Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways
Glyphosate (N-phosphonomethyl glycine) is a non-selective, broad-spectrum organophosphate herbicide. Its omnipresent application with large quantity has made glyphosate as a problematic contaminant in water. Therefore, an effective technology is urgently required to remove glyphosate and its metabol...
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| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/3/775 |
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| author | Fan Li Thomas Shean Yaw Choong Luqman Chuah Abdullah Siti Nurul Ain Md. Jamil Nurul Nazihah Amerhaider Nuar |
| author_facet | Fan Li Thomas Shean Yaw Choong Luqman Chuah Abdullah Siti Nurul Ain Md. Jamil Nurul Nazihah Amerhaider Nuar |
| author_sort | Fan Li |
| collection | DOAJ |
| description | Glyphosate (N-phosphonomethyl glycine) is a non-selective, broad-spectrum organophosphate herbicide. Its omnipresent application with large quantity has made glyphosate as a problematic contaminant in water. Therefore, an effective technology is urgently required to remove glyphosate and its metabolites from water. In this study, calcium peroxide nanoparticles (nCPs) were functioned as an oxidant to produce sufficient hydroxyl free radicals (·OH) with the presence of Fe<sup>2+</sup> as a catalyst using a Fenton-based system. The nCPs with small particle size (40.88 nm) and high surface area (28.09 m<sup>2</sup>/g) were successfully synthesized via a co-precipitation method. The synthesized nCPs were characterized using transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), Brunauer–Emmett–Teller analysis (BET), dynamic light scattering (DLS), and field emission scanning electron microscopy (FESEM) techniques. Under the given conditions (pH = 3.0, initial nCPs dosage = 0.2 g, Ca<sup>2+</sup>/Fe<sup>2+</sup> molar ratio = 6, the initial glyphosate concentration = 50 mg/L, RT), 99.60% total phosphorus (TP) removal and 75.10% chemical oxygen demand (COD) removal were achieved within 75 min. The degradation process fitted with the Behnajady–Modirshahla–Ghanbery (BMG) kinetics model. The H<sub>2</sub>O<sub>2</sub> release performance and proposed degradation pathways were also reported. The results demonstrated that calcium peroxide nanoparticles are an efficient oxidant for glyphosate removal from aqueous systems. |
| first_indexed | 2024-03-11T09:28:02Z |
| format | Article |
| id | doaj.art-1625113eac3d4fe5aa34525fa039e721 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T09:28:02Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-1625113eac3d4fe5aa34525fa039e7212023-11-16T17:50:25ZengMDPI AGPolymers2073-43602023-02-0115377510.3390/polym15030775Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation PathwaysFan Li0Thomas Shean Yaw Choong1Luqman Chuah Abdullah2Siti Nurul Ain Md. Jamil3Nurul Nazihah Amerhaider Nuar4Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Selangor, MalaysiaGlyphosate (N-phosphonomethyl glycine) is a non-selective, broad-spectrum organophosphate herbicide. Its omnipresent application with large quantity has made glyphosate as a problematic contaminant in water. Therefore, an effective technology is urgently required to remove glyphosate and its metabolites from water. In this study, calcium peroxide nanoparticles (nCPs) were functioned as an oxidant to produce sufficient hydroxyl free radicals (·OH) with the presence of Fe<sup>2+</sup> as a catalyst using a Fenton-based system. The nCPs with small particle size (40.88 nm) and high surface area (28.09 m<sup>2</sup>/g) were successfully synthesized via a co-precipitation method. The synthesized nCPs were characterized using transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), Brunauer–Emmett–Teller analysis (BET), dynamic light scattering (DLS), and field emission scanning electron microscopy (FESEM) techniques. Under the given conditions (pH = 3.0, initial nCPs dosage = 0.2 g, Ca<sup>2+</sup>/Fe<sup>2+</sup> molar ratio = 6, the initial glyphosate concentration = 50 mg/L, RT), 99.60% total phosphorus (TP) removal and 75.10% chemical oxygen demand (COD) removal were achieved within 75 min. The degradation process fitted with the Behnajady–Modirshahla–Ghanbery (BMG) kinetics model. The H<sub>2</sub>O<sub>2</sub> release performance and proposed degradation pathways were also reported. The results demonstrated that calcium peroxide nanoparticles are an efficient oxidant for glyphosate removal from aqueous systems.https://www.mdpi.com/2073-4360/15/3/775calcium peroxidenanoparticlesAOPskinetics studyH<sub>2</sub>O<sub>2</sub> releaseagricultural wastewater |
| spellingShingle | Fan Li Thomas Shean Yaw Choong Luqman Chuah Abdullah Siti Nurul Ain Md. Jamil Nurul Nazihah Amerhaider Nuar Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways Polymers calcium peroxide nanoparticles AOPs kinetics study H<sub>2</sub>O<sub>2</sub> release agricultural wastewater |
| title | Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways |
| title_full | Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways |
| title_fullStr | Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways |
| title_full_unstemmed | Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways |
| title_short | Effective Removal of Glyphosate from Aqueous Systems Using Synthesized PEG-Coated Calcium Peroxide Nanoparticles: Kinetics Study, H<sub>2</sub>O<sub>2</sub> Release Performance and Degradation Pathways |
| title_sort | effective removal of glyphosate from aqueous systems using synthesized peg coated calcium peroxide nanoparticles kinetics study h sub 2 sub o sub 2 sub release performance and degradation pathways |
| topic | calcium peroxide nanoparticles AOPs kinetics study H<sub>2</sub>O<sub>2</sub> release agricultural wastewater |
| url | https://www.mdpi.com/2073-4360/15/3/775 |
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