Xilin Liu, Fuwei Yang, Zhiqian Yao, Xuan Wang, Pengfei Liu, Jiayin Li, Hu Zhou
{"title":"Activation of Peroxymonosulfate by Co–Al-LDH@PU Membrane for Efficient Removal of Tetracycline Hydrochloride","authors":"Xilin Liu, Fuwei Yang, Zhiqian Yao, Xuan Wang, Pengfei Liu, Jiayin Li, Hu Zhou","doi":"10.1007/s11814-025-00486-1","DOIUrl":null,"url":null,"abstract":"<div><p>Immobilizing the activator on the carrier is an effective strategy to solve the difficult recovery and secondary pollution of activator in advanced oxidation process. In this study, cobalt–aluminum-layered double hydroxide (activator) was immobilized on a PU membrane carrier (Co–Al-LDH@PU membrane) by a hydrothermal in situ growth technique to form a recyclable peroxymonosulfate (PMS) activator. The as-prepared Co–Al-LDH@PU membrane exhibited an excellent ability to activate PMS for the removal of tetracycline hydrochloride (TC). 97.20% of TC (30 mg L<sup>−1</sup>) was eliminated with Co–Al-LDH@PU membrane (3 × 3 cm<sup>2</sup>) and 1.6 mM PMS at pH 5.5 in 30 min. Singlet oxygen (<sup>1</sup>O<sub>2</sub>) was verified as dominant reactive oxygen species responsible for TC removal via quenching tests. Mechanism investigation suggested that the redox cycle of Co<sup>2+</sup>/Co<sup>3+</sup> on the surface of Co–Al-LDH@PU membrane was crucial for PMS activation. Meanwhile, Co–Al-LDH@PU membrane displayed the ideal reusability and versatility.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 11","pages":"2583 - 2599"},"PeriodicalIF":3.2000,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Korean Journal of Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11814-025-00486-1","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Immobilizing the activator on the carrier is an effective strategy to solve the difficult recovery and secondary pollution of activator in advanced oxidation process. In this study, cobalt–aluminum-layered double hydroxide (activator) was immobilized on a PU membrane carrier (Co–Al-LDH@PU membrane) by a hydrothermal in situ growth technique to form a recyclable peroxymonosulfate (PMS) activator. The as-prepared Co–Al-LDH@PU membrane exhibited an excellent ability to activate PMS for the removal of tetracycline hydrochloride (TC). 97.20% of TC (30 mg L−1) was eliminated with Co–Al-LDH@PU membrane (3 × 3 cm2) and 1.6 mM PMS at pH 5.5 in 30 min. Singlet oxygen (1O2) was verified as dominant reactive oxygen species responsible for TC removal via quenching tests. Mechanism investigation suggested that the redox cycle of Co2+/Co3+ on the surface of Co–Al-LDH@PU membrane was crucial for PMS activation. Meanwhile, Co–Al-LDH@PU membrane displayed the ideal reusability and versatility.
期刊介绍:
The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.