Chitosan and gum arabic nanoparticles for heavy metal adsorption

Abreu, Flavia Oliveira Monteiro da Silva; Silva, Nilvan Alves da; Sipauba, Mateus de Sousa; Pires, Tamara Fernandes Marques; Bomfim, Tatiana Araújo; Monteiro Junior, Oyrton Azevedo de Castro; Forte, Maria Madalena de Camargo

doi:10.1590/0104-1428.02317

Flavia Oliveira Monteiro da Silva Abreu ^* * flavia.monteiro@uece.br

Laboratório de Química Analítica e Ambiental – LAQAM, Centro de Ciências Tecnólogicas – CCT, Universidade Estadual do Ceará – UECE, Fortaleza, CE, Brasil

Nilvan Alves da Silva

Laboratório de Química Analítica e Ambiental – LAQAM, Centro de Ciências Tecnólogicas – CCT, Universidade Estadual do Ceará – UECE, Fortaleza, CE, Brasil

Mateus de Sousa Sipauba

Laboratório de Química Analítica e Ambiental – LAQAM, Centro de Ciências Tecnólogicas – CCT, Universidade Estadual do Ceará – UECE, Fortaleza, CE, Brasil

Tamara Fernandes Marques Pires

Laboratório de Química Tecnológica, Centro de Ciências Tecnológicas – CCT, Universidade de Fortaleza – UNIFOR, Fortaleza, CE, Brasil

Tatiana Araújo Bomfim

Laboratório de Química Tecnológica, Centro de Ciências Tecnológicas – CCT, Universidade de Fortaleza – UNIFOR, Fortaleza, CE, Brasil

Oyrton Azevedo de Castro Monteiro Junior

Laboratório de Química Tecnológica, Centro de Ciências Tecnológicas – CCT, Universidade de Fortaleza – UNIFOR, Fortaleza, CE, Brasil

Maria Madalena de Camargo Forte

Laboratório de Materiais Poliméricos – LaPol, Departamento de Engenharia dos Materiais - DeMat, Escola de Engenharia – EE, Universidade Federal do Rio Grande do Sul – UFRGS, Porto Alegre, RS, Brasil

* flavia.monteiro@uece.br

NP Code	CT/GA mass ratio	CT content (%wt)	GA solution (%wt)	Yield (%)	Zeta Potential (mV)	Particle size (nm)
CTGA80	4/1	80	0.1	13.9	-30.8	650
CTGA56	1.3/1	56	0.3	25.8	-24.9	221
CTGA48	1/1.1	48	0.1	24.8	-23.7	340
CTGA25	1/3	25	0.3	13.5	-31.6	28 (70%) 350 (30%)

Kinetics	Parameters	CTGA56			CTGA80
Kinetics	Parameters	Concentration (mg/L)
		250	1250	2500	250	1250	2500
1ª Order	q_e1	78.47	48.89	253.75	61.86	36.39	31.17
	k₁	0.002	0.017	0.039	0.016	0.018	0.013
	R²	0.418	0.725	0.780	0.558	0.948	0.390

2ª Order	q_e2	0.088	909.1	2500	0.008	909.09	2000
	k₂	4.01	-0.0015	0.0003	-4057.9	-0.0024	-0.0025
	R²	0.736	0.999	0.9999	0.94	1	0.9999

Difusion	C	87.90	985.34	2048.1	117.93	987.24	2160.00
	Kd	-3.77	-2.99	18.35	0.625	-3.529	-1.142
	R²	0.173	0.578	0.939	0.006	0.863	0.076

Isotherms	Parameters	CTGA56	CTGA80
Langmuir	K_L	0.01275	0.00907
	q_máx	303.03	344.83
	R_L	0.24	0.31
	R²	0.9947	0.9999
Freundlich	K_F	2.2x10^-09	1.9x10^-07
	n	0.208	0.253
	R²	0.9200	0.9610

