Accelerated performance recovery of anaerobic granular sludge after temperature shock: Rapid construction of protective barriers (EPS) to optimize microbial community composition base on quorum sensing

Journal of Cleaner Production, Год журнала: 2023, Номер 392, С. 136243 - 136243

Опубликована: Янв. 31, 2023

Язык: Английский

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Vanadate Bio-Detoxification Driven by Pyrrhotite with Secondary Mineral Formation

Environmental Science & Technology, Год журнала: 2023, Номер 57(4), С. 1807 - 1818

Опубликована: Янв. 4, 2023

Vanadium(V) is a redox-sensitive heavy-metal contaminant whose environmental mobility strongly influenced by pyrrhotite, widely distributed iron sulfide mineral. However, relatively little known about microbially mediated vanadate [V(V)] reduction characteristics driven pyrrhotite and concomitant mineral dynamics in this process. This study demonstrated efficient V(V) bioreduction during 210 d of operation, with lifespan 10 times longer than abiotic control, especially stable period when the removal efficiency reached 44.1 ± 13.8%. Pyrrhotite oxidation coupled to could be achieved an enriched single autotroph (e.g., Thiobacillus Thermomonas) independently. Autotrophs Sulfurifustis) gained energy from synthesize organic intermediates, which were utilized heterotrophic reducing bacteria such as Anaerolinea, Bacillus, Pseudomonas sustain reduction. was reduced insoluble tetravalent V, while mainly produced Fe(III) SO42–. Secondary minerals including mackinawite (FeS) greigite (Fe3S4) synchronously, resulting further transformations SO42– sulfate Desulfatiglans) magnetotactic Nitrospira). provides new insights into biogeochemical behavior V under effects reveals previously overlooked mineralogical bioprocesses Fe(II)-bearing minerals.

Язык: Английский

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Zero-valent iron enhanced methane production of anaerobic digestion by reinforcing microbial electron bifurcation coupled with direct inter-species electron transfer

Water Research, Год журнала: 2024, Номер 255, С. 121428 - 121428

Опубликована: Март 5, 2024

Язык: Английский

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Synergic role of ferrate and nitrite for triggering waste activated sludge solubilisation and acidogenic fermentation: Effectiveness evaluation and mechanism elucidation

Water Research, Год журнала: 2022, Номер 226, С. 119287 - 119287

Опубликована: Окт. 22, 2022

Язык: Английский

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Improvement of anaerobic digestion containing sulfur with conductive materials: Focusing on recent advances and internal biological mechanisms

Chemical Engineering Journal, Год журнала: 2023, Номер 472, С. 144867 - 144867

Опубликована: Июль 17, 2023

Язык: Английский

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Electronic Bifurcation: A New Perspective on Fe Bio-Utilization in Anaerobic Digestion of Lactate

Environmental Science & Technology, Год журнала: 2023, Номер 57(28), С. 10448 - 10457

Опубликована: Июль 7, 2023

Anaerobic microorganisms use flavin/quinone-based electronic bifurcation (EB) to gain a survival advantage at the thermodynamic limits. However, contribution of EB microscopic energy and productivity in anaerobic digestion (AD) system is unknown. This study demonstrates for first time that under limited substrate conditions, Fe-driven AD leads 40% increase specific methane production contributes 25% ATP accumulation, by analyzing concentration enzymes such as Etf–Ldh, HdrA2B2C2, Fd, NADH actual Gibbs free-energy changes. Differential pulse voltammetry electron respiratory chain inhibition experiments detected iron enhanced transport accelerating activity flavin, Fe–S clusters, quinone groups. Other microbial enzyme genes with potential closely related have also been found metagenomes. The accumulate enhance systems was investigated, metabolic pathways were proposed study.

Язык: Английский

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Rapid start-up sulfur-driven autotrophic denitrification granular process: Extracellular electron transfer pathways and microbial community evolution

Bioresource Technology, Год журнала: 2024, Номер 395, С. 130331 - 130331

Опубликована: Янв. 17, 2024

Язык: Английский

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Review on intensified treatment of refractory wastewater in anaerobic digestion based on extracellular electron transfer: Mechanisms, strategies, and applications

Chemical Engineering Journal, Год журнала: 2024, Номер 489, С. 151456 - 151456

Опубликована: Апрель 18, 2024

Язык: Английский

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Deciphering the role of extracellular polymeric substances in the adsorption and biotransformation of organic micropollutants during anaerobic wastewater treatment

Water Research, Год журнала: 2024, Номер 257, С. 121718 - 121718

Опубликована: Май 3, 2024

Язык: Английский

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Glycine betaine modulates extracellular polymeric substances to enhance microbial salinity tolerance

Environmental Science and Ecotechnology, Год журнала: 2024, Номер 20, С. 100406 - 100406

Опубликована: Март 1, 2024

High salinity inhibits microbial activity in the bioremediation of saline wastewater. To alleviate osmotic stress, glycine betaine (GB), an osmoprotectant, is added to enhance secretion extracellular polymeric substances (EPS). These EPS are pivotal withstanding environmental stressors, yet intricate interplay between GB supplementation and responses through modifications—encompassing composition, molecular architecture, electrochemical features—remains elusive hypersaline conditions. Here we show strategies for endurance by investigating impact on dynamic alterations properties. Our findings reveal that at 3.5% elevates total (T-EPS) content from 12.50 ± 0.05 24.58 0.96 mg/g dry cell weight. The observed shift zeta potential −28.95 −6.25 mV 0% salinity, respectively, with treatment, indicates a reduction electrostatic repulsion compaction. Notably, protein secondary structure transition β-sheet α-helix, addition, signifies more compact configuration, less susceptible fluctuations. Electrochemical analyses, including cyclic voltammetry (CV) differential pulse (DPV), GB's role promoting release exogenous electron shuttles, such as flavins c-type cytochromes (c-Cyts). enhancement DPV peak areas (QDPV) addition implies increase available transfer sites. This investigation advances our comprehension adaptation mechanisms modifications facilitated habitats.

Язык: Английский

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