نتایج جستجو برای: Selective separation

تعداد نتایج: 318588  

Journal: :analytical and bioanalytical chemistry research 0
zahra kaboli tanha university of zanjan, zanjan, iran mahdieh koorepazan moftakhar university of zanjan, zanjan, iran mohammad reza yaftian university of zanjan, zanjan, iran nader noshiranzadeh university of zanjan, zanjan, iran

oxime extractants 3-tert-butyl-2-hydroxy-5-methyl benzaldehyde oxime (hl1) and 3-tert-butyl-2-hydroxy-5-methoxy benzaldehyde oxime (hl2) were synthesized and characterized by conventional spectroscopic methods. suitable lipophilic nature of the prepared extractants allowed examining the ability of these molecules for extraction-separation of copper from its mixture with normally associated meta...

پایان نامه :0 1370

all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1993
mohammad chalkosh amiri daryoosh jalali

whey contains more than half of total solids present in the original milk, which includes 20% of the proteins, most of the lactose, minerals and water soluble vitamins. in this study, selective separation of whey components by aphron flotation (separation of ultrafine particles by micro-bubbles) has been investigated. it has been shown that it is possible to recover valuable components of whey ...

Journal: :analytical and bioanalytical chemistry research 2015
hossein soltani mohammad reza yaftian abbasali zamani massomeh ghorbanloo

a new carboxylic acid extractant, named 2-(dibutylcarbamoyl)benzoic acid, is prepared and its potential for selective solvent extraction and recovery of lead ions from industrial samples was investigated. the slope analysis indicated that the lead ions are extracted by formation of 1:2 metal to ligand complexes. the effect of the parameters influencing the extraction efficiency including kind o...

2015
Wai Man Szeto Kin Hong Wong

Here we propose a score-informed monaural source separation system to extract every tone from a mixture of piano tone signals. Two sinusoidal models in our earlier work are employed in the above-mentioned system to represent piano tones: the General Model and the Piano Model. The General Model, a variant of sinusoidal modeling, can represent a single tone with high modeling quality, yet it fail...

Daryoosh Jalali Mohammad Chalkosh Amiri,

Whey contains more than half of total solids present in the original milk, which includes 20% of the proteins, most of the lactose, minerals and water soluble vitamins. In this study, selective separation of whey components by Aphron flotation (separation of ultrafine particles by micro-bubbles) has been investigated. It has been shown that it is possible to recover valuable components of w...

Journal: :Green Chemistry 2023

An integrated extraction–separation process: extraction and selective separation of chlorophylls betalains using thermoreversible aqueous biphasic systems.

Journal: :KONA Powder and Particle Journal 1993

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