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Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents

Adsorption of inorganic mercury [Hg(II)] and organic methylmercury [MeHg(II)] ions onto dye-affinity agrowaste (dye-AW) was investigated. The dye-affinity adsorbents were prepared by the chemical-thermal reaction between the agrowaste (AW) and dye solutions [i.e., Reactive Red 120 (RR), Reactive Bla...

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Main Authors: Saman, Norasikin, Johari, Khairiraihanna, Song, Shiow Tien, Kong, Helen, Cheu, Siew Chin, Mat, Hanapi
Format: Article
Published: John Wiley and Sons Inc. 2019
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/89238/
http://dx.doi.org/10.1002/ep.12915
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spelling my.utm.892382021-02-22T06:01:15Z http://eprints.utm.my/id/eprint/89238/ Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents Saman, Norasikin Johari, Khairiraihanna Song, Shiow Tien Kong, Helen Cheu, Siew Chin Mat, Hanapi TP Chemical technology Adsorption of inorganic mercury [Hg(II)] and organic methylmercury [MeHg(II)] ions onto dye-affinity agrowaste (dye-AW) was investigated. The dye-affinity adsorbents were prepared by the chemical-thermal reaction between the agrowaste (AW) and dye solutions [i.e., Reactive Red 120 (RR), Reactive Black B (RB), Methylene Blue (MB), and Methyl Orange (MO)] under an alkaline condition. An almost perfect removal of Hg(II) was observed for all adsorbents, while for MeHg(II), the dye-affinity adsorbents have a higher removal efficiency than a pristine adsorbent. The maximum adsorption capacity (Q e, max ) of mercury ions onto the Reactive Red 120-modified AW (RR-AW) was 2.60 mmol g −1 for Hg(II) and 0.76 mmol g −1 for MeHg(II). The adsorption rate of Hg(II) was faster than MeHg(II), and both kinetic data followed the pseudo-second order kinetic model with the diffusion steps controlled by the film diffusion. The regenerated adsorbent showed very encouraging results especially toward Hg(II). The promising results were also obtained by using oilfield produced water (OPW) and natural gas condensate (NGC) samples. These studies finally demonstrated that the agricultural wastes initially loaded with dyes have the potential to be good mercury adsorbents. John Wiley and Sons Inc. 2019-03 Article PeerReviewed Saman, Norasikin and Johari, Khairiraihanna and Song, Shiow Tien and Kong, Helen and Cheu, Siew Chin and Mat, Hanapi (2019) Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents. Environmental Progress and Sustainable Energy, 38 (S1). S54-S67. ISSN 1944-7442 http://dx.doi.org/10.1002/ep.12915 DOI:10.1002/ep.12915
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Saman, Norasikin
Johari, Khairiraihanna
Song, Shiow Tien
Kong, Helen
Cheu, Siew Chin
Mat, Hanapi
Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
description Adsorption of inorganic mercury [Hg(II)] and organic methylmercury [MeHg(II)] ions onto dye-affinity agrowaste (dye-AW) was investigated. The dye-affinity adsorbents were prepared by the chemical-thermal reaction between the agrowaste (AW) and dye solutions [i.e., Reactive Red 120 (RR), Reactive Black B (RB), Methylene Blue (MB), and Methyl Orange (MO)] under an alkaline condition. An almost perfect removal of Hg(II) was observed for all adsorbents, while for MeHg(II), the dye-affinity adsorbents have a higher removal efficiency than a pristine adsorbent. The maximum adsorption capacity (Q e, max ) of mercury ions onto the Reactive Red 120-modified AW (RR-AW) was 2.60 mmol g −1 for Hg(II) and 0.76 mmol g −1 for MeHg(II). The adsorption rate of Hg(II) was faster than MeHg(II), and both kinetic data followed the pseudo-second order kinetic model with the diffusion steps controlled by the film diffusion. The regenerated adsorbent showed very encouraging results especially toward Hg(II). The promising results were also obtained by using oilfield produced water (OPW) and natural gas condensate (NGC) samples. These studies finally demonstrated that the agricultural wastes initially loaded with dyes have the potential to be good mercury adsorbents.
format Article
author Saman, Norasikin
Johari, Khairiraihanna
Song, Shiow Tien
Kong, Helen
Cheu, Siew Chin
Mat, Hanapi
author_facet Saman, Norasikin
Johari, Khairiraihanna
Song, Shiow Tien
Kong, Helen
Cheu, Siew Chin
Mat, Hanapi
author_sort Saman, Norasikin
title Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
title_short Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
title_full Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
title_fullStr Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
title_full_unstemmed Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
title_sort enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye-affinity adsorbents
publisher John Wiley and Sons Inc.
publishDate 2019
url http://eprints.utm.my/id/eprint/89238/
http://dx.doi.org/10.1002/ep.12915
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score 13.211869

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