Studying Isotherm, Kinetics, and Thermodynamic Parameters of Heat-Stable Acetate Salt Adsorption from Amine Solution by Anion Ion-Exchange Resin

Bayati, Behrouz; Morshedi, Pardis; Falahi, Akbar; Kikhavandi, Towan

doi:10.22050/ijogst.2023.382722.1666

Studying Isotherm, Kinetics, and Thermodynamic Parameters of Heat-Stable Acetate Salt Adsorption from Amine Solution by Anion Ion-Exchange Resin

Document Type : Research Paper

Authors

Behrouz Bayati ¹

pardis morshedi ²

Akbar Falahi ³

Towan Kikhavandi ⁴

¹ Associate Professor, Chemical Engineering Department, Faculty of Engineering, Ilam University, Ilam, Iran

² B.S. Student, Chemical Engineering Department, Faculty of Engineering, Ilam University, Ilam, Iran

³ M.S. Student, Chemical Engineering Department, Faculty of Engineering, Ilam University, Ilam, Iran

⁴ Assistant Professor, Chemical Engineering Department, Faculty of Engineering, Ilam University, Ilam, Iran

https://doi.org/10.22050/ijogst.2023.382722.1666

Abstract

The formation of heat-stable salts (HSS), such as acetate, formate, oxalate, and thiosulfate, in gas-sweetening units creates various issues, including corrosion, high foaming, and reduced unit efficiency. This research aims to investigate eliminating heat-stable salts using an anion-exchange resin. The findings indicated that removing approximately 85% of acetate anion salt from an amine solution at a solution-to-resin ratio of 30 was feasible. Two adsorption models, Langmuir and Freundlich, were employed to analyze the equilibrium adsorption of acetate anion salt. The results indicated that the Langmuir adsorption isotherm aligned more closely with the data obtained from the acetate anion ion exchange process with the resin. Furthermore, it was determined that the maximum adsorption capacity for acetate onto the resin was 15 mg/g at a temperature of 25 °C. The impact of contact time during adsorption was examined using quasi-first-order and quasi-second-order kinetic models and an intra-particle model. The results indicated that the quasi-first-order kinetic model provided the best fit to the data, and equilibrium adsorption was achieved after approximately 70 min. Thermodynamic parameters were also investigated, revealing a ΔH value of –12.7370 kJ/mol, indicating an exothermic adsorption process. Based on the studies, utilizing the selected resin appears to be a suitable option for removing heat-stable salts.

Highlights

Heat-stable salt (HSS) removal was studied by ion-exchange resin;
Kinetics and isotherm of HSSs and particularly acetate anion were investigated;
Maximum anion adsorption happens at low temperatures;
Langmuir adsorption isotherm is more consistent with the data resulting from acetate-anion ion exchange.

Keywords

ion-exchange resin

heat stable salts (HSS)

adsorption equilibrium isotherms

kinetics

thermodynamic parameters

Subjects

Chemical Engineering

Alhseinat, E., Palm, P., Keewan P., Banat, P., Foaming study combined with physical characterization of aqueous MDEA gas sweetening solutions. Journal of Natural Gas Science and Engineering, Vol. 17, No. 1, p. 49–57, 2014

Alnaimat, F., Alhseinat, E., and Banat, F., Electromagnetic separation of heat stable salt from gas sweetening amine, International Journal of Greenhouse Gas Control, Vol. 68, p. 256–268, 2018.

Arora, N., F. Banat, and E. Alhseinat, Capacitive deionization performance of CNTs-Si-Ag based electrodes for removing heat stable salts from methyl diethanolamine (MDEA) solution in natural gas sweetening units, Chemical Engineering Journal, Vol. 356, p. 400–412, 2019.

Banat, F., O. Younas, and I. Didarul, Energy and exergical dissection of a natural gas sweetening plant using methyldiethanol amine (MDEA) solution, Journal of Natural Gas Science and Engineering, Vol. 16, p. 1–7, 2014.

