Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption
The surface of Philippine natural zeolites (PNZs) was modified using the surfactant hexadecyltrimethylammonium chloride (HDTMA-Cl) to improve its adsorption capacity of sulfamethoxazole (SMX), a persistent organic pollutant and emerging contaminant. The PNZs were modified with HDTMA based on their 1...
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IOP Publishing
2024-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ad9082 |
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| author | Ethan Angelo P Gaw Julius Andrew P Nuñez |
| author_facet | Ethan Angelo P Gaw Julius Andrew P Nuñez |
| author_sort | Ethan Angelo P Gaw |
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| description | The surface of Philippine natural zeolites (PNZs) was modified using the surfactant hexadecyltrimethylammonium chloride (HDTMA-Cl) to improve its adsorption capacity of sulfamethoxazole (SMX), a persistent organic pollutant and emerging contaminant. The PNZs were modified with HDTMA based on their 100% and 200% external cation exchange capacity (ECEC) to form monolayer and bilayer HDTMA–modified zeolites (MHZ & BHZ). The unmodified zeolites (UZs) and surfactant–modified natural zeolites (SMNZs) were characterized using Fourier Transform Infrared Spectroscopy, Thermogravimetric Analysis-Derivative Thermogravimetry, Scanning Electron Microscopy with Energy Dispersive x-ray Spectroscopy, and X-Ray Diffraction to confirm the modification of the PNZs using HDTMA. The SMX adsorption of UZ and SMNZs were fitted using isotherm and kinetic models. It was determined that all zeolites showed a high degree of linearity relative to the Langmuir, Freundlich, and Temkin models. The maximum SMX adsorption of MHZ and BHZ was calculated to be 3.685 mg g ^−1 and 13.034 mg g ^−1 , respectively, exhibiting 1.6 times and 5.5 times more improved SMX adsorption than UZ. Kinetic models showed that UZ and SMNZ adhered to the pseudo-second order model. The results of this study highlight the promising increased SMX adsorption using SMNZs. |
| format | Article |
| id | doaj-art-573d2ec3f6504258b614dda778a8b7f6 |
| institution | Kabale University |
| issn | 2053-1591 |
| language | English |
| publishDate | 2024-01-01 |
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| spelling | doaj-art-573d2ec3f6504258b614dda778a8b7f62024-11-20T18:49:57ZengIOP PublishingMaterials Research Express2053-15912024-01-01111111550510.1088/2053-1591/ad9082Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorptionEthan Angelo P Gaw0https://orcid.org/0009-0007-7206-8601Julius Andrew P Nuñez1https://orcid.org/0000-0003-0035-0601Laboratory of Materials, Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines Manila , Taft Avenue Manila 1000, PhilippinesLaboratory of Materials, Department of Physical Sciences and Mathematics, College of Arts and Sciences, University of the Philippines Manila , Taft Avenue Manila 1000, PhilippinesThe surface of Philippine natural zeolites (PNZs) was modified using the surfactant hexadecyltrimethylammonium chloride (HDTMA-Cl) to improve its adsorption capacity of sulfamethoxazole (SMX), a persistent organic pollutant and emerging contaminant. The PNZs were modified with HDTMA based on their 100% and 200% external cation exchange capacity (ECEC) to form monolayer and bilayer HDTMA–modified zeolites (MHZ & BHZ). The unmodified zeolites (UZs) and surfactant–modified natural zeolites (SMNZs) were characterized using Fourier Transform Infrared Spectroscopy, Thermogravimetric Analysis-Derivative Thermogravimetry, Scanning Electron Microscopy with Energy Dispersive x-ray Spectroscopy, and X-Ray Diffraction to confirm the modification of the PNZs using HDTMA. The SMX adsorption of UZ and SMNZs were fitted using isotherm and kinetic models. It was determined that all zeolites showed a high degree of linearity relative to the Langmuir, Freundlich, and Temkin models. The maximum SMX adsorption of MHZ and BHZ was calculated to be 3.685 mg g ^−1 and 13.034 mg g ^−1 , respectively, exhibiting 1.6 times and 5.5 times more improved SMX adsorption than UZ. Kinetic models showed that UZ and SMNZ adhered to the pseudo-second order model. The results of this study highlight the promising increased SMX adsorption using SMNZs.https://doi.org/10.1088/2053-1591/ad9082natural zeolitesulfamethoxazolesurfactant-modifiedHDTMAadsorption isothermkinetics |
| spellingShingle | Ethan Angelo P Gaw Julius Andrew P Nuñez Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption Materials Research Express natural zeolite sulfamethoxazole surfactant-modified HDTMA adsorption isotherm kinetics |
| title | Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption |
| title_full | Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption |
| title_fullStr | Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption |
| title_full_unstemmed | Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption |
| title_short | Development of HDTMA-modified Philippine natural zeolite (PNZ) for sulfamethoxazole adsorption |
| title_sort | development of hdtma modified philippine natural zeolite pnz for sulfamethoxazole adsorption |
| topic | natural zeolite sulfamethoxazole surfactant-modified HDTMA adsorption isotherm kinetics |
| url | https://doi.org/10.1088/2053-1591/ad9082 |
| work_keys_str_mv | AT ethanangelopgaw developmentofhdtmamodifiedphilippinenaturalzeolitepnzforsulfamethoxazoleadsorption AT juliusandrewpnunez developmentofhdtmamodifiedphilippinenaturalzeolitepnzforsulfamethoxazoleadsorption |