نتایج جستجو برای: zero valent iron

تعداد نتایج: 292980  

In order to study the effect of zero-valent iron nanoparticles on morphological and physiological traits of canola (Brassica napus L. cv. 'Hayola 401') under salinity stress, a research was conducted under controlled conditions in factorial based on completely randomized design in three replicates. In the first phase, the zero-valent iron nanoparticles were synthesized and in the second phase, ...

Journal: :آب و خاک 0
شادی شفاعی امیر فتوت رضا خراسانی

iron (in zero-valent and oxide forms) is used to remove numerous organic and inorganic contaminants in environment. however, there are few reports, especially in nano scale, on the remediation of heavy metals contaminated soils using zero-valent iron in the literature. in this study, the effect of iron on the availability of heavy metals was evaluated in a calcareous soil spiked with cadmium, z...

Journal: :international journal of environmental research 2015
m. agarwal d. patel

manganese is one of the significant raw materials for various industries and most difficult element to remove from water because of its high solubility. the treatment of mn (ii) contained wastewater is stringent for environmental preservations. in the present study adsorption of mn2+ on zero-valent iron nanoparticles synthesized by chemical reduction process and modified with phosphate coating ...

ژورنال: سلامت و محیط زیست 2009
افخمی, عباس, رحمانی, علیرضا, صمدی, محمد تقی, نوروزی, رقیه,

Background and Objectives:Groundwater treatment by nano particles has received increasing interest in recent years. Chromium is a commonly identified contaminant in soils and groundwater. Zero-valent iron, as a natural reduction agent can be used in controlling of contaminated sites. The aim of this research is investigation of hexavalent chromium removal from aqueous solutions by using of iron...

ابراهیم زاده, محمد علی, اسلامی, شهرام, بی پروا, پوریا, عابدی راد, محمد,

Magnetic nanomaterials are making significant impact on improving the quality of human health that is tangible from a wide range of applications in various fields of medicine and biology. In recent years, nanoparticles successfully demonstrated outstanding applications due to having excellent magnetic properties of the iron oxide nanoparticles-based counterparts. Zero-valent iron nanoparticles ...

آذری, علی , اسرافیلی, علی , بابایی, علی‌اکبر , رضایی کلانتری, روشنک , مؤذن, مجتبی , کاکاوندی, بابک ,

Background and purpose: Nitrate is one of the most common chemical pollutants in groundwater in the world. Adsorption has been considered as an effective and efficient method of removing pollutants, particularly nitrate from aqueous solutions and so the aim of this study was to magnetization of the carbon nanotubes with zero-valent iron and using it as an adsorbent for the removal of nitrate fr...

ژورنال: سلامت و محیط زیست 2014
آذری, علی, احمدی, احسان, راستکاری, نوشین, رضایی کلانتری, روشنک, فاتحی, میثم, مختاری, مهدی, کاکاوندی, بابک,

Background and Objectives: Phenol is one of priority pollutants produced through leather, paint, resin, and pharmaceutical industries and it can contaminate groundwater after entering to the environment. Hence, it is necessary to use a suitable method for its removal. The aim of this study was synthesize and efficiency evaluation of magnetic nanocomposite of activated carbon powder-zero valent ...

2011
R. YUVAKKUMAR V. ELANGO V. RAJENDRAN N. KANNAN K. S. Rangasamy

In the present work, nano scaled zero valent irons (nZVI) were synthesized in ethanol medium by the method of ferric iron reduction using sodium borohydride as a reducing agent under atmospheric conditions. The obtained iron nanoparticles are mainly in zero valent oxidation state and remain without significant oxidation for weeks. A systematic characterization of nZVI was performed using UV, XR...

Journal: :jundishapur journal of health sciences 0
elham ahmadpour department of environmental engineering, sciences and research branch, islamic azad university, ahvaz, ir iran reza jalilzadeh yengejeh department of environmental engineering, ahvaz branch, islamic azad university, ahvaz, ir iran; department of environmental engineering, ahvaz branch, islamic azad university, ahvaz,ir iran. tel: +98-9124794322

results the results showed that the pcp degradation increased with an increase in zvi dosage from 0.056 to 1.4 g/l, an increase in persulfate concentration from 2.5 to 15.0 mm/l, and an increase in zvi to ps molar ratio from 0.1 to 2.5. the optimal initial ph for pcp removal was 5.0 and the maximum removal efficiency of 70% was achieved within 120 minutes. moreover, the zvi catalyst was reused ...

ژورنال: سلامت و محیط زیست 2012
اسرافیلی, علی, جنیدی جعفری, احمد, رضایی کلانتری, روشنک, محسنی بندپی, انوشیروان, نائیج, ام البنین,

MicrosoftInternetExplorer4 Background and Objectives: Nitrate is one of the most groundwater pollutants in world. Reduction of nitrate to nitrite by microorganisms cause serious health hazards. Nitrate can be eliminated using either adsorbtion or reduction. In this study, we investigated the adsorption of nitate on zeolite and the feasibility of removal improvement using supported  zero v...

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