
Subject
Language
Chinese
ISSN
1671-5292
Abstract
文章利用生物炭负载不同浓度的碳酸氢钠、腐植酸、吐温 20等催化调节剂构建了生物炭复合载体,并将各复合载体加入到稻秸-猪粪混合厌氧发酵系统中进行厌氧发酵.通过测定各处理的产气量、产甲烷量和秸秆木质纤维素的降解率,揭示了生物炭复合载体对混合厌氧发酵产甲烷和秸秆降解的作用.研究结果表明:生物炭复合载体能提高甲烷产气峰值并缩短甲烷产气峰值出现的时间;生物炭复合载体可以显著提高厌氧发酵系统的累积产气量和累积甲烷产量,其中以生物炭负载吐温 20 的效果最好,其次为生物炭负载腐植酸和生物炭负载碳酸氢钠;与对照组相比,生物炭负载吐温 20 处理的产气量和甲烷产量分别提高了 23.18%和 62.20%;在各处理中,秸秆的降解程度以生物炭负载吐温 20处理最高,其次为生物炭负载腐植酸、生物炭负载碳酸氢钠和对照组;吐温20、腐植酸和碳酸氢钠的最适负载浓度分别为2.25,0.75,2.10 g/L.
In this paper,biochar composite carrier was constructed by using biochar loaded with different concentrations of sodium bicarbonate,humic acid,Tween 20 and other catalytic regulators,and each composite carrier was added to the rice stub-pig manure mixed anaerobic fermentation system for anaerobic fermentation.By measuring the gas production,methane production and the degradation rate of straw lignocellulose of each treatment,the role of biochar composite carrier on methane production in mixed anaerobic fermentation and straw degradation was revealed.The results show that the biochar composite carrier can increase the peak value of methane production and shorten the time of peak value of methane production.Biochar composite carriers can significantly increase the cumulative gas production and the cumulative methane production of anaerobic fermentation systems,with the best effect of biochar-loaded Tween 20,followed by biochar-loaded humic acid and biochar-loaded sodium bicarbonate.Compared with the control group,the gas production and the methane production of biochar loaded Tween 20 treatment increased by 23.18%and 62.20%,respectively.In each treatment,the degradation degree of straw was the highest in biochar loaded Tween 20 treatment,followed by biochar-loaded humic acid,biochar-loaded sodium bicarbonate and control group.The optimal loading concentrations of Tween 20,humic acid and sodium bicarbonate were 2.25,0.75,2.10 g/L,respectively.
In this paper,biochar composite carrier was constructed by using biochar loaded with different concentrations of sodium bicarbonate,humic acid,Tween 20 and other catalytic regulators,and each composite carrier was added to the rice stub-pig manure mixed anaerobic fermentation system for anaerobic fermentation.By measuring the gas production,methane production and the degradation rate of straw lignocellulose of each treatment,the role of biochar composite carrier on methane production in mixed anaerobic fermentation and straw degradation was revealed.The results show that the biochar composite carrier can increase the peak value of methane production and shorten the time of peak value of methane production.Biochar composite carriers can significantly increase the cumulative gas production and the cumulative methane production of anaerobic fermentation systems,with the best effect of biochar-loaded Tween 20,followed by biochar-loaded humic acid and biochar-loaded sodium bicarbonate.Compared with the control group,the gas production and the methane production of biochar loaded Tween 20 treatment increased by 23.18%and 62.20%,respectively.In each treatment,the degradation degree of straw was the highest in biochar loaded Tween 20 treatment,followed by biochar-loaded humic acid,biochar-loaded sodium bicarbonate and control group.The optimal loading concentrations of Tween 20,humic acid and sodium bicarbonate were 2.25,0.75,2.10 g/L,respectively.