构树与不同生物质废弃物混合厌氧发酵产气性能研究  

Investigation on the performance of anaerobic co-digestion process of Broussonetia papyrifera and different organic waste

作　　者：何宇 甄峰[2,3,4,6] 李金平 孙永明[2,4,6] 鲁涛[1,2,4,5,6] He Yu;Zhen Feng;Li Jinping;Sun Yongming;Lu Tao(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;Department of Agriculture Biological Environment and Energy Engineering,School of Engineering,Northeast Agriculture University,Harbin 150030,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;China Western Energy&Environment Research Center,Lanzhou University of Technology,Lanzhou 730050,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]中国科学院广州能源研究所,广东广州510640 [3]东北农业大学工程学院,黑龙江哈尔滨150030 [4]中国科学院可再生能源重点实验室,广东广州510640 [5]兰州理工大学西部能源与环境中心,甘肃兰州730050 [6]广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640

出　　处：《可再生能源》2020年第8期1006-1013,共8页Renewable Energy Resources

基　　金：广州市科技计划项目(201803030007);广东省农业技术研发项目(2018LM2178);中国科学院战略性先导科技专项(A类)(XDA21050400);广东省科技计划项目(2017B020238005)。

摘　　要：在温度(55±1℃)和总挥发性固体浓度(2%)为固定参数,碳氮比(C/N)为可变参数的条件下,研究了构树和牛粪、餐厨垃圾、水稻秸秆分别进行混合发酵的产气性能。研究结果表明:与单一发酵相比,混合发酵均能提高甲烷产量,当构树与餐厨垃圾混合物的C/N为20时,可获得最高的累积产甲烷量(411.71 mL/g),比构树和餐厨垃圾单独发酵时的累积产甲烷量分别提高了45.45%和12.61%;构树与餐厨垃圾、牛粪、水稻秸秆进行混合发酵时,原料之间均存在协同作用,其中,构树与水稻秸秆在C/N为15的条件下进行混合发酵时,协同指数最高,为18.69%;构树与不同废弃物的混合厌氧发酵过程符合修正Gompertz方程(R2>0.97),可用该拟合方程模拟混合厌氧发酵过程。This paper investigated the co-digestion performance of Broussonetia papyrifera and cow dung,food waste and rice straw under the configuration of high temperatures of 55±1℃,VS concentration of 2%and a fixed C/N ratio.Results indicated that co-digestion process can significantly increase the methane yield.When the C/N of food waste and Broussonetia papyrifera was 20,the highest methane yield can be obtained(411.71 mL/g),which is 45.45%and 12.61%higher than that of the separate digestion of Broussonetia papyrifera and food waste.Obviously,there is a synergistic effect between co-digestion of Broussonetia papyrifera and food waste,cow dung and rice straw,respectively.When the C/N of Broussonetia papyrifera and rice straw is 15,the synergistic effect(18.69%)is the strongest.The co-digestion process of Broussonetia papyrifera and other organic materials is fitted to the modified Gompertz equation(R2>0.97).Thus,it can be used to simulate the whole co-digestion process.

关 键 词：构树 牛粪 餐厨垃圾 水稻秸秆 厌氧发酵 甲烷 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.2[农业科学—农业机械化工程]