Removal of Phenol from Water: A Comparison of Energization Methods

Author： Grabowski Lukas R.   van Veldhuizen Eddie M.   Rutgers Wijnand R.  

Publisher： Science and Technology Network Inc.

ISSN： 1203-8407

Source： Journal of Advanced Oxidation Technologies, Vol.8, Iss.2, 2005-07, pp. : 142-149

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

Direct electrical energization methods for removal of persistent substances from water are under investigation in the framework of the ytriD-project. The emphasis of the first stage of the project is the energy efficiency. A comparison is made between a batch reactor with a thin layer of water and an aerosol reactor. The method of energization is mainly the application of fast pulses. In case of the batch reactor it is compared with DC. The ozone concentration is determined as an indicator for the efficiency of the chemical reactions, the yield is 4 g/kWh for the DC batch reactor, 50 g/kWh for the pulsed batch reactor and 50-100 g/kWh for the aerosol reactor. For initial testing phenol degradation is determined. 50% of the initial 0.1 mM is reached in 8 min in the pulsed batch reactor and less than 30 s in the aerosol reactor. The phenol removal speeds up by a factor 3 upon the addition of Fe-ions. Matlab simulations confirm that the surface-to-volume ratio is an important parameter for the speed of phenol degradation.

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