Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions

How to completely remove toxic metals from water is still a serious challenge and is the mission that faces researchers and scientists today. In this research, zeolite A/copper oxide (CuO), zeolite A/zinc oxide (ZnO) and zeolite A/iron oxide (Fe3O4) nanocomposites (NCs) were prepared via a co-precip...

Full description

Saved in:

Bibliographic Details
Main Author:	Alswat, Abdullah Abdullah Naji
Format:	Thesis
Language:	English
Published:	2017
Subjects:	Metallic oxides - Absorption and adsorption
Online Access:	http://psasir.upm.edu.my/id/eprint/70817/1/FS%202017%208%20IR.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.70817
record_format	uketd_dc
spelling	my-upm-ir.708172019-08-06T04:02:38Z Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions 2017-02 Alswat, Abdullah Abdullah Naji How to completely remove toxic metals from water is still a serious challenge and is the mission that faces researchers and scientists today. In this research, zeolite A/copper oxide (CuO), zeolite A/zinc oxide (ZnO) and zeolite A/iron oxide (Fe3O4) nanocomposites (NCs) were prepared via a co-precipitation method. The effect of weight percentage (wt. %) of these metal oxides (MOs) to the zeolite was investigated to obtain the optimum MOs distribution and surface area. Zeolite-MOs nanocomposites were characterized by Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD) and energy dispersive X-ray fluorescence spectrometry (EDXRF). Nitrogen sorption isotherm was used to determine the specific surface areas, pore size and pore volume, while the surface was morphologically observed by transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The batch adsorption process was used to study the applicability of the nanocomposites to adsorb lead Pb(II) and arsenic As(V) from aqueous solutions. The effects of the adsorbent dosage, pH, initial metals concentration and contact time on the adsorption process wereinvestigated. XRD patterns showed that MOs peaks intensity increased as the intensities of zeolite peaks decreased. TEM images indicated a good distribution of MOs-nanoparticles (NPs) onto the zeolite framework and the cubic structure of the zeolite was maintained. The average particle size of MOs-NPs loaded on the surface of the zeolite was less than 20 nm. The highest surface area was at 8, 5, and 15 wt. % for zeolite A/CuO, zeolite A/ZnO and zeolite A/Fe3O4 NCs, respectively. Results revealed that in 30 minutes, 0.15 g and at pH 5, zeolite A/Fe3O4, zeolite A/ZnO and zeolite A/CuO NCs were able to adsorb 98.2, 93.1 and 83.7% of Pb(II) and 96.8 , 90.1 and 81.3% of As(V), respectively from100 mg/L aqueus solutions. The Langmuir isotherm model showed higher correlation coefficients and provided better agreement with the experimental data, while the adsorption kinetic followed the pseudo-second-order . The sorbents showed an economical and effective way adsorb toxic metals due to their ambient operation conditions, low-energy consumption and facile regeneration capability. Metallic oxides - Absorption and adsorption 2017-02 Thesis http://psasir.upm.edu.my/id/eprint/70817/ http://psasir.upm.edu.my/id/eprint/70817/1/FS%202017%208%20IR.pdf text en public doctoral Universiti Putra Malaysia Metallic oxides - Absorption and adsorption
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Metallic oxides - Absorption and adsorption
spellingShingle	Metallic oxides - Absorption and adsorption Alswat, Abdullah Abdullah Naji Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
description	How to completely remove toxic metals from water is still a serious challenge and is the mission that faces researchers and scientists today. In this research, zeolite A/copper oxide (CuO), zeolite A/zinc oxide (ZnO) and zeolite A/iron oxide (Fe3O4) nanocomposites (NCs) were prepared via a co-precipitation method. The effect of weight percentage (wt. %) of these metal oxides (MOs) to the zeolite was investigated to obtain the optimum MOs distribution and surface area. Zeolite-MOs nanocomposites were characterized by Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD) and energy dispersive X-ray fluorescence spectrometry (EDXRF). Nitrogen sorption isotherm was used to determine the specific surface areas, pore size and pore volume, while the surface was morphologically observed by transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The batch adsorption process was used to study the applicability of the nanocomposites to adsorb lead Pb(II) and arsenic As(V) from aqueous solutions. The effects of the adsorbent dosage, pH, initial metals concentration and contact time on the adsorption process wereinvestigated. XRD patterns showed that MOs peaks intensity increased as the intensities of zeolite peaks decreased. TEM images indicated a good distribution of MOs-nanoparticles (NPs) onto the zeolite framework and the cubic structure of the zeolite was maintained. The average particle size of MOs-NPs loaded on the surface of the zeolite was less than 20 nm. The highest surface area was at 8, 5, and 15 wt. % for zeolite A/CuO, zeolite A/ZnO and zeolite A/Fe3O4 NCs, respectively. Results revealed that in 30 minutes, 0.15 g and at pH 5, zeolite A/Fe3O4, zeolite A/ZnO and zeolite A/CuO NCs were able to adsorb 98.2, 93.1 and 83.7% of Pb(II) and 96.8 , 90.1 and 81.3% of As(V), respectively from100 mg/L aqueus solutions. The Langmuir isotherm model showed higher correlation coefficients and provided better agreement with the experimental data, while the adsorption kinetic followed the pseudo-second-order . The sorbents showed an economical and effective way adsorb toxic metals due to their ambient operation conditions, low-energy consumption and facile regeneration capability.
format	Thesis
qualification_level	Doctorate
author	Alswat, Abdullah Abdullah Naji
author_facet	Alswat, Abdullah Abdullah Naji
author_sort	Alswat, Abdullah Abdullah Naji
title	Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
title_short	Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
title_full	Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
title_fullStr	Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
title_full_unstemmed	Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
title_sort	preparation, characterization and application of zeolite a/metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions
granting_institution	Universiti Putra Malaysia
publishDate	2017
url	http://psasir.upm.edu.my/id/eprint/70817/1/FS%202017%208%20IR.pdf
_version_	1747812914599821312

Preparation, characterization and application of zeolite A/Metal oxides nanocomposites for adsorption of arsenic and lead from aqueous solutions

Similar Items