... results of Figure 1, and 4, CAAs were converted to biodegradable products at the beginning of hydrothermal reaction The production of biodegradable products by structural conversion of CAAs required ... hydrothermal reaction at 250 C and MPa Journal of Water and Environment Technology, Vol.1, No.2, 2003 acid, % of glycolic acid and % of formic acid were detected in The amount of malic acid decreased, and ... and Thus, biodegradability and the total amount of biodegradable substances in products are investigated Figure represents the effect of reaction time on the biodegradability improvement of products...