Bayati, B., Mirshekari, M., Veisy, A., and Gando-Ferreira, Licínio M., Removal of HSS from industrial amine solution by anionic resin (case study: Ilam gas refinery). Chemical Papers, Vol. 73, No. 2, p. 491–500, 2019.

Bazhenov, S., Rieder, A., Schallert, B., Vasilevsky, V., Unterberger, S., Grushevenko, E., Volkov, V., and Volkov, A., Reclaiming of degraded MEA solutions by electrodialysis: Results of ED pilot campaign at post-combustion CO₂ capture pilot plant. International Journal of Greenhouse Gas Control, Vol 42, p. 593–601, 2015.

Chabani, M., Amrane, A., and Bensmaili A., Equilibrium sorption isotherms for nitrate on resin Amberlite IRA 400. Journal of hazardous materials, Vol. 165, No. 1–3, p. 27–33, 2009.

Chabani, M., Amrane, A., and Bensmaili, A., Kinetics of nitrates adsorption on Amberlite IRA 400 resin. Desalination, Vol. 206, No. 1–3, p. 560–567, 2007.

Chabani, M., A. Amrane, and A. Bensmailia, Kinetic modeling of liquid-phase adsorption of nitrates on the ionized adsorbent. Desalination, Vol. 197, No. 1–3, p. 117–123, 2006.

Cho, J.-H., Jeon, S.-B., Yang, K.-S., Seo, J.-B., Cho, S.-W., and Oh, K.-J., Regeneration of heat stable salts-loaded anion exchange resin by a novel zirconium pentahydroxide [Zr (OH)₅⁻] displacement technique in the CO₂ absorption process. Separation and Purification Technology, Vol. 156, p. 465–471, 2015.

Fouad, W.A. and Berrouk, A.S., Using mixed tertiary amines for gas sweetening energy requirement reduction. Journal of Natural Gas Science and Engineering, Vol. 11, p. 12–17, 2013.

Ghorbani, A., Bayati, B., and Kikhavani, T., Modelling Ion Transport in an Amine Solution Through a Nanofiltration Membrane. Brazilian Journal of Chemical Engineering, Vol. 36, No. 4, p. 1667–1677, 2019.

Ghorbani, A., Bayati, B., Poerio, T., Argurio, P., Kikhavani, T., Namdari, M., and Ferreira, L. M., Application of NF Polymeric Membranes for Removal of Multicomponent Heat-Stable Salts (HSS) Ions from Methyl Diethanolamine (MDEA) Solutions. Molecules, Vol. 25, No. 21, p. 4911, 2020.

Haghsheno, R., Mohebbi, A., Hashemipour, H., and Sarrafi, A., Study of kinetic and fixed bed operation of removal of sulfate anions from industrial wastewater by an anion exchange resin. Journal of hazardous materials, Vol. 166, No. 2–3, p. 961–966, 2009.

Hai, A., Vengatesan, M. R., Zain, J. H., Abou-Khousa, M., and Banat, F., Design and optimization of a concentric setup for the separation of Heat Stable Salts from industrial lean amine solution using electromagnetic forces. International Journal of Greenhouse Gas Control, 2020. 101: p. 103137.

Azadmanesh, H., Atef, M. M., and Ghadi, A., Laboratory investigation removal of heat stable salt anions and chloride from industrial lean amine solvent using anion exchange resin in the first refinery of SPGC, First international conference in petroleum and petrochemical HSE, Hamadan, 2017.

Ho, Y. S., and McKa, G., Pseudo-second order model for sorption processes. Process Biochemistry, Ho, Y. S., and McKa, G., Vol. 34, No. 5, p. 451–465, 1999.

Hojjat, R., Sh. Bahram Hashemi and Sh. Ahmad, separation of heat stable salts, the first Iranian petrochemical conference. 1387.

Jaafari, L., Jaffary, B., and Idem, R., Screening study for selecting new activators for activating MDEA for natural gas sweetening, Separation and Purification Technology, Vol. 199, p. 320–330, 2018.

