摘要
针对鸡粪厌氧发酵产甲烷过程中的氨抑制问题,采用生化产甲烷潜力(BMP)装置在中温(35±1)℃条件下进行以鸡粪为底物,沸石为添加物的厌氧消化试验,探究不同沸石添加量(添加沸石体积占发酵液体积的百分比2.5%、5.0%、10.0%和0%)对鸡粪厌氧发酵产沼气特性的影响。结果表明:当沸石添加量为10.0%时,总产气量最大,达到3340 mL。沸石添加量5.0%的试验组在发酵第21天时甲烷含量达到最大值73.06%,比对照组提高4.86%。采用一级动力学模型、Transfer模型和Cone模型进行累积产气率的动力学分析,其中Cone模型与实际累积产气率拟合度最高(R2为0.9837~0.9964)。
To remove the ammonia inhibition in the processes of chicken manure anaerobic digestion(AD),different doses of zeolites(2.5%,5.0%,10.0%,0%;on working volume basis)were added to the biochemical methane potential(BMP)system of chicken manure.The effects of zeolites on AD performance at(35±1)℃were investigated.The results show that the total yield of biogas reaches maximum(3340 m L)when the dose of zeolite is 10%.At the 21 st day,the experimental group with 5%zeolite obtains the maximum CH4 content of 73.06%,which is 4.86%higher than that of the control.Three classical kinetic models including first-order kinetics,Transfer function model and Cone model are chosen to describe the methane production kinetics from the chicken manure.Among them,the Cone model(R2:0.9837-0.9964)fits the experimental data best.
作者
崔少峰
李坤
刘荣厚
马瑞洁
于琼
Cui Shaofeng;Li Kun;Liu Ronghou;Ma Ruijie;Yu Qiong(Biomass Energy Engineering Research Centre,School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第6期120-127,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51376121)。
关键词
厌氧发酵
沸石
动力学
氨抑制
鸡粪
沼气
anaerobic digestion
zeolite
kinetics
ammonia inhibition
chicken manure
biogas
