Research Progress of Iron-Based Catalysts in Ozonation Wastewater Treatment

ACS ES&T Water, Journal Year: 2023, Volume and Issue: 3(4), P. 908 - 922

Published: March 13, 2023

On account of the rich contents iron-based catalysts, low preparation costs, and good effects, they play important roles in various fields water treatment. There are many kinds iron oxides, which have been employed catalytic ozone oxidation processes. However, a thorough analysis their syntheses, characterization techniques, reactions affecting variables, mechanistic applications is lacking sector. It necessary to search for efficiencies different types catalysts system elucidate activation mechanisms hydroxyl radicals by catalysts. In this paper, synthesis methods, practical application summarized detail. The performances explored. effects solution pH, reaction temperature, catalyst addition amount, concentration, inorganic anions on degradations organic pollutants stability an catalyst/oxidant also discussed. free removal catalyst/ozone revealed detection method, technology, theoretical analysis. potential applications, auxiliary technologies, influences catalysis prospected.

Language: Английский

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Temperature‐mediated microbial carbon utilization in China's lakes

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(17), P. 5044 - 5061

Published: July 10, 2023

Microbes play an important role in aquatic carbon cycling but we have a limited understanding of their functional responses to changes temperature across large geographic areas. Here, explored how microbial communities utilized different substrates and the underlying ecological mechanisms along space-for-time substitution gradient future climate change. The included 47 lakes from five major lake regions China spanning difference nearly 15°C mean annual temperatures (MAT). Our results indicated that warmer generally had lower values variables related concentrations greater utilization than those colder regions. under higher could be attributed bacterial community composition, with abundance Cyanobacteria Actinobacteriota less Proteobacteria We also found core species networks changed increasing temperature, Hydrogenophaga Rhodobacteraceae, which inhibited amino acids carbohydrates, CL500-29-marine-group, promoted all almost substrates. Overall, our findings suggest can mediate by changing interactions between bacteria individual substrates, discovery affect provides insight into potential sequestration within inland water bodies warming.

Language: Английский

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Illuminating plant–microbe interaction: How photoperiod affects rhizosphere and pollutant removal in constructed wetland?

Environment International, Journal Year: 2023, Volume and Issue: 179, P. 108144 - 108144

Published: Aug. 12, 2023

Rhizosphere is a crucial area in comprehending the interaction between plants and microorganisms constructed wetlands (CWs). However, influence of photoperiod, key factor that regulates photosynthesis rhizosphere microbial activity, remains largely unknown. This study investigated effect photoperiod (9, 12, 15 hours/day) on pollutant removal underlying mechanisms. Results showed 15-hour treatment exhibited highest efficiencies for COD (87.26%), TN (63.32%), NO3--N (97.79%). enhanced photosynthetic pigmentation root which increased transport oxygen soluble organic carbon to rhizosphere, thus promoting nitrification denitrification. Microbial community analysis revealed more stable co-occurrence network due complexity aggregation treatment. Phaselicystis was identified as connector, responsible transferring necessary sources, ATP, electron donors supported optimized nitrogen metabolism CWs. Structural equation model emphasized importance plant-microbe interactions through substance, information, energy exchange. These findings offer valuable insights CWs design operation various latitudes rural areas small-scale decentralized systems.

Language: Английский

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Spatiotemporal dynamics of root exudates drive microbial adaptation mechanisms under day-night alterations in constructed wetlands

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 477, P. 147311 - 147311

Published: Nov. 11, 2023

Language: Английский

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Towards the carbon neutrality of sludge treatment and disposal in China: A nationwide analysis based on life cycle assessment and scenario discovery

Environment International, Journal Year: 2023, Volume and Issue: 174, P. 107927 - 107927

Published: April 1, 2023

Motivated by the carbon neutrality target, strategic planning for a low-carbon transition of sludge treatment and disposal in China is challenging due to unpredictability technical, regional, socioeconomic, political factors affecting greenhouse gas (GHG) emissions. This study combines use Life Cycle Assessment Patient Rule Induction Method, accounting possibilities that could achieve net-zero emissions exploring multiple plausible future profiles disposal. Results show reducing landfill increasing anaerobic digestion are effective methods facilitate GHG reduction. Achieving closely linked developing cleaner electricity mix. Based on cascaded scenario analysis considering regional differences 31 Chinese provinces, results demonstrated maximum cumulative reduction potential 371 Mt CO2 equivalents from 2020 2050, equal 59.84% business-as-usual scenario. Together with reductions, terrestrial acidification ecotoxicity as well freshwater synergistically reduced. However, shifting environmental burden eutrophication, human toxicity, marine ecotoxicity, photochemical oxidant formation. presents novel method systematically identifying possible development paths toward neutrality. The findings may support policy designs achieving target effects

Language: Английский

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Spatial gradients and molecular transformations of DOM, DON and DOS in human-impacted estuarine sediments

Environment International, Journal Year: 2024, Volume and Issue: 185, P. 108518 - 108518

Published: Feb. 23, 2024

Dissolved organic matter (DOM) constitutes the most active fraction in global carbon pools, with estuarine sediments serving as significant repositories, where DOM is susceptible to dynamic transformations. Anthropogenic nitrogen (N) and sulfur (S) inputs further complicate by creating N-bearing (DON) S-bearing (DOS). This study delves into spatial gradients transformation mechanisms of DOM, DON, DOS Pearl River Estuary (PRE) sediments, China, using combined techniques UV-visible spectroscopy, Excitation-emission matrix (EEM) fluorescence Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), microbial high-throughput sequencing. Results uncovered a distinct gradient concentration, aromaticity (SUV

Language: Английский

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A study on microbial mechanism in response to different nano-plastics concentrations in constructed wetland and its carbon footprints analysis

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 480, P. 148023 - 148023

Published: Dec. 11, 2023

Language: Английский

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Succession dynamics of microbial communities responding to the exogenous microalgae ZM-5 and analysis of the environmental sustainability of a constructed wetland system

Bioresource Technology, Journal Year: 2023, Volume and Issue: 371, P. 128642 - 128642

Published: Jan. 18, 2023

Language: Английский

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A Novel Estrone Degradation Gene Cluster and Catabolic Mechanism in Microbacterium oxydans ML-6

Applied and Environmental Microbiology, Journal Year: 2023, Volume and Issue: 89(3)

Published: Feb. 27, 2023

Steroidal estrogens (SEs) are mainly produced by animals, while bacteria major consumers of SEs in the biosphere. However, understanding gene clusters that participate E1 degradation is still limited, and enzymes involved biodegradation have not been well characterized.

Language: Английский

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A review on constructed wetlands for environmental and emerging contaminants removal from wastewater: traditional and recent developments

Environment Development and Sustainability, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 27, 2023

Language: Английский

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