Naslov
Removal of nitrate by modified hazelnut shells and brewers' spent grain

Autori
Nujić, Marija ; Habuda-Stanić, Mirna

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

Izvornik
16th Ružička days "Today science - Tomorrow industry" / Jukić, Ante - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2016, 112-112

ISBN
978-953-7005-40-5

Skup
International conference 16th Ružička days "Today science - Tomorrow industry"

Mjesto i datum
Vukovar, Hrvatska, 21.09.2016. - 23.09.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nitrates; ion exchange; wastewater

Sažetak
Eutrophication is a serious environmental issue worldwide and is mostly caused by the nitrogen and phosphorus. These compounds can stimulate algae growth in most ecosystems, which is detrimental to aquatic life and water quality. In addition, high concentrations of nitrate in drinking water can cause serious health problems in humans. Therefore, the World Health Organization (WHO) stipulated nitrate concentration limit of 50 mg NO3-/L. There are several methods to remove nitrates from waters, such as reverse osmosis, electrodialysis, adsorption and ion-exchange. In the last decade, there has been a growing interest in ion exchangers prepared from agricultural residues. In this work modified hazelnut shell and brewers’ spent grain were investigated as potential sorbents for the removal of nitrate from wastewater generated from confectionary industry. Langmuir and Freundlich isotherm models were used to study the obtained equilibrium data. The maximum adsorption capacity of the modified hazelnut shell and brewers’ spent grain was obtained and the percentage of removal was determined. The results reported that these food industry by-products have the potential to be used as low-cost sorbents for nitrate removal from contaminated waters.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

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