Regeneration of activated carbons saturated with pyridine or phenol using supercritical water oxidation method enhanced with hydrogen peroxide

T. Charinpanitkul; W. Tanthapanichakoon

Journal of Industrial and Engineering Chemistry, Vol.17, No.3, 570-574, May, 2011

DOI10.1016/j.jiec.2010.10.019 Export Citation

Regeneration of activated carbons saturated with pyridine or phenol using supercritical water oxidation method enhanced with hydrogen peroxide

T. Charinpanitkul^{1, 2, †}, and W. Tanthapanichakoon¹

¹Center of Excellence in Particle Technology (CEPT), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
²Energy Research Institute (ERI), Chulalongkorn University, Bangkok 10330, Thailand

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While activated carbon (AC) is widely employed for treating water resources contaminated with hazardous organic compounds, regeneration of AC after saturation has been a concerning issue. Supercritical water oxidation (SCWO) in a batch reactor was used to regenerate two commercial activated carbons (CAL and COCO) saturated with pyridine or phenol. BET surface area, pore volume and pore size distribution of CAL and COCO were characterized before and after their regeneration. Decomposition of pyridine and phenol was examined at 400, 450, 525 ℃ with the presence or absence of hydrogen peroxide. The SCWO regeneration efficiency was determined from the amount of pyridine or phenol adsorbed and desorbed in successive adsorption-regeneration cycles. Effects of SCWO on adsorption capacity of CAL and COCO were experimentally investigated. With SCWO enhanced by H2O2, adsorbed organic compounds could be converted to carbon dioxide, hydrogen and nitrogen.

Keywords:Activated carbon;Regeneration;Pyridine;Phenol;Supercritical water oxidation

[References]

Mohan D, Singh KP, Sinha S, Gosh D, Carbon., 42, 2409 (2004)
Brown KD, Kulis J, Thomson B, Chapman TH, Mawhinney DB, Sci. Total Environ., 366, 772 (2006)
Ruthven DM, Principles of Adsorption and Adsorption Processes, John Wiley & Sons, New York (1984)
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Charinpanitkul T, Limsuwan P, Chalotorn C, Sano N, Yamamoto T, Tongpram P, Wongsarivej P, Soottitantawat A, Tanthapanichakoon W, J. Ind. Eng. Chem., 16(1), 91 (2010)
Rivera-Utrilla J, Ferro-Garcia MA, Bautista-Toledo I, Sanchez-Jimenez C, Salvador F, Merchan MD, Water Res., 37, 1905 (2003)
Tanthapanichakoon W, Sittipraneed S, Japthong P, Charinpanitkul T, Boon-Amnuayvitaya V, Nakagawa K, Tamon H, J. Chem. Eng. Jpn., 39(6), 661 (2006)
Volkmann H, Schwartz T, Bischoff P, Kirchen S, Obst U, J. Microbiol. Methods., 56, 277 (2004)
Salvador F, Sanchez Jimenez C, Carbon., 37, 577 (1999)
Aki SNVK, Abraham MA, Chem. Eng. Sci., 54(15-16), 3533 (1999)
Salvador F, Sanchez Jimenez C, Carbon., 34, 511 (1996)
Jung MJ, Kim JW, Im JS, Park SJ, Lee YS, J. Ind. Eng. Chem., 15(3), 410 (2009)

[Referenced By]

[1] Mohan D, Singh KP, Sinha S, Gosh D, Carbon., 42, 2409 (2004)

[2] Brown KD, Kulis J, Thomson B, Chapman TH, Mawhinney DB, Sci. Total Environ., 366, 772 (2006)

[3] Ruthven DM, Principles of Adsorption and Adsorption Processes, John Wiley & Sons, New York (1984)

[4] Hwang EH, Ko YS, Jeon JK, J. Ind. Eng. Chem., 13(3), 387 (2007)

[5] Charinpanitkul T, Limsuwan P, Chalotorn C, Sano N, Yamamoto T, Tongpram P, Wongsarivej P, Soottitantawat A, Tanthapanichakoon W, J. Ind. Eng. Chem., 16(1), 91 (2010)

[6] Rivera-Utrilla J, Ferro-Garcia MA, Bautista-Toledo I, Sanchez-Jimenez C, Salvador F, Merchan MD, Water Res., 37, 1905 (2003)

[7] Tanthapanichakoon W, Sittipraneed S, Japthong P, Charinpanitkul T, Boon-Amnuayvitaya V, Nakagawa K, Tamon H, J. Chem. Eng. Jpn., 39(6), 661 (2006)

[8] Volkmann H, Schwartz T, Bischoff P, Kirchen S, Obst U, J. Microbiol. Methods., 56, 277 (2004)

[9] Salvador F, Sanchez Jimenez C, Carbon., 37, 577 (1999)

[10] Aki SNVK, Abraham MA, Chem. Eng. Sci., 54(15-16), 3533 (1999)

[11] Salvador F, Sanchez Jimenez C, Carbon., 34, 511 (1996)

[12] Jung MJ, Kim JW, Im JS, Park SJ, Lee YS, J. Ind. Eng. Chem., 15(3), 410 (2009)