WorldCat Identities

Galera Martínez, Marta

Works: 2 works in 3 publications in 2 languages and 4 library holdings
Roles: Author
Publication Timeline
Most widely held works by Marta Galera Martínez
Valorisation des résidus carbonatés industriels pour le traitement de sulfure d'hydrogène dans les effluents gazeux by Marta Galera Martinez( Book )

2 editions published in 2015 in French and held by 2 WorldCat member libraries worldwide

The purpose of this study to valorize solid wastes from the Solvay process for the production of sodium carbonate as reagents for the treatment of H2S in air at concentrations typically found in wastewater treatment plants (tens to hundreds of ppmv of H2S). Firstly, the reactivity of two residues was evaluated in a gas-liquid-solid reactor at laboratory scale (250 ml). This reactor operates semi-continuously (continuous passage of gas through a fixed volume of slurry). The influence of operating parameters including the solid content of the suspension, the concentration of H2S, the stirring speed and the volume of suspension was discussed. The kinetics, physicochemical processes as well as mechanism involved have been identified despite the complex reaction medium. Secondly, the H2S treatment was investigated at pilot scale using a bubble column with trays (170 L) which also operates in semi-continuous mode. The results of the parametric study obtained at laboratory scale were checked at pilot scale. Finally, the column was evaluated with a real gaseous effluent from a wastewater plant in Graulhet (Tarn, France) which contains up to 200 ppmv of H2S. In the presence of other gases as methane (0.4% vol.) and carbon dioxide (2.5% vol.), the system has proven to be effective for the selective elimination of H2S. A near total abatement (100%) was maintained for at least two weeks with only one batch of suspension. Stable and non-volatile sulfur compounds (sulfates, sulfites, thiosulfates) were formed as products of the process. This study demonstrates the competitiveness of the process in terms of cost-effectiveness for the treatment of H2S in ambient conditions. The results obtained also demonstrate the possibility of scaling-up the method to an industrial scale
Thermal behavior of apatitic calcium phosphates synthesized from calcium carbonate and orthophosphoric acid or potassium dihydrogen orthophosphate by Doan Pham Minh( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

Audience Level
Audience Level
  Kids General Special  
Audience level: 0.95 (from 0.92 for Valorisati ... to 0.97 for Thermal be ...)