Recently, the enhancing role of hydrogen peroxide (HO), a self-decay product of ferrate (Fe(VI)), on Fe(VI) reactivity has received increasing attention. In this study, we found that calcium peroxide (CaO) as a slow-releasing reagent of HO could also enhance the Fe(VI) performance for removing sulfamethoxazole (SMX). Compared with sole Fe(VI), sole CaO and Fe(VI)-HO systems, the Fe(VI)-CaO system showed higher reactivity to remove SMX. The radical scavenger and chemical probe test results indicated that the better oxidation performance of Fe(VI)-CaO system than Fe(VI) alone was ascribed to the generation of Fe(Ⅳ) and Fe(Ⅴ) rather than OH. In addition, the performance of Fe(VI)-CaO system for degradation of contaminants was also superior to Fe(VI)-NaSO, Fe(VI)-NaHSO and Fe(VI)-NaSO systems under the same experimental conditions. Moreover, the effects of critical operating parameters, inorganic anions, inorganic cations, and humic acid on the degradation of SMX by Fe(VI)-CaO system were revealed. The Fe(VI)-CaO system exhibited good applicability in authentic water. Finally, the underlying degradation intermediates of SMX by Fe(VI)-CaO system and their toxicity were confirmed. In conclusion, this study provides a new strategy for enhancing the oxidation capacity of Fe(VI) and comprehensively reveals the oxidation mechanism.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jhazmat.2021.128045 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Systematic application of saliency maps to explain the decisions of convolutional neural networks for glaucoma diagnosis based on disc and cup geometry.
Biomed Phys Eng Express
January 2025
Department of Ophthalmology, Hospital Universitario de Canarias, Carretera Ofra S/N, La Laguna, Santa Cruz de Tenerife, 38320, SPAIN.
This paper systematically evaluates saliency methods as explainability tools for convolutional neural networks trained to diagnose glaucoma using simplified eye fundus images that contain only disc and cup outlines. These simplified images, a methodological novelty, were used to relate features highlighted in the saliency maps to the geometrical clues that experts consider in glaucoma diagnosis. Despite their simplicity, these images retained sufficient information for accurate classification, with balanced accuracies ranging from 0.
View Article and Find Full Text PDFBoreal forests are heading for an open state.
Proc Natl Acad Sci U S A
January 2025
Environmental Sciences Department, Wageningen University & Research, Wageningen 6708 PB, The Netherlands.
The boreal forest biome is warming four times faster than the global average. Changes so far are moderate, but time lags in responses may transiently maintain forest states which are no longer supported by current environmental conditions. Here, we explore whether tree cover dynamics hint at the state to which the biome may be shifting.
View Article and Find Full Text PDFThe Impact of Professional Governance on Hope, Resilience, and Empowerment.
J Nurs Adm
December 2024
Author Affiliations: Research Nurse Scientist (Dr Partridge), Roper St Francis Healthcare; Associate Professor (Dr Jorgenson), College of Nursing, Charleston Southern University; Associate Professor (Dr Johnson), College of Nursing, Medical University of South Carolina; and Director of Nursing Excellence (Dr Lott), Roper St Francis Healthcare, Charleston, South Carolina.
Objective: The purpose of this cross-sectional descriptive study was to examine the relationship of professional governance, resilience, and empowerment among RNs in clinical practice in 1 healthcare system.
Background: Given the emotional and physical demands of nursing, especially in recent years, exploring ways that hope-inducing and resilience-building models can support professional practice is vital to the current and future nursing workforce.
Methods: An anonymous survey consisting of demographic questions, the Adult Hope Scale, Connor-Davidson Resilience Scale, and the Conditions for Work Effectiveness Questionnaire II was offered to 1450 RNs in a nonprofit community-based healthcare system for volunteer participation.
Nurse Leader Perspectives and Experiences on Caregiver Support Following a Serious Medical Error.
J Nurs Adm
December 2024
Author Affiliations: Assistant Professor (Dr Prothero) and Nurse (Sorhus and Huefner), College of Nursing, Brigham Young University, Provo, Utah.
Objective: This study explored nurse leaders' perspectives and experiences in supporting nurses following a serious medical error.
Background: Appropriate support is crucial for nurses following an error. Authentic leadership provides an environment of psychological safety and establishes a patient safety culture.
Practical Steps Supporting Professional Publications for Leadership and Teams.
J Nurs Adm
December 2024
Author Affiliations: Senior Operations Leader, Analytics and Nurse Scientist (Dr Kim), Kaiser Permanente National Patient Care Services, Oakland; Assistant Clinical Professor (Dr Kim), Community Health Systems, University of California, San Francisco School of Nursing, San Francisco; Professor Emeritus (Dr Latham), California State University, Fullerton, School of Nursing, Fullerton; Education Program Coordinator (Dr Krom), Assistant Professor of Medicine (Dr Krom), Cedars-Sinai Marina Del Ray Hospital, Marina Del Ray; Director (Dr Failla), Nursing Workforce Transitions, Caster Nursing Institute, Sharp HealthCare, San Diego; Regional Director and Nurse Scientist (Dr Kawar), Nursing Research and EBP Program, Kaiser Permanente Southern California and Hawaii Patient Care Services, Pasadena.
Disseminating research or evidence-based practice is not straightforward. As more clinical nurses, executive nurse leaders, nurse scientists, and faculty contribute to new knowledge, there is an increasing need to support the processes to publish and disseminate manuscripts to advance healthcare. Nurse administrators and leaders are key influencers and supporters to bolster expertise and resources to publish.
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!