Effect of Temperature and Time on Crosslinking Reaction of Fabricating Modified Poly(Vinyl Alcohol) Materials for Pb(II) Removal in Aqueous Solutions
Main Article Content
Abstract
The study aims to evaluate the cross-linking ability of Poly(Vinyl Alcohol) (PVA) membranes with L-glutamic acid through solid-phase esterification reactions to improve water resistance. The cross-linked material exhibits enhanced Pb(II) ion adsorption capacity due to porosity introduced by Poly(Ethylene Glycol) (PEG), which increases surface area and swelling ability. The cross-linking reaction and porosity of the material were demonstrated by the crosslink density of the membrane and the material’s swelling behavior in water. Results show that at 130 °C for 60 minutes, the optimal material was obtained, with a crosslink density of 92.89%. After the addition of PEG, water swelling increased to 131.77%, a 51% increase compared to the system containing only PVA and L-glutamic acid. The PVA-c-glu/PEG membrane exhibited excellent Pb(II) adsorption capacity, with a Qe of 66.29 mg/g at room temperature (30 °C), an initial Pb(II) concentration of 114.08 mg/L, pH 7, and a material mass of 0.05 g in 2 days, compared to untreated PVA, which had a Qe of 11.79 mg/g.
Keywords
Modified PVA, L-glutamic acid, Poly(Ethylene Glycol), cross-linked, heavy metal adsorption, Pb(II)
Article Details
References
[2] Roy S., Gupta S. K., Prakash J., Habib G, and Kumar P. A., global perspective of the current state of heavy metal contamination in road dust, Environmental Science and Pollution Research, vol. 29, pp. 33230-33251, Jan. 2022. https://doi.org/10.1007/s11356-022-18583-7
[3] Rashid A., Schutte B. J., Ulery A., Deyholos M. K., Sanogo S., Lehnhoff E. A, and Beck L., Heavy metal contamination in agricultural soil: environmental pollutants affecting crop health, Agronomy, vol. 13, iss. 6, May 2023. https://doi.org/10.3390/agronomy 13061521
[4] Sharifi S. A., Zaeimdar M., Jozi S. A, and Hejazi R., Effects of soil, water and air pollution with heavy metal ions around lead and mining and processing factories, Water, Air, & Soil Pollution, vol. 234, 2023. https://doi.org/10.1007/s11270-023-06758-y
[5] Jiwan S, and Kalamdhad A. S., Effects of heavy metals on soil, plants, human health and aquatic life, International Journal of Research in Chemistry and Environment, vol. 1, pp. 15-21, Oct. 2011.
[6] Collin S., Baskar A., Geevarghese D. M., Ali M. N. V. S., Bahubali P., Choudhary R., Lvov V., Tovar G. L., Senatov F., Koppala S, and Swamiappan S., Bioaccumulation of lead (Pb) and its effects in plants: a review, Journal of Hazardous Matererials Letters, Nov. 2022. https://doi.org/10.1016/j.hazl.2022.100064
[7] Baibotayeva A. D., Zhantasov K. T., Kenzhaliyeva G. D., Bosak V. N, and Mamitova A. D., Influence of heavy metals on the environment and methods of soil bioremediation control, International Journadl of Engineering Research and Technolgy, vol. 13, no. 6, pp. 1120-1125, 2020. https://doi.org/10.37624/IJERT/13.6.2020.1120-1125
[8] Aguayo-Villarreal I. A., Bonilla-Petriciolet A, and Muñiz-Valencia, Preparation of activated carbons from pecan nutshell and their application in the antagonistic adsorption of heavy metal ions, Journal of Molecular Liquids, vol. 230, pp. 686-695, Mar. 2017. https://doi.org/10.1016/j.molliq.2017.01.039
