Research on the Valorization of Green Sludge Resulting from the Manufacture of Sodium Dichromate in Romania
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Traistă Camelia [1] ; Traistă Eugen [1]
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[1] Petrosani University, Romania
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- Localización: Global Challenges for a Sustainable Society: EURECA-PRO The European University for Responsible Consumption and Production / coord. por José Alberto Benítez Andrades, Paula García Llamas, Ángela Taboada Palomares, Laura Estévez Mauriz, Roberto Baelo Álvarez, 2023, ISBN 978-3-031-25839-8, págs. 493-501
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
The Târnăveni Chemical Plant was a inorganic chemical plant in Romania. In the good old days, even 6500 employees worked here. When it was productive, the Chemical Plant produced a lot of inorganic products such as: sodium bichromate, potassium bichromate, barium salts, chromium salts, or zinc oxide. In 2002, the plant was closed and taken over by AVAS. The sodium (potassium) dichromate manufacturing process results in a tailings called green slime. The tailings deposited in the landfill are strongly contaminated with dichromate ion, as a result of the process of manufacturing chromium salts. This ion, according to the statistics, is found in the material in a concentration of 1.73–2.20%. This concentration is enormous, taking into account the existing environmental protection regulations. The present paper presents the initial phase of research regarding the removing of this waste.
