Naslov
Removal of manganese from water using industrial seafood processing waste

Autori
Nuić, Ivona ; Vrca, Irena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the 4th International Conference of Scientists, Professionals, and Students on the Topic of Environmental Protection in the Republic of Croatia / Sedlar, Jelena ; Alešković, Luka Marijan ; Nižić, Katarina ; Ćorić, Mislav - Split : Kemijsko-tehnološki fakultet u Splitu, 2023, 28-28

ISBN
978-953-7803-20-9

Skup
4th International Conference of Scientists, Professionals, and Students on the Topic of Environmental Protection in the Republic of Croatia

Mjesto i datum
Split, Hrvatska, 20.04.2023. - 21.04.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
manganese, cost-effective water treatment methods, industrial seafood processing waste

Sažetak
Manganese (Mn) occurs naturally in aquatic ecosystems, as it is one of the most abundant metals in more than 100 minerals in the Earth’s crust. Higher levels of manganese in water intended for human consumption are a health concern and are usually the result of industrial activities and mining, especially when manganese is the fourth most mined metal in the world. Its presence in water for industrial purposes causes both aesthetic and operational problems [1]. Therefore, maintaining a low concentration of manganese both in aquatic ecosystems and industrial effluents is of great importance. The treatment options for manganese removal are quite broad. As always, in addition to the removal efficiency, the cost of the applied methods should not be overlooked. Thus, in this paper, a multi- stage treatment involving several economically viable methods for manganese removal from an aqueous solution containing 28 mg Mn/L was carried out: aeration, neutralization with milk lime followed by chemical precipitation and finally sorption using industrial seafood processing waste. An excellent overall removal efficiency of 90.5% was obtained, with a residual manganese concentration of 2.66 mg/L, which meets the criteria (4 mg Mn/L) for effluent emission into the public sewage system [2]. In order to achieve the standard for surface water (2 mg Mn/L) or water for human consumption (0.05 mg Mn/L), it is necessary to carry out additional treatment [2, 3]. Ultimately, the utilization of waste materials contributes to lower water treatment costs and sustainable waste management.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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