Baker’s yeast-MnO2 composites as biosorbent for Malachite green: An ecofriendly approach for dye removal from aqueous solution

Santos, Bruna Assis Paim dos; Cossolin, Aline Silva; Reis, Hélen Cristina Oliveira dos; Castro, Ketinny Camargo de; Silva, Evanleide Rodrigues da; Pereira, Gabriele de Menezes; Sousa Junior, Paulo Teixeira de; Dall'Oglio, Evandro Luiz; Vasconcelos, Leonardo Gomes de; Morais, Eduardo Beraldo de

doi:10.4136/ambi-agua.2254

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ARTICLES • Rev. Ambient. Água 14 (1) • 2019 • https://doi.org/10.4136/ambi-agua.2254 copy

Baker’s yeast-MnO2 composites as biosorbent for Malachite green: An ecofriendly approach for dye removal from aqueous solution

Compósitos de MnO2-levedura de pão como biossorvente de verde Malaquita: uma abordagem ambientalmente amigável para a remoção de corante de solução aquosa

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

In this study, baker’s yeast-MnO₂ composites, produced by direct oxidation of yeast with KMnO₄ under acidic conditions, were used as biosorbent to remove the triphenylmethane dye Malachite green (MG) from an aqueous solution. Parameters that influence the adsorption process, such as pH, contact time, temperature, initial dye concentration and biosorbent dosage, were evaluated in batch experiments. The optimum removal of MG was found to be 86.7 mg g^-1 at pH 10, 1.0 g L^-1 of biomass dosage and 45°C. The kinetic data of dye removal was better described by the pseudo-second-order model. The adsorption process followed the Langmuir isotherm model and the maximum biosorption capacity was estimated to be 243.9 mg g^-1 (at 25°C). The negative values of ∆G° and the positive value of ∆H° indicated that the MG biosorption onto yeast-MnO₂ composites is spontaneous and endothermic. Fourier transform infrared spectroscopy (FTIR) indicated that the nano-MnO₂ particles deposited on yeast-MnO₂ composites surface facilitated the MG adsorption. It was concluded that baker’s yeast-MnO₂ composites have potential for application as adsorbent for removal of MG from aqueous solution.

Keywords:
biosorption; isotherm and kinetic models; thermodynamic model.

Instituto de Pesquisas Ambientais em Bacias Hidrográficas Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi), Estrada Mun. Dr. José Luis Cembranelli, 5000, Taubaté, SP, Brasil, CEP 12081-010 - Taubaté - SP - Brazil
E-mail: ambi.agua@gmail.com

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[1] ^*Corresponding author: Eduardo Beraldo de Morais, e-mail: beraldo_morais@yahoo.com.br

Parameters	Temperature (°C)
	25	35	45
q_experimental (mg g^-1)	86.5	92.5	95.7
Pseudo-first order model
K₁ (min^-1)	4.79 x 10^-2	3.15 x 10^-2	6.79 x 10^-2
q₁ (mg g^-1)	62.66	41.02	30.39
R ²	0.964	0.981	0.969
Pseudo-second order model
K₂ (g mg^-1 min^-1)	1.32 x 10^-3	1.34 x 10^-3	4.75 x 10^-3
q₂ (mg g^-1)	92.61	98.04	98.04
R ²	0.999	0.999	0.999
Intraparticle diffusion model
Step 1
K_id (mg g^-1 min^-0.5)	5.517	7.858	5.589
C (mg g^-1)	39.94	34.44	59.94
R ²	0.973	0.986	0.941
Step 2
K_id (mg g^-1 min^-0.5)	1.702	2.256	0.15
C (mg g^-1)	68.53	68.33	94.13
R ²	0.928	0.99	0.96

Langmuir		Freundlich		D–R
q_max (mg g^-1)	243.90	K_F (mg g^-1) (mg L^-1)^-1/n	38.18	q_m (mol g^-1)	2.07 x 10^-3
K_L (L mg^-1)	4.02 x 10^-2	n	2.819	β (mol² J^-2)	3.00 x 10^-9
R ²	0.979	R ²	0.865	E (kJ mol^-1)	12.91
				R ²	0.890

Adsorbent	T (°C)	pH	q_max (mg g^-1)	Reference
Brown-rotted pine wood	30	4.0	29.85	Zhang et al. (2011)ZHANG, H.; TANG, Y.; LIU, X.; KE, Z.; SU, X.; CAI, D. et al. Improved adsorptive capacity of pine wood decayed by fungi Poria cocos for removal of Malachite green from aqueous solutions. Desalination, v. 274, n. 1-3, p. 97-104, 2011. https://doi.org/10.1016/j.desal.2011.01.077 https://doi.org/10.1016/j.desal.2011.01....
Leaf of pineapple (Ananas comosus)	25	9.0	54.64	Chowdhury et al. (2011)CHOWDHURY, S.; CHAKRABORTY, S.; SAHA, P. Biosorption of Basic Green 4 from aqueous solution by Ananas comosus (pineapple) leaf powder. Colloids and Surfaces B: Biointerfaces, v. 84, n. 2, p. 520-527, 2011. http://dx.doi.org/10.1016/j.colsurfb.2011.02.009 http://dx.doi.org/10.1016/j.colsurfb.201...
Potato peel	25	4.0	32.39	Guechi and Hamdaoui (2016)GUECHI, E. K.; HAMDAOUI, O. Sorption of malachite green from aqueous solution by potato peel: Kinetics and equilibrium modeling using non-linear analysis method. Arabian Journal of Chemistry, v. 9, p. S416-S424, 2016. https://doi.org/10.1016/j.arabjc.2011.05.011 https://doi.org/10.1016/j.arabjc.2011.05...
Sea shell powder	30	8.0	42.33	Chowdhury and Saha (2010)CHOWDHURY, S.; SAHA, P. Sea shell powder as a new adsorbent to remove Basic Green 4 (Malachite Green) from aqueous solutions: Equilibrium, kinetic and thermodynamic studies. Chemical Engineering Journal, v. 164, n. 1, p. 168-177, 2010. http://dx.doi.org/10.1016/j.cej.2010.08.050 http://dx.doi.org/10.1016/j.cej.2010.08....
Rice straw modified with citric acid	20	6.0	256.41	Gong et al. (2006)GONG, R.; JIN, Y.; CHEN, F.; CHEN, J.; LIU, Z. Enhanced malachite green removal from aqueous solution by citric acid modified rice straw. Journal of Hazardous Materials, v. 137, n. 2, p. 865-870, 2006. https://doi.org/10.1016/j.jhazmat.2006.03.010 https://doi.org/10.1016/j.jhazmat.2006.0...
Degreased coffee bean	25	4.0	55.30	Baek et al. (2010)BAEK, M. H.; IJAGBEMI, C. O.; O, S. J.; KIM, D. S. Removal of Malachite Green from aqueous solution using degreased coffee bean. Journal of Hazardous Materials, v. 176, n. 1-3, p. 820-828, 2010. https://doi.org/10.1016/j.jhazmat.2009.11.110 https://doi.org/10.1016/j.jhazmat.2009.1...
Baker's yeast-MnO₂composites	25	10	243.90	Present study

T (°C)	KD	∆G° (kJ mol^-1)	∆H° (kJ mol^-1)	∆S° (J mol^-1 K^-1)
25	6.39	-4.70	42.10	157.0
35	12.76	-6.27
45	18.53	-7.84