Organophosphorus compounds biodegradation by novel bacterial isolates and their potential application in bioremediation of contaminated water
- Santillan, Julia Yamila
- Rojas, Natalia Lorena
- Ghiringhelli, Pablo Daniel
- Nóbile, Matías Leonardo
- Lewkowicz, Elizabeth Sandra
- Iribarren, Adolfo Marcelo
DOIAbstract
Organophosphorus compounds (OPs), the major pesticides used worldwide, comprise an environmental hazard due to their harmful toxicity. Aimed to develop a bioreactor to remediate OPs contaminated wastewater, bacteria isolated from contaminated soils were identified and their ability to degrade OPs assessed, resulting in two main isolates, Sphingomonas sp. and Brevundimonas sp. Their OP degrading activities were characterized in terms of temperature, pH and substrates acceptance, resulting in high degradation rates at 60 °C, pH 10 and towards bulky OPs such as coroxon, coumaphos, and chlorpyrifos. Sphingomonas sp. cells were immobilized and 75.4% degradation of 0.15 mM chlorpyrifos was achieved after 21 days by immobilized cells in batch syst...
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