Bioaugmentation technology for improving the performance of thermophilic anaerobic digestion (TAD) of food waste (FW) treatment is gaining more attention. In this study, four thermophilic strains (Ureibacillus suwonensis E11, Clostridium thermopalmarium HK1, Bacillus thermoamylovorans Y25 and Caldibacillus thermoamylovorans QK5) were inoculated in the TAD of FW system, and the biochemical methane potential (BMP) batch study was conducted to assess the potential of different bioaugmented strains to enhance methane production. The results showed that the cumulative methane production in groups inoculated with E11, HK1, Y25 and QK5 improved by 2.05%, 14.54%, 19.79% and 9.17%, respectively, compared with the control group with no inoculation. Moreover, microbial community composition analysis indicated that the relative abundance of the main hydrolytic bacteria and/or methanogenic archaea was increased after bioaugmentation, and the four strains successfully became representative bacterial biomarkers in each group. The four strains enhanced methane production by strengthening starch, sucrose, galactose, pyruvate and methane metabolism functions. Further, the correlation networks demonstrated that the representative bacterial genera had positive correlations with the differential metabolic functions in each bioaugmentation group. This study provides new insights into the TAD of FW with bioaugmented strains.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.envres.2023.118031 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Foliar application of nano biochar solution elevates tomato productivity by counteracting the effect of salt stress insights into morphological physiological and biochemical indices.
Sci Rep
January 2025
Department of Biochemistry, College of Science, King Saud University, P.O.Box 2455, Riyadh, 11451, Saudi Arabia.
Nano-biochar considers a versatile and valuable sorbent to enhance plant productivity by improving soil environment and emerged as a novel solution for environmental remediation and sustainable agriculture in modern era. In this study, roles of foliar applied nanobiochar colloidal solution (NBS) on salt stressed tomato plants were investigated. For this purpose, NBS was applied (0%, 1% 3% and 5%) on two groups of plants (control 0 mM and salt stress 60 mM).
View Article and Find Full Text PDFMechanism of microscopic behind the influence of stress loading on gas adsorption by coal.
Sci Rep
January 2025
College of Environment and Bioengineering, Henan University of Engineering, Zhengzhou, 451191, China.
This study aims to explore the mechanism behind the influence of stress on gas adsorption by coal during deep mining and improve the accuracy of gas disaster prevention and control. To achieve this aim, thermodynamic analysis was conducted on the process of gas adsorption by loaded coal, and modified thermodynamic model proposed by previous scholars. It is found that stress plays an important role in gas adsorption by coal.
View Article and Find Full Text PDFPlant root carbon inputs drive methane production in tropical peatlands.
Sci Rep
January 2025
School of Biosciences, University of Nottingham, Sutton Bonington, LE12 5RD, UK.
Tropical peatlands are carbon-dense ecosystems that are significant sources of atmospheric methane (CH). Recent work has demonstrated the importance of trees as an emission pathway for CH from the peat to the atmosphere. However, there remain questions over the processes of CH production in these systems and how they relate to substrate supply.
View Article and Find Full Text PDFMethanotrophic and heterotrophic co-cultures for the Polyhydroxybutyrate production by co-utilizing C1 and C3 gaseous substrates.
Bioresour Technol
January 2025
Department of Chemical Engineering (BK21 FOUR Integrated Engineering), Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea. Electronic address:
Polyhydroxybutyrate (PHB) production using methanotrophs offers an economical solution to counter increasing environmental pollution. However, the substrate specificity of methanotrophs limits their ability to use multiple gases for chemical production. In this study, a synthetic heterotrophic and methanotrophic co-culture system was developed to co-utilize methane and propane for PHB production.
View Article and Find Full Text PDFThe role of sulfidated zero-valent iron in enhancing anaerobic digestion of waste activated sludge.
J Environ Manage
January 2025
Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou, 510006, China; Institute of Science and Technology Innovation Co., Ltd., South China Normal University, Qingyuan, 511517, China. Electronic address:
Zero-valent iron (ZVI) has been confirmed in enhancing methane production by improving interspecies electron transfer during anaerobic digestion (AD) of waste activated sludge (WAS). In this study, we suppose that sulfidated zero-valent iron (S-ZVI), a semiconductor material, has better property of electron transfer in AD process. Based on two-phase anaerobic digestion process, nitrite and S-ZVI were used separately for improving acidogenic phase and methanogenic phase of anaerobic sludge digestion.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!