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Pàgina inicial > Articles > Articles publicats > The removal of diuron from agricultural wastewaters by Trametes versicolor immobilized on pinewood in simple channel reactors |
Data: | 2020 |
Resum: | 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). |
Ajuts: | Ministerio de Economía y Competitividad CTM2016-75587-C2-1-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-14 Ministerio de Economía y Competitividad BES-2017-080500 |
Drets: | 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. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Bioreactor ; Pesticide ; Low-cost sorbent ; Organic contaminant ; Fungal treatment |
Publicat a: | Science of the total environment, Vol. 728 (August 2020) , art. 138414, ISSN 1879-1026 |
Postprint 35 p, 998.7 KB |