Naslov
Ispitivanje kore naranče i limuna kao biosorbensa za uklanjanje metilenskog modrila
(Evaluation of orange and lemon peels as biosorbens for removal of methylene blue)

Autori
Kučić, Dajana ; Rožić, Mirela ; Senji, Ira

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

Izvornik
XXII. hrvatski skup kemičara i kemijskih inženjera / Tomašić, Vesna ; Maduna Valkaj, Karolina - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2011, 240-240

ISBN
978-953-6894-42-0

Skup
XXII. hrvatski skup kemičara i kemijskih inženjera

Mjesto i datum
Zagreb, Hrvatska, 13.02.2011. - 16.02.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
sintetska bojila ; metilensko modrilo ; kore naranče i limuna ; obrada otpadnih voda ; sorpcija
(synthetic dyestuffs ; methylene blue ; orange and lemon peels ; wastewater treatment ; sorption)

Sažetak
Removal of synthetic dyestuffs from aqueous solution is necessary because of the frequent appearance of these dyestuffs in wastewaters generated from textile and other industries. The presence of dyes in water is undesirable since even a very small amount of these coloring agents is highly visible and may be toxic to the aquatic environment. Therefore, removal of dyes is an important aspect of wastewater treatment before discharge [1]. The present study explores the ability of orange and lemon peels to remove dye from aqueous solutions. Batch studies were carried out on a laboratory scale to evaluate the adsorption capacity of orange and lemon peels. Sorption isotherm of methylene blue (MB) on the orange and lemon peel was determinated at 250C with the initial concentratons of MB in the range 25-125mg/L. Equlibrium data were fitted to the Langmuir and Freundlich isotherm models and equlibrium was reached within 24 hours. The effects of solution pH, preparation of the sorbent (effects of hydrogen peroxide and drying (80 and 1100C)) and a role of microorganisms which have capacity to reduce MB in wastewater were also studied. Microbal decolorization processes offer a complete cleanup of pollutants in a natural way as it reduces the color components to carbon dioxide, ammonia and water by initiating cleavage of the bonds in the dyes rather than creating possible toxic fragments of dyes[2]. At pH 2.0 the sorption of dye was not favorable, while the sorption at other pHs (4-10) was remarkable. Also, it was carried out the determination of carboxylic acid groups in cellulosic fibers. The method which were used is based on hydrogen ion exchange. In principle, the total ion exchange capacity of the fibers, equivalent to the total number of carboxylic acid groups, is mesured [3]. The mesures were carried out on TOC, colorimeter and FTIR. The result showed that orange nad lemon peel was a promising for the removal of MB from aqueous solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Grafička tehnologija

POVEZANOST RADA