OIL-CONTAMINATED WATER TREATMENT WITH MODIFIED ASH WOOD SAWDUST

Abstract

In the current scenario treatment of oil hydrocarbons contaminated surface and water is one of the most critical environmental issues. Although various treatment methods are available, among these the most effective and environmentally friendly is the sorption method of treatment. The current study is an attempt to investigate the sorption capacity of native and ultrasonically modified ash sawdust sorbents to dissolved and emulsified oil hydrocarbons from wastewater and water bodies under dynamic conditions. Further, ash sawdust (Fraxinus excelsior) formed in woodworking enterprises of the Kama region, Republic of Tatarstan, was used as sorbents. To increase the sorption capacity, wood waste was exposed to ultrasound at a frequency of 35,000 Hz for 4 hours. Results of the study revealed that wood waste has sorption capacity and sorption oil hydrocarbons from wastewater were dependent on various factors. Further, the ultrasonic treatment of wood waste has been increased the sorption capacity of wood waste by 24 percent. Under dynamic conditions, the sorption capacity of ultrasound modified ash sawdust with relation to emulsified oil products was investigated, and reported that ash sawdust has 79% cleaning efficiency. The toxicity of ultrasound-modified ash sawdust was investigated by bio testing on Daphnia magna straus and reported that the ultrasound-modified ash sawdust has acute toxicity on experimental organisms.