Document Detail


Linz-Donawitz steel slag for the removal of hydrogen sulfide at room temperature.
MedLine Citation:
PMID:  22823418     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Slags collected from the blast oxygen furnaces of two Linz-Donawitz steel making plants have been tested as adsorbents for H2S removal at room temperature (298 K). Two different particle size fractions, namely < 212 and 212-500 µm, were selected from the original slag samples for the adsorption tests. Dynamic tests were carried out using a column-bed configuration and retention capacities were calculated after bed exhaustion. Retention capacities as high as 180 mg of H2S g-1 of slag were attained, in spite of the very low specific surface area of the steel slags. As expected, humidity played a crucial role in the removal of H2S. Particle size had also an important effect on the capacity of the adsorption beds. Analysis of the exhausted slags revealed considerable amounts of elemental sulfur on the surface of the particles. Sulfates were also found on the exhausted slags, especially on the 212-500 µm size fractions. The characterization of the slags prior and after the H2S adsorption experiments allowed us to postulate plausible mechanisms to understand the outstanding capacity of these steel by-products for H2S adsorption.
Authors:
Miguel A Montes-Moran; Alejandro Concheso; Carla Canals-Batlle; Noelia V Aguirre; Conchi O Ania; Maria Martín; Victoria Masaguer
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-23
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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