Retraction notice to “Comparison of Chemical and Biological Pretreatment of Corn Straw for Biogas Production by Anaerobic Digestion” [Renewable Energy (2011) 1875–1879]

2013 ◽  
Vol 51 ◽  
pp. 518 ◽  
Author(s):  
Weizhang Zhong ◽  
Zhongzhi Zhang ◽  
Wei Qiao ◽  
Pengcheng Fu ◽  
Man Liu
Keyword(s):  
Renewable Energy ◽  
Anaerobic Digestion ◽  
Biogas Production ◽  
Biological Pretreatment ◽  
Corn Straw ◽  
Retraction Notice

RETRACTED: Comparison of chemical and biological pretreatment of corn straw for biogas production by anaerobic digestion

2011 ◽  
Vol 36 (6) ◽  
pp. 1875-1879 ◽  
Author(s):  
Weizhang Zhong ◽  
Zhongzhi Zhang ◽  
Wei Qiao ◽  
Pengcheng Fu ◽  
Man Liu
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Biological Pretreatment ◽  
Corn Straw

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 Biological pretreatment of corn straw for enhancing degradation efficiency and biogas production

Bioengineered ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 251-260 ◽  
Author(s):  
Panpan Li ◽  
Chao He ◽  
Gang Li ◽  
Pan Ding ◽  
Mingming Lan ◽  
...  
Keyword(s):  
Biogas Production ◽  
Degradation Efficiency ◽  
Biological Pretreatment ◽  
Corn Straw

scholarly journals Effect of liquid digestate recirculation on biogas production and enzyme activities for anaerobic digestion of corn straw

2020 ◽  
Author(s):  
Shuaixing Xue ◽  
Ling Qiu ◽  
Xiaohui Guo ◽  
Yiqing Yao
Keyword(s):  
Anaerobic Digestion ◽  
Enzyme Activities ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Coenzyme F420 ◽  
Total Volatile ◽  
Corn Straw ◽  
Liquid Digestate ◽  
Acid Accumulation ◽  
Peak Value

Abstract To accelerate the degradation of substrate, 50% liquid digestate recirculation (LDR) was used in the anaerobic digestion (AD) of corn straw. The effects of recirculation on the enzyme activities and biogas production were investigated by comparing with control reactor (ReactorCK). During the AD process, the fermentation system with 50% LDR was more stable. The average biogas and methane production in ReactorLDR were 7,891 mL·d−1 and 347 mL CH4·g−1 VSadded·d−1 respectively. The total volatile fatty acids (TVFAs) concentration in the two reactors both increased at first and then decreased with time. The LDR made the VFAs accumulation significant, especially propionic acid accumulation in 4 ∼ 16 days. The maximum peak value of cellulase, xylanase, dehydrogenase and coenzyme F420 activities in ReactorLDR were 0.51 mg·g−1·h−1, 0.29 mg·g−1·h−1, 4.88 mL·g−1·h−1 and 6.69 μmol·L−1, respectively, which were higher than that in ReactorCK. With or without recirculation, the concentration of TVFAs was positively correlated with cellulase, xylanase and dehydrogenase activities, while was negatively correlated with coenzyme F420 activity. Besides, a very significant correlation existed between hydrolase and dehydrogenase activities and daily biogas production in ReactorCK. And the peaks of cellulase, xylanase and dehydrogenase activities appeared ahead of the peak of daily biogas production with the LDR.

scholarly journals Promotion of Biogasification Efficiency by Pretreatment and Bioaugmentation of Corn Straw with Microbial Consortium

2019 ◽  
Vol 118 ◽  
pp. 01032
Author(s):  
Qili Zhu ◽  
Yanwei Wang ◽  
Furong Tan ◽  
Bo Wu ◽  
Lichun Dai ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Surface Structure ◽  
Degradation Rate ◽  
Microbial Consortium ◽  
Biogas Production ◽  
Cellulose Degradation ◽  
Cellulase Activity ◽  
Corn Straw ◽  
Structure Characteristics ◽  
Anaerobic Microbial Consortium

To better understand the comparative effects between pretreatment and bioaugmentation methods on the promotion of corn straw biogasification efficiency, we analysed the cellulase activity, cellulose degradation rate, surface structure characteristics, and biogas production of corn straw that had been pretreated with aerobic microbial consortium (AMC). In addition, we also studied the effect of bioaugmentation using anaerobic microbial consortium (ANMC) on corn straw biogasification efficiency. The results from our study demonstrated that the cumulative methane generated from AMC and ANMC were 233.09 mL·g-1 VS and 242.56 mL·g-1 VS, which was increased compared to the control by 6.89% and 11.23%, respectively. We also observed that ANMC could also function to dramatically promote methane content during the anaerobic digestion of corn straw. This study demonstrated that AMC and ANMC were both able to promote the biogasification efficiency of corn straw, however, ANMC was found to perform better compared to AMC.

