Unraveling the key driving factors involved in cometabolism enhanced aerobic degradation of tetracycline in wastewater

Review Engineering, Environmental

Which Micropollutants in Water Environments Deserve More Attention Globally?

Yun Yang et al.

Summary: This review examines the issue of micropollutants in aquatic environments and presents a ranked list of globally important micropollutants for risk management and remediation efforts.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Engineering, Environmental

Profiling of the spatiotemporal distribution, risks, and prioritization of antibiotics in the waters of Laizhou Bay, northern China

Shuang Lu et al.

Summary: The study revealed the presence of multiple antibiotics in Laizhou Bay, with amoxicillin and norfloxacin identified as high-risk pollutants. Veterinary antibiotics were more commonly used in summer.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Review Microbiology

Antibiotic resistance in the environment

D. G. Joakim Larsson et al.

Summary: Antibiotic resistance is a global health challenge, with factors driving evolution and transmission being important to quantify and identify. The environment plays a crucial role, and understanding and managing the resistance crisis can be achieved through implementing monitoring and assessment methods to reduce risks.

NATURE REVIEWS MICROBIOLOGY (2022)

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Article Engineering, Environmental

Easily biodegradable substrates are crucial for enhancing antibiotic risk reduction: Low-carbon discharging policies need to be more specified

Qifeng Zhang et al.

Summary: Easily biodegradable substrates play a crucial role in reducing antibiotic risk in receiving water.

WATER RESEARCH (2022)

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Article Engineering, Environmental

Ag-TiO2/biofilm/nitrate interface enhanced visible light-assisted biodegradation of tetracycline: The key role of nitrate as the electron accepter

Cheng Hou et al.

Summary: This study achieved enhanced visible light-assisted biodegradation of tetracycline (TC) through the pivotal role of Ag-TiO2/biofilm/nitrate interface. It provided a novel and promising strategy for the removal of recalcitrant TC from industrial wastewater, and proposed a possible mechanism for the enhanced TC degradation and nitrogen removal at the Ag-TiO2/biofilm/nitrate interface.

WATER RESEARCH (2022)

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Article Engineering, Environmental

Marine Colloids Promote the Adaptation of Diatoms to Nitrate Contamination by Directional Electron Transfer

Weilu Kang et al.

Summary: This study reveals a mechanism by which diatoms adapt to nitrate contamination through electron transfer from marine colloids, enhancing nitrogen uptake and assimilation. This finding provides insights into the adaptation of diatoms to nitrate pollution.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Engineering, Environmental

Mercury Reduction, Uptake, and Species Transformation byFreshwater AlgaChlorella vulgarisunder Sunlit and Dark Conditions

Xujun Liang et al.

Summary: This study demonstrates that solar irradiation can enhance the reduction of mercuric Hg(II) to elemental Hg(0) by algal cells and their organic matter. Algal organic matter (AOM) was found to be more effective in reducing Hg(II) than algal cells themselves due to cell surface adsorption and uptake of Hg(II) inside the cells under solar irradiation. Additionally, sunlight facilitated the transformation of Hg to less bioavailable species compared to species formed in algal cells in the dark. These findings highlight the important functional roles and potential mechanisms of algae in Hg reduction and immobilization under varying lighting conditions.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Engineering, Environmental

Mixotrophic Cultivation of Microalgae Using Biogas as the Substrate

Xin Li et al.

Summary: Utilizing mixotrophic cultivation of microalgae and co-culturing with methanotrophs provides a potential solution for converting biogas into microalgae-based biodiesel. The organic intermediates released by methanotrophs enhance the biomass and lipid production of microalgae, accelerating nitrogen absorption and improving adaptation to light.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Engineering, Environmental

Metabolic perturbations of Lolium perenne L. by enrofloxacin: Bioaccumulation and multistage defense system

Jiu-Qiang Xiong et al.

Summary: This study investigated the adaptation mechanism of Lolium perenne L. to enmfloxacin contamination. The results showed that the grass could accumulate and translocate enmfloxacin, and detoxify it by enhancing antioxidant enzyme activities and up-regulating gene expression in relevant metabolic pathways.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Engineering, Environmental

Metagenomics and network analysis elucidating the coordination between fermentative bacteria and microalgae in a novel bacterial-algal coupling reactor (BACR) for mariculture wastewater treatment

Yedong Gao et al.

Summary: A novel bacterial-algal coupling reactor (BACR) was investigated for efficient treatment of mariculture wastewater. The BACR integrated acidogenic fermentation and microalgae cultivation, and successfully alleviated the pH drop and feedback inhibition of fermentation. The BACR achieved effective removal of pollutants and enrichment of fermentative bacteria and functional genes, leading to enhanced fatty acid production. The co-occurrence network analysis demonstrated the coordination between fermentative bacteria and microalgae in the BACR.

