Removal of numerous classes of chemical pollutants from the industrial wastewater such as textile, pharmaceutical and olive mill using conventional wastewater treatment, is incomplete and several studies suggested that improvement of this situation would require the application of biological treatment techniques. Dyes, polyphenols and drugs are an environmental pollutants extremely toxics to plants and other living organisms including humans. These effluents were previously treated by Pseudomonas putida. The main aim of this work was to evaluate the in vivo toxicity of the three wastewaters. Writhes and convulsant effect of effluents were carried out and were compared to the treated effluents. Only pharmaceutical wastewater was exhibited a convulsant effect which observed in mice treated by effluent. On the other hand, all industrial wastewater induced significant algogenic effects particularly when mice were treated by the pharmaceutical wastewater (number of writhes = 44). The authors concluded that toxicity was totally removed when mice were treated by the bio remediated effluent. This indicates that Pseudomonas putida was able to completely detoxify the toxic industrial effluent.
Authors: Ben Mansour, Hedi; Dellai, Afef; Ayed, Yosra ;Full Source: Cancer Cell International 2012, 12, 4 (English) ;