Biochemical hydrogen potential assay for predicting the patterns of the kinetics of semi-continuous dark fermentation

被引：9
|
作者：
Kovalev, Andrey A. [1 ]
Kovalev, Dmitriy A. [1 ]
Zhuravleva, Elena A. [2 ]
Laikova, Alexandra A. [2 ]
Shekhurdina, Svetlana V. [2 ]
Vivekanand, Vivekanand [3 ]
Litti, Yuriy V. [2 ]
机构：
[1] Fed Sci Agroengn Ctr VIM, 1st Inst Sky Proezd 5, Moscow 109428, Russia
[2] Russian Acad Sci, Fed Res Ctr Fundamentals Biotechnol, 60 Let Oktjabrja Pr-T,7,Bld 2, Moscow 117312, Russia
[3] Malaviya Natl Inst Technol Jaipur, Ctr Energy & Environm, Jaipur 302017, Rajasthan, India
来源：
BIORESOURCE TECHNOLOGY | 2023年 / 376卷
基金：
俄罗斯科学基金会;
关键词：
Dark fermentation; Modified Gompertz model; First -order model; Biochemical hydrogen potential assay; ANAEROBIC-DIGESTION; WASTE-WATER; BIOMASS; LACTIS;
D O I：
10.1016/j.biortech.2023.128919
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The performance and kinetics response of thermophilic semi-continuous dark fermentation (DF) of simulated complex carbohydrate-rich waste was investigated at various hydraulic retention times (HRT) (2, 2.5, and 3 d) and compared with data obtained from biochemical hydrogen potential assay (BHP). A culture of Thermoanaerobacterium thermosaccharolyticum was used as the inoculum and dominated both in BHP and semi-continuous reactor. Both the modified Gompertz and first-order models described the DF kinetics well (R2 = 0.97-1.00). HRT of 2.5 d was found to be optimal in terms of maximum hydrogen production rate and hydrogen potential, which were 3.97 and 1.26 times higher, respectively, than in BHP. The hydrolysis constant was highest at HRT of 3 d and was closest to the value obtained in the BHP. Overall, BHP has been shown to be a useful tool for predicting H2 potential and the hydrolysis constant, while the maximum H2 production rate is greatly underestimated.
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收藏
页数：8
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