نتایج جستجو برای: isotherm models

تعداد نتایج: 912091  

Journal: :jundishapur journal of health sciences 0
seyyed javad jaafari department of environmental health engineering, school of health, hamadan university of medical science, hamadan, ir iran reza shokouhi department of environmental health engineering, school of health, hamadan university of medical science, hamadan, ir iran edris hossein zadeh department of environmental health engineering, school of health, lorestan university of medical science,khorramabad, ir iran mahmoud taghavi department of environmental health engineering, mazandaran university of medical science, sari, ir iran rasoul arezoumandi department of environmental health engineering, school of health, hamadan university of medical science, hamadan, ir iran rasoul arezoumandi department of environmental health engineering, school of health, hamadan university of medical science, hamadan, ir iran

industrial wastewater included the dyes one of the important sources of environmental pollution that founded in loom wastewater which are harmful for human health and environment. therefore, the purpose of this research was investigated removal of rb5 dye from aqueous solution by using of adsorption onto activated red mud as an cheap adsorbent. this research was experimental- laboratorial study...

2009
A.R.P. Kingsly K. E. Ileleji

0308-8146/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.foodchem.2009.03.050 * Corresponding author. Tel.: +1 765 494 1198; fax E-mail address: [email protected] (K.E. Ileleji). Corn distillers dried grains with solubles (DDGS) has high feed value due to its nutritive contents. The ratio of wet distillers grains (WDG) and condensed distillers solubles (CDS) added during the production ...

2015
Biswanath Dari Vimala D. Nair James Colee Willie G. Harris Rao Mylavarapu

Equilibrium models used for predicting phosphorus (P) loss from a site often use the Langmuir strength of P bonding, KL and the P sorption maximum, Smax, or the Freundlich adsorption coefficient, KF, obtained from traditional isotherms, as model input parameters. The overall objective of the study was to develop a protocol to allow estimation of isotherm parameters for soils using simple extrac...

2015
Melvin Samuel S Evy Alice Abigail M Ramalingam Chidambaram

Biosorption is a promising alternative method to replace the existing conventional technique for Cr(VI) removal from the industrial effluent. In the present experimental design, the removal of Cr(VI) from the aqueous solution was studied by Aspergillus niger MSR4 under different environmental conditions in the batch systems. The optimum conditions of biosorption were determined by investigating...

Journal: :Environmental science and pollution research international 2014
Annette Dathe Yuniati Zevi Brian K Richards Bin Gao J-Yves Parlange Tammo S Steenhuis

Spectral confocal microscope visualizations of microsphere movement in unsaturated porous media showed that attachment at the Air Water Solid (AWS) interface was an important retention mechanism. These visualizations can aid in resolving the functional form of retention rates of colloids at the AWS interface. In this study, soil adsorption isotherm equations were adapted by replacing the chemic...

ژورنال: سلامت و محیط زیست 2020

Background and Objective: Hexavalent chromium is reported to be highly toxic, mutagenic and carcinogenic; hence treatment of water and wastewater contaminated with this element by low-cost and environmentally friendly methods is of great importance. Therefore the aim of present study was to evaluate the efficiency of Fe(II) modified bentonite for hexavalent chromium removal from a simulated was...

Journal: :Circulation. Arrhythmia and electrophysiology 2011
Mark Wood Scott Goldberg Melissa Lau Aneesh Goel Daniel Alexander Frederick Han Shawn Feinstein

BACKGROUND The lethal isotherm for radiofrequency catheter ablation of cardiac myocardium is widely accepted to be 50°C, but this has not been directly measured. The purpose of this study was to directly measure the tissue temperature at the edge of radiofrequency lesions in real time using infrared thermal imaging. METHODS AND RESULTS Fifteen radiofrequency lesions of 6 to 240 seconds in dur...

Journal: :Journal of hazardous materials 2007
Oualid Hamdaoui Emmanuel Naffrechoux

The adsorption equilibrium isotherms of five phenolic compounds from aqueous solutions onto granular activated carbon (GAC) were studied and modeled. Phenol (Ph), 2-chlorophenol (2-CP), 4-chlorophenol (4-CP), 2,4-dichlorophenol (DCP), and 2,4,6-trichlorophenol (TCP) were chosen for the adsorption tests. To predict the adsorption isotherms and to determine the characteristic parameters for proce...

2007
M. T. Uddin M. S. Islam M. Z. Abedin

The potential of water hyacinth ash for phenol adsorption from aqueous solution was studied. Batch kinetic and isotherm studies were carried out under varying experimental conditions of contact time, phenol concentration, adsorbent dosage and pH. The adsorption of phenol decreased with increasing pH. The Freundlich and Langmuir adsorption models were used for the mathematical description of ads...

H. Rezaei H. Yousefi S. Rastgar

The surface adsorption of heavy metals in effluents with nanoparticles is today asuitable method for effluents treatment. In the present study, lignocellulose nano-fibers(LCNFs) were used as natural adsorbent for lead adsorption. The aim was to evaluate leadadsorption using adsorption isotherms, kinetics and thermodynamics. Fourier TransformInfrared Sp...

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