Given the need for innovations in advanced oxidation processes to deal with challenges such as OH scavenging, this paper addresses the removal of pharmaceuticals with a large variety in ozone reactivity (k = 0.15-3 × 10 Ms) by use of the novel ozone-activated peroxymonosulfate (O/PMS) process. A clear improvement in removal efficiency (up to 5 times higher) is noticed as a result of the generation of SO- radicals, mainly for slow-ozone reacting compounds (k ≤ 250 Ms) and in the presence of a OH scavenger. Depending on the target compound, SO- are assessed to contribute for 50-90% to the overall removal of the micropollutants, both in single-compound and mixture experiments. Ozone-based PMS activation occurs at neutral to alkaline pH and, in the presence of a OH scavenger, removal efficiencies during O/PMS are up to 3 times higher than with the O/HO process. In optimizing the O/PMS process, a trade-off has to made between the desired removal and the PMS:O ratio. A molar ratio of 1:10 already results in a clear benefit compared to the ozonation process. Further increase of the PMS content up to a 1:1 ratio improved the removal by an additional factor of 1.3-1.5.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jhazmat.2018.07.071 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Protective Effects of Hydrogen Treatment Against High Glucose-Induced Oxidative Stress and Apoptosis via Inhibition of the AGEs/RAGE/NF-κB Signaling Pathway in Skin Cells.
Endocr Metab Immune Disord Drug Targets
January 2025
Department of Burn and Plastic Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.
Background: Diabetic wounds are major clinical challenges, often complicated by oxidative stress and free radical generation. Hydrogen (H2), a selective antioxidant, offers potential as a therapeutic agent for chronic diabetic wounds. However, its precise mechanisms remain underexplored.
View Article and Find Full Text PDFCurrent Treatment Paradigm and Approach to Advanced Hepatocellular Carcinoma.
Cureus
December 2024
Hematology and Oncology, Roger Williams Medical Center, Boston University School of Medicine, Providence, USA.
Hepatocellular carcinoma (HCC) is one of the most common forms of primary liver cancer worldwide. Herein, we present a review article that provides a broad overview of the current landscape of HCC, including the etiology, potential risk factors, and molecular pathways that can serve as potential therapeutic targets. The risk factors tend to vary depending on the geographic distribution; hepatitis B-induced cirrhosis and HCC occur more frequently in Asia and Sub-Saharan Africa, whereas metabolic disorders are the culprits in Western Europe and the Americas.
View Article and Find Full Text PDFSpin effects in regulating the adsorption characteristics of metal ions.
Chem Sci
January 2025
School of Chemistry and Chemical Engineering, Shandong University 250100 Jinan China
Understanding the adsorption behavior of intermediates at interfaces is crucial for various heterogeneous systems, but less attention has been paid to metal species. This study investigates the manipulation of Co spin states in ZnCoO spinel oxides and establishes their impact on metal ion adsorption. Using electrochemical sensing as a metric, we reveal a quasi-linear relationship between the adsorption affinity of metal ions and the high-spin state fraction of Co sites.
View Article and Find Full Text PDFCharge Transfer Effect in Layered Cathodes Through MEMS-Based In Situ TEM Studies.
Small
January 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing WUT Nano Key Lab, Wuhan, Hubei, 430070, China.
The irreversible lattice oxygen release is the primary issue in layered oxide cathodes which is generally attributed to a consecutive phase transition with less lattice oxygen content. Herein, an anomalous metal segregation pathway is observed in oxygen vacancy defective layered cathodes, which happens far before the onset of phase transitions. The correlation of electron energy loss spectroscopy indicates that an early charge transfer from oxygen 2p to Mn 3d orbital is responsible.
View Article and Find Full Text PDFHighly Selective AIEgen-Based "Turn On" Fluorescent Imaging for Inflammation Detection.
Luminescence
January 2025
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China.
Hypochlorous acid (HClO) is released by immune cells in the immune system, and it helps the body fight off infections and inflammation by killing bacteria, viruses, and other pathogens. However, tissue damage or apoptosis may also be induced by excess HClO. On this basis, we designed the probe TPE-NS by choosing tetraphenylethylene (TPE) as the luminescent unit and dimethylthiocarbamoyl chloride as the recognition site.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!