Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil

Zinc was identified as one of the most toxic heavy metals and often found contaminating the water sources as a result of inefficient treatment of industrial effluent. In this work, Emulsion Liquid Membrane (ELM) was proposed as a method to minimize the concentration of zinc ions in an aqueous soluti...

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Main Author:	Abd Khalil, Afiqah Tasneem
Format:	Thesis
Language:	English
Published:	2022
Subjects:	Emulsions Extraction
Online Access:	https://ir.uitm.edu.my/id/eprint/78108/1/78108.pdf
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spelling	my-uitm-ir.781082023-06-01T06:15:19Z Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil 2022 Abd Khalil, Afiqah Tasneem Emulsions Extraction Zinc was identified as one of the most toxic heavy metals and often found contaminating the water sources as a result of inefficient treatment of industrial effluent. In this work, Emulsion Liquid Membrane (ELM) was proposed as a method to minimize the concentration of zinc ions in an aqueous solution. Instead of the common petroleum-based diluent, the emulsion is reformulated with waste cooking oil (WCO) which was collected from the food sector as a sustainable and cost-effective diluent. The formulation also includes Bis(2-ethylhexyl) phosphate (D2EHPA) as carrier, Span 80 as surfactant, sulfuric acid (H2SO4) as internal phase while zinc sulfate (ZnSO4) solution was used as the external phase. The WCO characterization and emulsion formation studies were first carried out by utilizing an electronic rheometer, microscope and FTIR analysis. The liquid-liquid extraction (LLE) method was then used to confirm the compatibility of WCO with D2EHPA for the extraction of zinc ions from the external phase, as well as to investigate the extraction equilibria of zinc extraction in ELM and the external phase pH. To obtain the best-operating conditions for zinc extraction using the newly formulated ELM, the extraction time and speed, carrier, surfactant and internal phase concentrations, and W/O ratio were varied. 95.17% of zinc ions were removed under the following conditions; 0.001M of H2SO4 in external phase, 700 rpm extraction speed for 10 minutes, 8 wt% of carrier and 4 wt% of surfactant concentrations, 1:4 of W/O ratio and 1 M of internal phase concentration. The use of WCO was proven as the alternative green diluent in ELM method substituting the toxic petroleum-based diluents. The findings of this study shall serve as a milestone in the development of a safer technology to treat heavy metal ions from aqueous solutions 2022 Thesis https://ir.uitm.edu.my/id/eprint/78108/ https://ir.uitm.edu.my/id/eprint/78108/1/78108.pdf text en public masters Universiti Teknologi MARA (UiTM) College of Engineering Puasa, Wahidah
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Puasa, Wahidah
topic	Emulsions Extraction
spellingShingle	Emulsions Extraction Abd Khalil, Afiqah Tasneem Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil
description	Zinc was identified as one of the most toxic heavy metals and often found contaminating the water sources as a result of inefficient treatment of industrial effluent. In this work, Emulsion Liquid Membrane (ELM) was proposed as a method to minimize the concentration of zinc ions in an aqueous solution. Instead of the common petroleum-based diluent, the emulsion is reformulated with waste cooking oil (WCO) which was collected from the food sector as a sustainable and cost-effective diluent. The formulation also includes Bis(2-ethylhexyl) phosphate (D2EHPA) as carrier, Span 80 as surfactant, sulfuric acid (H2SO4) as internal phase while zinc sulfate (ZnSO4) solution was used as the external phase. The WCO characterization and emulsion formation studies were first carried out by utilizing an electronic rheometer, microscope and FTIR analysis. The liquid-liquid extraction (LLE) method was then used to confirm the compatibility of WCO with D2EHPA for the extraction of zinc ions from the external phase, as well as to investigate the extraction equilibria of zinc extraction in ELM and the external phase pH. To obtain the best-operating conditions for zinc extraction using the newly formulated ELM, the extraction time and speed, carrier, surfactant and internal phase concentrations, and W/O ratio were varied. 95.17% of zinc ions were removed under the following conditions; 0.001M of H2SO4 in external phase, 700 rpm extraction speed for 10 minutes, 8 wt% of carrier and 4 wt% of surfactant concentrations, 1:4 of W/O ratio and 1 M of internal phase concentration. The use of WCO was proven as the alternative green diluent in ELM method substituting the toxic petroleum-based diluents. The findings of this study shall serve as a milestone in the development of a safer technology to treat heavy metal ions from aqueous solutions
format	Thesis
qualification_level	Master's degree
author	Abd Khalil, Afiqah Tasneem
author_facet	Abd Khalil, Afiqah Tasneem
author_sort	Abd Khalil, Afiqah Tasneem
title	Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil
title_short	Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil
title_full	Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil
title_fullStr	Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil
title_full_unstemmed	Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil
title_sort	waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / afiqah tasneem abd khalil
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	College of Engineering
publishDate	2022
url	https://ir.uitm.edu.my/id/eprint/78108/1/78108.pdf
_version_	1783736214324510720

Waste cooking oil based emulsion liquid membrane for zinc extraction from aqueous solution / Afiqah Tasneem Abd Khalil

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