Adsorption of Mercury Using Different Types of Activated Bentonite: A Study of Sorption, Kinetics, and Isotherm Models

Muhammad Naswir, Jalius Jalius, Desfaur Natalia, Susila Arita, Yudha Gusti Wibowo


Mercury is a hazardous element because of its toxicity and harmful effects on human health. Various traditional and low-cost methods have been developed to remove mercury from wastewater. This study used local raw material as an alternative adsorbent to treat mercury-contaminated wastewater. Activated bentonite was prepared using different chemical activators (H3PO4, HCl, and ZnCl2) in various concentrations. Then, it was dried at 200°C for an hour. The materials were characterized by SEM-EDS. Its percent removal and isotherm models were analyzed. In this study, the most effective activator was H3PO4 and the experimental data matched the Freundlich model.



Activated bentonite; mercury; wastewater treatment; Chemical activators

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Al-Ghouti, M. A., & Da’ana, D. A. (2020). Guidelines for the use and interpretation of adsorption isotherm models: A review. Journal of Hazardous Materials, 393, 122383.

Ayawei, N., Ebelegi, A. N., & Wankasi, D. (2017). Modelling and Interpretation of Adsorption Isotherms. Hindawi: Journal of Chemistry, Article ID, 1–11. Review

Baer, N. S., Tsuge, S., Challinor, J. M., Watt, B. E., Galipo, R. C., Wampler, T. P., Jansson, K., Shedrinsky, A., Maddock, C. J., Morgan, S. L., Munson, T. O., Ottley, T. W., Ohtani, H., & Zawodny, C. (2006). Applied Pyrolysis Handbook.

Bendou, S., & Amrani, M. (2014). Effect of Hydrochloric Acid on the Structural of Sodic-Bentonite Clay. Journal of Minerals and Materials Characterization and Engineering, 2(5), 404–413.

Bruggen, B. Van Der. (2003). Freundlich Isotherm. In Encyclopedia of Membranes (pp. 1–2).

Coggins, A. M., Jennings, S. G., & Ebinghaus, R. (2006). Accumulation rates of the heavy metals lead , mercury and cadmium in ombrotrophic peatlands in the west of Ireland. Atmospheric Environment, 40, 260–278.

Didi, M. A., Makhoukhi, B., Azzouz, A., & Villemin, D. (2009). Applied Clay Science Colza oil bleaching through optimized acid activation of bentonite . A comparative study. Applied Clay Science, 42(3–4), 336–344.

Garg, K. K., & Prasad, B. (2016). Development of Box Behnken design for treatment of terephthalic acid wastewater by electrocoagulation process: Optimization of process and analysis of sludge. Journal of Environmental Chemical Engineering, 4(1), 178–190.

Ge, D., Shi, W., Ren, L., Zhang, F., Zhang, G., Zhang, X., & Zhang, Q. (2006). Variation analysis of affinity-membrane model based on Freundlich adsorption. Journal of Chromatography A, 1114(1), 40–44.

Hebbar, R. S., Isloor, A. M., Prabhu, B., & Abdullah, M. (2018). Removal of metal ions and humic acids through polyetherimide membrane with grafted bentonite. Scientific Reports, 8(March).

Javed, S. H., Zahir, A., Khan, A., Afzal, S., & Mansha, M. (2018). Adsorption of Mordant Red 73 dye on acid activated bentonite: Kinetics and Thermodynamic study. Journal of Molecular Liquids, 254, 398–405.

Lee, S. (2015). Activated bentonite as a low-cost adsorbent for the removal of Cu(II) and Pb(II) from aqueous solutions: Batch and column studies. Journal of Industrial and Engineering Chemistry, 34, 213–223.

Li, C., Tang, H., Duan, Y., Zhu, C., Zheng, Y., & Huang, T. (2018). Synthetic calcium-based adsorbents for gaseous mercury ( II ) adsorption from fl ue gas and study on their mercury adsorption mechanism. Fuel, 234(June), 384–391.

Mambrini, R. V, Saldanha, A. L. M., Ardisson, J. D., Helena, M., & Moura, F. C. C. (2013). Applied Clay Science Adsorption of sulfur and nitrogen compounds on hydrophobic bentonite. Applied Clay Science, 83–84, 286–293.

Mansilla, A. Y., Lanfranconi, M., Alvarez, V. A., & Casalongué, C. A. (2018). Applied Clay Science Development and characterization of bentonite / wGLP systems. Applied Clay Science, 166(September), 159–165.

Naswir, M., Arita, S., Hartati, W., Septiarini, L., Desfaournatalia, D., & Wibowo, Y. G. (2019). Activated Bentonite: Low Cost Adsorbent to Reduce Phosphor in Waste Palm Oil. International Journal of Chemistry, 11(2), 67.

Önal, M., Sarikaya, Y., Alemdaroǧlu, T., & Bozdoǧan, I. (2002). The effect of acid activation on some physicochemical properties of a bentonite. Turkish Journal of Chemistry, 26(3), 409–416.

Panda, A. K., Mishra, B. G., Mishra, D. K., & Singh, R. K. (2010). Colloids and Surfaces A : Physicochemical and Engineering Aspects Effect of sulphuric acid treatment on the physico-chemical characteristics of kaolin clay. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 363(1–3), 98–104.

Sanz-pérez, E. S., Arencibia, A., Sanz, R., & Frini-srasra, N. (2019). Applied Clay Science Amine grafting of acid-activated bentonite for carbon dioxide capture. Applied Clay Science, 180(April), 105195.

Sheta, A. S., Falatah, A. M., Al-Sewailem, M. S., Khaled, E. M., & Sallam, A. S. H. (2003). Sorption characteristics of zinc and iron by natural zeolite and bentonite. Microporous and Mesoporous Materials, 61(1–3), 127–136.

Sidhoum, D. A., Socías-viciana, M. M., Ureña-amate, M. D., Derdour, A., González-pradas, E., & Debbagh-boutarbouch, N. (2013). Applied Clay Science Removal of paraquat from water by an Algerian bentonite. Applied Clay Science, 83–84, 441–448.

Smith, N. M. (2019). “Our gold is dirty, but we want to improve”: Challenges to addressing mercury use in artisanal and small-scale gold mining in Peru. Journal of Cleaner Production, 222, 646–654.

Toor, M., Jin, B., Dai, S., & Vimonses, V. (2015). Activating natural bentonite as a cost-effective adsorbent for removal of Congo-red in wastewater. Journal of Industrial and Engineering Chemistry, 21, 653–661.

Zheng, H., Liu, D., Zheng, Y., Liang, S., & Liu, Z. (2009). Sorption isotherm and kinetic modeling of aniline on Cr-bentonite. Journal of Hazardous Materials, 167, 141–147.


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