Evaluation of Environment Impact of PCDL Aliphatic Hyperbranched Polyurethane

Abstract:

Biodegradability was adopted to evaluate the environment impact of PCDL type of aliphatic hyperbranched polyurethane which was used as the substrate of microorganism. The main results obtained by the method of respiratory curves were as follows. When the concentration of substrate was 0~500mg/L, the respiratory curves of the substrate were under the curve of endogenous, which showed that the substrate has inhabiting effect on microorganism. When the concentration of the substrate was 300mg/L, the utilization of the substrate by microorganism was the most. The main results obtained by the method of COD30 were as follows. When sludge concentration was 1000mg/L and pH was 7, the biodegradation rate of 300mg/L PCDL aliphatic hyperbranched polyurethane was only 5.78%. Under above condition, the biodegradation rates of PCDL aliphatic hyperbranched polyurethane with other concentrations were much smaller. Moreover, as indicated in the respiratory curves, the effect of sludge concentration and pH on the biodegradability of the substrate was not very obvious. Under the experimental conditions, when the concentration of the substrate was 300mg/L, the sludge concentration was 3000mg/L and pH was 9, the biodegradability of the substrate was the best.

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 868-871
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.868
• Online since: December 2012
• Authors: Xue Chuan Wang, Yu Qiao Fu, Juan Li
• Keywords: Biodegradability, Environment Impact, Hyperbranched Polyurethane, PCDL

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