Characterization of Chitin Synthesized from Snail Shell
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Date
2017
Authors
Adeosun, S.A
Gbenebo, O.P
Akpan, E.I
Olaleye, S.A
Journal Title
Journal ISSN
Volume Title
Publisher
Springer, Cham
Abstract
Thermogravimetric analysis was used to analyze chitin thermal stability present in unprocessed and processec snail shell sanples using different concentrations of Hel and NaOH. The res !t shows that 42% of CaC03 in the snail shell decomposes between 699-779 "C while decomposition of chitin (2.11 %) starts at 275°C and ends at 335 "C. De-mineralization and de-proteinization of the snail shell using 1.5 M H I and 0.4 M KaOH eliminates CaC03 formation and sample shows existence of 60% chitin decomposing between 346 and 412°C. The XRD of virgin snail shell showing the mai diffraction face inensity for CaC03 occurring at 28 = 29.S" with other CaC03 peaks occur at 28 == 30.2°, 39.3", 41.0°, 44.2°, 45.9°, 48.9°, 51.5°, 53.1 ° and 55.6°. Chitin present c ccurs at reflection 28 =: 36.3° with weak intensity and the XRD shows no evidence of CaC03 but two chitin crystalline peaks at 20.6° and 26.3° wi h 78% owest crystallinity index.
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Keywords
Snail shell , Chitin , Extraction , parameters
Citation
Adeosun S.O, Gbenebor O.P, Akpan E.I, Olaleye S.A (2017) Characterization of Chitin Synthesized from Snail Shell. 146th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham