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Aerobic biodegradation of alkylphenol ethoxylates
Jianliang Zhao1, Gaoyong Zhang, Yong Qin
1Key Laboratory of Surfactant, China Research Institute of Daily Chemical Industry, Taiyuan, PR China.
Abstract:
Primary aerobic biodegradation of alkylphenol ethoxylates (APEOs) was studied using a new simple and fast porphyrin method, which did not require the extraction step. Extent of primary biodegradation of a nonylphenol ethoxylates (NP-10) was excess of 92% after 1.5 days, and reached 99% after 2 days, which was similar to the results obtained using modified CTAS (thiocyanate active substances) method. Degradation of benzene ring of NP-10 was studied using UV-absorbance at 277 nm in chloroform. Results showed that only little of benzene ring was degraded.
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