Biogas Production from Distilled Grain Waste by Thermophilic Dry Anaerobic Digestion: Pretreatment of Feedstock and Dynamics of Microbial Community

2017 ◽  
Vol 184 (2) ◽  
pp. 685-702 ◽  
Author(s):  
Ting-Ting Wang ◽  
Zhao-Yong Sun ◽  
Yu-Lian Huang ◽  
Li Tan ◽  
Yue-Qin Tang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Biogas Production ◽  
Distilled Grain Waste ◽  
Dry Anaerobic Digestion

scholarly journals Reaction Kinetics Modelling for Dry Anaerobic Digestion of Hura Crepitans Invasive Species Lignocellulosic Biomass

2021 ◽  
Author(s):  
Akinola David Olugbemide ◽  
Blaž Likozar ◽  
Ana Oberlintner ◽  
Uroš Novak ◽  
Ekebafe Lawrence
Keyword(s):  
Anaerobic Digestion ◽  
Invasive Plant ◽  
Biogas Production ◽  
Test Procedure ◽  
Gompertz Model ◽  
Agricultural Crop ◽  
Kinetic Predictions ◽  
Hura Crepitans ◽  
The Impact ◽  
Dry Anaerobic Digestion

Abstract In this research study, the impact of the feedstock to the inoculum (F/I) amount ratio in the dry anaerobic digestion (DAD) of Hura crepitans leaves was evaluated. Measured biogas volumes, as well as the chemical kinetic predictions for exponential, logistic and Gompertz model, depicting the agreement of the simulations over time, were also determined. From the F/I equivalents 2, 4 and 6 at 22 % of packed total solids, which were considered in analysis test procedure, the DAD digester with F/I number 4 was the most promising in terms of biogas’ production rate. Its daily methane/carbon dioxide was 690 mL, while cumulative generation productivity was greater than 2 L/sample, respectively. On the other hand, the DAD reaction with F/I contained 6, recorded the lowest related expressed primary matter of < 1 L. An associated early commencement of the organic material breakdown in all bio vessels was indicative of a good start-up phase, which is one of the challenges, often encountered in DAD process. Furthermore, applied experimental methods revealed the direct correlation phenomena between biodegradability physical constants, measured molecular CH4/CO2 synthesis and simulations. Hura crepitans being an invasive plant species makes its lignocellulosic fractions desired in terms of valorisation, as it is not competing with agricultural crop products. Modelling can, moreover, contribute to consecutive operation optimisation, scaling and integrating, also taking dynamics under consideration. As opposed to bio-refining wood residues, where individual cellulose, hemicellulose or lignin biopolymers can be attained, degradation to yield CH4 is robust, as well as compatible in combustion.

Cultured and Uncultured Microbial Community Associated With Biogas Production

2021 ◽  
Author(s):  
Júlia Ronzella Ottoni ◽  
Suzan Prado Fernandes Bernal ◽  
Tiago Joelzer Marteres ◽  
Franciele Natividade Luiz ◽  
Viviane Piccin dos Santos ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Starter Culture ◽  
Sequencing Analysis ◽  
Industrial Plants ◽  
Comprehensive Information ◽  
Culture Independent

Abstract The search for sustainable development has led countries around the world to seek the improvement of technologies that use renewable energy sources. One of the alternatives in the production of renewable energy comes from the use of waste including urban solids, animal excrement from livestock and biomass residues from agro-industrial plants. These materials may be used in the production of biogas, making its production highly sustainable and environmentally friendly, in addition to reducing public expenses for the treatment of those wastes. The present study evaluated the cultivated and uncultivated microbial community from a substrate (starter) used as an adapter for biogas production in anaerobic digestion processes. 16S rDNA metabarcoding revealed domain of bacteria belonging to the phyla Firmicutes, Bacteroidota, Chloroflexi and Synergistota. The methanogenic group was represented by the phyla Halobacterota and Euryarchaeota. Through 16S rRNA sequencing analysis of isolates recovered from the starter culture, the genera Rhodococcus, Vagococcus, Lysinibacillus, Niallia, Priestia, Robertmurraya, Luteimonas and Proteiniclasticum were recovered, groups that were not observed in the metabarcoding data. The groups mentioned are involved in the metabolism pathways of sugars and other compounds derived from lignocellulosic material, as well as in anaerobic methane production processes. The results demonstrate that culture-dependent approaches, such as isolation and sequencing of isolates, as well as culture-independent studies, such as the Metabarcoding approach, are complementary methodologies that, when integrated, provide robust and comprehensive information about the microbial communities involved in various processes, including the production of biogas in anaerobic digestion processes.

scholarly journals Influence of Temperature on Biogas Production Efficiency and Microbial Community in a Two-Phase Anaerobic Digestion System

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 133 ◽  
Author(s):  
Shiwei Wang ◽  
Fang Ma ◽  
Weiwei Ma ◽  
Ping Wang ◽  
Guang Zhao ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Production Efficiency ◽  
Biogas Production ◽  
Two Phase ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Acidogenic Phase ◽  
Methanogenic Phase

In this study, the influence of temperature on biogas production efficiency and the microbial community structure was investigated in a two-phase anaerobic digestion reactor for co-digestion of cow manure and corn straw. The results illustrated that the contents of solluted chemical oxygen demand (SCOD) and volatile fatty acid (VFA) in the acidogenic phase and biogas production in the methanogenic phase maintained relatively higher levels at temperatures ranging from 35–25 °C. The methane content of biogas production could be maintained higher than 50% at temperatures above 25 °C. The microbial community structure analysis indicated that the dominant functional bacteria were Acinetobacter, Acetitomaculum, and Bacillus in the acidogenic phase and Cenarchaeum in the methanogenic phase at 35–25 °C. However, the performances of the acidogenic phase and the methanogenic phase could be significantly decreased at a lower temperature of 20 °C, and microbial activity was inhibited obviously. Accordingly, a low temperature was adverse for the performance of the acidogenic and methanogenic phases, while moderate temperatures above 25 °C were more conducive to high biogas production efficiency.

Improved biogas production of dry anaerobic digestion of swine manure

2019 ◽  
Vol 294 ◽  
pp. 122188 ◽  
Author(s):  
Youqian Xiao ◽  
Hongnan Yang ◽  
Han Yang ◽  
Hong Wang ◽  
Dan Zheng ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Swine Manure ◽  
Dry Anaerobic Digestion

Biogas Production and Microbial Community Dynamics during the Anaerobic Digestion of Rice Straw at 39–50 °C: A Pilot Study

2018 ◽  
Vol 32 (4) ◽  
pp. 5157-5163 ◽  
Author(s):  
Qing Yu ◽  
Zhenzhen Tian ◽  
Jingyuan Liu ◽  
Jun Zhou ◽  
Zhiying Yan ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Pilot Study ◽  
Rice Straw ◽  
Community Dynamics ◽  
Biogas Production ◽  
Microbial Community Dynamics

Study of an enhanced dry anaerobic digestion of swine manure: Performance and microbial community property

2019 ◽  
Vol 282 ◽  
pp. 353-360 ◽  
Author(s):  
Yu-ying Hu ◽  
Jing Wu ◽  
Huai-zhi Li ◽  
Souhila Poncin ◽  
Kai-jun Wang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Swine Manure ◽  
Community Property ◽  
Dry Anaerobic Digestion
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