Metagenomic Analysis Reveals the Effects of Microplastics on Antibiotic Resistance Genes in Sludge Anaerobic Digestion DOI Creative Commons

Zhonghong Li,

Donghai Yuan

Toxics, Journal Year: 2024, Volume and Issue: 12(12), P. 920 - 920

Published: Dec. 19, 2024

Sewage sludge is recognized as both a source and reservoir for antibiotic resistance genes (ARGs). Within an anaerobic digestion (AD) system, the presence of microplastics (MPs) has been observed to potentially facilitate proliferation these ARGs. Understanding influence MPs on microbial behavior horizontal gene transfer (HGT) within AD system crucial effectively managing dissemination ARGs in environment. This study utilized metagenomic approaches analyze dynamics various types potential mechanisms under exposure during process. The findings indicated that process can enhance ARGs, with extent this enhancement increasing dosage MPs: polyethylene (PE), terephthalate (PET), polylactic acid (PLA) increased abundance by up 29.90%, 18.64%, 14.15%, respectively. Additionally, relative mobile genetic elements (MGEs) Network correlation analysis further revealed plasmids represent predominant category MGEs involved HGT Propionibacterium Alicycliphilus were identified primary hosts results function annotation led related production reactive oxygen species (ROS), alterations membrane permeability, ATP synthesis, secretion extracellular polymeric substances (EPS). These play roles influencing

Language: Английский

Influence of micro-aeration in the production of volatile fatty acids (VFA) from wastewaters with high salinity DOI Creative Commons
M. Salomé Duarte,

Ricardo J.C. Fernandes,

José Paulo Sousa

et al.

Fuel, Journal Year: 2024, Volume and Issue: 375, P. 132566 - 132566

Published: July 24, 2024

Waste management and valorization are seen as pivotal drivers for adopting a circular economy. The production of volatile fatty acids (VFA) through anaerobic digestion (AD) fits perfectly into these emerging social industrial dynamics, being the VFA considered valuable products, namely in chemical industries. Therefore, this work focuses on AD, using wastes wastewaters, with high salinity content (20 g/L) continuous bioreactors. effect micro-aeration during acidogenesis high-salinity wastes/wastewaters was accessed more than 500 days, divided 5 main periods, by analysing different physicochemical parameters like oxidation–reduction potential (ORP), salinity, pH, COD, profile. Sludge properties were also analysed quantitative image analysis (QIA) integrating Principal Component Analysis (PCA). results demonstrate that does not appear limiting factor, soluble COD (30 constant operation time both reactors, well VFA/sCOD ratio (60 % − 80 %). Due to micro-aeration, differences between anoxic (R1) microaerophilic (R2) reactors observed, second one presenting lower value ORP some periods assay. This indicates presence aerobic or facultative microorganisms, which have consumed oxygen. Also, higher concentrations hexanoate reactor obtained those periods. application QIA combined PCA has revealed significantly impacts morphology size aggregates.

Language: Английский

Citations

4
Air nanobubble simultaneously enhances hydrolysis and methane yield of sludge temperature phased-anaerobic digestion DOI
Ziying Xu, Tianfeng Wang, Cheng Peng

et al.

Bioresource Technology, Journal Year: 2025, Volume and Issue: 419, P. 132084 - 132084

Published: Jan. 15, 2025

Language: Английский

Citations

0
Unveiling molecular DOM reactomics and transformation coupled with multifunctional nanocomposites under anaerobic conditions: Tracking potential metabolomics and pathways DOI
Manal Ali, Jibao Liu, Eunsang Kwon

et al.

Chemosphere, Journal Year: 2025, Volume and Issue: 372, P. 144111 - 144111

Published: Jan. 20, 2025

Language: Английский

Citations

0
Use of Nanobubbles to Improve Mass Transfer in Bioprocesses DOI Open Access
Javier Silva,

Laura Arias-Torres,

Carlos Carlesi

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(6), P. 1227 - 1227

Published: June 15, 2024

Nanobubble technology has emerged as a transformative approach in bioprocessing, significantly enhancing mass-transfer efficiency for effective microbial activity. Characterized by their nanometric size and high internal pressure, nanobubbles possess distinct properties such prolonged stability minimal rise velocities, allowing them to remain suspended liquid media extended periods. These features are particularly beneficial bioprocesses involving aerobic strains, where they help overcome common obstacles, increased culture viscosity diffusion limitations, that traditionally impede efficient mass transfer. For instance, an experimental setup, nanobubble aeration achieved 10% higher soluble chemical oxygen demand (sCOD) removal compared traditional methods. Additionally, nanobubble-aerated systems demonstrated 55.03% increase caproic acid concentration when supplemented with air water, reaching up 15.10 g/L. results underscore the potential of optimizing bioprocess sustainability. This review delineates important role coefficient (kL) evaluating these interactions underscores significance improving efficiency. The integration bioprocessing not only improves gas exchange substrate utilization but also bolsters growth metabolic performance. improve biotechnological applications is supported emerging research. However, fully leverage benefits, it essential conduct further empirical studies specifically assess impacts on efficacy scalability. Such research will provide necessary data validate practical identify any limitations need be addressed industrial settings.

Language: Английский

Citations

3
Advances in Biorefinery of Cattle Manure for Value-Added Products DOI Creative Commons
Wachiranon Chuenchart, Amit Prasad Timilsina,

Jayle Ge

et al.

Fermentation, Journal Year: 2024, Volume and Issue: 10(11), P. 568 - 568

Published: Nov. 7, 2024

A large amount of cattle manure is generated in the US every year, creating challenges for ecosystem sustainability while offering opportunities value-added products through biorefinery. While methods like land application, composting, and anaerobic digestion are well established treating manure, advanced biorefinery technologies needed to enhance utilization or its digestate. Based on composition this review discusses digestate, including recovery fiber protein, production platform chemicals, such as volatile fatty acids, lactic acid, medium-chain carboxylic ethanol, single-cell lipids. Additionally, process integration simultaneously producing multiple from using various technologies. By insights into different approaches, aims support development integrated processes, thereby improving economic environmental management.

Language: Английский

Citations

1
Metagenomic Analysis Reveals the Effects of Microplastics on Antibiotic Resistance Genes in Sludge Anaerobic Digestion DOI Creative Commons

Zhonghong Li,

Donghai Yuan

Toxics, Journal Year: 2024, Volume and Issue: 12(12), P. 920 - 920

Published: Dec. 19, 2024

Sewage sludge is recognized as both a source and reservoir for antibiotic resistance genes (ARGs). Within an anaerobic digestion (AD) system, the presence of microplastics (MPs) has been observed to potentially facilitate proliferation these ARGs. Understanding influence MPs on microbial behavior horizontal gene transfer (HGT) within AD system crucial effectively managing dissemination ARGs in environment. This study utilized metagenomic approaches analyze dynamics various types potential mechanisms under exposure during process. The findings indicated that process can enhance ARGs, with extent this enhancement increasing dosage MPs: polyethylene (PE), terephthalate (PET), polylactic acid (PLA) increased abundance by up 29.90%, 18.64%, 14.15%, respectively. Additionally, relative mobile genetic elements (MGEs) Network correlation analysis further revealed plasmids represent predominant category MGEs involved HGT Propionibacterium Alicycliphilus were identified primary hosts results function annotation led related production reactive oxygen species (ROS), alterations membrane permeability, ATP synthesis, secretion extracellular polymeric substances (EPS). These play roles influencing

Language: Английский

Citations

0