نتایج جستجو برای: absorption isotherm

تعداد نتایج: 137675  

Journal: :Biophysical journal 2004
A Halperin A Buhot E B Zhulina

Competitive hybridization, at the surface and in the bulk, lowers the sensitivity of DNA chips. Competitive surface hybridization occurs when different targets can hybridize with the same probe. Competitive bulk hybridization takes place when the targets can hybridize with free complementary chains in the solution. The effects of competitive hybridization on the thermodynamically attainable per...

Journal: :Journal of hazardous materials 2008
Y N Mata M L Blázquez A Ballester F González J A Muñoz

The recovery of cadmium, lead and copper with the brown alga Fucus vesiculosus was characterized and quantified. The biosorption data fitted the pseudo-second order and Langmuir isotherm models, but did not adjust to the intraparticle diffusion model. The metal uptakes deduced from the pseudo-second order kinetic model and the Langmuir isotherm model followed a similar sequence: Cu>Cd approxima...

2008
Guangliang Liu Yun Qian Shugui Dai Nan Feng

The occurrence of microcystins (MC) during aquatic blooms of cyanobacteria in eutrophicated freshwater body has increasingly become an environmental and health concern worldwide. An experimental study was conducted to investigate the adsorption of two common variants of microcystins, MCLR and MCLW, onto SPM at different pH values. The results showed that most microcystins spiked into an SPM sol...

Abstract     Background: Wastewater from factories and manufacturing centers because of various compounds, complicates the process of wastewater treatment. Among this industries, the textile, paper pulp, food, pharmacy and leather industry due to consumption of various types of chemicals are the most important importers of color pollutants to environment, which have harmful effects...

Journal: :international journal of environmental research 0
b. subramanyam school of civil engineering, sastra university, thanjavur-613402, tamil nadu, india d. ashutosh director, centre for environmental engineering, prist university, tamil nadu, india

liquid-phases adsorption equilibrium of phenol onto two naturally available soils namely kalathur soil (kr) and adhanur soil (ar) were studied. the experimental data were analyzed using fourteen isotherm models, ranging from single-parametric model to multi-parametric models (up to 5 parameters) of the system. results show that in general the accuracy of models to fit experimental data improves...

ژورنال: طلوع بهداشت یزد 2016
الماسی, علی, سلطانیان, سپیده, سلطانیان, محمد, شرفی, کیومرث, مرادی, مسعود, پیر صاحب, مقداد,

Introduction: Azo groups of dyes used widely for coloring yarn. Methylene blue is one of this group's dyes therefore with benzene rings in its structure caused the toxicity and its persistence in the environment. So that the its deficiency of proper treatment can cause the irreparable damage to the environment. One of the ways to removal these dyes from natural sources are absorbed by the absor...

Background and Objectives: Heavy metals are the most common contaminants in industrial wastewater. Cadmium is important due to its toxicity and harmful effects on human beings. The aim of this study was to evaluate the removal of cadmium from aqueous solutions by nickel ferrite-titanium oxide nanocomposite. Materials and Methods: This experimental – laboratory study was carried out in a ...

Journal: :Journal of Physics: Conference Series 2021

Abstract This Study aims to determine the adsorption process of Cu (II) metal by cassava peel waste ( Manihot esculenta crantz ) meeting Langmuir equation and Freundlich. Research method made into activated carbon, then mass, pH optimum contact time. Then determination maximum capacity was carried out testing with isotherm Freundlich equations. The results showed that best conditions (optimal c...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
abdolmajid gholizadeh mitra gholami asghar ebrahimi mohammad miri ali nikoonahad

introduction: the powdered activated carbon treatment (pact) has been proposed as an alternative in wastewater treatment and wastewater biomass protection against toxic substances. this study aims to evaluate pact performance in treating dyes, acid orange, and remazol brilliant reactive blue. methods: this empirical- applied research was carried out in pilot scale in which different dye removal...

Hashemi, Sohaila sadat, Rabiei, Negin,

One of the applicable methods to control the pollution of heavy metals is the use of an adsorbent mineral. The aim of this research is to investigate the effect of Nickel and Zinc elements on microstructure properties of sepiolite and vermiculite clay minerals. To address the absorption experiment studies, four treatments (vermiculite, vermiculite + sand soil, sepiolite and sepiolite + sand soi...

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