420253 Advanced Oxidation Processes Involving Ultrasound and Cavitation for Environmental Remediation: Recent Technical Developments, Cost Estimation and Economic Feasibility

Wednesday, November 11, 2015: 1:20 PM
255F (Salt Palace Convention Center)
Yusuf G (Debo) Adewuyi, Chemical, Biological and Bioengineering, North Carolina A&T State University, Greensboro, NC and Dr. Robert W. Peters, Civil, Construction, and Environmental Engineering, University of Alabama at Birmingham, Birmingham, AL

Recently, advanced oxidation processes (AOPs) have found world-wide applications for water treatment and environmental remediation and control of air toxics. Ultrasound and hydrodynamic cavitation alone or in combination with other AOPs such as persulfate and other homogeneous and heterogeneous advanced oxidative species are of particular interests in the research community. These processes offer the potential for shorter reaction cycles, cheaper reagents, and less extreme physical conditions, leading to less expensive and perhaps smaller plants. AOPs have promise to destroy many emerging organic contaminants in water, soil/sediments and air, are being considered in potable water treatment, wastewater treatment, site remediation, and industrial applications. Numerous aqueous emerging organic micropollutants such as perfluorinated surfactants and perfluroalkyl acids (PFAAs), pharmaceuticals, hormones, steroids, antibiotics, personal care products, disinfection by-products, noxious air pollutants, and other emerging pollutants have been studied.  Two things are needed for any technology to be suitable for use in the industry: 1. Technical feasibility and 2. Economic feasibility. This paper will provide a state-of-the-art and unified fundamental chemistry and reaction kinetics involved in the emerging advanced oxidation processes, and techniques to estimate energy needs and cost. It will evaluate the performance and economics of ultrasound and hydrodynamic cavitation alone or in combination with other AOPs for pollution remediation, and compare results with conventional technologies. It is intended to advance our fundamental understanding and outline directions for future developments needed to facilitate the move beyond lab-scale to practical and commercial applications.


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Adewuyi, Y.G.  Sonochemistry in Environmental Remediation. 1. Combinative and Hybrid Sonophotochemical Oxidation Processes for the Treatment of Pollutants in Water. Environmental Science & Technology. 2005, 39, 3409-3420 http://dx.doi.org/10.1021/es049138y

Adewuyi, Y.G. Sonochemistry: Environmental Science and Engineering Applications. Industrial & Engineering Chemistry Research. 2001, 40, 4681-4715 http://dx.doi.org/10.1021/ie010096l

Gogate, P.R.; Sutkar, V.S; Pandit, A.B. Sonochemical Reactors. Important Design and Scale-up Consideartions with a Special Emphasis on Heterogeneous System. Chemical Engineering Journal. 2011, 166, 1066-1082.

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See more of this Session: Advanced Oxidation Processes II
See more of this Group/Topical: Environmental Division