摘要
目的为提高青霉素菌渣厌氧消化性能。方法在(35±2)℃,采用批式发酵工艺,在不同有机负荷菌渣中添加不同量生物炭进行厌氧消化。结果添加生物炭,在有机负荷为2%VS和3%VS时,沼气产量比对照提高42.8%以上,甲烷含量比对照提前3~5d达到峰值,恢复pH值至7.0以上的时间明显缩短,VFA下降速度增快,氨氮浓度均在2500mg/L以下,VS去除率提高20%以上。有机负荷为4%VS时,沼气产量比对照提高了175.2%,但系统仍未正常运行。未添加生物炭,有机负荷为3%VS和4%VS时,发酵系统酸化,没有启动成功。结论说明添加生物炭确实可以调节系统酸碱平衡、缓解氨氮抑制、提高系统有机负荷及运行稳定性。
Objective To improve the efficiency of anaerobic degradation of penicillin residues.Methods Different amounts of biochars were added in batch anaerobic fermentation at(35±2)℃.Results Adding biochars in the fermentation can make the biogas production increased by 42.8%over the control,the methane content peaked 3~5 days earlier than the control.The time to restore the pH to above 7.0 was significantly shortened.The VFA declined faster,and the ammonia nitrogen concentration below 2500 mg/L.The VS removal rate increased by more than 20%when the organic loading were 2%VS and 3%VS.The biogas production increased by 175.2%compared with the control when the organic loading was 4%VS,but the system was still not operating normally.The fermentation system was acidified and did not start successfully when biochars were not added and the organic loading were 3%VS and 4%VS.Conclusion It is further illustrated that the addition of biochar can adjust the acid-base balance,alleviate the inhibition of ammonia nitrogen,increase the organic load of the system,and stabilize the operation.
作者
程辉彩
赵燕肖
方楠
吴健
习彦花
崔冠慧
张丽萍
Cheng Hui-cai;Zhao Yan-xiao;Fang Nan;Wu Jian;Xi Yan-hua;Cui Guan-hui;Zhang Li-ping(Institute of Biology,Hebei Academy of Sciences,Shijiazhuang 050081)
出处
《中国抗生素杂志》
CAS
CSCD
2020年第5期527-532,共6页
Chinese Journal of Antibiotics
基金
河北省高层次人才资助项目(No.E2015100006)
河北省科学院高层次人才资助项目(No.2017G12)
河北省财政预算项目(No.18301和No.19301)。
关键词
青霉素菌渣
生物炭
厌氧消化
有机负荷
甲烷产量
Penicillium fermentation residues
Biochar
Anaerobic degradation
Organic loading
Methane production
