Degradation of bisphenol-A using ultrasonic irradiation assisted by low-concentration hydrogen peroxide

Kejia Zhang, Naiyun Gao, Yang Deng, Tsair Fuh Lin, Yan Ma, Lei Li, Minghao Sui

研究成果: Article同行評審

51 引文 斯高帕斯(Scopus)

摘要

This study investigated the degradation of bisphenol-A (BPA) by ultrasonic irradiation in the presence of different additives (H2O2, air bubbles and humic acid) under various operating conditions, i.e., ultrasonic frequency, power intensity and power density. The results demonstrated that the BPA degradation followed pseudo first-order kinetics under different experimental conditions. The optimum power intensities were 0.9, 1.8, and 3.0 W/cm2 at the frequencies of 400, 670, and 800 kHz, respectively. At the fixed frequency (800 kHz), the degradation rate of BPA was shown proportional to the increase of power density applied. With this manner, the BPA sonolysis could be facilitated at H2O2 dosage being lower than 0.1 mmol/L; while BPA degradation was hindered at H2O2 concentration in excess of 1 mmol/L. Additionally, BPA removal was shown to be inhibited by the presence of aeration and humic acid during ultrasonic irradiation. The present study suggested that the degradation rate of BPA assisted by ultrasonic irradiation was influenced by a variety of factors, and high BPA removal rate could be achieved under appropriate conditions.

原文English
頁(從 - 到)31-36
頁數6
期刊Journal of Environmental Sciences
23
發行號1
DOIs
出版狀態Published - 2011 1月

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 環境化學
  • 環境科學 (全部)

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