Effects of Cleaning Chemicals on the Surfaces of Waste Halitios discus hannai Shells
Youn-Seoung Lee, Jeong-Ho Park and Sang-Mo Shin
Department of Information Communication Engineering, Hanbat National University, Daejeon 34158, Republic of Korea Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Republic of Korea Department of Creative Conv
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.
  
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