Improving biological removal of pharmaceutical active compounds and estrogenic activity in a mesophilic anaerobic osmotic membrane bioreactor treating municipal sewage.

Autor: Arcanjo GS; Department of Environmental Engineering - Universidade Federal da Bahia, 40210-630, Salvador, BA, Brazil; Department of Civil Engineering - Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil. Electronic address: gemima.arcanjo@ufba.br., Dos Santos CR; Department of Sanitary and Environmental Engineering - Universidade Federal de Minas Gerais, 30270-901, Belo Horizonte, MG, Brazil., Cavalcante BF; Pontifícia Universidade Católica de Minas Gerais - Engineering School, Building 03, Rua Dom José Gaspar, 500 - Coração Eucarístico, 30535-901, Belo Horizonte, Minas Gerais, Brazil., Moura GA; Pontifícia Universidade Católica de Minas Gerais - Engineering School, Building 03, Rua Dom José Gaspar, 500 - Coração Eucarístico, 30535-901, Belo Horizonte, Minas Gerais, Brazil., Ricci BC; Pontifícia Universidade Católica de Minas Gerais - Engineering School, Building 03, Rua Dom José Gaspar, 500 - Coração Eucarístico, 30535-901, Belo Horizonte, Minas Gerais, Brazil., Mounteer AH; Department of Civil Engineering - Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil., Santos LVS; Pontifícia Universidade Católica de Minas Gerais - Engineering School, Building 03, Rua Dom José Gaspar, 500 - Coração Eucarístico, 30535-901, Belo Horizonte, Minas Gerais, Brazil., Queiroz LM; Department of Environmental Engineering - Universidade Federal da Bahia, 40210-630, Salvador, BA, Brazil., Amaral MC; Department of Sanitary and Environmental Engineering - Universidade Federal de Minas Gerais, 30270-901, Belo Horizonte, MG, Brazil.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2022 Aug; Vol. 301, pp. 134716. Date of Electronic Publication: 2022 Apr 26.
DOI: 10.1016/j.chemosphere.2022.134716
Abstrakt: The contamination of water sources by pharmaceutically active compounds (PhACs) and their effect on aquatic communities and human health have become an environmental concern worldwide. Membrane bioreactors (MBRs) are an alternative to improve biological removal of recalcitrant organic compounds from municipal sewage. Their efficiency can be increased by using high retention membranes such as forward osmosis (FO) and membrane distillation (MD). Thus, this research aimed to evaluate the performance of an anaerobic osmotic MBR coupled with MD (OMBR-MD) in the treatment of municipal sewage containing PhACs and estrogenic activity. A submerged hybrid FO-MD module was integrated into the bioreactor. PhACs removal was higher than 96% due to biological degradation, biosorption and membrane retention. Biological removal of the PhACs was affected by the salinity build-up in the bioreactor, with reduction in biodegradation after 32 d. However, salinity increment had little or no effect on biosorption removal. The anaerobic OMBR-MD removed >99.9% of estrogenic activity, resulting in a distillate with 0.14 ng L -1 E2-eq, after 22 d, and 0.04 ng L -1 E2-eq, after 32 d. OMBR-MD treatment promoted reduction in environmental and human health risks from high to low, except for ketoprofen, which led to medium acute environmental and human health risks. Carcinogenic risks were reduced from unacceptable to negligible, regarding estrogenic activity. Thus, the hybrid anaerobic OMBR-MD demonstrated strong performance in reducing risks, even when human health is considered.
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Databáze: MEDLINE
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