نتایج جستجو برای: potassium ferrate

تعداد نتایج: 77778  

2015
Kejia Zhang Zhang Luo Tuqiao Zhang Naiyun Gao Yan Ma

Sulfa antibiotics are a family of typical broad-spectrum antibiotics, which have become one of the most frequently detected antibiotics in water, posing a great threat to human health and ecosystem. Potassium ferrate is a new type of high-efficiency multifunctional water treatment agent, collecting the effects of oxidation, adsorption, flocculation, coagulation, sterilization, and deodorization...

Background: Application of potassium ferrate is a chemical oxidation approach used for water and wastewater treatment. The aim of this study is to apply central composite design (CCD) and response surface methodology (RSM) to optimize potassium ferrate consumption in the treatment of wastewater from carpet industries. Methods: Samples in this experimental study were collected from wastewater...

2013
H. H. Bauer

Spectrophotometrlc and voltaanetric methods were developed for the analysis of potassium ferrate(VI) in dilute solutions, where the standard chromite method is inapplicable. A direct proportionality prevails between the ferrate concentration and the absorbance on the one hand, And the ferrate concentration and the ferrate reduction current on the other. However, voltaasetry has greater precisio...

2015
Yu-Ling Wei

Potassium ferrate (K2FeO4) is a multi-functional green reagent for water treatment with considerable combined effectiveness in oxidization, disinfection, coagulation, sterilization, adsorption, and deodorization, producing environment friendly Fe(III) end-products during the reactions. This study uses a simple method to lower Fe(VI) preparation cost by recycling iron from a spent steel pickling...

2005
Jia-Qian Jiang S. Wang A. Panagoulopoulos

The use of potassium ferrate(VI) as an alternative water treatment chemical for both drinking water and sewage treatment has been studied and is reported in this paper. The performance of potassium ferrate(VI) was evaluated in comparison with sodium hypochlorite (NaOCl) and NaOCl plus ferric sulphate (FS) and aluminium sulphate (AS). The effects of the dosages of ferrate(VI), NaOCl and FS/AS an...

Journal: :Biochemical Society transactions 1995
C Stevenson R J Davies

Endogenous iron in aerobic systems has been implicated in causing oxidative damage to nucleic acids and other cellular components [l]. Complex oxygenated ions of iron (IV) and iron (V), possibly formed as transient intermediates in Fenton reactions, have been postulated to contribute to this process [2]. These hypervalent iron species may be generatedty radjolysis of aqueous solutions containin...

Journal: :environmental health engineering and management 0
maryam moradnia environmental health engineering, health faculty, qazvin university of medical science, qazvin, iran masoud panahi fard environmental health engineering, health faculty, qazvin university of medical science, qazvin, iran kavoos dindarlo environmental health engineering, health faculty, hormozgan university of medical science, hormozgan, iran hamzeh ali jamali environmental health engineering, health faculty, qazvin university of medical science, qazvin, iran

background: application of potassium ferrate is a chemical oxidation approach used for water and wastewater treatment. the aim of this study is to apply central composite design (ccd) and response surface methodology (rsm) to optimize potassium ferrate consumption in the treatment of wastewater from carpet industries. methods: samples in this experimental study were collected from wastewater, o...

Journal: :Journal of hazardous materials 2007
J Q Jiang

The aim of this paper is to review the research progress of using ferrate(VI) in following fields of environmental remediation: (1) water disinfection; (2) degradation of synthetic organic pollutants; (3) treatment of emerging organic pollutants; (4) oxidation of inorganic pollutants; (5) removing humic substance; (6) wastewater treatment and disinfection; and (7) sewage sludge treatment. Whils...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2007
C Li X Z Li

In this study, the degradation of bisphenol A in aqueous suspension by interaction of photocatalytic oxidation and ferrate(VI) oxidation was investigated under different conditions. The results indicate that the formation of Fe(V) and Fe(IV) is in the photocatalytic reduction of Fe(VI) by electron (ecb-) on the surface of TiO2. The oxidation efficiency of the photocatalytic oxidation in the pre...

Journal: :iranian journal of public health 0
f. vaezi a. mesdaghinia h. jamani

potassium ferrate has been used as a multi-purpose chemical in treatment of wastewaters. with the formula of k2fe04 it has 3 excellent characters for water treatment, so by using it alone, it would be possible to confine all reactivity, it is essential to prepare ferrate at the point of use. in this study, k2fe04 was synthesized, then it has been employed for chlorine gas with an alkaline solut...

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