WATER RESEARCH (2022)

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Article Engineering, Environmental

Trace phenolic acids simultaneously enhance degradation of chlorophenol and biofuel production by Chlorella regularis

Yang Liu et al.

Summary: Combining microalgae cultivation with wastewater treatment and adding phenolic acids can alleviate the inhibition of toxic pollutants on microalgae growth, promote pollutant degradation and lipid accumulation. This study provides a promising new strategy for toxic wastewater treatment and bioresource recovery.

WATER RESEARCH (2022)

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Article Multidisciplinary Sciences

Assessment of global health risk of antibiotic resistance genes

Zhenyan Zhang et al.

Summary: The study analyzes 4572 metagenomic samples to illustrate the global patterns of antibiotic resistance gene (ARG) distribution in diverse habitats. They quantitatively evaluate the health risk to humans of 2561 ARGs by integrating human accessibility, mobility, pathogenicity, and clinical availability. With machine learning, they map the antibiotic resistance threats in global marine habitats with over 75% accuracy.

NATURE COMMUNICATIONS (2022)

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Article Environmental Sciences

Metabolomics reveals the mechanism of tetracycline biodegradation by a Sphingobacterium mizutaii S121

Hao Tan et al.

Summary: This article presents the isolation of strain Sphingobacterium mizutaii S121, which can completely degrade tetracycline within 5 days. The characteristics of tetracycline degradation by S121 were investigated and the degradation products and metabolic pathways were identified using mass spectrometry techniques.

ENVIRONMENTAL POLLUTION (2022)

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Article Engineering, Environmental

Transcriptomic analysis of Raphidocelis subcapitata exposed to erythromycin: The role of DNA replication in hormesis and growth inhibition

Jiahua Guo et al.

Summary: This study uncovered the hormetic effects of erythromycin on green algal growth and the changes in molecular mechanisms at different concentrations. Transcriptomic analysis revealed distinct alterations in gene expression under different concentrations, affecting the growth of algae.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Review Environmental Sciences

Tetracyclines in the environment: An overview on the occurrence, fate, toxicity, detection, removal methods, and sludge management

Jaimy Scaria et al.

Summary: Tetracyclines, a group of broad-spectrum antibiotics, have extensive applications but also pose environmental contamination issues due to their persistent residues and resistance development in microorganisms. Conventional treatment systems are inadequate in removing TCs, requiring a combination of different removal methods for effective mitigation.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

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Article Engineering, Environmental

Could co-substrate sodium acetate simultaneously promote Chlorella to degrade amoxicillin and produce bioresources?

Chongjun Zhang et al.

Summary: Integrating microalgae culture with easy-to-biodegrade substrates such as sodium acetate can enhance antibiotic degradation and bioresource production. This study reveals the potential of utilizing microalgae to recover bioresources from toxic wastewater by activating key metabolic pathways and genes.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Engineering, Environmental

Multiple metabolic pathways of enrofloxacin by Lolium perenne L.: Ecotoxicity, biodegradation, and key driven genes

Chen-Yu Zhao et al.

Summary: This study investigated the ecotoxicological effects, biodegradation, and multiple metabolic pathways of enrofloxacin (ENR) by ryegrass, identifying key metabolic genes and proposing a biodegradation pathway. Results showed high removal rates of ENR by biodegradation and revealed the key functional genes involved in the degradation process. This study contributes to the understanding of antibiotic biodegradation in plants and highlights the potential of ryegrass in treating ENR-polluted water.

WATER RESEARCH (2021)

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Review Environmental Sciences

Environmental fate of tetracycline antibiotics: degradation pathway mechanisms, challenges, and perspectives

Ahmad Fiaz et al.

Summary: Tetracycline pollution poses a growing global threat to aquatic and terrestrial biodiversity due to its unprecedented use in aquaculture, livestock, and human disease prevention. Although there is significant research data on tetracycline, there is a lack of a report compiling recent literature data for better analysis by policymakers, including detection techniques, degradation mechanisms, degradation products, and policy statements.

ENVIRONMENTAL SCIENCES EUROPE (2021)

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Article Environmental Sciences

Development of a Microalgal (Chlorella)-Bacterial (Paracoccus) Symbiotic System for Pyridine Biodegradation under Photosynthetic Oxygenation

Xiaoyu Zhang et al.

Summary: This study found that coupling algae and pyridine-degrading bacteria in a symbiotic system can significantly increase dissolved oxygen concentration, leading to accelerated pyridine degradation rate.

ACS ES&T WATER (2021)

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Article Environmental Sciences