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Simultaneous activated carbon adsorption within a membrane bioreactor for an enhanced micropollutant removal

Journal Article


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Abstract


  • Significant adsorption of sulfamethoxazole and carbamazepine to powdered activated carbon (PAC) was confirmed by a series of adsorption tests. In contrast, adsorption of these micropollutants to the sludge was negligible. The removal of these compounds in membrane bioreactor (MBR) was dependent on their hydrophobicity and loading as well as the PAC dosage. Sulfamethoxazole exhibited better removal rate during operation under no or low (0.1 g/L) PAC dosage. When the PAC concentration in MBR was raised to 1.0 g/L, a sustainable and significantly improved performance in the removal of both compounds was observed – the removal efficiencies of sulfamethoxazole and carbamazepine increased to 82 ± 11% and 92 ± 15% from the levels of 64 ± 7%, and negligible removal, respectively. The higher removal efficiency of carbamazepine at high (1.0 g/L) PAC dosage could be attributed to the fact that carbamazepine is relatively more hydrophobic than sulfmethoxazole, which subsequently resulted in its higher adsorption affinity toward PAC.

Authors


  •   Li, Xueqing (external author)
  •   Hai, Faisal I.
  •   Nghiem, Long D. (external author)

Publication Date


  • 2011

Citation


  • Li, X., Hai, F. I. & Nghiem, L. D. (2011). Simultaneous activated carbon adsorption within a membrane bioreactor for an enhanced micropollutant removal. Bioresource Technology, 102 (9), 5319-5324.

Scopus Eid


  • 2-s2.0-79953034259

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6801&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3870

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 5319

End Page


  • 5324

Volume


  • 102

Issue


  • 9

Place Of Publication


  • Netherlands

Abstract


  • Significant adsorption of sulfamethoxazole and carbamazepine to powdered activated carbon (PAC) was confirmed by a series of adsorption tests. In contrast, adsorption of these micropollutants to the sludge was negligible. The removal of these compounds in membrane bioreactor (MBR) was dependent on their hydrophobicity and loading as well as the PAC dosage. Sulfamethoxazole exhibited better removal rate during operation under no or low (0.1 g/L) PAC dosage. When the PAC concentration in MBR was raised to 1.0 g/L, a sustainable and significantly improved performance in the removal of both compounds was observed – the removal efficiencies of sulfamethoxazole and carbamazepine increased to 82 ± 11% and 92 ± 15% from the levels of 64 ± 7%, and negligible removal, respectively. The higher removal efficiency of carbamazepine at high (1.0 g/L) PAC dosage could be attributed to the fact that carbamazepine is relatively more hydrophobic than sulfmethoxazole, which subsequently resulted in its higher adsorption affinity toward PAC.

Authors


  •   Li, Xueqing (external author)
  •   Hai, Faisal I.
  •   Nghiem, Long D. (external author)

Publication Date


  • 2011

Citation


  • Li, X., Hai, F. I. & Nghiem, L. D. (2011). Simultaneous activated carbon adsorption within a membrane bioreactor for an enhanced micropollutant removal. Bioresource Technology, 102 (9), 5319-5324.

Scopus Eid


  • 2-s2.0-79953034259

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6801&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3870

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 5319

End Page


  • 5324

Volume


  • 102

Issue


  • 9

Place Of Publication


  • Netherlands