Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]

The uptake of Acid Blue 29 (AB29), Reactive Orange 16 (RO16) and Reactive Red 120 (RR120) from aqueous solutions by calcined (CLDH) and uncalcined Mg/Al layered double hydroxide (LDH) has been investigated. The adsorption process was conducted in a batch mode at 25 °C. Anionic dye removal was more e...

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Published in:Malaysian Journal of Analytical Sciences
Main Author: Sumari S.M.; Hamzah Z.; Kantasamy N.
Format: Article
Language:English
Published: Malaysian Society of Analytical Sciences 2016
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982311242&doi=10.17576%2fmjas-2016-2004-10&partnerID=40&md5=89ad45d315916db808fcfae8fdae2142
id 2-s2.0-84982311242
spelling 2-s2.0-84982311242
Sumari S.M.; Hamzah Z.; Kantasamy N.
Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
2016
Malaysian Journal of Analytical Sciences
20
4
10.17576/mjas-2016-2004-10
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982311242&doi=10.17576%2fmjas-2016-2004-10&partnerID=40&md5=89ad45d315916db808fcfae8fdae2142
The uptake of Acid Blue 29 (AB29), Reactive Orange 16 (RO16) and Reactive Red 120 (RR120) from aqueous solutions by calcined (CLDH) and uncalcined Mg/Al layered double hydroxide (LDH) has been investigated. The adsorption process was conducted in a batch mode at 25 °C. Anionic dye removal was more efficient using the CLDH rather than LDH. The adsorption process by CLDH involved reconstruction and hydration of the calcined LDH and intercalation of AB29, RO16 and RR120. Physical characterization using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR) were used to ascertain the 'memory effect' phenomenon that is structural reconstruction to regain its original LDH after rehydration. To gain insight into the mechanism of adsorption by CLDH, the pseudo-first order (PFO) and pseudo-second order (PSO) and intraparticle diffusion (IPD) kinetic models were used to analyse experimental data. Based on the correlation coefficient (R2), the PSO has better fitting (R2 = 0.987-1.00) compared to PFO (R2 = 0.867-0.990). Furthermore the values of maximum adsorption capacity, (qe) calculated from PSO model are consistent with the experimental qe indicating that the experimental kinetic data for AB29, RO16 and RR120 adsorption by CLDH are suitable for this model. Recycling of the adsorbent, in cycles of calcination-reconstruction process promised a possibility of regeneration of CLDH. © 2016, Malaysian Society of Analytical Sciences. All rights reserved.
Malaysian Society of Analytical Sciences
13942506
English
Article
All Open Access; Gold Open Access
author Sumari S.M.; Hamzah Z.; Kantasamy N.
spellingShingle Sumari S.M.; Hamzah Z.; Kantasamy N.
Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
author_facet Sumari S.M.; Hamzah Z.; Kantasamy N.
author_sort Sumari S.M.; Hamzah Z.; Kantasamy N.
title Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
title_short Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
title_full Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
title_fullStr Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
title_full_unstemmed Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
title_sort Adsorption of anionic dyes from aqueous solutions by calcined and uncalcined Mg/Al layered double hydroxide; [Penjerapan pewarna ionik daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin dan tanpa kalsin]
publishDate 2016
container_title Malaysian Journal of Analytical Sciences
container_volume 20
container_issue 4
doi_str_mv 10.17576/mjas-2016-2004-10
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982311242&doi=10.17576%2fmjas-2016-2004-10&partnerID=40&md5=89ad45d315916db808fcfae8fdae2142
description The uptake of Acid Blue 29 (AB29), Reactive Orange 16 (RO16) and Reactive Red 120 (RR120) from aqueous solutions by calcined (CLDH) and uncalcined Mg/Al layered double hydroxide (LDH) has been investigated. The adsorption process was conducted in a batch mode at 25 °C. Anionic dye removal was more efficient using the CLDH rather than LDH. The adsorption process by CLDH involved reconstruction and hydration of the calcined LDH and intercalation of AB29, RO16 and RR120. Physical characterization using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR) were used to ascertain the 'memory effect' phenomenon that is structural reconstruction to regain its original LDH after rehydration. To gain insight into the mechanism of adsorption by CLDH, the pseudo-first order (PFO) and pseudo-second order (PSO) and intraparticle diffusion (IPD) kinetic models were used to analyse experimental data. Based on the correlation coefficient (R2), the PSO has better fitting (R2 = 0.987-1.00) compared to PFO (R2 = 0.867-0.990). Furthermore the values of maximum adsorption capacity, (qe) calculated from PSO model are consistent with the experimental qe indicating that the experimental kinetic data for AB29, RO16 and RR120 adsorption by CLDH are suitable for this model. Recycling of the adsorbent, in cycles of calcination-reconstruction process promised a possibility of regeneration of CLDH. © 2016, Malaysian Society of Analytical Sciences. All rights reserved.
publisher Malaysian Society of Analytical Sciences
issn 13942506
language English
format Article
accesstype All Open Access; Gold Open Access
record_format scopus
collection Scopus
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