Academic Journal
Catalytic oxidation of bisphenol A with Co$^{3+}$ rich spinel Co$_3$O$_4$
| العنوان: | Catalytic oxidation of bisphenol A with Co$^{3+}$ rich spinel Co$_3$O$_4$ |
|---|---|
| المؤلفون: | Singh, Seema, Kumar, Praveen, Patidar, Ritesh, Srivastava, Vimal Chandra, Lo, Shang-Lien, Lavrenčič Štangar, Urška |
| المصدر: | Journal of environmental chemical engineering, vol. 11, no. 3, 110023, 2023. ; ISSN: 2213-3437 |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2023 |
| المجموعة: | University of Ljubljana: Repository (RUJ) / Repozitorij Univerze v Ljubljani |
| مصطلحات موضوعية: | cobalt(II,III) oxide nanospheres, peroxymonosulfate activation, bisphenol A, degradation kinetics, mineralization mechanism, Co$_3$O$_4$ nanospheres, PMS, BPA, kobaltov(II,III) oksid, nanodelci, aktivacija peroksimonosulfata, bisfenol A, kinetika razgradnje, mehanizem mineralizacije, info:eu-repo/classification/udc/542.943'7 |
| الوصف: | Bisphenol A (BPA) is a toxic substance that is released into the environment mainly from paint, polymer, plastics and pharmaceutical industries. In this study, spinel Co$_3$O$_4$ consisting of Co$^{2+}$/(Co$^{3+}$)$_2$O$_4$ nanospheres with excellent specific surface properties were systematically synthesized via a simple hydrothermal approach preceded by calcination. The as-synthesized Co$_3$O$_4$ spinels were used for peroxymonosulfate (PMS) activation to reduce the bisphenol A (BPA). The effects of operating parameters including PMS dosage, initial pH, catalyst dosage, and co-existing ions were detected during the BPA degradation. It was observed that at neutral pH, the nano-Co$_3$O$_4$/PMS system effectively degrades the BPA (∼92%) with very low cobalt leaching and excellent recyclability. Control experiment analysis confirms the magnificent performance of the Co$_3$O$_4$/PMS system and the synergistic interaction between Co$_3$O$_4$ and PMS. Various characterization techniques were used to determine the thermal, textural and structural properties. A chemical quenching study confirmed that both hydroxyl radicals ($^•$OH) and sulfate radicals (SO$_4^{•−}$) promotes BPA oxidation. The chloride (Cl$^-$) ions and dihydrogen phosphate ions (H$_2$PO$_4^-$) have little inhibition effect while adding humic acid (HA) and HCO$_3^-$ inhibits the BPA oxidation. Separation techniques such as high-performance liquid chromatography (HPLC) coupled with mass spectroscopy (MS) were used to identify the oxidative by-products and the mineralization pathway of BPA reduction. First-order pseudo-kinetics were observed for BPA degradation. However, the power law model also fits n$^{th}$-order kinetics models. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf; text/url |
| اللغة: | English |
| Relation: | https://repozitorij.uni-lj.si/IzpisGradiva.php?id=146101; https://repozitorij.uni-lj.si/Dokument.php?id=169217&dn=; https://repozitorij.uni-lj.si/Dokument.php?id=169216&dn=; https://plus.cobiss.net/cobiss/si/sl/bib/151397379; http://hdl.handle.net/20.500.12556/RUL-146101 |
| الاتاحة: | https://repozitorij.uni-lj.si/IzpisGradiva.php?id=146101 https://repozitorij.uni-lj.si/Dokument.php?id=169217&dn= https://repozitorij.uni-lj.si/Dokument.php?id=169216&dn= https://plus.cobiss.net/cobiss/si/sl/bib/151397379 https://hdl.handle.net/20.500.12556/RUL-146101 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.5205D747 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |