Contaminants of emerging concern (CECs) such as antibiotics have become a matter of worry in aquatic environments worldwide. Their presence in the environment has been increasing due to the inability of conventional wastewater and water treatments to annihilate them. Hence, attempts have been made to remove CECs using electrochemical oxidation (EO). Present study employed the low cost, active carbon based graphite sheet electrodes as anode and cathode to oxidize and degrade Amoxicillin (AMOX)- a β-lactum thiazolidine antibiotic. Optimization studies found pH 9, 45 mA cm, 81 cm electrode surface area, 6 mM electrolyte concentration and 60 min treatment time to be optimal for AMOX removal. Studies with varying concentrations of AMOX (20 mg L, 30 mg L and 40 mg L) found that increase in concentrations of AMOX require higher current densities and treatment time for better TOC removal. High performance liquid chromatography photo diode array (HPLC-PDA) studies found 94% removal for 40 mg L of AMOX at optimal conditions with 90% COD and 46% TOC removal. High resolution mass spectrometry (HRMS) studies using Ultra performance liquid chromatography-quadrupole time of flight-mass spectrometry (UPLC-Q-ToF-MS) identified major degradation mechanisms to be hydroxylation, β-lactum ring cleavage, breakage of thiazolidine ring chain from the aromatic ring and piperazinyl ring formation. The final byproducts of AMOX oxidation were carboxylic acids.
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http://dx.doi.org/10.1016/j.chemosphere.2023.140415 | DOI Listing |
J Orthop Surg Res
December 2024
School of Rehabilitation Medicine, Henan University of Chinese Medicine, Zhengzhou, China.
Objective: Ankle osteoarthritis is a debilitating condition that significantly impairs patients' quality of life. Platelet-rich plasma has emerged as a novel cellular therapy in clinical practice. This study evaluates the clinical efficacy of platelet-rich plasma (PRP) after intervention in ankle disorders, so as to provide strong evidence in support of clinical treatment.
View Article and Find Full Text PDFJ Intensive Care
December 2024
The University of Alabama at Birmingham, Birmingham, AL, USA.
Background: Fluid balance gap (FBgap-prescribed vs. achieved) is associated with hospital mortality. Downtime is an important quality indicator for the delivery of continuous renal replacement therapy (CRRT).
View Article and Find Full Text PDFJ Med Case Rep
December 2024
Department of Microbiology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia.
Background: Severe acute respiratory syndrome coronavirus 2 was found first in Wuhan and declared a pandemic by the World Health Organization. Coinfection with other respiratory viruses may occur, complicating the diagnosis and treatment of coronavirus disease 2019 . Herein, we identified a Karolinska Institute polyomavirus Stockholm 60 present in a nasopharyngeal swab of a patient with severe acute respiratory syndrome coronavirus 2 infection using next-generation sequencing with an enrichment method.
View Article and Find Full Text PDFRespir Res
December 2024
National Jewish Health, Denver, USA.
Background: We sought consensus among practising respiratory physicians on the prediction, identification and monitoring of progression in patients with fibrosing interstitial lung disease (ILD) using a modified Delphi process.
Methods: Following a literature review, statements on the prediction, identification and monitoring of progression of ILD were developed by a panel of physicians with specialist expertise. Practising respiratory physicians were sent a survey asking them to indicate their level of agreement with these statements on a binary scale or 7-point Likert scale (- 3 to 3), or to select answers from a list.
BMC Oral Health
December 2024
Department of Community Dentistry, Faculty of Dentistry, Chulalongkorn University, 34 Henri-Dunant rd., Wangmai, Pathumwan, Bangkok, 10330, Bangkok, Thailand.
Background: According to anecdotal reports, SDF's ability to arrest caries can be enhanced by light-curing in a clinical setting. The purpose of the present study was to explore the dental professionals' perceptions of using SDF and to understand the barriers and enabling factors to using SDF with and without light-curing.
Methods: A qualitative study was conducted with dental professionals who had experience with using SDF with and without light-curing.
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