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Modifikovani bentonit kao adsorbent i katalizator za prečišćavanje otpadnih voda koje sadrže boje

dc.creatorZunic, Marija J.
dc.creatorMilutinović-Nikolić, Aleksandra D.
dc.creatorJović-Jovičić, Nataša
dc.creatorBanković, Predrag
dc.creatorMojović, Zorica D.
dc.creatorManojlović, Dragan D.
dc.creatorJovanović, Dušan M.
dc.date.accessioned2018-11-22T00:16:37Z
dc.date.available2018-11-22T00:16:37Z
dc.date.issued2010
dc.identifier.issn0367-598X
dc.identifier.urihttp://cherry.chem.bg.ac.rs/handle/123456789/1093
dc.description.abstractModification and characterization of bentonite from location Bogovina, Serbia was performed in order to obtain material applicable in wastewater purification. The lt 75 mu m bentonite fraction was used in organobentonite synthesis while the lt 2 mu m bentonite fraction, obtained by hydroseparation was used in pillaring procedure. Organo-modification of bentonite was performed with (1-hexadecyl)trimethylammonium bromide (HDTMA-Br). Pillared bentonite was obtained using standard procedure. Al3+ and Fe3+ were incorporated in pillars in 4:1 ratio and applied as catalyst in catalytic wet peroxide oxidation. Differences in structure of starting and modified bentonites were established by XRD analysis and nitrogen physisorption on -196 degrees C. The (001) smectite peak around 2 theta = 6 degrees shifts during the modification process. The Na-exchange process lowered d(001) from 1.53 nm (2 theta = 5.78 degrees) for starting clay to 1.28 nm (2 theta = 6.92 degrees), but the clay retained its swelling properties. The pillaring process increased and fixed the basal spacing to 1.74 nm. Intercalation of HDTMA ions into smectite structure increased d(001) to 2.00 nm for organobentonite. Specific surface area, S-BET, was affected by particle size and type of modification. The samples with finer bentonite fraction had higher S-BET due to increased smectite content. Na-exchanged bentonite samples had higher S-BET value than starting clay samples of same granulation. Organomodification caused dramatic decrease in S-BET value, while the pillaring process lead to an increase of S-BET value. Adsorptive and catalytic purification of wastewaters containing dyes was tested using Acid Yellow 99 as a model dye. Na-exchanged bentonite had greater adsorption affinity for dye adsorption than raw bentonite owing to higher S-BET. By organomodification this affinity was enhanced more than 70 times due to transition of bentonite surface from hydrophilic to organophilic. Al,Fe pillared bentonite was proven to be efficient in catalytic wet peroxide oxidation of Acid Yellow 99 dye at room temperature.en
dc.description.abstractIzvršena je modifikacija i karakterizacija bentonita radi dobijanja materijala za prečišćavanje otpadnih voda. Organo-modifikacija bentonita izvedena je pomoću heksadeciltrimetilamonijum-bromida. Pilareni bentonit dobijen je standardnim postupkom uz ugradnju Al3+ i Fe3+ jona u odnosu 4:1, i korišćen je kao katalizator za oksidativnu razgradnju u prisustvu vodonik-peroksida. Razlike u strukturi polaznog i modifikovanih bentonita utvrđene su rendgeno-strukturnom analizom i fizisorpcijom azota na -196°C. Ispitivano je adsorpciono i katalitičko prečišćavanje otpadnih voda koje sadrže boje, korišćenjem Acid Yellow 99 kao model boje. Izvršeno je poređenje katalitičkih i adsorpiconih svojstava modifikovanih bentonita.sr
dc.publisherAssoc Chemists & Chemical Engineers Of Serbia, Belgrade
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142019/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/166001/RS//
dc.rightsopenAccess
dc.sourceHemijska industrija
dc.subjectOrganobentoniteen
dc.subjectPillared bentoniteen
dc.subjectPillared bentoniteen
dc.subjectadsorptionen
dc.subjectAdsorptionen
dc.subjectcatalytic wet peroxide oxidationen
dc.subjectCatalytic wet peroxide oxidationen
dc.subjectorganobentonitsr
dc.subjectPilareni bentonitsr
dc.subjectadsorpcijasr
dc.subjectkatalitička oksidacija u prisustvu H2O2sr
dc.titleModified Bentonite as Adsorbent and Catalyst for Purification of Wastewaters Containing Dyesen
dc.titleModifikovani bentonit kao adsorbent i katalizator za prečišćavanje otpadnih voda koje sadrže bojesr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractМанојловић, Драган; Милутиновиц-Николиц, Aлександра Д.; Мојовиц, Зорица Д.; Јовиц-Јовициц, Натаса П.; Банковиц, Предраг Т.; Јовановиц, Дусан М.; Зуниц, Марија Ј.; Модификовани бентонит као адсорбент и катализатор за пречишћавање отпадних вода које садрже боје; Модификовани бентонит као адсорбент и катализатор за пречишћавање отпадних вода које садрже боје;
dc.citation.volume64
dc.citation.issue3
dc.citation.spage193
dc.citation.epage199
dc.identifier.wos000280041500006
dc.identifier.doi10.2298/HEMIND091221023Z
dc.citation.other64(3): 193-199
dc.citation.rankM23
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-77954682872
dc.identifier.fulltexthttp://cherry.chem.bg.ac.rs/bitstream/id/8294/1091.pdf
dc.identifier.rcubKon_2093


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