Lumen air pressure regulated multifunctional microbiotas in membrane-aerated biofilm reactors for simultaneous nitrogen removal and antibiotic elimination from aquaculture wastewater

Water Research, Journal Year: 2024, Volume and Issue: 251, P. 121102 - 121102

Published: Jan. 6, 2024

Language: Английский

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Microbial Roles in Dissolved Organic Matter Transformation in Full-Scale Wastewater Treatment Processes Revealed by Reactomics and Comparative Genomics

Environmental Science & Technology, Journal Year: 2021, Volume and Issue: 55(16), P. 11294 - 11307

Published: Aug. 2, 2021

Understanding the degradation of dissolved organic matter (DOM) is vital for optimizing DOM control. However, microbe-mediated transformation during wastewater treatment remains poorly characterized. Here, microbes and along full-scale biotreatment processes were simultaneously characterized using comparative genomics high-resolution mass spectrometry-based reactomics. Biotreatments significantly increased DOM's aromaticity unsaturation due to overproduced lignin polyphenol analogs. was diversified by over five times in richness, with thousands nitrogenous sulfur-containing compounds generated through oxidoreduction, functional group transfer, C–N C–S bond formation. Network analysis demonstrated microbial division labor transformation. their roles determined traits rather than taxa. Specifically, network module hubs exhibited rapid growth potentials broad substrate affinities but deficient xenobiotics-metabolism-associated genes. They mainly correlated liable consumption its recalcitrant compounds. In contrast, connectors peripherals potential degraders slow growth. showed specialized associations fewer molecules probably fed on metabolites hub microbes. Thus, developing technologies (e.g., carriers) selectively enrich peripheral consequently decouple may advance removal.

Language: Английский

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The potential of mixed-species biofilms to address remaining challenges for economically-feasible microalgal biorefineries: A review

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 451, P. 138481 - 138481

Published: Aug. 4, 2022

Several key challenges are hindering large-scale cultivation of microalgae for industrial purposes, including wastewater treatment, carbon capture, biomass production, and renewable energy production. These closely related to efficacy 1) resource utilization, 2) 3) harvesting. This review describes how attached or biofilm and/or cyanobacteria with heterotrophic bacteria in consortia could simultaneously resolve these technical obstacles, thereby reducing monetary energetic costs producing microalgal bioenergy. Symbiotic relationships between organisms reduces the need aeration exogenous supplementation nutrients. Additionally, this details increasing biodiversity correlates diversity functionality (carbon capture nitrification) attached/biofilm can improve photosynthetic efficiency water footprint. Mixed-species biofilms have persisted billions years across earth's natural history because they some nature's most highly efficient biosystems, deserve more dedicated study broader application bioenergy practical connections microalgal-bacterial consortia, cultivation, waste-to-value biorefining, relevance production value-added products (VAPs); four topics previously unconnected a single review. As such aims bridge current knowledge gaps multiple research fields sectors, towards goal efficient, economical, climate-forward bio-services

Language: Английский

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Fight for carbon neutrality with state-of-the-art negative carbon emission technologies

Eco-Environment & Health, Journal Year: 2022, Volume and Issue: 1(4), P. 259 - 279

Published: Dec. 1, 2022

After the Industrial Revolution, ever-increasing atmospheric CO2 concentration has resulted in significant problems for human beings. Nearly all countries world are actively taking measures to fight carbon neutrality. In recent years, negative emission technologies have attracted much attention due their ability reduce or recycle excess atmosphere. This review summarizes state-of-the-art technologies, from artificial enhancement of natural sink technology physical, chemical, biological methods capture, as well utilization and conversion. Finally, we expound on challenges outlook improving accelerate pace achieving

Language: Английский

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Biofilm bioactivity affects nitrogen metabolism in a push-flow microalgae-bacteria biofilm reactor during aeration-free greywater treatment

Water Research, Journal Year: 2023, Volume and Issue: 244, P. 120461 - 120461

Published: Aug. 13, 2023

Language: Английский

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Microplastics degradation stimulated by in-situ bioelectric field in agricultural soils

Environment International, Journal Year: 2023, Volume and Issue: 177, P. 108035 - 108035

Published: June 13, 2023

Bioelectric field is a stimulated force to degrade xenobiotic pollutants in soils. However, the effect of bioelectric on microplastics (MPs) aging unclear. The degradation behavior polyvinyl chloride (PVC), polyethylene (PE) and polylactic acid (PLA) was investigated an agricultural soil microbial electrochemical system which generated in-situ by native microbes. Based density function theory, energy gaps between highest lowest occupied molecular orbitals three polymers with periodic structure were 4.20, 7.24 10.09 eV respectively, further decreased under electric field, indicating higher hydrolysis potential PLA. Meanwhile, mass loss PLA closed-circuit group (CC) day 120, reaching 8.94%, 3.01-3.54 times that without stimulation. This mainly due enrichment plastic-degrading bacteria robust co-occurrence network as deterministic assembly process, e.g., abundance surface PVC CC increased 1.92 1.30 times, compared open-circuit group. In terms functional genes, biodegradation metabolism capacity plasticsphere stronger than soil, determined bioaccessibility nitrogen carbon. Overall, this study explored promoting MPs reveled mechanism from quantum chemical calculations community analysis, provides novel perception MPs.

Language: Английский

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How nutrient loading leads to alternative stable states in microbially mediated N-cycle pathways: A new insight into bioavailable nitrogen removal in urban rivers

Water Research, Journal Year: 2023, Volume and Issue: 236, P. 119938 - 119938

Published: April 6, 2023

Language: Английский

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Bidirectional Enhancement of Nitrogen Removal by Indigenous Synergetic Microalgal–Bacterial Consortia in Harsh Low-C/N Wastewater

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(12), P. 5394 - 5404

Published: March 11, 2024

Conventional microalgal–bacterial consortia have limited capacity to treat low-C/N wastewater due carbon limitation and single nitrogen (N) removal mode. In this work, indigenous synergetic with high N performance bidirectional interaction were successful in treating rare earth tailing wastewaters low-C/N. Ammonia reached 0.89 mg L–1 h–1, 1.84-fold more efficient than a common system. Metagenomics-based metabolic reconstruction revealed interactions. The presence of microalgae increased the abundance bacterial N-related genes by 1.5- 57-fold. Similarly, bacteria microalgal assimilation 2.5- 15.8-fold. Furthermore, nine species isolated, promotion system was verified. mechanism enhanced indole-3-acetic acid revealed. addition, mode ensured scavenging toxic byproducts from nitrate metabolism maintain stability Collectively, enhancement microalgae-bacteria established as an effective strategy broaden stable application for treatment low C/N ratio wastewater.

Language: Английский

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Toward nitrogen recovery: Co-cultivation of microalgae and bacteria enhances the production of high-value nitrogen-rich cyanophycin

Water Research, Journal Year: 2024, Volume and Issue: 256, P. 121624 - 121624

Published: April 15, 2024

Language: Английский

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Microbial transformation of sulfur-containing dissolved organic matter in the intertidal zone of a mountainous river estuary responding to tidal fluctuation

Environmental Research, Journal Year: 2025, Volume and Issue: 274, P. 121363 - 121363

Published: March 9, 2025

Language: Английский

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