Room: King Willem Alexander
Date: Wednesday, 20 May 2026
Time: 16:15 - 17:15 CEST
Session code 1BO.10
Advanced processes for waste and residue conversion into sustainable fuels and materials
Exploring the Use of Iron-rich Mining Waste as a Sorbent for Hydrogen Sulfide (H2S), Volatile Organic Compounds (VOC) and Nitrogen Oxides (NOx) Abatement in Gaseous Effluents
Short Introductive summary
Mineral extractive industry leads to a high environmental impact due to soil extraction technologies and the generation of large amounts of solid waste. These residues are cheap, non-toxic and a sustainable alternative to noble catalytic metals used in thermochemical processes or gas cleaning, such as cobalt or nickel. This study aims to characterize iron-rich mining waste and to evaluate the viability of the non-modified material in catalytic NO reduction, as well as H2S and VOC adsorption. 3 lateritic minerals (L1, L2, L3) obtained from open-pit mines (Cuba) and 3 leaching residues (C1, C2, C3) derived from the CARON process were studied. All samples were successfully tested without modification in H2S and VOC adsorption from biogas, as well as for NO abatement at 500°C. While good performances were achieved for H2S removal (50 to 79%) from a humid synthetic biogas, moisture seems to promote competition with VOC adsorption, lowering removal efficiency. DeNOx was mainly operated by adsorption, due to the presence of iron oxides, and lead to acceptable removal efficiencies (up to 17%).
Presenter
María GONZÁLEZ MARTÍNEZ
IMT Mines Albi, FRANCE
Presenter's biography
Assistant professor in RAPSODEE, IMT Mines Albi (France, 2019), PhD in Environmental Chemical Engineering (2018). Research focuses on the production, characterization and use of biosourced catalysts and adsorbents for environmental applications in thermochemical conversion and effluents remediation.
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
R. Pele, IMT Mines Albi, FRANCE
H. Benbelkacem, DEEP, INSA Lyon, FRANCE
S. Giraudet, ISCR, ENSCR, Rennes, FRANCE
A. Couvert, ISCR, ENSCR, Rennes, FRANCE
M. Gonzalez Martinez, RAPSODEE, IMT Mines, Albi, FRANCE
Session reference: 1BO.10.2