Sammanfattning

Efficient removal techniques are urgently needed to remove organic micropollutants (OMPs) from wastewater, in order to protect water resources. In this study, laccase activity of mushroom substrate colonized by Pleurotus ostreatus was evaluated as a novel wastewater treatment method for removal of OMPs, including diclofenac, bicalutamide, lamotrigine, and metformin at environmentally relevant concentrations. Laccase activity of the colonized mushroom substrate was found to be highest, 0.8 enzyme activity (U)/g mushroom substrate wet weight, immediately before initiation of fruiting body formation. The selected OMPs were treated for 5 min with suspensions of mushroom substrate with laccase activity of approximately 50 U/L. Removal of all OMPs was significant, with the highest removal for diclofenac of 90% compared with a control with uncolonized mushroom substrate. To our knowledge, direct use of colonized mushroom substrate in removing diclofenac from water has not been reported previously. Removal efficiency of bicalutamide, lamotrigine, and metformin was 43%, 73%, and 59%, respectively. This demonstrates potential for using mushroom substrate colonized by P. ostreatus for removal of OMPs from wastewater.

Nyckelord

Pharmaceuticals; Laccase; Oyster mushroom; Spent mushroom substrate (SMS); Wastewater treatment

Publicerad i

Journal of Environmental Management
2020, Volym: 275, artikelnummer: 111087

SLU författare

• Hultberg, Malin

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

• Ahrens, Lutz

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

• Golovko, Oksana

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

Globala målen

SDG6 Säkerställa tillgången till och en hållbar förvaltning av vatten och sanitet för alla


UKÄ forskningsämne

Vattenbehandling


Publikationens identifierare

DOI: https://doi.org/10.1016/j.jenvman.2020.111087

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/106852