INVESTIGATION of the EFFECTS of PREPARED PVA/NANO LA2O3 MIXTURE on ALIZARIN DYE REMOVAL: KINETIC, ISOTHERM and THERMODYNAMIC STUDIES

Year 2022, Issue: 051, 179 - 191, 31.12.2022

Mehmet Semih Bingöl

Abstract

With the increasing industrialization, the use of dyestuffs increases. This increasing use causes serious dangers to the environment as waste. For this reason, studies on the removal of dyestuffs have increased. In this study, an adsorbent was prepared by adding nano-sized Lanthanum Oxide (La2O3) to Polyvinyl Alcohol for Alizarin Red S removal. The chemical structures of this adsorbent were confirmed by FT-IR analysis. The effects of adsorbent masses, pH, contact time on Alizarin Red S removal were investigated in adsorption studies. Accordingly, the highest 94.5% removal was achieved in 1 gram adsorbent mass, pH 7, 60 minutes. In addition, thermodynamic, isotherm and kinetic studies were carried out in the study. In isotherm studies, it was determined that the most suitable model was Freundlich and the qmax value was found to be 5.06 mg/g. However, the pseudo second order kinetic model was found to be suitable.

Keywords

Polyvinyl Alcohol, Lantanium Oxide, Alizarin, adsorption

Thanks

I would like to thanks Eastern Anatolia High Technology Application and Research Center (DAYTAM) that provided for infrastructure support.

References

• [1] Al Naim, A.F.;El-Shamy, A.G. (2021). A new reusable adsorbent of polyvinyl alcohol/magnesium peroxide (PVA/MgO2) for highly selective adsorption and dye removal, Mater. Chem. Phys., 270, 124820.
• [2] Roosta, M.;Ghaedi, M.;Mohammadi, M. (2014). Removal of Alizarin Red S by gold nanoparticles loaded on activated carbon combined with ultrasound device: Optimization by experimental design methodology, Powder Technol., 267, 134–144.
• [3] Zhang, H.;Chen, H.;Azat, S.;Mansurov, Z.A.;Liu, X.;Wang, J.;Su, X.;Wu, R. (2018). Super adsorption capability of rhombic dodecahedral Ca-Al layered double oxides for Congo red removal, J. Alloys Compd., 768, 572–581.
• [4] Bingöl, M.S. (2022). Effects of Prepared Gadolinium Oxide-Doped Chitosan/PVA Hydrogels on Congo Red Removal in Water, Water, Air, Soil Pollut., 233, 410.
• [5] Langmuir, I. (1918). THE ADSORPTION OF GASES ON PLANE SURFACES OF GLASS, MICA AND PLATINUM., J. Am. Chem. Soc., 40, 1361–1403.
• [6] Freundlich, H.M.F. (1906). Over the adsorption in solution, J. Phys. Chem, 57, 1100–1107.
• [7] Lagergren, S.K. (1898). About the theory of so-called adsorption of soluble substances, Sven. Vetenskapsakad. Handingarl, 24, 1–39.
• [8] Singh, A.;Palakollu, V.;Pandey, A.;Kanvah, S. (2016). Green Synthesis of 1, 4-Benzodiazipines over La2O3 and La(OH)3 Catalysts: Possibility of Langmuir-Hinshelwood adsorption, RSC Adv., 6(105), 103455-103462.
• [9] Cheraghali, R.;Aghazadeh, M. (2016). A simple and facile electrochemical route to synthesis of metal hydroxides and oxides ultrafine nanoparticles (M=La, Gd, Ni and Co), Anal. Bioanal. Electrochem., 8, 64–77.
• [10] Kharazmi, A.;Faraji, N.;Mat Hussin, R.;Saion, E.;Yunus, W.M.M.;Behzad, K. (2015). Structural, optical, opto-thermal and thermal properties of ZnS–PVA nanofluids synthesized through a radiolytic approach, Beilstein J. Nanotechnol., 6, 529–536.
• [11] Sulaiman, N.;Yulizar, Y.;Apriandanu, D.O.B. (2018). Eco-friendly method for synthesis of La2O3 nanoparticles using Physalis angulata leaf extract, AIP Conf. Proc., 2023, 20105.
• [12] Kavci, E. (2021). Malachite green adsorption onto modified pine cone: Isotherms, kinetics and thermodynamics mechanism, Chem. Eng. Commun., 208, 318–327.
• [13] Kavci, E.;Erkmen, J.;Bingöl, M.S. (2021). Removal of methylene blue dye from aqueous solution using citric acid modified apricot stone, Chem. Eng. Commun., 1–16.
• [14] Sabarish, R.;Unnikrishnan, G. (2018). Polyvinyl alcohol/carboxymethyl cellulose/ZSM-5 zeolite biocomposite membranes for dye adsorption applications, Carbohydr. Polym., 199, 129–140.
• [15] Mok, C.F.;Ching, Y.C.;Muhamad, F.;Abu Osman, N.A.;Hai, N.D.;Che Hassan, C.R. (2020). Adsorption of dyes using poly (vinyl alcohol)(PVA) and PVA-based polymer composite adsorbents: a review, J. Polym. Environ., 28, 775–793.