نتایج جستجو برای: initial concentration

تعداد نتایج: 728830  

The present investigation describes the evaluation of feasibility of MWCNT-Fe3O4 nanocomposite toward adsorptive removal of Co(II) and Pb(II) from aqueous solution in batch mode. The Fe3O4–MWCNT hybrid was prepared using a simple one-pot strategy via in situ growth of Fe3O4 magnetic nanoparticles onto the surface of the MWCNT...

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...

ژورنال: طلوع بهداشت یزد 2013
احرامپوش, محمدحسن, امرالهی, محسن , جمشیدی, بهزاد , طباطبایی, معصومه , عسکر شاهی, محسن , قانعیان, محمدتقی ,

  Background: The heavy metals are the most important pollutants their concentration of which in the environment is increasing in connection with cities and industrials development. One of these metals is chromium which, in the trivalent and Hexavalent oxidation state, is used in industries such as electroplating, glass, ceramic, tannery and leather. Hexavalent Chromium has proven several healt...

Journal: :iranian journal of catalysis 0
solmaz aghdasi department of chemistry, tabriz branch, islamic azad university, p.o. box: 5157944533, tabriz, iran. mohammad shokri department of chemistry, tabriz branch, islamic azad university, p.o. box: 5157944533, tabriz, iran.

this study was aimed at investigating the photocatalytic degradation of ciprofloxacin (cip) antibiotic in aqueous solution using immobilized zno nanoparticles on glass plate. x-ray diffraction, atomic force microscopy, and scanning electron microscopy were applied to characterize the nanoparticles. to do so, the zno nanoparticles were synthesized through the chemical precipitation method and we...

Journal: :international journal of environmental research 2015
y. w. yao l. h. cui y. li n. c. yu h. s. dong

the electrocatalytic degradation of methyl orange (mo) on pbo2-tio2 nanocomposite electrodes was studied by cyclic voltammetry and bulk electrolysis. the results reveal that pbo2-tio2 nanocomposite electrodes possess higher oxygen evolution overpotential than pbo2 electrodes and the electrocatalytic degradation of mo on the electrodes is direct oxidation process. the influence of experimental p...

Journal: :iranian journal of neonatology 0
felix a. aisien department of chemical engineering, university of benin, benin city, edo nigeria amabogha blessing department of chemical engineering, university of benin, benin city, edo nigeria

photoreactor using solar radiation. the effect of various parameters such as ph, initial concentration of pollutant, catalyst dose, oxidant, and time variation were studied. the determination of the best catalyst was studied amongst the four catalysts (tio2, zno, psa and ssa) .the kinetics of degradation of isooctane was also studied. the results showed that tio2 was the best catalyst with a de...

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...

ژورنال: سلامت و محیط زیست 2011
برجسته عسکری, فاطمه, رحمانی, علیرضا, سلیمانی امین آباد, مهری, عسگری, قربان,

Backgrounds and Objectives: High level of nitrate ion in the water resources cause some health and environmental problems. The aim of this research is to study nitrate removal by Zero-Valent Magnesium (ZVM) and MgCl2-modified pumice from aqueous solutions.Materials and Methods: The pumice granules were modified by MgCl2 . The removal of nitrate was studied in a batch system. The pH, initial nit...

ژورنال: طلوع بهداشت یزد 2014
امام جمعه, مهدی, احرام پوش , محمد حسن , صفدری , مهدی , عسکری شاهی, محسن , قانعیان, محمد تقی ,

introduction: Nitrate ion in drinking water has been found to have a significant effect against health human. Nitrate is an acute toxic it can be reduced to nitrite in the stomach when it can lead to have blue baby diseases in infants. This research is directed towards to elucidate the nitrate removal efficiency by kernel ashes of olive in water supply. Methods: This experimental study was co...

بنیادی , ضیاالدین, شکوهی , رضا, محوی, امیرحسین,

Background and purpose: Cyanide is a species of high toxicity that is found mostly in industrial effluents such as electroplating, metal mining, metallurgy and metal cleaning processes. Entrance of it to existing environment contains a hazardous to health. The purpose of this study was to compare efficiency of both sonochemical and sonochemical / hydrogen peroxide processes for cyanide rem...

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