Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment

CIESC Journal ›› 2011, Vol. 19 ›› Issue (1): 76-82.

Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment

Wongsarivej Pratarn¹, Tongprem Pornsiri¹, Swasdisevi Thanit², Charinpanitkul Tawatchai³, Tanthapanichakoon Wiwut³

1. National Nanotechnology Center, Thailand Science Park, Klong Luang, Pathumthani 12120, Thailand;
2. School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, 126 Pracha u-tid Rd., Bangkok 10140, Thailand;
3. Center of Excellence in Particle Technology, Faculty of Engineering, Chulalongkorn University, Payathai Rd., Wangmai, Pathumwan, Bangkok 10330, Thailand

收稿日期:2010-06-02 修回日期:2010-12-27 出版日期:2011-02-28 发布日期:2011-02-28
通讯作者: Wongsarivej Pratarn, E-mail: pratarn@nanotec.or.th
基金资助:
Supported by the National Nanotechnology Center(NANOTEC)(601003);the National Science and Technology Development Agency(NSTDA)

Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment

Wongsarivej Pratarn¹, Tongprem Pornsiri¹, Swasdisevi Thanit², Charinpanitkul Tawatchai³, Tanthapanichakoon Wiwut³

1. National Nanotechnology Center, Thailand Science Park, Klong Luang, Pathumthani 12120, Thailand;
2. School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, 126 Pracha u-tid Rd., Bangkok 10140, Thailand;
3. Center of Excellence in Particle Technology, Faculty of Engineering, Chulalongkorn University, Payathai Rd., Wangmai, Pathumwan, Bangkok 10330, Thailand

Received:2010-06-02 Revised:2010-12-27 Online:2011-02-28 Published:2011-02-28
Supported by:
Supported by the National Nanotechnology Center(NANOTEC)(601003);the National Science and Technology Development Agency(NSTDA)

摘要/Abstract

摘要： A three phase fluidized bed reactor was used to investigate the combined effect of adsorption and oxidation for phenolic wastewater treatment.Aqueous solutions containing 10 mg·L^-1 of phenol and ozone were continuously fed co-currently as upward flow into the reactor at constant flow rate of 2 and 1 L·min^-1,respectively.The phenolic treatment results in seven cases were compared:(a)O₃ only,(b)fresh granular activated carbon(GAC),(c) 1st reused GAC,(d)2nd reused GAC,(e)fresh GAC enhanced with O₃,(f)1st reused GAC enhanced with O₃,and (g)2nd reused GAC enhanced with O₃.The phenolic wastewater was re-circulated through the reactor and its concentration was measured with respect to time.The experimental results revealed that the phenolic degradation using GAC enhanced with O₃ provided the best result.The effect of adsorption by activated carbon was stronger than the effect of oxidation by ozone.Fresh GAC could adsorb phenol better than reused GAC.All cases of adsorption on GAC followed the Langmuir isotherm and displayed pseudo second order adsorption kinetics.Finally,a differential equation for the fluidized bed reactor model was used to describe the phenol concentration with respect to time for GAC enhanced with O₃.The calculated results agree reasonably well with the experimental results.

关键词: adsorption, ozonation, kinetic model, phenol, wastewater

Abstract: A three phase fluidized bed reactor was used to investigate the combined effect of adsorption and oxidation for phenolic wastewater treatment.Aqueous solutions containing 10 mg·L^-1 of phenol and ozone were continuously fed co-currently as upward flow into the reactor at constant flow rate of 2 and 1 L·min^-1,respectively.The phenolic treatment results in seven cases were compared:(a)O₃ only,(b)fresh granular activated carbon(GAC),(c) 1st reused GAC,(d)2nd reused GAC,(e)fresh GAC enhanced with O₃,(f)1st reused GAC enhanced with O₃,and (g)2nd reused GAC enhanced with O₃.The phenolic wastewater was re-circulated through the reactor and its concentration was measured with respect to time.The experimental results revealed that the phenolic degradation using GAC enhanced with O₃ provided the best result.The effect of adsorption by activated carbon was stronger than the effect of oxidation by ozone.Fresh GAC could adsorb phenol better than reused GAC.All cases of adsorption on GAC followed the Langmuir isotherm and displayed pseudo second order adsorption kinetics.Finally,a differential equation for the fluidized bed reactor model was used to describe the phenol concentration with respect to time for GAC enhanced with O₃.The calculated results agree reasonably well with the experimental results.

Key words: adsorption, ozonation, kinetic model, phenol, wastewater

Wongsarivej Pratarn, Tongprem Pornsiri, Swasdisevi Thanit, Charinpanitkul Tawatchai, Tanthapanichakoon Wiwut. Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment[J]. CIESC Journal, 2011, 19(1): 76-82.

参考文献

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Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment

Adsorption and Ozonation Kinetic Model for Phenolic Wastewater Treatment

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