Study on Degradation Mechanism of Tank Lining Material caused by Kitchen Drainage.

Part2. Results of Evaluating Tolerance to Organic Acid on Lining Material.

Abstract

In this report lining material was soaked in the imitation drainage (lower-fatty-acid solution) and the imitation scum(higher fatty acid), and that was estimated appearance, weight, and volume at interval. As a result, it has been large to change in the weight and volume, when it was soaked into higher fatty acid more than into lower-fatty-acid solution. And so it was guessed that the key factor of degradation is not the lower fatty acid contained in drainage but higher fatty acid contained in scum.Moreover, the tendency for degradation speed to change due to the bridge construction density of lining material and the molecular weight of organic acid has been grasped.