Adsorbent Materials	q_máx (mg/g) -	Ref.
Chitosan modified by chelating agents	113.6-55.6	^[ ²⁴24 Kołodyńska, D. (2012). Adsorption characteristics of chitosan modified by chelating agents of a new generation. Chemical Engineering Journal, 179, 33-43. http://dx.doi.org/10.1016/j.cej.2011.10.028. http://dx.doi.org/10.1016/j.cej.2011.10.... ^]
Chitosan chemically modified with the complexation agent	109.9	^[ ²⁵25 Justi, K. C., Fávere, V. T., Laranjeira, M. C., Neves, A., & Peralta, R. A. (2005). Kinetics and equilibrium adsorption of Cu(II), Cd(II), and Ni(II) ions by chitosan functionalized with 2[-bis-(pyridylmethyl)aminomethyl]-4-methyl-6-formylphenol. Journal of Colloid and Interface Science, 291(2), 369-374. http://dx.doi.org/10.1016/j.jcis.2005.05.017. PMid:15992808. http://dx.doi.org/10.1016/j.jcis.2005.05... ^]
Thiourea-modified magnetic chitosan microspheres	66.7	^[ ²⁸28 Zhou, L., Wang, Y., Liu, Z., & Huang, Q. (2009). Characteristics of equilibrium, kinetics studies for adsorption of Hg(II), Cu(II), and Ni(II) ions by thiourea-modified magnetic chitosan microspheres. Journal of Hazardous Materials, 161(2-3), 995-1002. http://dx.doi.org/10.1016/j.jhazmat.2008.04.078. PMid:18538924. http://dx.doi.org/10.1016/j.jhazmat.2008... ^]
Semi-IPN hydrogel based on chitosan and gelatin	277.04-300.3	^[ ²⁹29 Wang, W. B., Huang, D. J., Kang, Y. R., & Wang, A. Q. (2013). One-step in situ fabrication of a granular semi-IPN hydrogel based on chitosan and gelatin for fast and efficient adsorption of Cu2+ ion. Colloids and Surfaces. B, Biointerfaces, 106, 51-59. http://dx.doi.org/10.1016/j.colsurfb.2013.01.030. PMid:23434691. http://dx.doi.org/10.1016/j.colsurfb.201... ^]
Chitosan with epichlorohydrin	35.5	^[ ³⁴34 Chen, A. H., Liu, S. C., Chen, C. Y., & Chen, C. Y. (2008). Comparative adsorption of Cu(II), Zn (II), and Pb(II) ions in aqueous solution on the crosslinked chitosan with epichlorohydrin. Journal of Hazardous Materials, 154(1-3), 184-191. http://dx.doi.org/10.1016/j.jhazmat.2007.10.009. PMid:18031930. http://dx.doi.org/10.1016/j.jhazmat.2007... ^]
Chitosan-clay nanocomposites	181.5	^[ ³⁵35 Azzam, E. M., Eshaq, G., Rabie, A. M., Bakr, A. A., Abd-Elaal, A. A., El Metwally, A. E., & Tawfik, S. M. (2016). Preparation and characterization of chitosan-clay nanocomposites for the removal of Cu(II) from aqueous solution. International Journal of Biological Macromolecules, 89, 507-517. http://dx.doi.org/10.1016/j.ijbiomac.2016.05.004. PMid:27151669. http://dx.doi.org/10.1016/j.ijbiomac.201... ^]
Chitosan–zeolite composites	14.8-51.3	^[ ³⁶36 Wan Ngah, W. S., Teong, L. C., Toh, R. H., & Hanafiah, M. A. K. M. (2013). Comparative study on adsorption and desorption of Cu(II) ions by three types of chitosan-zeolite composites. Chemical Engineering Journal, 223, 231-238. http://dx.doi.org/10.1016/j.cej.2013.02.090. http://dx.doi.org/10.1016/j.cej.2013.02.... ^]
Xanthate-modified magnetic chitosan	34.5	^[ ³⁷37 Zhu, Y., Hu, J., & Wang, J. (2012). Competitive adsorption of Pb(II), Cu(II) and Zn(II) onto xanthate-modified magnetic chitosan. Journal of Hazardous Materials, 221-222, 155-161. http://dx.doi.org/10.1016/j.jhazmat.2012.04.026. PMid:22564487. http://dx.doi.org/10.1016/j.jhazmat.2012... ^]
Chitosan loaded with Reactive Orange 16	107.3	^[ ³⁸38 Vasconcelos, H. L., Guibal, E., Laus, R., Vitali, L., & Fávere, V. T. (2009). Competitive adsorption of Cu(II) and Cd(II) ions on spray-dried chitosan loaded with Reactive Orange 16. Materials Science and Engineering C, 29(2), 613-618. http://dx.doi.org/10.1016/j.msec.2008.10.022. http://dx.doi.org/10.1016/j.msec.2008.10... ^]
Recycled chitosan nanofibril	227.3	^[ ³⁹39 Liu, D., Li, Z., Zhu, Y., Li, Z., & Kumar, R. (2014). Recycled chitosan nanofibril as an effective Cu(II), Pb (II) and Cd(II) ionic chelating agent: adsorption and desorption performance. Carbohydrate Polymers, 111, 469-476. http://dx.doi.org/10.1016/j.carbpol.2014.04.018. PMid:25037377. http://dx.doi.org/10.1016/j.carbpol.2014... ^]
CTGA56	303	This work
CTGA80	344.8	This work

[1] * flavia.monteiro@uece.br

Brasil

Brasil

Chitosan and gum arabic nanoparticles for heavy metal adsorption

Abstract