Alkaline-treated cocoa pod husk as adsorbent for removing methylene blue from aqueous solutions

Fei Ling Pua, Mohd Shaiful Sajab, Chin Hua Chia, Sarani Zakaria, Irman Abdul Rahman, Mohd Sapuan Salit

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

In this study, cocoa pod husk (CPH) was used as adsorbent for removing methylene blue (MB) from aqueous solutions. Before the adsorption studies, the CPH was treated using sodium hydroxide (NaOH) to increase its adsorption capacity toward methylene blue (MB). The NaOH-treated CPH was characterized by SEM and FTIR analyses. Lignin was removed after the NaOH treatment, leaving higher accessible surface for adsorption. The adsorption performances of the CPH were investigated in terms of adsorption kinetics and isotherms under different conditions, i.e., pH, initial MB concentration, and temperature. Freundlich isotherm fits the adsorption experiment data better than that of Langmuir and Sips isotherms, suggesting the heterogeneous adsorption behavior of MB on the CPH. The maximum adsorption capacity of the NaOH-treated CPH toward MB is 263.9 mg/g. Pseudo-second order gives the better correlation to predict the kinetic process. The adsorption of MB on the NaOH-treated CPH was found to be endothermic and spontaneous.

Original languageEnglish
Pages (from-to)460-465
Number of pages6
JournalJournal of Environmental Chemical Engineering
Volume1
Issue number3
DOIs
Publication statusPublished - 01 Sep 2013

Fingerprint

Cocoa
cocoa
Methylene Blue
Adsorbents
aqueous solution
adsorption
Adsorption
Isotherms
isotherm
kinetics
Sodium Hydroxide
Kinetics
Lignin
lignin
hydroxide
scanning electron microscopy
Sodium
sodium

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Pollution
  • Process Chemistry and Technology

Cite this

Pua, Fei Ling ; Sajab, Mohd Shaiful ; Chia, Chin Hua ; Zakaria, Sarani ; Rahman, Irman Abdul ; Salit, Mohd Sapuan. / Alkaline-treated cocoa pod husk as adsorbent for removing methylene blue from aqueous solutions. In: Journal of Environmental Chemical Engineering. 2013 ; Vol. 1, No. 3. pp. 460-465.
@article{219bb5bda7774984a7ed42c2d29219e6,
title = "Alkaline-treated cocoa pod husk as adsorbent for removing methylene blue from aqueous solutions",
abstract = "In this study, cocoa pod husk (CPH) was used as adsorbent for removing methylene blue (MB) from aqueous solutions. Before the adsorption studies, the CPH was treated using sodium hydroxide (NaOH) to increase its adsorption capacity toward methylene blue (MB). The NaOH-treated CPH was characterized by SEM and FTIR analyses. Lignin was removed after the NaOH treatment, leaving higher accessible surface for adsorption. The adsorption performances of the CPH were investigated in terms of adsorption kinetics and isotherms under different conditions, i.e., pH, initial MB concentration, and temperature. Freundlich isotherm fits the adsorption experiment data better than that of Langmuir and Sips isotherms, suggesting the heterogeneous adsorption behavior of MB on the CPH. The maximum adsorption capacity of the NaOH-treated CPH toward MB is 263.9 mg/g. Pseudo-second order gives the better correlation to predict the kinetic process. The adsorption of MB on the NaOH-treated CPH was found to be endothermic and spontaneous.",
author = "Pua, {Fei Ling} and Sajab, {Mohd Shaiful} and Chia, {Chin Hua} and Sarani Zakaria and Rahman, {Irman Abdul} and Salit, {Mohd Sapuan}",
year = "2013",
month = "9",
day = "1",
doi = "10.1016/j.jece.2013.06.012",
language = "English",
volume = "1",
pages = "460--465",
journal = "Journal of Environmental Chemical Engineering",
issn = "2213-3437",
publisher = "Elsevier BV",
number = "3",

}

Alkaline-treated cocoa pod husk as adsorbent for removing methylene blue from aqueous solutions. / Pua, Fei Ling; Sajab, Mohd Shaiful; Chia, Chin Hua; Zakaria, Sarani; Rahman, Irman Abdul; Salit, Mohd Sapuan.

In: Journal of Environmental Chemical Engineering, Vol. 1, No. 3, 01.09.2013, p. 460-465.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Alkaline-treated cocoa pod husk as adsorbent for removing methylene blue from aqueous solutions

AU - Pua, Fei Ling

AU - Sajab, Mohd Shaiful

AU - Chia, Chin Hua

AU - Zakaria, Sarani

AU - Rahman, Irman Abdul

AU - Salit, Mohd Sapuan

PY - 2013/9/1

Y1 - 2013/9/1

N2 - In this study, cocoa pod husk (CPH) was used as adsorbent for removing methylene blue (MB) from aqueous solutions. Before the adsorption studies, the CPH was treated using sodium hydroxide (NaOH) to increase its adsorption capacity toward methylene blue (MB). The NaOH-treated CPH was characterized by SEM and FTIR analyses. Lignin was removed after the NaOH treatment, leaving higher accessible surface for adsorption. The adsorption performances of the CPH were investigated in terms of adsorption kinetics and isotherms under different conditions, i.e., pH, initial MB concentration, and temperature. Freundlich isotherm fits the adsorption experiment data better than that of Langmuir and Sips isotherms, suggesting the heterogeneous adsorption behavior of MB on the CPH. The maximum adsorption capacity of the NaOH-treated CPH toward MB is 263.9 mg/g. Pseudo-second order gives the better correlation to predict the kinetic process. The adsorption of MB on the NaOH-treated CPH was found to be endothermic and spontaneous.

AB - In this study, cocoa pod husk (CPH) was used as adsorbent for removing methylene blue (MB) from aqueous solutions. Before the adsorption studies, the CPH was treated using sodium hydroxide (NaOH) to increase its adsorption capacity toward methylene blue (MB). The NaOH-treated CPH was characterized by SEM and FTIR analyses. Lignin was removed after the NaOH treatment, leaving higher accessible surface for adsorption. The adsorption performances of the CPH were investigated in terms of adsorption kinetics and isotherms under different conditions, i.e., pH, initial MB concentration, and temperature. Freundlich isotherm fits the adsorption experiment data better than that of Langmuir and Sips isotherms, suggesting the heterogeneous adsorption behavior of MB on the CPH. The maximum adsorption capacity of the NaOH-treated CPH toward MB is 263.9 mg/g. Pseudo-second order gives the better correlation to predict the kinetic process. The adsorption of MB on the NaOH-treated CPH was found to be endothermic and spontaneous.

UR - http://www.scopus.com/inward/record.url?scp=84883778898&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84883778898&partnerID=8YFLogxK

U2 - 10.1016/j.jece.2013.06.012

DO - 10.1016/j.jece.2013.06.012

M3 - Article

AN - SCOPUS:84883778898

VL - 1

SP - 460

EP - 465

JO - Journal of Environmental Chemical Engineering

JF - Journal of Environmental Chemical Engineering

SN - 2213-3437

IS - 3

ER -