Fe/Co-modified Enteromorpha bio-hydrochar enhanced anaerobic digestion of chicken manure with sulfadimethazine: focusing on synergistic mechanism and microbial community succession

Biochar, Journal Year: 2024, Volume and Issue: 6(1)

Published: Nov. 11, 2024

Abstract Residual antibiotics in chicken manure may interfere with the stability of anaerobic digestion (AD) and inhibit resource utilization efficiency. In this study, we aimed to enhance bio-methanation AD high-concentration sulfamethazine (SMZ) by adding metal (Fe, Co)-modified Enteromorpha -based hydrochar (Co-HC, Fe-HC). The results showed that Fe-HC Co-HC increased degree acidogenesis 1.25 times 1.58 times, respectively. maximum protein concentration EPS was 47.64% 72.5% after Co-HC. However, only demonstrated notable improvements both methane production SMZ removal Electrochemical analysis possessed a richer variety oxygen nitrogen functional groups, along superior electron exchange capabilities compared Fe-HC. Furthermore, microbiological assessments revealed enriched syntrophic bacteria (such as Syntrophomonas Mesotoga ), facilitating direct interspecies transfer (DIET) subsequently enhancing biomethane production. abundance genes involved significantly Co-HC, increase 75.86% Co1.5-HC treatment. Additionally, elimination antibiotic resistance ( sul1 , sul2 ) 65.66% This study offers theoretical foundation empirical support for synergistic improvement livestock poultry containing high concentrations, thereby helping overcome challenges posed recalcitrant substances. Graphical

Language: Английский

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Enhanced Anaerobic Digestion Using Conductive Materials through Mediation of Direct Microbial Interspecies Electron Transfer: A Review

Fermentation, Journal Year: 2023, Volume and Issue: 9(10), P. 884 - 884

Published: Sept. 29, 2023

The anaerobic digestion (AD) of organic matter is susceptible to the challenges posed by low-speed electron transfer between microorganisms and limitation low hydrogen partial pressure, resulting in methane recovery efficiency poor system stability. Numerous studies recent years have shown that a variety conductive materials can significantly increase interspecies (IET) rate, optimize structure function microbial communities, improve yield, promote stability mediating direct (DIET) reciprocal microorganisms. In this study, on basis investigating IET mechanism methanogenic AD matter, effects carbon-based (activated carbon, biochar, carbon cloth, fiber, graphite, graphite felt, graphene, nanotubes) iron-based (magnetite, Fe3O4, hematite, Fe2O3, goethite, zero-valent iron) performance community using DIET are reviewed. Future research should focus establishing an evaluation system, identifying flora with potential, finding methods for engineering applications reveal principle mediate DIET.

Language: Английский

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Biochar facilitates biofuel production through batch single-stage and two-stage digestion of grass silage and cattle slurry

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 426, P. 139155 - 139155

Published: Sept. 30, 2023

Grass silage and cattle slurry are the most abundant feedstocks for biogas in an Irish context. This work describes how to optimize biomethane yield. Hydrolysis yields from co-digestion of grass were enhanced a biochar-supplemented two-stage digestion process. Biochar addition at optimal dosage 10 g/L batch digesters led highest methane yield 253 L per kilogram (kg) volatile solid (VS), which was 24% higher than that without biochar supplementation. For single-stage digester, lower but increase 218 L/kg VS as compared 198 group Volatile fatty acid accumulation increased with enhancement production reactors. The anaerobic presented positive effects on electrochemical properties digester contents, reflected by charge storage capacity, reduced solution resistance improved content conductivity. shown be strongly correlated (R2 = 0.92) concentration extracellular polymeric substances. evidenced interlaced conductive network established substances essential direct interspecies electron transfer production. study demonstrated is route energy recovery slurry.

Language: Английский

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Anaerobic digestion and biochar/hydrochar enhancement of antibiotic-containing wastewater: Current situation, mechanism and future prospects

Environmental Research, Journal Year: 2024, Volume and Issue: unknown, P. 120087 - 120087

Published: Oct. 1, 2024

Language: Английский

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Regulated synthesis of cobalt phosphide/biochar utilizing phytic acid: Biochar enhances anion co-catalysis of cobalt phosphides in persulfate activation

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 478, P. 147273 - 147273

Published: Nov. 16, 2023

Language: Английский

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