2026-04-14T07:10:39Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4473632026-03-13T07:29:01Zcom_2072_98col_2072_378192

The removal of diuron from agricultural wastewaters by Trametes versicolor immobilized on pinewood in simple channel reactors Beltrán Flores, Eduardo Torán, Josefina Caminal i Saperas, Glòria Blánquez Cano, Paqui Sarrà i Adroguer, Montserrat Bioreactor Pesticide Low-cost sorbent Organic contaminant Fungal treatment The presence of pesticides in agricultural wastewater entails harmful risks to both the environment and public health. In this study, two channel-type bioreactors with Trametes versicolor immobilized on pinewood chips were evaluated in terms of the removal efficiency of diuron from agricultural wastewater under non-sterile conditions. First, both single and successive sorption processes of diuron on pinewood chips were evaluated. The Freundlich model showed the best correlation in the sorption isotherm study (R2 = 0.993; Δq = 5.245), but according to repeated sorption experiments, the Langmuir model (R2 = 0.993; Δq = 5.757) was considered more representative. Equilibrium was reached after approximately 48 h, and the Elovich kinetic model gave the best fit with the experimental data. A packed-bed channel bioreactor (PBCB) was found to be a remarkable alternative able to remove up to 94% diuron from agricultural wastewater during 35 d. However, periodic manual mixing was required to guarantee an aerobic process, and a rotating drum bioreactor (RDB) was subsequently proposed as an enhanced version. The RDB removed up to 61% diuron during 16 d using almost 7 times lower wood dose (152 g wood·L-1) than in the PBCB (1000 g wood·L-1). 2020 Article Agencia Estatal de Investigación CTM2016-75587-C2-1-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-14 Agencia Estatal de Investigación BES-2017-080500 Science of the total environment ; Vol. 728 (August 2020), art. 138414 open access 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. https://creativecommons.org/licenses/by-nc-nd/4.0/