Naslov
Utilization of Bauxite Slag for the Purification of Industrial Waste Waters

Autori
Oreščanin, Višnja ; Mikelić, Luka ; Lulić, Stipe ; Mikulić, Nenad ; Nađ, Karlo

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Izvornik
Proceedings of the 1st International Conference on Engineering for Waste Treatment-Beneficial use of waste and by-products / Ange Nzihou - Albi : Ecole des Mines d'Albi-Carmaux, 2005

ISBN
2-9511591-4-5

Skup
1stInternational Conference on Engineering for Waste Treatment-Beneficial use of waste and by-products

Mjesto i datum
Albi, Francuska, 17.05.2005. - 20.05.2005

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
red mud ; waste base ; wastewaters ; coagulant ; treatment plant

Sažetak
Production of the coagulant using bauxite waste (red mud and waste base) as raw material and results of testing of this new product in laboratory ("jar" tests) and field condition (pilot plant, full scale plant) were presented. Results shoved that red mud could be used as a cheap absorber for heavy metals removal from its own waste base and other industrial waste waters after partial dissolution with diluted sulphuric acid and neutralisation with the waste base. This coagulant is especially suitable for the treatment of wastewaters generated from pressure washing of boats in the marinas. The coagulant produced from the red mud has few advantages compared to the commercial Fe and Al salts: 1. Coagulation/flocculation process could be done in one step without coagulant aid or any other chemical addition, 2. pH measurement during the purification could be avoided because of the negligible pH variations of the treated solution, 3. allow one step removal of the cationic and anionic species from the wastewater, 4. one dose of coagulant is sufficient for five repeated cycles of heavy metals removal, 5. negligible leaching of the heavy metals from the waste mud under normal environmental conditions. 6. safe for the transport, storage and handling

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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