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Removal and fate of emerging organic micropollutants (EOMs) in municipal wastewater by a pilot-scale membrane bioreactor (MBR) treatment under varying solid retention times

Gurung, Khum; Ncibi, Mohamed Chaker; Sillanpää, Mika (2019-02-20)

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gurung_et_al_removal_and_fate_aam.pdf (5.060Mb)
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Post-print / Final draft

Gurung, Khum
Ncibi, Mohamed Chaker
Sillanpää, Mika
20.02.2019

Science of the Total Environment

Elsevier

School of Engineering Science

https://doi.org/10.1016/j.scitotenv.2019.02.308
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201902276408

Tiivistelmä

This study investigates the removal and fate of 23 emerging organic micropollutants (EOMs) including a wide range of pharmaceuticals (antibiotics, β-blockers, analgesics, diuretics, psychostimulants, antiepileptics, immunosuppressives, anticoagulants), and steroid hormones detected in municipal wastewater by a pilot-scale membrane bioreactor (MBR) plant at two different solid retention times (SRTs) of 60 and 21 days. Different removal efficiencies of the selected EOMs were observed and explained based on their physicochemical properties (such as distribution coefficient, log D; dissociation constant, pKa; solid-water distribution coefficients, and Kd) along with process operating parameters. The dominant removal mechanisms of EOMs were biotransformation and sorption onto the sludge, which were confirmed by the mass balance study. Moreover, changes in the sludge properties, as a consequence of different SRTs, were evaluated based on variations in soluble microbial products (SMP), extracellular polymeric substances (EPS), and capillary suction time (CST). Finally, the quality of the MBR effluent was compared with some established guidelines, which confirmed the fulfilment of water quality requirements for reuse purposes.

Lähdeviite

K. Gurung, M.C. Ncibi and M. Sillanpää, Removal and fate of emerging organic micropollutants (EOMs) in municipal wastewater by a pilot-scale membrane bioreactor (MBR) treatment under varying solid retention times, Science of the Total Environment, https://doi.org/10.1016/j.scitotenv.2019.02.308

Alkuperäinen verkko-osoite

https://www.sciencedirect.com/science/article/pii/S0048969719308113?via%3Dihub
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