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Biocatalytic degradation of pharmaceuticals, personal care products, industrial chemicals, steroid hormones and pesticides in a membrane distillation-enzymatic bioreactor

Journal Article


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Abstract


  • Laccase-catalyzed degradation of a broad spectrum of trace organic contaminants (TrOCs) by a membrane distillation (MD)-enzymatic membrane bioreactor (EMBR) was investigated. The MD component effectively retained TrOCs (94–99%) in the EMBR, facilitating their continuous biocatalytic degradation. Notably, the extent of TrOC degradation was strongly influenced by their molecular properties. A significant degradation (above 90%) of TrOCs containing strong electron donating functional groups (e.g., hydroxyl and amine groups) was achieved, while a moderate removal was observed for TrOCs containing electron withdrawing functional groups (e.g., amide and halogen groups). Separate addition of two redox-mediators, namely syringaldehyde and violuric acid, further improved TrOC degradation by laccase. However, a mixture of both showed a reduced performance for a few pharmaceuticals such as primidone, carbamazepine and ibuprofen. Mediator addition increased the toxicity of the media in the enzymatic bioreactor, but the membrane permeate (i.e., final effluent) was non-toxic, suggesting an added advantage of coupling MD with EMBR.

Authors


  •   Asif, Muhammad Bilal (external author)
  •   Hai, Faisal I.
  •   Kang, Jinguo (external author)
  •   Van De Merwe, Jason P. (external author)
  •   Leusch, Frederic (external author)
  •   Price, William E.
  •   Nghiem, Long D. (external author)

Publication Date


  • 2018

Citation


  • Asif, M. B., Hai, F. I., Kang, J., van de Merwe, J. P., Leusch, F. D. L., Price, W. E. & Nghiem, L. D. (2018). Biocatalytic degradation of pharmaceuticals, personal care products, industrial chemicals, steroid hormones and pesticides in a membrane distillation-enzymatic bioreactor. Bioresource Technology, 247 528-536.

Scopus Eid


  • 2-s2.0-85030244669

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1663&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/662

Number Of Pages


  • 8

Start Page


  • 528

End Page


  • 536

Volume


  • 247

Place Of Publication


  • Netherlands

Abstract


  • Laccase-catalyzed degradation of a broad spectrum of trace organic contaminants (TrOCs) by a membrane distillation (MD)-enzymatic membrane bioreactor (EMBR) was investigated. The MD component effectively retained TrOCs (94–99%) in the EMBR, facilitating their continuous biocatalytic degradation. Notably, the extent of TrOC degradation was strongly influenced by their molecular properties. A significant degradation (above 90%) of TrOCs containing strong electron donating functional groups (e.g., hydroxyl and amine groups) was achieved, while a moderate removal was observed for TrOCs containing electron withdrawing functional groups (e.g., amide and halogen groups). Separate addition of two redox-mediators, namely syringaldehyde and violuric acid, further improved TrOC degradation by laccase. However, a mixture of both showed a reduced performance for a few pharmaceuticals such as primidone, carbamazepine and ibuprofen. Mediator addition increased the toxicity of the media in the enzymatic bioreactor, but the membrane permeate (i.e., final effluent) was non-toxic, suggesting an added advantage of coupling MD with EMBR.

Authors


  •   Asif, Muhammad Bilal (external author)
  •   Hai, Faisal I.
  •   Kang, Jinguo (external author)
  •   Van De Merwe, Jason P. (external author)
  •   Leusch, Frederic (external author)
  •   Price, William E.
  •   Nghiem, Long D. (external author)

Publication Date


  • 2018

Citation


  • Asif, M. B., Hai, F. I., Kang, J., van de Merwe, J. P., Leusch, F. D. L., Price, W. E. & Nghiem, L. D. (2018). Biocatalytic degradation of pharmaceuticals, personal care products, industrial chemicals, steroid hormones and pesticides in a membrane distillation-enzymatic bioreactor. Bioresource Technology, 247 528-536.

Scopus Eid


  • 2-s2.0-85030244669

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1663&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/662

Number Of Pages


  • 8

Start Page


  • 528

End Page


  • 536

Volume


  • 247

Place Of Publication


  • Netherlands