Fungal and Bacterial Co-Bioaugmentation of a Pesticide-Degrading Biomixture: Pesticide Removal and Community Structure Variations during Different Treatments

Biopurification systems (BPS) are employed for the treatment of pesticide-containing wastewaters. In this work, a biomixture (active core of BPS) complemented by the addition of the fungus Trametes versicolor was evaluated for the elimination of a mixture of pesticides under different treatment cond...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2019-10, Vol.230 (10), p.1-13, Article 247
Main Authors: Castro-Gutiérrez, Víctor, Masís-Mora, Mario, Carazo-Rojas, Elizabeth, Mora-López, Marielos, Rodríguez-Rodríguez, Carlos E.
Format: Article
Language:English
Subjects:
Ageing
Aging
Analysis
Antibiotics
Atmospheric Protection/Air Quality Control/Air Pollution
Atrazine
Bacteria
Bioremediation
Carbamates
Carbendazim
Carbofuran
Climate Change/Climate Change Impacts
Communities
Community structure
Consortia
Earth and Environmental Science
Environment
Environmental monitoring
Fungi
Fungicides
Herbicides
Hydrogeology
Metalaxyl
Oxytetracycline
Pesticide application
Pesticides
Pollutant removal
Profiles
Purification
Removal
Sewage
Soil Science & Conservation
Wastewater
Water Quality/Water Pollution
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Summary:Biopurification systems (BPS) are employed for the treatment of pesticide-containing wastewaters. In this work, a biomixture (active core of BPS) complemented by the addition of the fungus Trametes versicolor was evaluated for the elimination of a mixture of pesticides under different treatment conditions. The biomixture achieved high removal of all the pesticides assayed after 16 d: atrazine (68.4%, t 1/2 : 9.6 d), carbendazim (96.7%, t 1/2 : 3.6 d), carbofuran (98.7%, t 1/2 : 3.1 d) and metalaxyl (96.7%, t 1/2 : 3.8 d). Variations in the treatment conditions including addition of the antibiotic oxytetracycline and co-bioaugmentation with a bacterial consortium did not significantly affect the removal performance of the biomixture. Bacterial and fungal community profiles determined by DGGE analyses revealed changes that responded to biomixture aging, and not to antibiotic or pesticide addition. The proposed biomixture exhibits very efficient elimination during simultaneous pesticide application; moreover, the matrix is highly stable during stressful conditions such as the co-application of antibiotics of agricultural use.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-019-4282-y