[9] Tang J., Xi J., Yu J., Chi R, and Chen J., Novel combined method of biosorption and chemical precipitation for recovery of Pb2+ from wastewater, Environmental Science and Pollution Research, vol. 25, pp. 28705-28712, Aug. 2018. https://doi.org/10.1007/s11356-018-2901-6
[10] Yang X., Liu L., Tan W., Liu C., Dang Z, and Qiu G., Remediation of heavy metal contaminated soils by organic acid extraction and electrochemical adsorption, Environmental Pollution, vol. 264, pp. 1-9, Sep. 2020. https://doi.org/10.1016/j.envpol.2020.114745
[11] Deng S., Liu X., Liao J., Lin H, and Liu F., PEI modified multiwalled carbon nanotube as a novel additive in PAN nanofiber membrane for enhanced removal of heavy metal ions, Chemical Engineering Journal, vol. 375, Nov. 2019. https://doi.org/10.1016/j.cej.2019.122086
[12] Wang B., Lan J., Bo C., Gong B, and Ou J., Adsorption of heavy metal onto biomass-derived activated carbon: review, RSC Advances, vol. 13, iss.7, pp. 4275-4302, Jan. 2023. https://doi.org/10.1039/D2RA07911A
[13] Aslam M., Kalyar M. A, and Raza Z. A., Polyvinyl alcohol: a review of research status and use of polyvinyl alcohol based nanocomposites, Polymer Engineering and Science, vol. 58, iss.12, pp. 2119-2132, Dec. 2018. https://doi.org/10.1002/pen.24855
[14] Vu Trung N., Pham Thi N., Nguyen T. H., Nguyen M. N., Tran Anh D., Nguyen Trung T., Tran Quang T., Than Van H, and Tran Thi T., Tuning the thermal and mechanical properties of poly(vinyl alcohol) with 2,5-furandicarboxylic acid acting as a biobased crosslinking agent, Polymer Journal, vol. 54, pp. 335-343, 2022. https://doi.org/10.1038/s41428-021-00583-y
[15] Pham Thi N., Ho L. H. T., Vu Trung N., Tran H. A., Nguyen Ngoc M., Nguyen Thu H., Le Quang D., and Tran Thi T., Investigation of the effects of cellulose nanofiber on the properties of poly(vinyl alcohol) crosslinked by 2,5-furandicarboxylic acid, Journal of Elastomers & Plastics, vol. 56, pp. 194-210, Jan. 2024. https://doi.org/10.1177/00952443231226420
[16] Falqi F. H., Bin-Dahman O. A., Hussain M, and Al-Harthi, Preparation of miscible PVA/PEG blends and effect of graphene concentration on thermal, crystallization, morphological, and mechanical properties of PVA/PEG (10 wt%) blend, International Journal of Polymer Science, vol. 2018, pp. 1-10, Sep. 2018. https://doi.org/10.1155/2018/8527693
[17] Zhu Z., Bian Y., Zhang X., Zeng R, and Yang B., Terahertz spectroscopy of temperature-induced transformation between glutamic acid, pyroglutamic acid and racemic pyroglutamic acid, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscpopy, vol. 275, pp. 121-150, Jul. 2022. https://doi.org/10.1016/j.saa.2022.121150
[18] H. Li, W. Zhang, W. Xu, and X. Zhang, Hydrogen bonding governs the elastic properties of poly (vinyl alcohol) in water: single-molecule force spectroscopic studies of PVA by AFM, Macromolecules, vol. 33, no. 2, pp. 465-469, 2000. https://doi.org/10.1021/ma990878e
[19] H. S. Mansur, R. L. Oréfice, and A. A. Mansur, Characterization of poly (vinyl alcohol)/poly (ethylene glycol) hydrogels and PVA-derived hybrids by small-angle X-ray scattering and FTIR spectroscopy, Polymer, vol. 45, no. 21, pp. 7193-7202, 2004. https://doi.org/10.1016/j.polymer.2004.08.036
[20] J. A. Venegas-Sánchez, M. Tagaya, and T. Kobayashi, Ultrasound stimulus inducing change in hydrogen bonded crosslinking of aqueous polyvinyl alcohols, Ultrasonics sonochemistry, vol. 21, no. 1, pp. 295-309, 2014. https://doi.org/10.1016/j.ultsonch.2013.06.011