نتایج جستجو برای: initial adsorbent in 5

تعداد نتایج: 17233672  

Journal: :محیط شناسی 0
سعید اسکندری دانشجوی دکتری مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران علی ترابیان استاد گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران غلامرضا نبی بید هندی استاد گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران مجید بغدادی استادیار گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران بهنوش امین زاده استادیار گروه مهندسی محیط زیست، دانشکدۀ محیط زیست دانشگاه تهران

introduction conventional water treatment consist of unit processes include coagulation, flocculation, clarification, filtration and disinfection that goal is removal of turbidity, color and certain bacterial species. in filtration process flocculated substances that have not removed in pervious stage are sediment. filter media is often silica sand that removal mechanism is complex and consists...

Journal: :journal of chemical health risks 0
z. alishavandi graduate student, department of chemistry, firozabad branch, islamic azad university, firozabad, iran n. mosallanejad department of chemistry, mashhad branch, pn university, khorasan, iran r. shabani department of chemistry, firozabad branch, islamic azad university, firozabad, iran

in this study, a new adsorbent, silver nanoparticle loaded on activated carbon (ag˗np˗ac) was used for removal of acid yellow199 (ay 199) dye. this novel material was characterized and identified by different techniques such as brunauer, emmett and teller (bet), field emission scanning electron microscopy (fesem), x-ray diffraction (xrd) analysis. unique properties of this adsorbent such as hig...

Journal: :journal of physical and theoretical chemistry 0
zohreh khoshraftar science and research branch, islamic azad university, tehran, iran ali shamel department of chemistry, ardabil branch, islamic azad university, ardabil, iran.

pollution of water resources by various pollutants is nowadays a global environmental issue. among the different type of water pollutants, dye represents a major polluting group. in this study, azolla filiculides roots have been used for adsorption of malachite green (mg), a cationic dyed from aqueous solution. in this study, effects of operating parameters such as initial concentration of dye ...

Mesoporous pellet adsorbent developed from mixing at an appropriate ratio of natural clay, iron oxide, iron powder, and rice bran was used to investigate the optimization process of batch adsorption parameters for treating aqueous solution coexisting with arsenate and arsenite. Central composite design under response surface methodology was applied for optimizing and observing both individual a...

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 ...

Journal: :iranian journal of health sciences 0
a zarei e bazrafshan 2- health promotion research center, zahedan university of medical sciences, zahedan, iran r khaksefidi 1- student scientific research center of zahedan university of medical sciences, zahedan, iran m alizadeh 1- student scientific research center of zahedan university of medical sciences, zahedan, iran

background and purpose: phenol is one of prevalent contaminants found in many industrial wastewaters. the combination with special features, such as high toxicity, carcinogenic properties, vitality gathering ability, low biodegradation potentiality and others, based on the u.s environmental protection agency, classified as a priority pollutant. the purpose of this study was to determine the eff...

ژورنال: سلامت و محیط زیست 2018

Background and Objective: Excessive consumption of antibiotics and the entrance of the potentially hazardous substances to the environment has become one of the environmental concerns. Today, adsorption is one of the efficient and reliable methods for the removal of this class of compounds. The aim of this study was to synthesize chitosan-Fe3O4 and to compare the efficacy of removing erythromyc...

Journal: :jundishapur journal of health sciences 0
mohammad taghi ghaneian department of environmental health engineering, shahid sadoughi university of medical sciences, yazd, ir iran mahboubeh dehvari department of environmental health engineering, shahid sadoughi university of medical sciences, yazd, ir iran mahmoud taghavi department of environmental health engineering, mazandaran university of medical science, sari, ir iran mohsen amrollahi behzad jamshidi department of environmental health engineering, shahid sadoughi university of medical sciences, yazd, ir iran

industrial effluents, especially the textile industry are discussed as one of the fundamental problems of the environment .dyes are materials with complex structures that enter into the wastewater from different stages of the textile industry. colors are often toxic, carcinogenic and mutagenic. this study investigated the absorption efficiency of reactive red 198 dye from aqueous solutions by p...

Background and Aim: Hexavalent chromium is a heavy metal with harmful effects on surface and ground water. Its removal from contaminated water and waste water has received great interest in recent years. This study aimed to evaluate the absorption of hexavalent chromium from aquatic environments using functionalized carbon produced from rice husk as an inexpensive and biological adsorbent. Mat...

ژورنال: طلوع بهداشت یزد 2014
ابراهیمی, اصغر, احرام پوش, محمد حسن, زارعی, سلمان, سلمانی, محمد حسین, صفدری, مهدی, عسکری شاهی, محسن,

Introduction: Cadmium is a heavy metal with high toxicity and is best known as a carcinogen element. For protecting human health and environment it is necessary to remove excess Cadmium from industrial wastewater before discharging it to surface and ground water. In this study the efficiency of Zinc Oxides Nanoparticles in Cadmium removal from aqueous solution was evaluated. Methods: This is a...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید