摘要
探究不同总固体(TS)配比对白菜尾菜与羊粪厌氧发酵的影响,为甘肃省尾菜进行资源化利用提供理论基础。通过白菜尾菜与羊粪混合进行高温厌氧发酵,在发酵温度为(55±1)℃,原料总TS为3.15%,初始pH值为7.5±0.1条件下,运行30 d后,研究5种不同TS比例:2∶1(T1)、1∶1(T2)、1∶1.5(T3)、1∶2(T4)、1∶2.5(T5)对白菜尾菜与羊粪厌氧发酵的影响。结果表明:T1处理甲烷产量最高,为69790.68 mg·m^(-2);各处理系统环境调控能力:T1>T2>T4>T5>T3;其水解能力:T3>T5>T4>T2>T1;其缓冲能力:T1>T2>T4>T5>T3;随着白菜尾菜与羊粪的TS比例上升时,各处理的电导率、碱度浓度也在增加;T3、T5处理在发酵周期内都处于绝对稳定状态,其它处理的厌氧系统大部分时间处在绝对稳定状态,少部分时间处在较为稳定的状态;各处理在运行过程中未出现明显的酸抑制和氨抑制。当白菜尾菜与羊粪的TS比例为1∶2时,更有利于白菜尾菜与羊粪厌氧发酵的进行。
To explore the effect of different total solid(TS)ratio on anaerobic fermentation of cabbage tails and sheep dung,and provided a theoretical basis for resource utilization of tail vegetables in Gansu Province.The high temperature anaerobic fermentation was carried out by mixing cabbage tails and sheep dung.Under the conditions of(55±1)℃fermentation temperature,3.15%total TS of raw materials,and 7.5±0.1 initial pH value,after 30 days of operation,the effects of five different TS ratios∶2∶1(T1),1∶1(T2),1∶1.5(T3),1∶2(T4),1∶2.5(T5)on the anaerobic fermentation of cabbage tails and sheep dung were studied.RESULTS:T1 has the highest methane yield,69790.68 mg·m^(-2);Environmental control capacity of each treatment system:T1>T2>T4>T5>T3;Its hydrolysis capacity:T3>T5>T4>T2>T1;Buffer capacity:T1>T2>T4>T5>T3;With the increase of TS ratio between cabbage tails and sheep dung,the conductivity and alkalinity concentration of the treatments were also increased;T3 and T5 treatments were in an absolutely stable state during the fermentation cycle,while the anaerobic system of other treatments were in an absolutely stable state for most of the time,and a small part of time were in a relatively stable state;There was no obvious inhibition of acid or ammonia during operation.When the TS ratio of cabbage tails and sheep dung was 1∶2,it was more conducive to the anaerobic fermentation of cabbage tails and sheep dung.
作者
王勇智
蔡立群
陈晓龙
申岳
周生虎
WANG Yongzhi;CAI Liqun;CHEN Xiaolong;SHEN Yue;ZHOU Shenghu(College of Resources and Environment,Gansu Agricultural University,Lanzhou 730070,China)
出处
《中国沼气》
CAS
2023年第6期10-17,共8页
China Biogas
基金
甘肃省教育厅高校产业支撑项目(2021CYZC-50)。
关键词
厌氧发酵
白菜尾菜
羊粪
甲烷累积产量
发酵液特性
anaerobic fermentation
cabbage tails
sheep dung
cumulative methane production
characteristics of fermentation broth
作者简介
王勇智(1998-),男,汉族,甘肃兰州人,硕士,主要研究方向为尾菜资源化利用,E-mail:1484276627@qq.com;通信作者:蔡立群,E-mail:cailq@gsau.edu.cn。
