Experimental investigation and thermodynamic modeling of extraction of heavy metal ions from aqueous solutions by chelation in supercritical carbon dioxide /
a strong need for developing cost effective and
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | a strong need for developing cost effective and agents have been tested to find the most appropriate one for also capable of calculating the concentrations of chemical an Atomic Absorption Analyzer and a Gas Chromatograph have and viable technique for the remediation of metal ions in application can be accurately estimated. The results of this aqueous phase, the residual solvent must be removed from the been chosen as the model contaminant as it is frequently been employed. Copper ions have been successfully extracted copper. Analytical methods have been developed to quantify easily removed, this process has two major disadvantages. environmentally friendly metal removal technologies. Solvent equilibria and the thirteen reactions taking place in the extraction has been recognized as one of the best methods for extraction through chelation in supercritical CO2. Copper has First, the solvent/metal solution must be subsequently fluids. The main objective of this research has been to found in industrial waste streams. Different chelating friendly and economically feasible for wide spread industrial industry. To prevent the contamination of clean water investigate the potential and feasibility of heavy metal ion metal concentrations of industrial waste water. This creates of metal extraction units. With the model the efficiency of predicts the system pH which is a important factor in design purified. Second, since the solvent may be miscible in the removing metals from wastewater. Although the metals are sources, the Clean Water Act specifies limits on the heavy species present in the system. This study proposed a novel study demonstrate that this process is both environmentally substituting conventional organic solvents with supercritical supercritical and aqueous phase compositions. Specifically, system, a thermodynamic model has been developed. This model temperatures and pressures is easily estimated. The model is the efficiency of this process for a specific industrial the extraction with different chelating agents at different up to 97% on different isotherms. Considering the phase use. waste water streams. In conjunction with the developed model Wastewater streams containing heavy metals are common in water stream. These disadvantages can be eliminated by |
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| Item Description: | "Major subject: Chemical Engineering". Vita. |
| Physical Description: | x, 78 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |