Removal of micropollutants in a ceramic membrane bioreactor for the post-treatment of municipal wastewater

Li, Rui; Kadrispahic, Haris; Jørgensen, Mads Koustrup; Berg, Sisse Brøndum; Thornberg, Dines; Mielczarek, Artur Tomasz; Bester, Kai

doi:10.1016/j.cej.2021.131458

Cited by 12 publications

(7 citation statements)

References 64 publications

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“…MBR has been widely applied for the removal of nitrogen, phosphorus and micropollutants, as it has the advantages of high activated sludge concentrations, high volumetric loading rates, a small footprint, relatively low levels of sludge generation and the ability to achieve high performance levels by combining biological degradation and membrane filtration processes [ 2 , 3 , 4 ]. In recent years, pollutants originating from pharmaceuticals and personal care products (PPCPs) have been identified as key emerging micropollutants, which are widely detectable in natural water-bodies at concentrations in the ng/L to μg/L range, posing a threat to both environmental and human health [ 3 ]. The high concentration of PPCPs in natural water-bodies has been attributed to their widespread accessibility and high usage levels worldwide [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of High Pharmaceutical Concentrations in Domestic Wastewater on Membrane Bioreactor Treatment Systems: Performance and Microbial Community

Huang

et al. 2023

Membranes

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Despite pharmaceuticals being widely detected in water-bodies worldwide, what remain unclear are the effects of high pharmaceutical concentrations on the treatment efficiency of biological wastewater treatment processes, such as membrane bioreactor (MBR) systems. This study investigated the efficiency of MBR technology in the treatment of synthetic wastewater containing a mixture of five typical pharmaceuticals (ofloxacin, sulfamethoxazole, sulfamethylthiadiazole, carbamazepine and naproxen) with a total concentration of 500 µg/L. Both the control MBR (MBRc) without pharmaceutical dosing and the MBR operated with high influent pharmaceutical concentrations (MBRe) were operated under room temperature with the same hydraulic retention time of 11 h and the same sludge retention time of 30 d. The removal efficiency rates of total nitrogen and total phosphorus were 83.2% vs. 90.1% and 72.6% vs. 57.8% in the MBRc vs. MBRe systems, and both MBRs achieved >98% removal of organics for a 180-day period. The floc size decreased, and membrane fouling became more severe in the MBRe system. Microbial diversity increased in the MBRe system and the relative abundances of functional microbe differed between the two MBRs. Furthermore, the total relative abundances of genes involved in glycolysis, assimilating nitrate reduction and nitrification processes increased in the MBRe system, which could account for the higher organics and nitrogen removal performance. This work provides insights for MBR operation in wastewater treatment with high pharmaceutical concentrations.

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Section: Introductionmentioning

confidence: 99%

Effects of High Pharmaceutical Concentrations in Domestic Wastewater on Membrane Bioreactor Treatment Systems: Performance and Microbial Community

Huang

et al. 2023

Membranes

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“…Currently, they are addressed by soft law, such as by an European Union watchlist [17], and innovative treatment technologies are developed, c.f. [18][19][20]. Microplastic pollution is another emerging issue with active research on removal technologies [21].…”

Section: Methodsmentioning

confidence: 99%

Sustainability Assessment for Wastewater Treatment Systems in Developing Countries

Starkl

Brunner

Das³

et al. 2022

Water

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As the assessment of the economic, environmental, institutional, and social sustainability of wastewater treatment systems may have several conceivable goals and intended recipients, there are numerous different approaches. This paper surveys certain aspects of sustainability assessment that may be of interest to the planners of wastewater treatment systems. Here, the key criteria assess the system’s costs and financing, including its affordability for the users, the environmental impact, the benefits for health and hygiene, the cultural acceptance of the system and its recycled products, the technical functioning, and the administrative, political, and legal framework for its construction and operation. A multi-criteria approach may then be used to analyze possible trade-offs and identify the most suitable system for a certain location.

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“…These technologies include approaches such as adsorption, advanced oxidation processes, hydrolysis processes and phytoremediation [ 14 , 15 ]. Biological technologies based on biofilm-based reactors and activated sludge have also been reported and have gained attraction for EPs remediation due to their potential advantages such as cost effectiveness and environmental friendliness [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Efficient degradation of various emerging pollutants by wild type and evolved fungal DyP4 peroxidases

et al. 2022

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The accumulation of emerging pollutants in the environment remains a major concern as evidenced by the increasing number of reports citing their potential risk on environment and health. Hence, removal strategies of such pollutants remain an active area of investigation. One way through which emerging pollutants can be eliminated from the environment is by enzyme-mediated bioremediation. Enzyme-based degradation can be further enhanced via advanced protein engineering approaches. In the present study a sensitive and robust bioanalytical liquid chromatography-tandem mass spectrometry (LCMSMS)-based approach was used to investigate the ability of a fungal dye decolorizing peroxidase 4 (DyP4) and two of its evolved variants—that were previously shown to be H2O2 tolerant—to degrade a panel of 15 different emerging pollutants. Additionally, the role of a redox mediator was examined in these enzymatic degradation reactions. Our results show that three emerging pollutants (2-mercaptobenzothiazole (MBT), paracetamol, and furosemide) were efficiently degraded by DyP4. Addition of the redox mediator had a synergistic effect as it enabled complete degradation of three more emerging pollutants (methyl paraben, sulfamethoxazole and salicylic acid) and dramatically reduced the time needed for the complete degradation of MBT, paracetamol, and furosemide. Further investigation was carried out using pure MBT to study its degradation by DyP4. Five potential transformation products were generated during the enzymatic degradation of MBT, which were previously reported to be produced during different bioremediation approaches. The current study provides the first instance of the application of fungal DyP4 peroxidases in bioremediation of emerging pollutants.

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Removal of micropollutants in a ceramic membrane bioreactor for the post-treatment of municipal wastewater

Cited by 12 publications

References 64 publications

Effects of High Pharmaceutical Concentrations in Domestic Wastewater on Membrane Bioreactor Treatment Systems: Performance and Microbial Community

Effects of High Pharmaceutical Concentrations in Domestic Wastewater on Membrane Bioreactor Treatment Systems: Performance and Microbial Community

Sustainability Assessment for Wastewater Treatment Systems in Developing Countries

Efficient degradation of various emerging pollutants by wild type and evolved fungal DyP4 peroxidases

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