نتایج جستجو برای: dye concentration

تعداد نتایج: 416532  

Background and Objective: In recent years, wastewater textile treatment is of special importance due to the potential toxicity,cancer activity, and mutagens. The purpose of this study was evaluation of the removal of Remazol Black B (RBB) dyes from aqueous solution by chitosan. Materials and Methods: This laboratory study carried out on synthetic wastewater to assess the effect of factors su...

Titanium dioxide (TiO2) and Fe3O4 magnetite particles were coated on spherical Kissirises; glucose oxidase (GOx) enzyme was immobilized on Kissiris/Fe3O4/TiO2 by physical adsorption. This catalyst was analyzed by a scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and energy dispersive X-ray (EDX) measurements. The performance of the prepared biocatalyst in the...

L. Ghalamchi M. H. Rasoulifard N. Abbasioun

Present work investigates the capability of oxidative treatment process in the presence of nano silver doped on silicate particles for decolorization of a widely used azo dye, C.I. Direct Blue 129 (DB129) in water samples. Solutions with initial concentration of 20 mgL-1 of dye, within the range of generic concentration in textile wastewaters, were treated under ambient conditions of initial pH...

ژورنال: سلامت و محیط زیست 2009
رضائی, عباس, معصوم بیگی, حسین, نصیری, اکبر,

Backgrounds and Objectives: Textile industrial wastewaters are one of the important sources of environmental contaminants. In the recent years, use of advanced oxidation processes, by producing highly active and reactive components such as hydroxyl radicals has been proposed. The aim of this research is photocatalytic degradation of methylene blue dye using the ZnO-nanoparticle with UVA irradia...

Journal: :health scope 0
hossein kamani health promotion research center, zahedan university of medical sciences, zahedan, ir iran edris bazrafshan health promotion research center, zahedan university of medical sciences, zahedan, ir iran mohammad ghanbari ghozikali environmental health department of east azerbaijan province, health center, tabriz university of medical sciences, tabriz, ir iran majid askari department of material science and engineering, sharif university of technology, tehran, ir iran reza ameri department of environmental engineering, science and research branch, islamic azad university, tehran, ir iran; department of environmental engineering, science and research branch, islamic azad university, tehran, ir iran. tel: +98-2188968258, fax: +98-2166462267

conclusions the uv/zno system has been found an effective process with 90.2% cod removal and 95.6% dye removal after 50 minutes treatment. materials and methods in this work, zno catalyst and mercury lamp (uv-c, 254 nm) have been applied for removal of the c.i. sulphur red 14 dye from aqueous environments. the influence of various parameters such as the amount of zno, initial dye concentration,...

Journal: :progress in biological sciences 2014
sedigheh asad seyed mohammad mehdi dastgheib mohammad ali amoozegar

halophilic and halotolerant microorganisms are good candidates for decolorization of azo dyeswhich are routinely used in the dyeing process in textile industries. in this paper, theoptimization of biological decolorization of synthetic dye solutions containing remazol black bby the previously isolated halophilic bacterium halomonas sp. d2 is investigated. in a primaryinvestigation using a one-f...

Ahmad Fattahi, Davoud Ghadirian, Nasrin Homayonibezi, Pejman Amjadian, Reza Ali Fallahzadeh, Samaneh Mozaffary,

Introduction: Disposal of the wastewater produced in the paper and paperboard industry without the refining process can add substances to the environment, which are harmful to humans, environment, and other organisms. With regard to process efficiency, the current methods used in wastewater treatment of this industry are economically unjustifiable. Therefore, in this research, the electrolysis ...

Azam Pirkarami Kambiz Tahvildari Leila Fereidooni

The influence of the number of operating parameters on photocatalytic and sonocatalytic Acid Red 88 degradation from an aqueous solution was investigated in this paper. The experimental results indicated that the sonocatalytic process with Ni-TiO2 was far more effective for the degradation of high concentration azo dyes, regardless of the process condition. In order to achieve a larger surface ...

Journal: :Clinical chemistry 2004
Michael Pullmann Stefan Hergarten Norbert Laube

sodium oxalate without SDS) by varying the concentration of the dye (0.03 or 0.12 mmol/L), sodium oxalate (0 or 2 mmol/L), and SDS (25 or 100 mg/L) in all combinations. For protein assays, we mixed 20 ␮L of sample, calibrator, or water (blank) with 1 mL of PRM reagent and measured the absorbance at 600 nm after 30 min against the blank. The effects of the aminoglycosides on the absorbance readi...

Journal: :Bioresource technology 2013
Abuzer Çelekli Hüseyin Bozkurt Faruk Geyik

Artificial neural network (ANN), pseudo second-order kinetic, and gene expression programming (GEP) models were constructed to predict removal efficiency of Lanaset Red G (LR G) using lentil straw (LS) based on 1152 experimental sets. The sorption process was dependent on adsorbent particle size, pH, initial dye concentration, and contact time. These variables were used as input to construct a ...

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