نتایج جستجو برای: initial concentrations of ions in aqueous solution

تعداد نتایج: 24464686  

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...

2013
S Arivoli V Marimuthu A. Peter Pascal T. Prabaharan

The series of batch laboratory experiment were carried out by using Acid Activated Ipomoea Carnea (AAIC) for the removal of copper (II) ions from aqueous solution by the adsorption process. The investigation was carried out by studying the influence of initial pH, contact time, adsorbent dosage and initial concentration of copper. All batch experiment was carried out of constant temperature usi...

Journal: interface and thin films 2018

The adsorption ability of Dowex Optipore L493 resin modified with Aliquat 336 (MR), activated carbon modified with Aliquat 336 (MAC) and sawdust modified with Aliquat 336 (MS) for removal of Cr(VI) from aqueous solution in batch system was investigated. The effects of operational parameters such as adsorbent dosage, initial concentration of Cr(VI) ions, pH, temperature and contact time were stu...

Mahmood Alimohammadi, Masoomeh Askari Mohammad Hadi Dehghani Mohammad Mahdi Emamjomeh Shahrokh Nazmara

Natural organic matter (NOM) affects some qualitative parameters of water such as color. In addition, it can deteriorate the performance of water treatment process including coagulation, adsorption, and membranes. NOM also reacts with chlorine in the chlorination process and may form disinfection by-products. The present study was carried out in laboratory-scale in a batch system using a cylind...

2005
Zhen Zhang Guang-Ming Zeng Jin-Hui Huang Yao-Yao Fang Ke Xu Yun-Huan Qu Chun-Ping Yang Jian-Bing Li

Micellar-enhanced ultrafiltration (MEUF) of zinc ions (Zn2+) from aqueous solutions using single anionic surfactant sodium dodecyl sulphate (SDS) at low critical micelle concentrations (cmc) (0.2×cmc – 3×cmc) was investigated. When the initial SDS concentration was below the cmc, unexpectedly high rejection (97.5%) was obtained due to concentration polarisation occurring near the membrane-solut...

Javad Hosseini, Reza Moradi,

Background & Aims of the Study: Phenolic compounds have been extensively used in industries for applications such as petrochemical, oil refineries, papers, plastics, steel, pharmaceuticals, textiles, coal conversion, and so on. Specified amounts of Phenolic compounds are lost in the process of their manufacturing and utilization and often cause environmental pollution problems....

Journal: :آب و خاک 0
فریده زارع پور محسن حمیدپور حسین شیرانی محمد حشمتی جواد حسینی فرد

introduction: boron is one of the eight essential micronutrients required for plant growth and development. the optimal concentration range (between deficiency and phytotoxicity) for boron is narrower than for other plant essential nutrients. generally, irrigating water containing concentrations of b greater than 1 mg l-1 would be detrimental for most plants. although, there are a large number ...

پایان نامه :موسسه آموزش عالی غیردولتی رودکی تنکابن - دانشکده ادبیات و علوم انسانی 1394

this study was conducted to investigate the effect of favorite-text on iranian intermediate efl learners’ vocabulary development. sixty learners from nour-al-mahdi english institute participated in the present study. having been homogenized by oxford placement test (opt), they were randomly assigned into two groups of 30, control and experimental. then both groups sat for a pre-test which was a...

M. Mojarad Farimani R. Dabiri

Contamination of water resources with toxic elements is one of the challenges of thetoday's world. In this research, application of Goethite nanoparticles in removingcontamination of arsenic and mercury from synthetic wastewater in a batch mode isinvestigated. For this purpose, the effect of different factors including pH, adsorbent dosage,contac...

2013
S Vijay Kumar R Narayanaswamy M Sripathy

The present work was focused on investigation of effect of solution concentration, contact time and pH variation on ability of the eucalyptus, neem and mango leaves in removing chromium ions form aqueous solution. The dried leaves were washed with deionised water, air-dried and ground using ball mill then sieved. The leaf powder was added to 1M stock metal ion solution made from potassium dichr...

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