Adsorption of textile dye and textile effluent using organoclay from Northeast of Brazil

Cavalcanti, J. V. F. L.; Fonseca, C. C. da; Silva, G. M. da; Santiago, I. T.; Tenório, L. L.; Motta Sobrinho, M. A. da; Baraúna, O. S.

doi:10.1590/0366-69132021673833094

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Articles • Cerâmica 67 (383) • Jul-Sep 2021 • https://doi.org/10.1590/0366-69132021673833094 copy

Adsorption of textile dye and textile effluent using organoclay from Northeast of Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The main goal of this research was to study the adsorptive capacity of an organophilic clay for the removal of textile dye Nylosan blue B113 and its further application in real textile effluent (RTE) treatment. The used clay known as Bofe was originated in the township of Boa Vista, State of Paraíba, Northeast of Brazil. Initially, the material was dried and powdered. Subsequently, the organophilic clay was synthesized by insertion of hexadecyltrimethylammonium bromide. Furthermore, the clay was characterized using the following analyses: cation exchange capacity (CEC), X-ray diffractometry (XRD), surface area analysis, and pH of point of zero charge (pH_pzc). Then, batch adsorption systems were performed along with equilibrium/kinetic/thermodynamic studies. At last, keeping the same weight/volume ratio, a solution of real textile effluent was treated. Results showed CEC of 54.40 mmol/100g, lamellar expansion from 1.69 to 2.01 nm, maximum adsorptive capacity of 50 mg.g^-1, and chemical oxygen demand (COD) removal of 74% (RTE).

Keywords:
adsorption; montmorillonite clay; organoclay; textile dye; textile effluent

Organoclay type	Textile dye	Maximum adsorption capacity (mg.g^-1)	Ref.
Organo-palygorskite-Fe₃O₄ nanomaterial	Indigo carmine	120	⁴4 A. Middea, L.S. Spinelli, F.G. Souza Jr, R. Neumann, T.L.A.P. Fernandes, O.F.M. Gomes, Appl. Clay Sci. 139 (2017) 45.
Organo-palygorskite-Fe₃O₄ nanomaterial	Methyl orange	70
Montmorillonite treated with gemini surfactants	Methyl orange	250	⁶6 Z. Luo, M. Gao, Y. Ye, S. Yang, Appl. Surf. Sci. 324 (2015) 807.
Montmorillonite treated with HDTMA salt	Remazol blue RN	211	¹⁰10 D.F. Brito, E.C. Silva Filho, M.G. Fonseca, M. Jaber, J. Environ. Chem. Eng. 6 (2018) 7080.
Bentonite treated with HDTMA-Cl salt	Methylene blue	127	²¹21 T.S. Anirudhan, M. Ramachandran, Process Saf. Environ. Prot. 95 (2015) 215.
	Crystal violet	148
	Rhodamine B	155
Smectite-rich clayey rock sulfuric-acid-activated	Indanthrene blue RS	18	²²22 I. Chaari, M. Feki, M. Medhioub, J. Bouzid, E. Fakhfakh, F. Jamoussi, J. Hazard. Mater. 172 (2009) 1623.
Montmorillonite treated with tetra-n-butylammonium bromide	Toluidine blue	33	²³23 R.P. Chicinas, H. Bedelean, R. Stefan, A. Măicăneanu, J. Mol. Struct. 1154 (2018) 187.
Montmorillonite treated with tetra-n-butylammonium bromide	Malachite green	39
Montmorillonite treated with HDTMA-Br salt	Nylosan blue B113	50	This research

Ca²⁺	Mg²⁺	Na⁺	K⁺	Al³⁺	H₃O⁺	pH	CEC
10.30	34.80	6.60	0.30	<0.01	2.39	5.60	54.40

Parameter	Natural clay		Organoclay A
Parameter	Langmuir isotherm	Langmuir-Freundlich isotherm	Langmuir isotherm	Langmuir-Freundlich isotherm
q^max (mg.g^-1)	9.4 ± 0.8	11.2 ± 2.1	46.3 ± 2.3	49.5 ± 3.8
K	0.020 ± 0.006	(3.4 ± 1.3) x 10^-4	0.49 ± 0.15	0.60 ± 0.15
1/n	-	0.55 ± 0.14	-	1.49 ± 0.29
R²	0.858	0.958	0.943	0.964
rss	6.655	1.618	89.237	47.724

Parameter	Natural clay	Natural clay	Organoclay A	Organoclay A
Parameter	PFO	PSO	PFO	PSO
q_eq (mg.g^-1)	7.7 ± 0.3	8.3 ± 0.4	37.2 ± 2.5	38.7 ± 2.2
k₁ (min^-1)	0.119 ± 0.023	-	0.146 ± 0.045	-
k₂ (g.mg^-1.min^-1)	-	0.019 ± 0.007	-	0.008 ± 0.003
R²	0.956	0.947	0.841	0.906
rss	3.381	4.005	203.626	119.180

Parameter	28 ºC	40 ºC
q^max (mg.g^-1)	49.5±3.8	55.4±4.7
K	0.60 ± 0.15	1.05 ± 0.19
1/n	1.49 ± 0.29	1.04 ± 0.23
R²	0.964	0.976
rss	47.724	34.138
∆Hº (kJ.mol^-1)	36.200
∆Sº (J.mol^-1.K^-1)	116.070
∆Gº (kJ.mol^-1)	-0.130

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