نتایج جستجو برای: valent iron nanoparticles application on a natural zeolite media

تعداد نتایج: 16271798  

Journal: :محیط شناسی 0
روح اله رستمی کارشناس ارشد مهندسی بهداشت محیط دانشکده بهداشت، دانشگاه علوم پزشکی سمنان احمد جنیدی جعفری دانشیار گروه مهندسی بهداشت محیط دانشگاه علوم پزشکی ایران

volatile organic compounds (vocs) are in categories of mankind and environmentally harmful materials. some of vocs are also carcinogenic and mutagen. because of expanded application of these compounds as various domestic and industrial usages, prevention of environmental contamination of these compounds is a substantial issue.  in this study, the effect of zero-valent iron nanoparticles applica...

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, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1392

a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...

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 ...

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...

Journal: :jundishapur journal of health sciences 0
roohollah shiralipour chemistry department, college of science, shahid chamran university, ahvaz, ir iran; chemistry department, college of science, shahid chamran university, ahvaz, ir iran. tel: +98-6133360018, fax: +98-6133337009 behrooz zargar chemistry department, college of science, shahid chamran university, ahvaz, ir iran hooshang parham chemistry department, college of science, shahid chamran university, ahvaz, ir iran

conclusions briefly, the current study represents a novel method to eliminate temephos as an organophosphate compound from water samples with modified zero-valent iron nanoparticles. background temephos is an organophosphate pesticide used as larvicide in the environment. although not extremely hazardous, it can be risky for human health in the moderate concentrations. objectives this study inv...

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 ...

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...

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