Recognition of core microbial communities contributing to complex organic components degradation during dry anaerobic digestion of chicken manure

2020 ◽  
Vol 314 ◽  
pp. 123765
Author(s):  
Xiang Li ◽  
Xiuyun Zhao ◽  
Jinjin Yang ◽  
Shaokang Li ◽  
Sicong Bai ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Microbial Communities ◽  
Chicken Manure ◽  
Organic Components ◽  
Complex Organic ◽  
Dry Anaerobic Digestion

scholarly journals Dry Anaerobic Digestion of Chicken Manure: A Review

2020 ◽  
Vol 10 (21) ◽  
pp. 7825
Author(s):  
Yevhenii Shapovalov ◽  
Sergey Zhadan ◽  
Günther Bochmann ◽  
Anatoly Salyuk ◽  
Volodymyr Nykyforov
Keyword(s):  
Anaerobic Digestion ◽  
Anaerobic Fermentation ◽  
Economic Effect ◽  
Ammonia Concentration ◽  
Ammonia Removal ◽  
Chicken Manure ◽  
Ammonia Content ◽  
Ammonia Inhibition ◽  
Solids Content ◽  
Dry Anaerobic Digestion

Providing anaerobic digestion is a prospective technology for utilizing organic waste, however, for waste with a high content of nitrogen such as manure, dilution is necessary to decrease the ammonia inhibition effect which leads to the production of a huge effluent amount which is difficult to use. Dry anaerobic digestion has some advantages such as reduced reactor volume, higher volumetric methane yield, lower energy consumption for heating, less wastewater production, and lower logistic costs for fertilizers. These factors generate interest in using it for treatment of even high-nitrogen substrates. The purpose of this work was to analyze different dry anaerobic digestion technologies, the features of dry anaerobic digestion, laboratory studies on chicken manure dry anaerobic digestion, and methods of reducing inhibitors’ effects. Nowadays, there are no dry anaerobic industrial plants working on chicken manure. However, studies on dry anaerobic digestion of chicken manure have proven the possibility of methane production under fermentation of chicken manure with high total solids content, but the process has been described as being unstable. Co-fermentation, ammonium/ammonia removal, and adaptation of the microbial consortium have been used to decrease the effect of ammonia inhibition. A prospective way for ammonia concentration control is absorption using a non-volatile sorbent located in the reactor. It decreases ammonia content during wet anaerobic digestion by 33% and it is characterized by having a positive economic effect. Therefore, dry anaerobic fermentation of chicken manure is possible, but there is still no efficient way to provide it. The results of this article should be helpful in the selection of anaerobic digestion technology for treating chicken manure.

scholarly journals Structure of Microbial Communities When Complementary Effluents Are Anaerobically Digested

2021 ◽  
Vol 11 (3) ◽  
pp. 1293
Author(s):  
Ana Eusébio ◽  
André Neves ◽  
Isabel Paula Marques
Keyword(s):  
Anaerobic Digestion ◽  
Microbial Communities ◽  
Volatile Fatty Acids ◽  
Olive Mill Wastewater ◽  
Organic Load ◽  
Rrna Gene ◽  
Bacterial Populations ◽  
Next Generation Sequencing Ngs ◽  
Generation Sequencing ◽  
Olive Mill

Olive oil and pig productions are important industries in Portugal that generate large volumes of wastewater with high organic load and toxicity, raising environmental concerns. The principal objective of this study is to energetically valorize these organic effluents—piggery effluent and olive mill wastewater—through the anaerobic digestion to the biogas/methane production, by means of the effluent complementarity concept. Several mixtures of piggery effluent were tested, with an increasing percentage of olive mill wastewater. The best performance was obtained for samples of piggery effluent alone and in admixture with 30% of OMW, which provided the same volume of biogas (0.8 L, 70% CH4), 63/75% COD removal, and 434/489 L CH4/kg SVin, respectively. The validation of the process was assessed by molecular evaluation through Next Generation Sequencing (NGS) of the 16S rRNA gene. The structure of the microbial communities for both samples, throughout the anaerobic process, was characterized by the predominance of bacterial populations belonging to the phylum Firmicutes, mainly Clostridiales, with Bacteroidetes being the subdominant populations. Archaea populations belonging to the genus Methanosarcina became predominant throughout anaerobic digestion, confirming the formation of methane mainly from acetate, in line with the greatest removal of volatile fatty acids (VFAs) in these samples.

Effects of silver nanoparticles on performance of anaerobic digestion of sewage sludge and associated microbial communities

2021 ◽  
Vol 171 ◽  
pp. 1014-1025
Author(s):  
Anna Grosser ◽  
Anna Grobelak ◽  
Agnieszka Rorat ◽  
Pauline Courtois ◽  
Franck Vandenbulcke ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
Microbial Communities

Comparison of the microbial communities in solid-state anaerobic digestion (SS-AD) reactors operated at mesophilic and thermophilic temperatures

2014 ◽  
Vol 99 (2) ◽  
pp. 969-980 ◽  
Author(s):  
Yueh-Fen Li ◽  
Michael C. Nelson ◽  
Po-Hsu Chen ◽  
Joerg Graf ◽  
Yebo Li ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Microbial Communities
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