Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 10, 2010
Accepted November 15, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

Nanoclays as nano adsorbent for oxidation of H2S into elemental sulfur

Ali Mohamadalizadeh^† Jafar Towfighi Alimorad Rashidi¹ Mehrdad Manteghian Ali Mohajeri² Rohollah Arasteh¹

Department of Chemical Engineering, Tarbiat Modares University, P. O. Box 14115-143, Tehran, Iran ¹Nanotechnology Research Center, Research Institute of Petroleum Industry, Iran ²Gas division, Research Institute of Petroleum Industry, Iran

alizadehsa@ripi.ir

Korean Journal of Chemical Engineering, May 2011, 28(5), 1221-1226(6), 10.1007/s11814-010-0486-y

Download PDF

Abstract

Modified bentonites were used for the oxidation of H2S into elemental sulfur. Active phases such as iron and cobalt sulfide were added to supports Cloisite 30B and 15A. The produced nano adsorbents were characterized by X-Ray diffraction, ICP, BET surface area and SEM. Selective oxidation of H2S was carried out over the nano adsorbent in the experimental setup. The tests were performed at 70 and 180 ℃, under atmospheric pressure and in the presence of 5,000 ppm of H2S in the inlet gas stream. The results confirmed the increase in the distribution of active_x000D_ metals and activity of Cloisite 30B, in comparison with Cloisite 15A. Cobalt-containing support showed significant improvement in the capacity of H2S removal, and in the outlet stream less than 50 ppm of H2S was detected.

Keywords

Hydrogen Sulfide Modified Bentonite Iron Sulfide Cobalt Sulfide Adsorption

References

Wang R, Sep. Purif. Technol., 31(1), 111 (2003)
Sasaoka E, Hirano S, Kasaoka S, Sakata Y, Energy Fuels, 8(5), 1100 (1994)
Elsner MP, Menge M, Muller C, Agar DW, Catal. Today, 79(1-4), 487 (2003)
Van Den Brink P, Geus JW, US Patent, 5,286,697 (1994)
Berben PH, Geus JW, US Patent, 4,818,740 (1989)
Connock L, Sulphur., 257, 34 (1998)
Truong LVA, Abatzoglou N, Biomass Bioenerg., 29(2), 142 (2005)
Chun SW, Jang JY, Park DW, Woo HC, Chung JS, Appl. Catal. B: Environ., 16(3), 235 (1998)
Keller N, Pham-Huu C, Ledoux MJ, Appl. Catal. A: Gen., 217(1-2), 205 (2001)
Nguyen P, Edouard D, Nhut JM, Ledoux MJ, Pham C, Pham-Huu C, Appl. Catal. B: Environ., 76(3-4), 300 (2007)
Ania CO, Bandosz TJ, Energy Fuels, 20(3), 1076 (2006)
Bandosz TJ, Le Q, Carbon., 36, 39 (1998)
Bagreev A, Bandoz TJ, Carbon., 39, 2303 (2001)
Wang L, Cao B, Wang SD, Yuan Q, Chem. Eng. J., 118(3), 133 (2006)
Wang L, Cao B, Wang SD, Yuan Q, Chem. Eng. J., 118(3), 133 (2006)
Nahin PG, Sherbarne JE, US Patent, 2,243,049 (1960)
Krishna B, Prakash D, Appl. Clay Sci., 20, 65 (2001)
Mikhail S, Zaki T, Khalil L, Appl. Catal. A: Gen., 227(1-2), 265 (2002)
Adib A, Bagreev A, Bandosz TJ, Environ. Sci. Technol., 34, 686 (2000)
Nguyen-Thanh D, Bandosz TJ, Carbon., 43, 359 (2005)
Nguyen D, Bandosz T, Micropor. Mesopor., 92, 47 (2006)
Stepova K, Maquarrie D, Krip I, Appl. Clay Sci., 42, 625 (2009)
Yilmaza O, Cheaburub CN, Durraccioc D, Gulumsera G, Vasileb C, Appl. Clay Sci., 49, 288 (2010)
Primavera A, Trovarelli A, Andreussi P, Dolcetti G, Appl. Catal. A: Gen., 173(2), 185 (1998)
Nhut JM, Nguyen P, Huu CP, Keller N, Ledoux MJ, Catal. Today., 92, 91 (2004)