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挥发性脂肪酸对厌氧干式发酵产甲烷的影响

Keywords: 挥发性脂肪酸,干式厌氧发酵,甲烷,牛粪

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Abstract:

为了提高中温干式厌氧间歇发酵效率,研究了发酵过程中间产物——挥发性脂肪酸对产甲烷的影响。实验分2批进行,第1批在牛粪发酵过程中分别添加乙酸、丙酸和丁酸,第2批发酵添加易产生挥发酸的厨余垃圾混合发酵。结果显示,添加单一挥发酸的发酵过程中,添加丙酸的产甲烷速度较慢,因为丙酸降解生成乙酸的速度较慢,减慢了甲烷的形成;混合发酵过程厨余垃圾产甲烷速度比牛粪快,发酵过程产生2个产气高峰;牛粪和厨余垃圾固体物质含量比在11:1到5:1范围内较好,比牛粪单独发酵产气多,产酸高但不酸败,产生的挥发酸主要是乙酸和丙酸,其中比例为7:1混合发酵的产甲烷速率最大,为4.89mL/(gVS·d)。实验表明,牛粪厌氧干式发酵过程添加一定量的厨余垃圾可加快挥发酸的产生并提高挥发酸产量,从而提高甲烷的产量,但是总挥发酸长时间超过10000mg/L,pH降到不适于产甲烷菌生长的范围时,将抑制甲烷的生成,挥发酸积累导致厌氧发酵酸败。

References

[1]  Gonzales H. B., Takyu K., Sakashita H., et al. Biological solubilization and mineralization as novel approach for the pretreatment of food waste. Chemosphere, 2005, 58(1): 57-63
[2]  王星,王德汉,马磊. 膨润土的添加用量对餐厨垃圾厌氧消化过程的影响. 农业环境科学学报,2007,26(1):330-334 Wang Xing, Wang Dehan, Ma Lei. Influence of bentonite dosages on anaerobic digestion of food waste. Journal of Agro-Environment Science, 2007,26(1):330-334(in Chinese)
[3]  Hecht C., Griehl C. Investigation of the accumulation of aromatic compounds during biogas production from kitchen waste. Bioresource Technology, 2009,100(2):654-658
[4]  Montero B., Garcia-Morales J. L., Sales D., et al. Evolution of butyric acid and the methanogenic microbial population in a thermophilic dry anaerobic reactor. Waste Manag., 2010, 30(10):1790-1797
[5]  贺延龄. 废水的厌氧生化处理. 北京:中国轻工业出版社,1998: 56-538
[6]  Calli B., Mertoglu B., Inanc B., et al. Effect of high free ammonia concentrations on the performances of anaerobic bioreactors. Process Biochem., 2005, 40(3-4):1285-1292
[7]  Forster-Carneiro T., Pérez M., Romero L. I., et al. Dry-thermophilic anaerobic digestion of organic fraction of the municipal solid waste: Focusing on the inoculum sources. Bioresource Technology, 2007, 98(17): 3195-3203
[8]  De la Rubia M. A., Pérez M., Romero L. I., et al. Effect of solids retention time (SRT) on pilot scale anaerobic thermophilic sludge digestion. Process Biochem., 2006, 41(1):79-86
[9]  De Baere L. Anaerobic digestion of solid waste: State-of-the-art. Water Sci. Technol., 2000, 41(3): 283-290
[10]  Vavilin V. A., Rytov S. V., Lokshina L. Y., et al. Distributed model of solid waste anaerobic digestion: Effects of leachate recirculation and pH adjustment. Biotechnol.Bioeng., 2003, 81(1): 66-73
[11]  孙振钧. 中国生物质产业及发展取向. 农业工程学报, 2004, 20(5): 1-5 Sun Zhenjun. Biomass industry and its developmental trends in China. Transactions of the Chinese Society of Agricultural Engineering, 2004, 20(5): 1-5(in Chinese)
[12]  赵宋敏,李定龙,王晋,等. 基于活性污泥的厨余垃圾厌氧发酵产酸研究. 环境工程学报,2011,5(1): 205-208 Zhao Songmin, Li Dinglong, Wang Jin, et al. Research on acid production by anaerobic fermentation of kitchen garbage based on activated sludge. Chinese Journal of Environmental Engineering, 2011,5(1): 205-208(in Chinese)
[13]  郭燕锋, 孔晓英, 刘婉玉, 等. 有机负荷对厨余垃圾常温厌氧发酵产甲烷的影响.农业工程学报,2011,27(S1):96-99 Guo Yanfeng, Kong Xiaoying, Liu Wanyu, et al. Effects of organic loading rate on anaerobic digestion of food waste at room temperature. Transactions of the Chinese Society of Agricultural Engineering, 2011,27(Supp.1): 96-99(in Chinese)
[14]  汪群慧, 马鸿志, 王旭明, 等. 厨余垃圾的资源化计数. 现代化工, 2004, 24(7): 56-59 Wang Qunhui, Ma Hongzhi, Wang Xuming, et al. Reclamation technology of kitchen waste. Modern Chemical Industry, 2004, 24(7): 56-59(in Chinese)
[15]  王延昌,袁巧霞,谢景欢,等. 餐厨垃圾厌氧发酵特性的研究. 环境工程学报,2009, 3(9): 1677-1682 Wang Yanchang, Yuan Qiaoxia, Xie Jinghuan, et al. Characteristic studies on anaerobic fermentation for kitchen waste. Chinese Journal of Environmental Engineering, 2009, 3(9): 1677-1682(in Chinese)
[16]  Zhang Bo, Cai Weimin, He Pinjing. Influence of lactic acid on the two-phase anaerobic digestion kitchen wastes. J. Enviro. Sci., 2007, 19(2): 244-249

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