Fungal bioremediation of agricultural wastewater in a long-term treatment : biomass stabilization by immobilization strategy
Beltrán-Flores, Eduardo (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Pla-Ferriol, Martí (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
Martínez Alonso, María Ramos (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
Gaju, Núria (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia)
Blánquez Cano, Paqui (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)

Date:	2022
Abstract:	Fungal bioremediation emerges as an effective technology for pesticide treatment, but its successful implementation depends on overcoming the problem of microbial contamination. In this regard, fungal immobilization on wood seems to be a promising strategy, but there are two main drawbacks: the predominant removal of pesticides by sorption and fungal detachment. In this study, agricultural wastewater with pesticides was treated by Trametes versicolor immobilized on wood chips in a rotary drum bioreactor (RDB) for 225 days, achieving fungal consolidation and high pesticide biodegradation through two main improvements: the use of a more favorable substrate and the modification of operating conditions. Fungal community dynamic was assessed by denaturing gradient gel electrophoresis (DGGE) analysis and subsequent prominent band sequencing, showing a quite stable community in the RDB, mainly attributed to the presence of T. versicolor. Pesticide removals were up to 54 % diuron and 48 % bentazon throughout the treatment. Afterwards, pesticide-contaminated wood chips were treated by T. versicolor in a solid biopile-like system. Hence, these results demonstrate that the microbial contamination constraint has definitely been overcome, and fungal bioremediation technology is ready to be implemented on a larger scale.
Grants:	Ministerio de Economía y Competitividad CTM2016-75587-C2-1-R Agencia Estatal de Investigación PID2019-103989RB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-0014 Agencia Estatal de Investigación BES-2017-080500
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, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Journal of hazardous materials, Vol. 439 (October 2022) , p. 129614, ISSN 1873-3336

DOI: 10.1016/j.jhazmat.2022.129614
PMID: 35882168

11 p, 3.8 MB

The record appears in these collections:
Articles > Research articles
Articles > Published articles