摘要
废弃咖啡皮渣厌氧发酵产沼气利用是解决其环境污染的重要途径之一,提高产气效率是改进厌氧发酵系统性能的重要举措。在中温(35±2)℃、TS浓度为10%条件下进行批序式厌氧发酵,水力滞留时间为30 d,考察活性炭活化过程中用碱量和活化时间对咖啡皮渣厌氧发酵性能的影响。实验发现,活性炭能提高咖啡皮渣厌氧发酵效率,添加活化时间为20 min、用碱量为4∶1的活性炭(C5组)对咖啡皮渣厌氧发酵性能的提升最大。C5组日产气最大值715 mL,总产气量为8107.5 mL,累计产甲烷量为2674.47 mL,较CK组分别提升17.21%、9.89%、26.66%;此外活性炭还能有效提高咖啡皮渣降解率,C5组TS降解率和VS降解率分别为83.93%、69.78%,较CK组分别提高了6.29%、4.79%。
The utilization of biogas production by anaerobic fermentation of waste coffee skin residue is one of the important ways to solve the environmental pollution,and improving the efficiency of gas production is an important measure to improve the performance of anaerobic fermentation system.Batch sequential anaerobic fermentation at medium temperature(35±2)℃and TS concentration was 10%,and the hydraulic retention time was 30 d to investigate the influence of alkali amount and activation time in the activation process of activated carbon on the anaerobic fermentation performance of coffee peel.The experiment found that the activated carbon can improve the anaerobic fermentation efficiency of coffee peel,and the activated carbon(C5 group with the alkali amount of 4∶1)improved the anaerobic fermentation performance of coffee peel.The maximum daily gas value of C5 group was 715 mL,total gas production was 8107.5 mL,and cumulative methane production was 2674.47 mL,up 17.21%,9.89%and 26.66%higher than CK group.In addition,activated carbon could effectively improve the degradation rate of coffee peel residue.TS degradation rate and VS in C5 group were 83.93%and 69.78%respectively,up 6.29%and 4.79%higher than CK group.
作者
晏和滇
杨德龙
周淼
周清鹭
李舷绫
王跃
赵龙
姜平红
李燕
YAN Hedian;YANG Delong;ZHOU Miao;ZHOU Qinglu;LI Xianling;WANG Yue;ZHAO Long;JIANG Pinghong;LI Yan(College of Pu'er Tea,Western-Yunnan University of Applied Technology,Pu'er,665000;College of resources and environment,Yunnan Agricultural University,Kunming,650051;Tea College of Yunnan Agricultural University,Kunming,650051;Angel Yeast(Pu'er)Co.,LTD.,Pu'er 665600,China)
出处
《再生资源与循环经济》
2024年第3期38-42,共5页
Recyclable Resources and Circular Economy
基金
滇西应用技术大学普洱茶学院项目(2021CXY01)
国家级大学生创新创业训练计划项目(202214623001)。
关键词
厌氧发酵
活性炭
咖啡皮渣
产气性能
anaerobic fermentation
activated carbon
coffee derresidue
gas producing performance
