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Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems
Published on: May 26, 2019
Removal of chromium from aqueous waste solution using liquid emulsion membrane
M A Hasan1, Y T Selim, K M Mohamed
1Department of Analytical Chemistry, Hot Laboratories Center, Atomic Energy Authority, Egypt. mamhasan2004@yahoo.com
Journal of Hazardous Materials
|April 18, 2009
Summary
This study recovers chromium (VI) using a liquid emulsion membrane (LEM) with Tri-octylphosphine oxide (TOPO) and sodium hydroxide. Key parameters like pH and carrier concentration were optimized for efficient Cr (VI) removal.
Area of Science:
- Environmental Chemistry
- Separation Science
Background:
- Chromium (VI) is a toxic heavy metal pollutant.
- Effective methods for Cr (VI) recovery from industrial wastewater are crucial.
Purpose of the Study:
- To investigate the recovery of chromium (VI) from dilute hydrochloric acid solutions.
- To optimize the liquid emulsion membrane (LEM) process for Cr (VI) removal.
Main Methods:
- Utilized a liquid emulsion membrane (LEM) system.
- Employed Tri-octylphosphine oxide (TOPO) as the carrier and sodium hydroxide as the stripping solution.
- Investigated parameters including hydrogen ion concentration, stirring speed, diluent type, carrier concentration, stripper concentration, and membrane composition.
Main Results:
- Systematically investigated and optimized critical parameters affecting Cr (VI) permeation.
- Evaluated the influence of surfactant type and concentration on LEM stability and performance.
- Demonstrated effective Cr (VI) recovery through the developed LEM process.
Conclusions:
- The developed liquid emulsion membrane (LEM) system with TOPO and NaOH is effective for Cr (VI) recovery.
- Optimization of process parameters significantly enhances Cr (VI) removal efficiency.
- This method offers a viable solution for treating Cr (VI) contaminated effluents.
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