Removal behavior and key drivers of antibiotic resistance genes in two full-scale leachate treatment plants

Yang, Jun; Xiang, Jinyi; Xie, Yong; Yu, Kaifeng; Li, Junnan; Wang, Haoyan; Gin, Karina Yew-Hoong; He, Yiliang

doi:10.1016/j.watres.2022.119239

Cited by 18 publications

(4 citation statements)

References 57 publications

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“…ARGs are also of particular concern as emerging pollutants because of their hazards to human health and environmental sustainability [26,27]. Despite several reports on antibiotic-resistant bacteria discharged from treated municipal wastewater, data on ARBs and ARGs from MSW landfill leachate is rarely published.…”

Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

“…Landfill is the most frequent method of MSW disposal worldwide, and food waste leachate is regarded as an important ARGs reservoir [28]. The issue has received insufficient attention, and therefore it is essential to consider the toxicity and treatment of ARGs in landfill leachate [27]. Municipal solid waste (MSW) leachate discharge has the potential to severely damage groundwater and surface water.…”

Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

“…It is a popular method for lowering the amount of biomass, while treating numerous types of organic substrates such as sewage sludge, municipal solid waste, manure, and lignocellulosic biomass, with additional methane extraction as an economical energy source [35]. Anaerobic digestion also provides the promising elimination of ARGs in leachate [27]. The methane thus produced as a by-product can be used directly to generate heat, electricity, and other energy purposes.…”

Section: Anaerobic Digestion: Viability For Leachate Treatmentmentioning

confidence: 99%

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A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

Anjum

Anees

Qadeer

et al. 2023

IJMS

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Landfill leachate (LFL) treatment is a severe challenge due to its highly viscous nature and various complex pollutants. Leachate comprises various toxic pollutants, including inorganic macro/nano components, xenobiotics, dissolved organic matter, heavy metals, and microorganisms responsible for severe environmental pollution. Various treatment procedures are available to achieve better effluent quality levels; however, most of these treatments are nondestructive, so pollutants are merely transported from one phase to another, resulting in secondary contamination. Anaerobic digestion is a promising bioconversion technology for treating leachate while producing renewable, cleaner energy. Because of its high toxicity and low biodegradability, biological approaches necessitate employing other techniques to complement and support the primary process. In this regard, pretreatment technologies have recently attracted researchers’ interest in addressing leachate treatment concerns through anaerobic digestion. This review summarizes various LFL pretreatment methods, such as electrochemical, ultrasonic, alkaline, coagulation, nanofiltration, air stripping, adsorption, and photocatalysis, before the anaerobic digestion of leachate. The pretreatment could assist in converting biogas (carbon dioxide to methane) and residual volatile fatty acids to valuable chemicals and fuels and even straight to power generation. However, the selection of pretreatment is a vital step. The techno-economic analysis also suggested the high economic feasibility of integrated-anaerobic digestion. Therefore, with the incorporation of pretreatment and anaerobic digestion, the process could have high economic viability attributed to bioenergy production and cost savings through sustainable leachate management options.

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Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

Section: Anaerobic Digestion: Viability For Leachate Treatmentmentioning

confidence: 99%

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A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

Anjum

Anees

Qadeer

et al. 2023

IJMS

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“…11 The relative abundance of sul genes and class 1 integrons were inhibited by influencing the rhizosphere microbial community in constructed wetlands, 12 which suggested that mobile genetic elements (MGEs) are the key factor affecting ARG proliferation. MGEs act as the direct transfer agents of ARGs in various environmental media such as secondary effluent and sludge, 13,14 which are crucial for the horizontal gene transfer of ARGs. Moreover, identifying ARG hosts is key for reducing the spread of ARGs and antibiotic-resistant pathogens.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and Composition Patterns of ARGs in Plant-Microbial Synergism Were Negatively Reconstructed by an Electrochemical Technology at Low Temperatures

Zhang,

Han,

Liu

et al. 2024

ACS EST Eng.

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Electrochemical technology has been proven to significantly improve the performance of ecological treatment technology for the removal of antibiotics and antibiotic resistance genes (ARGs). However, how electrochemical technology affected the occurrence of ARGs in multimedia of ecological treatment technology, especially at low temperatures, is still a knowledge gap. In this study, the electrochemically coupled plant-microbial system at low temperatures was built to decipher the occurrence, mobility, and hosts of ARGs in multimedia under sulfamethoxazole selection pressure by metagenomic assembly and binning. Our results indicated that intracellular ARGs (iARGs) were higher than extracellular ARGs (eARGs) in effluents. Raising the voltage (10 V) reduced the abundance of iARGs but increased the abundance of eARGs. Electrochemical technology increased the abundance of ARGs in multimedia, and the iron ion was the key contributor. Microcurrent increased the transfer frequency of ARG-carrying contigs (ACCs), but iron ions decreased the proportion of ACCs on plasmids. Electrochemical technology changed the representative combinations of ARGs and MGEs. Iron plaque in roots is a hot spot for the enrichment of ARGs due to the provided adsorption sites for microbial proliferation. We found that electrochemical technology at low temperatures can increase the cumulative risk of ARGs in ecological treatment technology, which deepened our insights into the safety of the electrochemically enhanced ecological treatment technology at low temperatures.

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Membranes in Landfill Leachate Treatment: Evaluation of the Generated Concentrate

de Almeida,

Campos

2024

Springer Water

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Removal behavior and key drivers of antibiotic resistance genes in two full-scale leachate treatment plants

Cited by 18 publications

References 57 publications

A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

Occurrence and Composition Patterns of ARGs in Plant-Microbial Synergism Were Negatively Reconstructed by an Electrochemical Technology at Low Temperatures

Membranes in Landfill Leachate Treatment: Evaluation of the Generated Concentrate

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