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Effects of different forms of vegetable waste on biogas and methane production performances in a batch anaerobic digestion reactor
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects ( IF 2.9 ) Pub Date : 2020-09-10 , DOI: 10.1080/15567036.2020.1818003
Binbin Tang 1, 2, 3 , Mimi He 1, 2, 3 , Yaojun Dong 1, 2, 3 , Jianfeng Liu 1, 2, 3 , Xingling Zhao 1, 2, 3 , Changmei Wang 1, 2, 3 , Kai Wu 1, 2, 3 , Fang Yin 1, 2, 3 , Wudi Zhang 1, 2, 3
Affiliation  

Vegetable waste has a high biodegradation ability and moisture content and causes soil and underground water pollution. High moisture vegetable waste could be separated into juice and residual material for efficient disposal and energy recovery by anaerobic digestion (AD). In this study, two kinds of vegetables (Chinese cabbage and mustard) wastes in three different forms (juice, residue, and their mixture) were used to determine their AD process performances and methane production potential. The results showed that the biogas production rate of the Chinese cabbage residue (CR) was the highest, reaching 800 ± 62 mL/g VS. The biogas production rate of mustard juice (MJ) was the lowest, as low as 498 ± 60 mL/g VS. The results also suggested that the biogas and methane production potential in the residue groups of both vegetable wastes treatments was higher than that in the juice groups. Furthermore, the results also showed that the average biogas and methane production rates of the residue treatments of both Chinese cabbage and mustard wastes were much higher than those of their mixtures. The concentrations of volatile fatty acids (VFAs) and total ammonia nitrogen (TAN) in the juice treatments groups were much higher than those in the residue treatments groups, resulting in the lowest biogas and methane production potential being in the juice treatments groups. With the modified Gompertz equation fitting analysis, the results also confirmed that the highest biogas and methane production ability in the CR treatment groups among all the six treatments, with a correlation coefficient (R2) above 0.992. The results of this study provide new insights into the efficient disposal and energy recovery of vegetable wastes with AD for further industrial biogas engineering applications.



中文翻译:

分批厌氧消化反应器中不同形式的蔬菜废物对沼气和甲烷生产性能的影响

蔬菜废料具有很高的生物降解能力和水分含量,并引起土壤和地下水污染。高水分的蔬菜废物可以分为果汁和残留物质,以通过厌氧消化(AD)进行有效处理和回收能量。在这项研究中,使用三种不同形式(果汁,残留物及其混合物)的两种蔬菜(大白菜和芥末)废物来确定其AD工艺性能和甲烷生产潜力。结果表明,大白菜渣(CR)的沼气产量最高,达到800±62 mL / gVS。芥菜汁(MJ)的沼气产生率最低,低至498±60 mL / gVS。结果还表明,两种蔬菜废物处理的残留物组中沼气和甲烷的生产潜力均高于果汁类。此外,结果还显示,大白菜和芥末废渣的残渣处理的平均沼气和甲烷生产率均远高于其混合物。果汁处理组中的挥发性脂肪酸(VFA)和总氨氮(TAN)的浓度远高于残留物处理组,导致果汁处理组中沼气和甲烷的生产潜力最低。通过改进的Gompertz方程拟合分析,结果还证实,在所有六个处理中,CR处理组的沼气和甲烷生产能力最高,2)高于0.992。这项研究的结果为利用AD用于进一步工业沼气工程应用中的蔬菜废物的有效处置和能量回收提供了新的见解。

更新日期:2020-09-11
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