Effect of a Cellulose-Degrading Strain on Anaerobic Fermentation of Corn Straw

2011 ◽  
Vol 356-360 ◽  
pp. 2510-2514 ◽  
Author(s):  
Ming Fen Niu ◽  
Sai Yue Wang ◽  
Wen Di Xu ◽  
An Dong Ge ◽  
Hao Wang
Keyword(s):  
Fatty Acids ◽  
Anaerobic Digestion ◽  
Methane Production ◽  
Volatile Fatty Acids ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Corn Straw ◽  
High Efficient ◽  
Important Significance ◽  
Strong Capacity

In order to improve the rate of degradation of cellulose in corn straw, the study has an important significance that compost corn straw with inoculating high-efficient microbe agents. The experiment inoculated a cellulose-degrading strain F2 which was screened from compost into compost pretreatment, the VS of corn straw reduced from 93.14% to 71.69% after 15 days, the content of cellulose reduced from 34.12g·kg-1 to 25.66g·kg-1, the rate of degradation was 24.79% which was 10.60% higher than those without the strain. An anaerobic fermentation experiment was carried out with the two groups of composted corn straw and mixed pig feces with a certain ratio, and investigations of biogas production, pH, content of volatile fatty acids(VFA) and rate of methane production were conducted. The results were that the corn straw composted with the cellulose-degrading strain peaked 4 days earlier, the maximal daily biogas production was 1470mL, the cumulative biogas production reached 23641mL which was 16.87% higher and operated stably earlier. The study showed that the cellulose-degrading strain had a strong capacity to degrade cellulose in corn straw, and then improved the performance of anaerobic digestion.

Estimation of Biogas Production from Shrimp Pond Sediment Using the Artificial Intelligence

2012 ◽  
Vol 260-261 ◽  
pp. 695-700
Author(s):  
J. Srisertpol ◽  
P. Srinakorn ◽  
A. Kheawnak ◽  
K. Chamniprasart
Keyword(s):  
Renewable Energy ◽  
Anaerobic Digestion ◽  
Flow Rate ◽  
Environmental Planning ◽  
Biogas Production ◽  
Biochemical Properties ◽  
Shrimp Pond ◽  
Pond Sediment ◽  
Balance Principle ◽  
The Mathematical Model

A biogas production development increases renewable energy and reduces the environmental impact which is caused by carbon dioxide. Thisis important for energy and environmental planning in Thailand. The biogas production by anaerobic digestionproduces methane that can be used as renewable energy. This research was to study biogas production from the anaerobic digestion of shrimp pond sediment by the batch reaction, an estimation of the mathematical model using theArtificial Intelligence (AI) technique and the treatment of shrimp pond sediment.The mass balance principle to create mathematical modeling and decompositions of organic matter into biogas were used to compare the experimental dataincluding, temperature, pH, biogas flow rate and biochemical properties of the shrimp pond sediment. From the results, mathematical models can estimate the dynamic response of the biogas flow rate and factors that affectedthe biogas productions. The treatment of shrimp pond sediment by anaerobic digestion process could reduce TS, TDS, TSS, TVS, BOD, COD and ECby81-89%, 52-60%, 95-99%, 80-89%, 86-95% , 85-95% and 12-22 % respectively.

scholarly journals Biological And Thermal Pretreatment Of Lignocellulosic Materials For Enhanced Biogas Production

2021 ◽  
Author(s):  
Samer Dahahda
Keyword(s):  
Anaerobic Digestion ◽  
Organic Material ◽  
Fossil Fuels ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Current Status ◽  
Lignocellulosic Materials ◽  
Thermal Pretreatment ◽  
Biological Pretreatment ◽  
Biogas Yield

The rapid depletion of natural resources and the environmental concerns associated with the use of fossil fuels as the main source of global energy is leading to an increased interest in alternative and renewable energy sources. Lignocellulosic biomass is the most abundant source of organic materials that can be utilized as an energy source. Anaerobic digestion has been proven to be an effective technology for converting organic material into energy products such as biogas. However, the nature of lignocellulosic materials hinders the ability of microorganisms in an anaerobic digestion process to degrade and convert organic material to biogas. Therefore, a pretreatment step is necessary to improve the degradability of lignocellulosic materials and achieve higher biogas yield. Several pretreatment methods have been studied over the past few years including physical, thermal, chemical and biological pretreatment. This paper reviews biological and thermal pretreatment as two main promising methods used to improve biogas production from lignocelluloses. A greater focus is given on enzymatic pretreatment which is one of the promising yet under-researched biological pretreatment method. The paper addresses challenges in degrading lignocellulosic materials and the current status of research to improve biogas yield from lignocelluloses through biological and thermal pretreatment.

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