Bioremediation techniques for naproxen and carbamazepine elimination. Toxicity evaluation test

Isolation, identification and toxicological monitoring of new microbial consortia to degrade PPCP's (pharmaceuticals and personal care products) have direct applications to improve the quality of effluents in WWTP (wastewater treatment plants). In this work, we present isolation and molecular identification of a microbial strain degrading frequently detected compounds in effluent water such as naproxen (analgesic) and carbamazepine (anticonvulsant), as well as detoxification evaluation by a zebrafish embryos biomodel. Naproxen was completely removed from real contaminated water samples within 7 days of culture by Serratia sp. However, the microbial strain was unable to remove carbamazepine remaining constant until the analysis finished. Toxicity test showed that naproxen elimination reduces mortality zebrafish embryos at 28%. As conclusion, Serratia sp. and possible other Enterobacteriaceae could be used in bioreactors and purifying plant biodiscs in order to achieve naproxen and probably others PPCPs total elimination from effluent prior being poured into rivers or lakes.