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Effect of chemical treatment on adsorption characteristics of apricot stone biosorbent

dc.creatorŠoštarić, Tatjana
dc.creatorPetrović, Marija
dc.creatorPetrović, Jelena
dc.creatorMilojković, Jelena
dc.creatorKragović, Milan
dc.creatorLačnjevac, Časlav
dc.creatorStojanović, Mirjana
dc.date.accessioned2023-04-21T11:25:08Z
dc.date.available2023-04-21T11:25:08Z
dc.date.issued2015
dc.identifier.issn0351-9465
dc.identifier.urihttps://ritnms.itnms.ac.rs/handle/123456789/366
dc.description.abstractU radu je ispitan uticaj hemijske modifikacije, primenom NaOH, na strukturne promene lignoceluloznog ostatka koštica kajsije (KK) i na adsorpcioni kapacitet biomaterijala prema jonima bakra. Biomaterijal pre i posle hemijskog tretman ispitan je skenirajućom elektronskom mikroskopijom (SEM) i Furijeovom transformacionom infracrvenom spektroskopijom (FTIR). SEM je pokazao da nakon hemijskog tretmana struktura materijala je rapavija kao posledica uklanjanja voska, masti i ostalih nečistoća i pristupačnija molekulima vode i jonima bakra. FTIR analiza je pokazala da pik koji se kod prirodnog materijala javlja na 1735 cm-1 (ukazuje na valencionu vibraciju -C=O veze, koja potiče od karboksilnih grupa ili estra ili voskova i masti) kod modifikovanog materijala je značajno redukovan. Određivanjem tačke nultog potencijala utvrđeno je da je posle modifikacije došlo do promene naelektrisanja površine materijala (pHpzc kod KK je 4,9 a kod KKM je 6,0). Kao posledica tretmana, promene koje su se dogodile uslovile su pet puta veči adsorpcioni kapacit kod modifikovanog (10,8 mg/g) u odnosu na prirodni biomaterijal (2,5 mg/g).sr
dc.description.abstractThis paper deals with investigation of alkali treatment effect on structural changes of apricot stones lingo-cellulosic residue (KK) and on adsorption capacity based on adsorption of Cu(II) ions from wastewater. Characterization of natural and alkali treated biomaterial were done by FT-IR and SEM. SEM micrographs showed that the removal of the surface impurities after treatment, improves the surface roughness of KK thus opening more hydroxyl groups and other reactive functional groups on the surface. FT-IR spectrum showed that the peak at 1735 cm-1 from of untreated KK, which is assigned to aromatic carbonyl or carboxyl C=O stretching of carboxylic acids or their esters, was reduced after treatment. After treatment change of point of zero charge value of modified biomaterial was evident: from pHPzc=4.9 (KK) to pHPzc=6.0 (KKM). Overall, the changes made by alkali treatment of KK, resulted in five times higher adsorption capacity.en
dc.publisherInženjersko društvo za koroziju, Beograd
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/31003/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceZaštita materijala
dc.subjectlignocelulozni materijalisr
dc.subjectkoštice kajsijesr
dc.subjecthemijska modifikacijasr
dc.subjectbiosorpcijasr
dc.subjectbakarsr
dc.subjectlingocellulosic materialen
dc.subjectcopperen
dc.subjectchemical modificationen
dc.subjectbiosorptionen
dc.subjectapricotsen
dc.titleUticaj hemijske modifikacije na adsorpcione karakteristike biosorbenta na bazi koštica kajsijasr
dc.titleEffect of chemical treatment on adsorption characteristics of apricot stone biosorbenten
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage328
dc.citation.issue3
dc.citation.other56(3): 321-328
dc.citation.rankM24
dc.citation.spage321
dc.citation.volume56
dc.identifier.doi10.5937/ZasMat1503321S
dc.identifier.fulltexthttps://ritnms.itnms.ac.rs/bitstream/id/146/363.pdf
dc.identifier.rcubconv_144
dc.type.versionpublishedVersion


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