Modelling of Adsorption Kinetic and Equilibrium Isotherms of Hydrogen Sulfide onto Hydrogel Biochar Adsorbent

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    Every process produces byproducts, and it can be dangerous or not. Hydrogen sulfide (H2S) is one of the dangerous byproducts produced. In order to prevent hydrogen sulfide from harming workers or residents, a control system is required. Currently, all industries have a control system such as an adsorption system, to control dangerous component such as H2S. In order to optimize the adsorption system, research is required. Researching using laboratory method is very dangerous due to the harmful nature of H2S. Thus, isotherm and kinetic model is used as an alternative method, as it doesn’t involve H2S usage in laboratory. Each isotherm model and kinetic model equation has different uses for adsorption process. The main objective of this experiment is to find the most suitable equation for adsorption of hydrogen sulfide. The isotherm models used were Langmuir, Freundlich and Elovich, while kinetic models used were Pseudo-First Order and Pseudo-Second Order. Suitability of equation was determined by correlation coefficient (R2). The higher the R2, the more suitable the equation is to process. After the result obtained, comparison was done, comparing R2 of each model. It was found that the most suitable isotherm and kinetic model were Elovich model and Pseudo-Second Order model respectively.  R2 for Elovich model was 0.9686; the highest correlation coefficient among isotherms, while R2 for Pseudo-Second Order model was 0.9284, highest among kinetic models.

     

     


  • Keywords


    Adsorption, Elovich, Freundlich, Hydrogen sulfide; Isotherm model; Kinetic model; Langmuir; Pseudo-First Order; Pseudo-Second Order.

  • References


      [1] Jiang, J., Chan, A., Ali, S., Saha, A., Haushalter, K. J., Lam, W.-L. M., Boss, G. R. (2016). Hydrogen Sulfide—Mechanisms of Toxicity and Development of an Antidote. Scientific Reports, 6(1), 20831. https://doi.org/10.1038/srep20831

      [2] Habeeb, O., & Kanthasamy, R. (2017). Kinetic , Isotherm and Equilibrium Study of Adsorption of Hydrogen Sulfide From Wastewater Using Modified Eggshells, (June).

      [3] Heinonen, A. K. (2012). Adsorption of hydrogen sulfide using modified cellulose nano/micro crystals. Lappeenranta University of Technology.

      [4] Zulkefli, N. N., Masdar, M. S., Isahak, W. R. W., Jahim, J., Majlan, E. H., Rejab, S. A. M., & Lye, C. C. (2017). Mathematical modelling and simulation on the adsorption of Hydrogen Sulfide (H 2 S) gas. IOP Conference Series: Materials Science and Engineering, 206(001), 012069. https://doi.org/10.1088/1757-899X/206/1/012069

      [5] Ortiz, F. G., Aguilera, P., & Ollero, P. (2014). Modeling and simulation of the adsorption of biogas hydrogen sulfide on treated sewage–sludge. Chemical Engineering Journal, 305–315.

      [6] Bajpai, A. K., & Rajpoot, M. (1999). Adsorption techniques - a review. Journal of Scientific and Industrial Research, 58(11), 844–860.

      [7] Ho, N. (2012). Modeling Hydrogen Sulfide Adsorption by Activated Carbon made from Anaerobic Digestion By-Product. Department of Chemical Engineering and Applied Chemistry, University of Toronto.

      [8] Lau, L. C., MohamadNor, N., Lee, K. T., & Mohamed, A. R. (2016). Adsorption Isotherm, Kinetic, Thermodynamic and Breakthrough Curve Models of H2S Removal Using CeO2/NaOH/PSAC. International Journal of Petrochemical Science & Engineering, 1-10.

      [9] Aly, Z., Graulet, A., Scales, N., & Hanley, T. (2014). Removal of aluminium from aqueous solutions using PAN-based adsorbents: Characterisation, kinetics, equilibrium and thermodynamic studies. Environmental Science and Pollution Research, 21(5), 3972–3986. https://doi.org/10.1007/s11356-013-2305-6

      [10] Ayawei, N., Ebelegi, A. N., & Wankasi, D. (2017). Modelling and Interpretation of Adsorption Isotherms. Journal of Chemistry, 2017. https://doi.org/10.1155/2017/3039817

      [11] Markandeya, Shukla, S., & Kisku, G. (2015). Linear and Non-Linear Kinetic Modeling for Adsorption of Disperse Dye in Batch Process. Research Journal of Environmental Toxicology, 320-331.

      [12] A.O, D. (2012). Langmuir, Freundlich, Temkin and Dubinin–Radushkevich Isotherms Studies of Equilibrium Sorption of Zn 2+ Unto Phosphoric Acid Modified Rice Husk. IOSR Journal of Applied Chemistry, 3(1), 38–45. https://doi.org/10.9790/5736-0313845

      [13] Farouq, R., & Yousef, N. S. (2015). Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent. International Journal of Chemical Engineering and Applications, 6(5), 319–324. https://doi.org/10.7763/IJCEA.2015.V6.503

      [14] Qiu, H., Lv, L., Pan, B., Zhang, Q., Zhang, W., & Zhang, Q. (2009). Critical review in adsorption kinetic models. Journal of Zhejiang University-SCIENCE A, 10(5), 716–724. https://doi.org/10.1631/jzus.A0820524

      [15] Meri, N. H., Bahari, A., Talib, N., & Abdul, Z. (2017). Effect of Washing Pre-treatment of Empty Fruit Bunch Hydrogel Biochar Composite Properties as Potential Adsorbent, 56, 1255–1260. https://doi.org/10.3303/CET1756210


 

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Article ID: 21972
 
DOI: 10.14419/ijet.v7i4.18.21972




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