The adsorption of Direct Brown 1 dye using kaolinite and surfactant modified kaolinite


Author : Mark Jeeva, Sivarama Krishna Lakkaboyana, Wan Zuhairi W.Y.Publication : Bulletin of the Geological Society of MalaysiaNo. : 67Page : 35-45Year : 2019DOI : DOI : https://doi.org/10.7186/bgsm67201905


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Bulletin of the Geological Society of Malaysia, Volume 67, June 2019, pp. 35 – 45

The adsorption of Direct Brown 1 dye using kaolinite and surfactant modified kaolinite

Mark Jeeva1,*, Sivarama Krishna Lakkaboyana2,3, Wan Zuhairi W.Y.1

1Geology Programme, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
2Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
3Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam
*Corresponding author email address: mgva85@gmail.com

Abstract: This paper elucidates the removal of Direct Brown 1 (DB 1 1) dye from wastewater by using the natural
kaolinite (NK) compared to Hexadecyltrimethylammonium bromide (HDTMA) modified kaolinite (HMK) as adsorbent
materials at bench scale. The materials were characterized by X-Ray Diffraction (XRD) and FT-IR spectroscopy. The
surface areas were determined using Sears’ method. The test effects efficiency of natural and surfactant modified kaolinite
in adsorption of DB 1 1 dye has been applied as a function of initial concentrations, pH, contact times and temperatures
using the batch technique. Removal of dye from aqueous solution by HMK for the test effects showed a general increase
of two to five times amount of DB 1 1 adsorbed compared to NK. The DB 1 1 adsorption was influenced by temperature
with an increase of sorption (15 mg/g) for HMK compared to NK. The adsorption increased with temperature suggesting
that the adsorption process was endothermic. The adsorption percentages of DB 1 for pH and contact time test effects
showed 93 % and 82.7 % respectively for HMK compared to 6 % for NK. Adsorption percentages of DB 1 on equilibrium
concentration effect resulted with 57.5 % for HMK compared to 6 % for NK. Intraparticle diffusion and mass driving
force were found to be the reasons of increase rate of DB 1 adsorption onto HMK and NK. The temperature increase
influenced the total energy of the adsorbate molecules to obtain a higher rate of adsorption. Pseudo-second-order of
kinetics identifies rate limiting step as the chemical adsorption involving valent forces through sharing or interparticular
diffusion between NK and HMK on DB 1. The adsorption patterns data correlated well with Langmuir (R2=0.93) and
Freundlich (R2=0.90) isotherm models. From the comparison showed by increase in adsorption percentages, HMK was
a better choice to be used as effective adsorbents for Direct Brown 1 (DB 1 1) dye compared to NK.

Keywords: Adsorption, Direct Brown 1 Dye, kaolinite, surfactant modified kaolinite

DOI : https://doi.org/10.7186/bgsm67201905