A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media
In this work, we removed copper (II) from an aqueous solution by using zeolite modified with a silicon-organic monomer (3-aminopropyltriethoxysilane; APTES) depending on the pH, time, temperature, and initial concentration of Cu(II) ions. To confirm the modification process and assess the interactio...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/12/22/11344 |
| _version_ | 1797466057518088192 |
|---|---|
| author | Nasanjargal Shirendev Munkhpurev Bat-Amgalan Naoki Kano Hee-Joon Kim Burmaa Gunchin Batdemberel Ganbat Ganchimeg Yunden |
| author_facet | Nasanjargal Shirendev Munkhpurev Bat-Amgalan Naoki Kano Hee-Joon Kim Burmaa Gunchin Batdemberel Ganbat Ganchimeg Yunden |
| author_sort | Nasanjargal Shirendev |
| collection | DOAJ |
| description | In this work, we removed copper (II) from an aqueous solution by using zeolite modified with a silicon-organic monomer (3-aminopropyltriethoxysilane; APTES) depending on the pH, time, temperature, and initial concentration of Cu(II) ions. To confirm the modification process and assess the interaction between the modified zeolite and Cu(II), we performed instrumental analyses (XRD, SEM/EDX, TGA/DTA, BET, FT-IR, and XPS). We determined the maximum adsorption capacities of the modified zeolite for Cu(II) to be 4.50, 6.244, 6.96, and 20.66 mg/g at <i>T</i> = 25 °C (pH = 5, <i>t</i> = 8 h) when the initial concentrations of Cu(II) were 50, 100, 200, and 400 mg/L, respectively. According to the adsorption thermodynamics and kinetics, the second-order reaction controls the adsorption process. Based on the two isotherm models (Langmuir and Freundlich) with constant values (<i>K<sub>L</sub></i> = 0.144, <i>n</i> = 2.764) and the correlation coefficients (<i>R</i><sup>2</sup> = 0.8946, <i>R</i><sup>2</sup> = 0.9216), we concluded that the Cu(II) adsorption onto the modified zeolite could be followed by the Freundlich isotherm model rather than the Langmuir isotherm model. The modified zeolite could be an effective material for the removal of Cu(II) from aqueous solutions. |
| first_indexed | 2024-03-09T18:30:38Z |
| format | Article |
| id | doaj.art-c2b82d1086be4844926fd947572ee244 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T18:30:38Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c2b82d1086be4844926fd947572ee2442023-11-24T07:33:47ZengMDPI AGApplied Sciences2076-34172022-11-0112221134410.3390/app122211344A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous MediaNasanjargal Shirendev0Munkhpurev Bat-Amgalan1Naoki Kano2Hee-Joon Kim3Burmaa Gunchin4Batdemberel Ganbat5Ganchimeg Yunden6Department of Chemical Engineering, School of Applied Sciences, Mongolian University of Science and Technology, Ulaanbaatar 14191, MongoliaDepartment of Chemical Engineering, School of Applied Sciences, Mongolian University of Science and Technology, Ulaanbaatar 14191, MongoliaDepartment of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, 8050 Ikarashi 2-Nocho, Nishi-ku, Niigata 950-2181, JapanDepartment of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, 8050 Ikarashi 2-Nocho, Nishi-ku, Niigata 950-2181, JapanInstitute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar 13330, MongoliaDepartment of Physics, School of Applied Sciences, Mongolian University of Science and Technology, Ulaanbaatar 14191, MongoliaDepartment of Chemical Engineering, School of Applied Sciences, Mongolian University of Science and Technology, Ulaanbaatar 14191, MongoliaIn this work, we removed copper (II) from an aqueous solution by using zeolite modified with a silicon-organic monomer (3-aminopropyltriethoxysilane; APTES) depending on the pH, time, temperature, and initial concentration of Cu(II) ions. To confirm the modification process and assess the interaction between the modified zeolite and Cu(II), we performed instrumental analyses (XRD, SEM/EDX, TGA/DTA, BET, FT-IR, and XPS). We determined the maximum adsorption capacities of the modified zeolite for Cu(II) to be 4.50, 6.244, 6.96, and 20.66 mg/g at <i>T</i> = 25 °C (pH = 5, <i>t</i> = 8 h) when the initial concentrations of Cu(II) were 50, 100, 200, and 400 mg/L, respectively. According to the adsorption thermodynamics and kinetics, the second-order reaction controls the adsorption process. Based on the two isotherm models (Langmuir and Freundlich) with constant values (<i>K<sub>L</sub></i> = 0.144, <i>n</i> = 2.764) and the correlation coefficients (<i>R</i><sup>2</sup> = 0.8946, <i>R</i><sup>2</sup> = 0.9216), we concluded that the Cu(II) adsorption onto the modified zeolite could be followed by the Freundlich isotherm model rather than the Langmuir isotherm model. The modified zeolite could be an effective material for the removal of Cu(II) from aqueous solutions.https://www.mdpi.com/2076-3417/12/22/11344adsorptionAPTES (3-aminopropyltriethoxysilane)isothermsheavy metal |
| spellingShingle | Nasanjargal Shirendev Munkhpurev Bat-Amgalan Naoki Kano Hee-Joon Kim Burmaa Gunchin Batdemberel Ganbat Ganchimeg Yunden A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media Applied Sciences adsorption APTES (3-aminopropyltriethoxysilane) isotherms heavy metal |
| title | A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media |
| title_full | A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media |
| title_fullStr | A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media |
| title_full_unstemmed | A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media |
| title_short | A Natural Zeolite Developed with 3-Aminopropyltriethoxysilane and Adsorption of Cu(II) from Aqueous Media |
| title_sort | natural zeolite developed with 3 aminopropyltriethoxysilane and adsorption of cu ii from aqueous media |
| topic | adsorption APTES (3-aminopropyltriethoxysilane) isotherms heavy metal |
| url | https://www.mdpi.com/2076-3417/12/22/11344 |
| work_keys_str_mv | AT nasanjargalshirendev anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT munkhpurevbatamgalan anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT naokikano anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT heejoonkim anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT burmaagunchin anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT batdemberelganbat anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT ganchimegyunden anaturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT nasanjargalshirendev naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT munkhpurevbatamgalan naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT naokikano naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT heejoonkim naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT burmaagunchin naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT batdemberelganbat naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia AT ganchimegyunden naturalzeolitedevelopedwith3aminopropyltriethoxysilaneandadsorptionofcuiifromaqueousmedia |