Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1855
Title: Mineral precipitates from mine water as adsorbents -Part I- Site-specific characterization of natural deposits
Authors: Dinu, Laurentiu Razvan 
Badescu, Valeriu 
Vasile, Gabriela 
Cristea, Ionut 
Marin, Nicoleta Mirela 
Serban, Ecaterina Anca 
Affiliations: National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
National Research and Development Institute for Industrial Ecology, ECOIND 
Keywords: Mine water;Schwertmannite;Arsenic adsorption
Issue Date: Jun-2022
Publisher: Romanian Journal of Ecology & Environmental Chemistry
Abstract: 
Secondary minerals, and mixtures of Fe-Al compounds such as oxohydroxy and hydroxosulfates can be naturally generated from mine water in response to oxidation /bio-oxidation, mixing, evaporation and neutralization processes. Deposits observed in significant quantities, with very high iron content, from the mining perimeters of Certej-Coranda, Rosia Montana, and Boita Hateg were sampled and characterized. Schwertmannite and Goethite can function as adsorbents after drying or further processing. In both cases, the chemical analysis of the product is important in order to promote it to potential users. A preliminary evaluation of the adsorption capacity for As(III) was performed for the original material and for products obtained after calcination. Depending on calcination temperature, adsorption capacity decreases, and a leveling effect can be observed, most probably due to pore sinterizing and transformation to hematite, irrespective of the initial mineral.
Description: 
Romanian Journal of Ecology & Environmental Chemistry, vol. 4, no. 1, 2022, 38-44, https://doi.org/10.21698/rjeec.2022.104
URI: http://hdl.handle.net/123456789/1855
Appears in Collections:RJEEC, Volume 4, no.1, 2022

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