Effect of the Organic Loading Rate Increase and the Presence of Zeolite on Microbial Community Composition and Process Stability During Anaerobic Digestion of Chicken Wastes

2015 ◽  
Vol 70 (4) ◽  
pp. 948-960 ◽  
Author(s):  
Elvira E. Ziganshina ◽  
Dmitry E. Belostotskiy ◽  
Olga N. Ilinskaya ◽  
Eugenia A. Boulygina ◽  
Tatiana V. Grigoryeva ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Community Composition ◽  
Rate Increase ◽  
Loading Rate ◽  
Microbial Community Composition ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Process Stability

scholarly journals Effects of Slurry Reflux on the Stability and Microbial Community Structure of Corn Stalk Anaerobic Digestion System

2021 ◽  
Author(s):  
ling zhao ◽  
yang gao ◽  
jiamin zhao ◽  
jiaixng sun ◽  
zhen wang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
High Throughput Sequencing ◽  
Loading Rate ◽  
Ph Value ◽  
Community Diversity ◽  
System Stability ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
The Stability

Abstract Anaerobic digestion (AD) of corn stalks with slurry reflux and non-reflux was compared and evaluated，to clarify the effects of slurry reflux on AD. It was found that slurry reflux increased cumulative methane production by 45.80% and improved system stability. With the increase of organic loading rate (OLR), pH value and oxidation-reduction potential (ORP) of reflux group remained 7.16±0.23 and -338.71±9.22. High-throughput sequencing results showed that slurry reflux slowed down the decrease of microbial community diversity, and the richness of bacterial community increased by 9.16%. The dominant microorganisms were Bacteroidetes and Methanothrix in reflux group, the relative abundances were 32.41% and 41.75%, respectively. The increase of organic loading rate (OLR) altered the main methane-producing pathway of the AD system, and slurry reflux can delay this trend.

Impact of organic loading rate and reactor design on thermophilic anaerobic digestion of mixed supermarket waste

2021 ◽  
Vol 123 ◽  
pp. 52-59
Author(s):  
L. Megido ◽  
L. Negral ◽  
Y. Fernández-Nava ◽  
B. Suárez-Peña ◽  
P. Ormaechea ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Loading Rate ◽  
Reactor Design ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Thermophilic Anaerobic Digestion

Effect of organic loading rate on anaerobic digestion of thermally pretreated Scenedesmus sp. biomass

2013 ◽  
Vol 129 ◽  
pp. 219-223 ◽  
Author(s):  
C. González-Fernández ◽  
B. Sialve ◽  
N. Bernet ◽  
J.P. Steyer
Keyword(s):  
Anaerobic Digestion ◽  
Loading Rate ◽  
Organic Loading Rate ◽  
Organic Loading

Drivers of microbial community composition in mesophilic and thermophilic temperature-phased anaerobic digestion pre-treatment reactors

2013 ◽  
Vol 47 (19) ◽  
pp. 7098-7108 ◽  
Author(s):  
Hasina M. Pervin ◽  
Paul G. Dennis ◽  
Hui J. Lim ◽  
Gene W. Tyson ◽  
Damien J. Batstone ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Community Composition ◽  
Microbial Community Composition ◽  
Pre Treatment

scholarly journals The feasibility of trace element supplementation for stable operation of wheat stillage-fed biogas tank reactors

2011 ◽  
Vol 64 (2) ◽  
pp. 320-325 ◽  
Author(s):  
J. Gustavsson ◽  
B. H. Svensson ◽  
A. Karlsson
Keyword(s):  
Trace Element ◽  
Hydraulic Retention Time ◽  
Loading Rate ◽  
Biogas Production ◽  
Organic Loading Rate ◽  
Stable Operation ◽  
Organic Loading ◽  
Process Stability ◽  
Volatile Solids ◽  
High Sulfate

The aim of this study was to investigate the effect of trace element supplementation on operation of wheat stillage-fed biogas tank reactors. The stillage used was a residue from bio-ethanol production, containing high levels of sulfate. In biogas production, high sulfate content has been associated with poor process stability in terms of low methane production and accumulation of process intermediates. However, the results of the present study show that this problem can be overcome by trace element supplementations. Four lab-scale wheat stillage-fed biogas tank reactors were operated for 345 days at a hydraulic retention time of 20 days (37 °C). It was concluded that daily supplementation with Co (0.5 mg L−1), Ni (0.2 mg L−1) and Fe (0.5 g L−1) were required for maintaining process stability at the organic loading rate of 4.0 g volatile solids L−1 day−1.

Sign in / Sign up

Export Citation Format

Share Document