Removal of TBP sorbed on wood by Trametes versicolor through solid-state fermentation
Losantos, Diana (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sarrà i Adroguer, Montserrat (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Caminal i Saperas, Glòria (Institut de Química Avançada de Catalunya)

Date:	2024
Description:	11 pàg.
Abstract:	The use of white-rot fungi is a promising approach for removing organophosphate flame retardants (OPFRs) from wastewaters. Immobilization in wood for this purpose ensures the predominance of the fungus but also contributes to OPFRs sorption. This work focused on the ability of T. versicolor to degrade tributyl phosphate (TBP) sorbed in wood. This initially underwent ten sorption cycles, each involving exposure to a 10 mg·L-1 TBP solution. Throughout each cycle, the wood exhibited a sustained sorption capacity (0. 035 ± 0. 002 mg TBP·g. dry wood-1 per cycle). The wood residues obtained after each sorption cycle were inoculated with T. versicolor. After 60 days of inoculation, fungus degraded over 90 % of TBP in each cycle's wood residue. However, fungal growth was inhibited, resulting in a 43 % decrease in biomass compared to controls. The fact that biomass remained active and capable of degrading TBP suggests that the growth decrease is likely due to the formation of transformation products. An increase in toxicity units (from 13. 64 to 87. 86 at the end) was associated with the accumulation of 3-hydroxybutyl dihydrogen phosphate (OH-MBP). However, subsequent experiments demonstrated that given sufficient time, the fungus not only degraded OH-MBP but also produced a non-toxic effluent.
Grants:	Agencia Estatal de Investigación PID2019-103989RB-100 Agencia Estatal de Investigación PRE2020-095902 Ministerio de Ciencia e Innovación TED2021-130639B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01008
Note:	Altres ajuts: acords transformatius de la UAB
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Bioremediation ; Emerging pollutants ; Immobilization ; Sorption ; Toxicity of transformation products ; White-rot fungi
Published in:	Journal of hazardous materials, Vol. 480 (December 2024) , art. 136066, ISSN 1873-3336

DOI: 10.1016/j.jhazmat.2024.136066
PMID: 39405698

11 p, 3.9 MB

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