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Licensed Unlicensed Requires Authentication Published by De Gruyter October 4, 2014

A Mathematical Modeling and Experimental Study on Adsorptive Desulfurization of Model Gasoline Using Synthesized Ni–Y and Ce–Y Zeolites

  • Maryam Montazerolghaem , Amir Rahimi EMAIL logo and Fakhry Seyedeyn-Azad

Abstract

In this study, Ni–Y and Ce–Y zeolites are prepared using synthesized Na–Y zeolite through solid-state ion-exchange method. The adsorptive desulfurization of a model gasoline containing 194, 116 and 72 ppmw sulfur is evaluated in a batch system under ambient conditions. A dynamic model is established in order to investigate the performance of the adsorption process. The model predictions are compared with the obtained experimental results for thiophene adsorption on Ni–Y and Ce–Y zeolites from model solution containing different concentrations of thiophene, and a good agreement is observed. The model parameters: diffusivity and mass transfer coefficient are estimated by comparing the model predictions and experimental data.

Acknowledgment

The support from the Isfahan refinery (R&D and Laboratory) is gratefully acknowledged.

Nomenclature

a

specific surface area, m2 g−1

CA

the concentration of sulfur in the fluid inside the pore, ppmw

CAb

the concentration of sulfur in the bulk solution, ppmw

Cinb

initial concentration of sulfur in the bulk solution, ppmw

C*

the sulfur concentration in the liquid phase at equilibrium with the adsorbed sulfur in the solid, ppmw

DA

internal diffusion coefficient of sulfur inside the adsorbent pellet, m2 s−1

K

mass transfer coefficient, m s−1

L

height of the adsorbent pellet, m

MA

molecular weight of adsorbate, kg kmol−1

q

the sulfur sorbed per unit mass of adsorbent, mg g−1

qm

constant parameter of Langmuir isotherm

R

radius of the adsorbent pellet, m

V

volume of the liquid phase, m3

Greek symbols
α

constant parameter of Langmuir isotherm

εp

porosity of the pellet

ρr

actual density of adsorbent, kg m−3

References

1. XiaoJ, LiZ, LiuB, XiaQ, YuM. Adsorption of benzothiophene and dibenzothiophene on ion-impregnated activated carbons and ion-exchanged Y-zeolites. Energy Fuels2008;22:385863.10.1021/ef800437eSearch in Google Scholar

2. LongZ, YangC, ZengG, PengL, DaiC, HeH. Catalytic oxidative desulfurization of dibenzothiophene using catalyst of tungsten supported on resin D152. Fuel2014;130:1924.10.1016/j.fuel.2014.04.005Search in Google Scholar

3. LiF, XuP, FengJ, MengL, ZhY, LuoL, et al. Microbial desulfurization of gasoline in a mycobacterium goodie X7B immobilized-cell system. Appl Environ Microbiol2005;71:27681.10.1128/AEM.71.1.276-281.2005Search in Google Scholar

4. WangJ, ChenC. Biosorption of heavy metals by Saccharomyces cerevisiae: a review. Biotechnol Adv2006;24:42751.10.1016/j.biotechadv.2006.03.001Search in Google Scholar

5. WangJ, ChenC. Biosorbents for heavy metals removal and their future. Biotechnol Adv2009;27:195226.10.1016/j.biotechadv.2008.11.002Search in Google Scholar

6. XueM, ChitrakarR, SakaneK, HirotsuT, OoiK, YoshimuraY, et al. Selective adsorption of thiophene and 1-benzothiophene on metal-ion-exchanged zeolites in organic medium. J Colloid Interface Sci2005;285:48792.10.1016/j.jcis.2004.12.031Search in Google Scholar

7. YangRT, Hernandez-MaldonadoAJ, YangFH. Desulfurization of transportation fuels with zeolites under ambient conditions. Science (Washington, DC)2003;301:7981.10.1126/science.1085088Search in Google Scholar

8. VeluS, MaX, SongC. Selective adsorption for removing sulfur from jet fuel over zeolite-based adsorbents. Ind Eng Chem Res2003;42:5293304.10.1021/ie020995pSearch in Google Scholar

