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Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process

This work addresses the synergistic removal of nickel from the electroplating wastewater using a supported liquid membrane (SLM) process. The supported liquid membrane formulation consisting of Di-2-ethylhexyl phosphoric acid (D2EHPA), n-octanol, kerosene, and sulfuric acid as a carrier, synergist,...

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Main Authors: Raja Sulaiman, Raja Norimie, Othman, Norasikin
Format: Article
Published: Elsevier B.V. 2018
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/86540/
http://dx.doi.org/10.1016/j.cep.2018.10.006
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spelling my.utm.865402020-09-30T08:57:53Z http://eprints.utm.my/id/eprint/86540/ Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process Raja Sulaiman, Raja Norimie Othman, Norasikin TP Chemical technology This work addresses the synergistic removal of nickel from the electroplating wastewater using a supported liquid membrane (SLM) process. The supported liquid membrane formulation consisting of Di-2-ethylhexyl phosphoric acid (D2EHPA), n-octanol, kerosene, and sulfuric acid as a carrier, synergist, diluent, and stripping agent, respectively. The effects of several significant parameters namely D2EHPA, n-octanol, and sulfuric acid concentrations as well as feed and stripping phases flow rates were investigated. Results revealed that n-octanol as a synergist significantly affected the removal efficiency of nickel since it can modify the D2EHPA molecules in the membrane phase. Besides, a kinetic model for the nickel ion transport across SLM revealed that the transport resistances due to the diffusion across the membrane (Δorg), transport resistances due to the diffusion through the aqueous boundary layer (Δaq), thickness of the aqueous diffusion layer (daq), and diffusion coefficient of the nickel-carrier complex across the membrane (Dorg) were found to be 2.90 × 105 sm−1, 1.94 × 104 sm−1, 1.24 × 10−5 m and 7.20 × 10−10 m2s−1, respectively. Interestingly, an approach to a green process by incorporating palm oil as a diluent showed that it is feasible to be applied and offers a green SLM process in the future. Elsevier B.V. 2018-12 Article PeerReviewed Raja Sulaiman, Raja Norimie and Othman, Norasikin (2018) Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process. Chemical Engineering and Processing - Process Intensification, 134 . pp. 9-19. ISSN 0255-2701 http://dx.doi.org/10.1016/j.cep.2018.10.006 DOI:10.1016/j.cep.2018.10.006
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
Raja Sulaiman, Raja Norimie
Othman, Norasikin
Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process
description This work addresses the synergistic removal of nickel from the electroplating wastewater using a supported liquid membrane (SLM) process. The supported liquid membrane formulation consisting of Di-2-ethylhexyl phosphoric acid (D2EHPA), n-octanol, kerosene, and sulfuric acid as a carrier, synergist, diluent, and stripping agent, respectively. The effects of several significant parameters namely D2EHPA, n-octanol, and sulfuric acid concentrations as well as feed and stripping phases flow rates were investigated. Results revealed that n-octanol as a synergist significantly affected the removal efficiency of nickel since it can modify the D2EHPA molecules in the membrane phase. Besides, a kinetic model for the nickel ion transport across SLM revealed that the transport resistances due to the diffusion across the membrane (Δorg), transport resistances due to the diffusion through the aqueous boundary layer (Δaq), thickness of the aqueous diffusion layer (daq), and diffusion coefficient of the nickel-carrier complex across the membrane (Dorg) were found to be 2.90 × 105 sm−1, 1.94 × 104 sm−1, 1.24 × 10−5 m and 7.20 × 10−10 m2s−1, respectively. Interestingly, an approach to a green process by incorporating palm oil as a diluent showed that it is feasible to be applied and offers a green SLM process in the future.
format Article
author Raja Sulaiman, Raja Norimie
Othman, Norasikin
author_facet Raja Sulaiman, Raja Norimie
Othman, Norasikin
author_sort Raja Sulaiman, Raja Norimie
title Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process
title_short Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process
title_full Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process
title_fullStr Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process
title_full_unstemmed Synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of Di (2-ethylhexyl) phosphoric acid and n-octanol: Kinetic permeation study and approach for a green process
title_sort synergetic facilitated transport of nickel via supported liquid membrane process by a mixture of di (2-ethylhexyl) phosphoric acid and n-octanol: kinetic permeation study and approach for a green process
publisher Elsevier B.V.
publishDate 2018
url http://eprints.utm.my/id/eprint/86540/
http://dx.doi.org/10.1016/j.cep.2018.10.006
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score 13.211869

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