Jassim, M.S., Sensitivity analyses and optimization of a gas sweetening plant for hydrogen sulfide and carbon dioxide capture using methyl diethanolamine solutions. Journal of Natural Gas Science and Engineering, Vol. 36, p. 175–183, 2016.

Lim, J., Scholes, C. A., Dumée, L. F., and Kentish, S. E., Nanofiltration for the concentration of heat stable salts prior to MEA reclamation, International Journal of Greenhouse Gas Control, Vol. 30, p. 34–41, 2014.

Manteghian, M. and J. Haddad, Reduction of chloride in amine from gas sweetening unit using a continuous virtual countercurrent ion exchange setup. Journal of Natural Gas Science and Engineering, Vol. 56, p. 568–578, 2018.

Meng, H., Zhang, S., Li, C., and Li, L., Removal of heat stable salts from aqueous solutions of N-methyldiethanolamine using a specially designed three-compartment configuration electrodialyzer. Journal of Membrane Science, Vol. 322, No. 2, p. 436–440, 2008.

Mesgarian, R. Corrosion management in gas treating plants (GTPs): comparison between corrosion rate of DEA and MDEA a case study in sour gas refinery. In International Conference on Industrial Engineering and Operations Management, Bali, Indonesia. January. 2014.

Mohamadi‑Baghmolaei, M., Hajizadeh, A., Zahedizadeh, P., Azin, R., and Zendehboudi, S., Evaluation of the hybridized performance of amine scrubbing plant based on exergy, energy, environmental, and economic prospects: A gas sweetening plant case study, Energy, Vol. 214, p. 118715, 2021.

Nethaji, S., Sivasamy, A., and Mandal, A., Adsorption isotherms, kinetics and mechanism for the adsorption of cationic and anionic dyes onto carbonaceous particles prepared from Juglans regia shell biomass. International Journal of Environmental Science and Technology, Vol. 10, No. 2, p. 231–242, 2013.

Pal, P., Banat, F., and Alshoaibi, A., Adsorptive removal of heat stable salt anions from industrial lean amine solvent using anion exchange resins from gas sweetening unit. Journal of Natural Gas Science and Engineering, Vol. 15, p. 14–21, 2013.

Rooney, P., Dupart, M., and Bacon, T., Effect of heat stable salts on MDEA solution corrosivity: Part 2. Hydrocarbon Processing, Vol. 76, No. 4, 1997.

Verma, N. and A. Verma, Amine system problems arising from heat stable salts and solutions to improve system performance. Fuel Processing Technology, 2009. 90(4): p. 483–489.

Volkov, A., Vasilevsky, V., Bazhenov, S., Volkov, V., Rieder, A., Unterberger, S., and Schallert, B., Reclaiming of monoethanolamine (MEA) used in post-combustion CO₂–capture with electrodialysis. Energy Procedia, Vol. 51, p. 148–153, 2014.

Wang, J. and K. Wu, The design for ion exchange column, BSc. Thesis, Process and Food Technology/The Hague University, 66, 2015.

Wang, Y., Li, W., Yan, H., and Xu, T., Removal of heat stable salts (HSS) from spent alkanolamine wastewater using electrodialysis, Journal of Industrial and Engineering Chemistry, Vol. 57, p. 356–362, 2018.

Yang, J., M. Yu, and T. Qiu, Adsorption thermodynamics and kinetics of Cr (VI) on KIP210 resin. Journal of Industrial and Engineering Chemistry, Vol. 20, No. 2, p. 480–486, 2014.

Zhang, N., Zeng, D., Xiao, G., Shang, J., Liu, Y., Long, D., He, Q., and Singh, A., Effect of Cl⁻ accumulation on corrosion behavior of steels in H₂S/CO₂ methyl diethanolamine (MDEA) gas sweetening aqueous solution. Journal of Natural Gas Science and Engineering, Vol. 30, p. 444–454, 2016.