Rapid Development of Molecularly imprinted Polymers for Efficient Removal of Cadmium Ions from Water

Zuhra Memon

doi:10.52428/27888991.v7i11.1474

Autores/as

Zuhra Memon University of Sindh

DOI:

https://doi.org/10.52428/27888991.v7i11.1474

Palabras clave:

Polimero, Remover

Resumen

Los polímeros con impresión molecular (MIPs, por sus siglas en inglés) son redes poliméricas entrecruzadas especializadas diseñadas para mostrar una fuerte afinidad hacia moléculas, iones o especies metálicas específicas, y también pueden exhibir una selectividad notable frente a compuestos estructuralmente relacionados. En este trabajo se describe la creación de un polímero impreso con iones de cadmio (II) destinado a la extracción selectiva de iones de cadmio de matrices acuosas. Se utilizó 4-vinilpiridina como monómero funcional en el proceso de polimerización en bloque empleado para la síntesis del polímero. Para lograr una caracterización completa se realizaron análisis termogravimétricos (TGA), microscopía electrónica de barrido (SEM) y análisis elemental CHNS. Se llevaron a cabo estudios de equilibrio para verificar las propiedades de adsorción, determinándose que el mecanismo de adsorción es exotérmico y sigue cinética pseudo-primer orden, de acuerdo con los análisis cinéticos y termodinámicos. Cuando se probó en mezclas binarias de iones, el polímero sintetizado mostró una selectividad excepcional hacia los iones Cd(II). Además, durante múltiples ciclos de adsorción-desorción, el material demostró una capacidad de regeneración sobresaliente.

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Citas

Ansari, S., & Karimi, M. (2017). Recent configurations and progressive uses of magnetic molecularly imprinted polymers for drug analysis. Talanta, 167, 470–485. https://doi.org/10.1016/j.talanta.2017.02.049

Cormack, P. A., & Elorza, A. Z. (2004). Molecularly imprinted polymers: Synthesis and characterisation. Journal of Chromatography B, 804, 173–182. https//DOI:10.1016/j.jchromb.2004.02.013

Cui, Y., Ding, L., & Ding, J. (2022). Recent advances of magnetic molecularly imprinted materials: From materials design to complex sample pretreatment. TrAC Trends in Analytical Chemistry, 147, 116514. https://doi.org/10.1016/j.trac.2021.116514

Fan, H. T., et al. (2012). An ion-imprinted amino-functionalized silica gel sorbent prepared by hydrothermal assisted surface imprinting technique for selective removal of cadmium (II) from aqueous solution. Applied Surface Science, 258, 3815–3822. https://doi.org/10.1016/j.jhazmat.2009.12.032

Guo, B., et al. (2014). Magnetic ion-imprinted and –SH functionalized polymer for selective removal of Pb(II) from aqueous samples. Applied Surface Science, 292, 438–446. https://doi.org/10.1016/j.apsusc.2013.11.156

Kumar, P., & Kumar, P. (2019). Removal of cadmium (Cd II) from aqueous solution using gas industry-based adsorbent. SN Applied Sciences, 1(4), 1–8. https://doi.org/10.1007/s42452-019-0377-8

Liu, Y., Wang, L., Li, H., Zhao, L., Ma, Y., Zhang, Y., Liu, J., & Wei, Y. (2024). Rigorous recognition mode analysis of molecularly imprinted polymers: Rational design, challenges, and opportunities. Progress in Polymer Science, 150, 101790. https//DOI:10.1016/j.progpolymsci.2024.101790

Luo, X., et al. (2011). Novel Cu(II) magnetic ion-imprinted materials prepared by surface imprinted technique combined with a sol–gel process. Journal of Hazardous Materials, 192, 949–955. https//DOI: 10.1016/j.jhazmat.2011.05.042

Malbenia, M. J., et al. (2024). An overview on the key advantages and limitations of batch and dynamic modes of biosorption of metal ion. Chemosphere, 157, 142051 https://doi.org/10.1016/j.chemosphere.2024.142051

Memon, G. Z., et al. (2008). Adsorption of methyl parathion pesticide from water using watermelon peels as a low-cost adsorbent. Chemical Engineering Journal, 138, 616–621. DOI:10.1016/j.cej.2007.09.027

Memon, G. Z., Bhanger, M. I., & Akhtar, M. (2007). The removal efficiency of chestnut shells for selected pesticides from aqueous solutions. Journal of Colloid and Interface Science, 315, 33–40. https//DOI: 10.1016/j.jcis.2007.06.037

Memon, G. Z., et al. (2009). Adsorption of methyl parathion from aqueous solutions using mango kernels: Equilibrium, kinetic and thermodynamic studies. Bioremediation Journal, 13, 102–106. https//DOI:10.1080/1088986090290208

Ndunda, E. N. (2020). Molecularly imprinted polymers: A closer look at the control polymer used in determining the imprinting effect—A mini review. Journal of Molecular Recognition, 33, e2855. https://doi.org/10.1002/jmr.2855

Nishide, H., Deguchi, J., & Tsuchida, E. (1976). Selective adsorption of metal ions on crosslinked poly(vinylpyridine) resin prepared with a metal ion as a template. Chemical Letters, 5, 169–174. https://doi.org/10.1246/cl.1976.169

Priyadarshanee, M., & Das, S. (2021). Biosorption and removal of toxic heavy metals by metal-tolerating bacteria for bioremediation of metal contamination: A comprehensive review. Journal of Environmental Chemical Engineering, 9(1), 104686.

https://doi.org/10.1016/j.jece.2020.104686

Qiu, H., et al. (2009). Critical review in adsorption kinetic models. Journal of Zhejiang University Science A, 10, 716–724. https://doi.org/10.1631/jzus.A0820524

Wang, F. Y., Wang, H., & Ma, J. W. (2010). Adsorption of cadmium (II) ions from aqueous solution by a new low-cost adsorbent—Bamboo charcoal. Journal of Hazardous Materials, 177(1–3), 300–306. https://doi.org/10.1016/j.jhazmat.2009.12.032

Zhang, L., et al. (2012). Improvement of Ag(I) adsorption onto chitosan/triethanolamine composite sorbent by an ion-imprinted technology. Applied Surface Science, 263, 696–703. https://doi.org/10.1016/j.apsusc.2012.09.143