ISSN : 1225-3480
With the increasing production of shellfish farming in Korea and neighboring countries, mountainous accumulations of waste seashells have become environmental problems. To recycle the waste seashells into any product, the first process step is to clean the dirt and other organic materials from the surface of the shells. The cleaning process should be effective and low cost in order for the final product to be commercially competitive and viable. In this paper, we report the cleaning effect of five different commercially and readily available and popular industrial and household cleaning chemicals on the surface of abalone shells: Finish, Quickclean, Chlorox, Metex TS-40A, and NaOH. The abalone shells were treated with the chemicals at 40 °C for 22 hours. All the chemicals removed effectively the organic layers in the inner and outer surfaces. Specially, we found that the NaOH solution removed the outer calcite regions preferentially than the inner aragonite region.
Colfen H.; Qi L.M. (2001) A Systematic Examination of the Morphogenesis of Calcium Carbonate in the Presence of a Double-Hydrophilic Block Copolymer. Chem.? Eur. J., 7: 106-116.
Gerhard E. M.; Wang W.; Li C.; Guo J.; Ozbolat I.T.;Rahn K.M.; Armstrong A.D.; Xia J.; Qian G.; Yang J. (2017) Design strategies and applications of nacre-based biomaterials, Acta Biomaterialia, 54:21-34.
Gong H.; Yang Y.; Pluntke M.; Marti O.; Majer Z.;Sewald N.; Volkmer D. (2014) Calcium carbonate crystal growth beneath Langmuir monolayers of acidic β-hairpin peptides. Dalton Trans., 43:16857-16871.
Lee JS, Cho JH, Kim DY, Hwang KH, (2013) Strategies for Eco-friendly Utilization and Industrialization of Fishery By- products (Report, Korea Maritime Institute).
Ni M.; Ratner B. D. (2003) Nacre surface transformation to hydroxyapatite in a phosphate buffer solution, Biomaterials, 24: 4323-4331.
Rodrıguez-Navarro A.B.; CabraldeMelo C.; Batista N.;Morimoto N.; Alvarez-Lloret P.; Ortega-Huertas M.;Fuenzalida V. M.; Arias J. I.; Wif J. P.; Arias J. L. (2006) Microstructure and crystallographic-texture of giant barnacle (Austromegabalanus psittacus) shell. Journal of Structural Biology, 156: 355-362.
Woo DS, (2011) Development of high performance nano sized polymer ceramic coating technology using CaCO3 collected from oyster shells (Report, Korea Maritime Institute).
Zaremba C. M.; Morse D. E; Mann S.; Hansma P. K.;Stucky G. D. (1998) Aragonite-Hydroxyapatite Conversion in Gastropod (Abalone) Nacre, Chem. Mater., 10: 3813-3824.
