Effect of Reaction Temperature on Schwertmannite Synthesis from Simulated Copper Heap Leach Solutions
Journal Title: BEST : International Journal of Management, Information Technology and Engineering ( BEST : IJMITE ) - Year 2017, Vol 5, Issue 10
Abstract
The work here, examines the effects of the reaction temperatures (25°C and 65°C) and co-existing metal ions (Cu2+ and Fe2+) on schwertmannite, synthesized from the simulated copper heap leach solutions. It is observed that, schwertmannite can be synthesized at both 25°C and 65°C, from all the experimental conditions, excepting for the solution containing 100 mM Fe2+ at 65°C, as goethite is generated under these conditions. Schwertmannite products, synthesized at both temperatures have similar chemical compositions; however, they differ in surface characteristics. The specific surface area of the schwertmannite, synthesized at 65°C was much larger (147.4-176.9 m2 g-1) than the specific surface area of the schwertmannite, synthesized at 25°C (14.1-21.4 m2 g-1). The efficiency of As(V) removal from acidic aqueous solutions (pH 3-4), by the synthesized products were also investigated. The results showed that, the maximum As(V) sorption capacities of the schwertmannite, synthesized at 65°C was much higher (114-128 mg g-1) than the maximum sorption capacities of the schwertmannite synthesized at 25°C (17-23 mgg-1).
Authors and Affiliations
SENGPASITH HOUNGALOUNE, NAOKI HIROYOSHI, MAYUMI ITO
Keywords
Related Articles
- EP ID EP239848
- DOI -
- Views 99
- Downloads 0
Health, Safety and Environmental Management at Wa Magazine
Healthy labor force plays an important role in the social and economic development of a country. It is therefore vital to put in the necessary mechanisms for successful executions of safety management policies. The envir...
Physical Characterization and Stratification of Urban Landscape by Mapping Case: Mexicali, Baja California
The objective of this paper was to establish urban units, to study the landscape of Mexicali city and to define its physical characteristics. The method of mapping was utilized, to observe the territory using physical ur...
Population Model with Cross-Diffusion with Double Nonlinearity
Considering the parabolic system of the two quasi linear equations, of the reaction-diffusion problem, of Kolmogorov- Fisher type was for biological population. The two-dimensional case and localization of wave solutions...
Significance of Colour in Professional Uniforms with Reference to Air Lines
Colours are visually stimulating and are a very powerful communication tool, especially in the context of the workplace. Distinctive colours are used for uniforms in various professions like military, airlines, tourism,...
Impact on Advertisement of Consumer Preference for Jewellery Shop
The advertisement has become as integral part of today’s marketing scenario. In earlier times, the advertisement was not given as much emphasis as it is being given today. The Instituted of practitioners in advertising d...