نتایج جستجو برای: persulfate
تعداد نتایج: 981 فیلتر نتایج به سال:
Stability and reusability are important characteristics of advanced catalysts for wastewater treatment. In this work, for the first time, sulfate radicals (SO4∙-) with a high oxidative potential (Eo = 2.5-3.1 V) were successfully activated from persulfate by a Fe78Si9B13 metallic glass. This alloy exhibited a superior surface stability and reusability while activating persulfate as indicated by...
BACKGROUND Occupational and environmental factors may be a cause of nonasthmatic eosinophilic bronchitis (NAEB). The diagnosis of occupational NAEB requires evidence of sputum eosinophilia. Nevertheless, a minority of patients are not able to produce suitable sputum specimens. METHODS This case report describes a 25-year-old woman, working as a hairdresser since the age of 20 years and handli...
بررسی کارایی پر سولفات سدیم فعال شده با پرتو فرا بنفش در حذف آنتی بیوتیک آفلوکساسین از محیط های آبی
Background and purpose: Pharmaceutical products, particularly antibiotics are emerging contaminants that cause major environmental challenges due to cumulative effects, different adverse effects, and leading to drug resistance. The aim of this experimental study was to evaluate the efficiency of advanced oxidation process by persulfate activated by UV in removal of ofloxacin from aqueous soluti...
Background and purpose: Antibiotics are extensively used in treatment of diseases. Metronidazole is an antimicrobial agent and is a nitroimidazole derivative, which is widely used in treatment of infectious diseases caused by bacteria and protozoa. This compound is irrefrangible, toxic, carcinogenic, mutagenic, and has high solubility in water. Advanced oxidation process is an effective method ...
Introduction. Azithromycin is among the broad-spectrum antibiotics that is widely available in various environmental systems and could have destructive effects on the ecosystem and human health due to its bacterial resistance. In this study, removal of azithromycin from wastewater using an advanced oxidation process of ultraviolet light with and without persulfate was investigated and effective...
The Mo-based polyoxometalates containing mono- and dicobalt(III) catalyst cores, [CoMo(6)O(24)H(6)](3-) and [Co(2)Mo(10)O(38)H(4)](6-), were found to serve as O(2)-evolving catalysts in a system consisting of tris(2,2'-bipyridine)ruthenium(II) (Ru(bpy)(3)(2+)) and sodium persulfate (S(2)O) in an aqueous borate buffer solution at pH 8.0. Kinetics of O(2) evolution reveals that the higher cobalt ...
Efficiency of Electro-Persulfate Process Optimized with Hydrogen Peroxide in Removal of Hospital Wastewater COD by Response Surface Methodology B. Bina[1], Y. Hajizadeh[2], S. Karimi[3], H. Ahmadnia[4], M. Meserghani[5] Received: 26/09/2017 Sent for Revision: 25/12/2017 Received Revised Manuscript: 05/05/2018 &nb...
This article describes a novel one-step method to prepare cellulose nanocrystals (CNCs) from bleached bagasse pulp via ammonium persulfate (APS) oxidation. The obtained persulfate oxidation cellulose nanocrystals (POCNs) were characterized for their microstructure, crystal properties, and chemical composition. The POCNs were successfully prepared with a total yield of 44.6%. Transmission electr...
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