9. VeluS, SongC, EngelhardMH, ChinYH. Adsorptive removal of organic sulfur compounds from jet fuel over K-exchanged NiY zeolites prepared by impregnation and ion exchange. Ind Eng Chem Res2005;44:57409.10.1021/ie0488492Search in Google Scholar

10. SongC, MaX. New design approaches to ultra-clean diesel fuels by deep desulfurization and deep dearomatization. Appl Catal B2003;41:20738.10.1016/S0926-3373(02)00212-6Search in Google Scholar

11. XueM, ChitrakarR, SakaneK, HirotsuT, OoiK, YashimuraY, et al. Preparation of cerium-loaded Y-zeolites for removal of organic sulfur compounds from hydrodesulfurizated gasoline and diesel oil. J Colloid Interface Sci2006;298:53542.10.1016/j.jcis.2005.12.051Search in Google Scholar

12. WangJ, XuF, XieWJ, MeiZJ, ZhangQZ, CaiJ, et al. The enhanced adsorption of dibenzothiphene onto cerium/nickel-exchanged zeolite Y. J Hazard Mater2009;163:53843.10.1016/j.jhazmat.2008.07.027Search in Google Scholar

13. DasguptaS, AgnihotriV, GuptaP, NanotiA, GargMO, GoswamiAN. Simulation of a fixed bed adsorber for thiophene removal. Catalysis Today2009;141:848.10.1016/j.cattod.2008.04.005Search in Google Scholar

14. ShamsA, DehkordiAM, GoodarzniaI. Desulfurization ofliquid-phase butane by zeolite molecular sieve 13x in a fixed bed: modeling, simulation, and comparison with commercial-scale plant data. Energy Fuels2008;22:5705.10.1021/ef700500xSearch in Google Scholar

15. RobsonH. How to read a patentMicroporous Mesoporous Mater1998;22:551666.10.1016/S1387-1811(98)80022-XSearch in Google Scholar

16. MontazerolghaemM, Seyedeyn-AzadF, RahimiA. The performance of pelletized Ce–Y and Ni–Y zeolites for removal of thiophene from model gasoline solutions. Korean J Chem Eng2014;accepted.10.1007/s11814-014-0213-1Search in Google Scholar

17. UOP 357-80. Laboratory test method for petroleum its products. Universal Oil Products, Des Plaines, IL, 1992.Search in Google Scholar

18. Miran BeigiAA, TeymouriM, EslamiM, FarazmandM. Determination of trace sulfur in organic compounds by activated Raney nickel desulfurization method with non-dispersive gas detection system. Analyst1999:76770.10.1039/a809599jSearch in Google Scholar

19. AnnaduriG, LingLY, LeeJF. Adsorption of reactive dyefrom an aqueous solution by chitosan: isotherm, kinetic and thermodynamic analysis. J Hazard Mater2008;152:33746.10.1016/j.jhazmat.2007.07.002Search in Google Scholar

20. HuangY, MaX, LiangG, YanY, WangSh. Adsorption behavior of Cr(VI) on organic-modified rectorite. Chem Eng J2008;138:18793.10.1016/j.cej.2007.06.017Search in Google Scholar

21. SarkarM, AcharyaPK, BhattacharyaB. Modeling the adsorption kinetics of some priority organic pollutants in water from diffusion and activation energy parameters. J Colloid Interface Sci2003;266:2832.10.1016/S0021-9797(03)00551-4Search in Google Scholar

22. MontazerolghaemM, RahimiA, Seyedeyn-AzadF. Equilibrium and kinetic modeling of adsorptive sulfur removal from gasoline by synthesized Ce-Y zeolite. Appl Surf Sci2010;257:6039.10.1016/j.apsusc.2010.07.042Search in Google Scholar

23. TreybalRE. Mass transfer operations, 3rd ed.New York: McGraw-Hill,2001.Search in Google Scholar

Published Online: 2014-10-4
Published in Print: 2014-12-1

©2014 by De Gruyter

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