SINTESIS DAN KARAKTERISASI KOMPOSIT KITOSAN-ZEOLIT TERAKTIVASI BASA-Fe SEBAGAI SISTEM LEPAS LAMBAT Fe(III)
Preparation of an iron (III) slow release materials using chitosan and alkaline activated zeolite and evaluation of their release behaviour in the 0.33 M citric acid solution have been done. The composites were prepared by mixing chitosan gel, alkaline activated zeolite, and FeSO4 solution. Then the...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/129914/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=70323 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Preparation of an iron (III) slow release materials using chitosan and alkaline
activated zeolite and evaluation of their release behaviour in the 0.33 M citric acid
solution have been done. The composites were prepared by mixing chitosan gel,
alkaline activated zeolite, and FeSO4 solution. Then the mixture was dripped into
NaOH solution. Composite synthesis was carried out by varying the consentration of
NaOH for zeolite activation. The structure of composite was characterized using
infrared spectrophotometer and X-Ray diffractometer. The surface morphology of
composite was analyzed using SEM and the thermal stabilities were analyzed using
TGA. The result of composite, with variation in mixing methode, releasing evaluation
didn�t show any difference in releasing behaviour, so that the composite made by
mixing the zeolite and Fe previously then chitosan (composite C) was selected as the
representatif of the other composites. Evaluation of release in the 0.33 M citric acid
for composite from consentration variation of NaOH showed that the release order of
Fe(III) is the composite C (6 M) > composite C (4 M) > Composite C (2 M) >
composite C (0 M) with values of k are 0.021 mg/g |
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