Journal of Environmental Engineering Technology ›› 2011, Vol. 1 ›› Issue (4): 295-299.doi: 10.3969/j.issn.1674-991X.2011.04.049

• Special Issue:National Major Science and Technology Program for Water Pollution Control & Treatment • Previous Articles     Next Articles

Treatment of berberine pharmaceutical wastewater containing copper by bipolar-electrochemical process

XIAO Shu-hu1,ZHANG Guo-fang1,2,SONG Yong-hui1,ZENG Ping1,LI Hui2   

  1. 1. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences
    2. College of Environmental and Biological Engineering, Shenyang University of Chemical Technology
  • Received:2011-03-25 Revised:2011-05-03 Online:2011-07-20 Published:2011-07-11
  • Contact: SONG Yong-hui E-mail:songyh@craes.org.cn

Abstract: The berberine pharmaceutical wastewater containing copper was treated by the bipolar-electrochemical process. The effects of electrode distance, current intensity and initial pH on the removal efficiencies of berberine and Cu2+ were studied in details. The optimal condition was determined as followed: the electrode distances of 2.0 cm, the current intensity of 4.0 A and initial pH of 0.4. Under the conditions, the concentrations of berberine and Cu2+ reduced from 1 700 and 22 000 mg/L to 120 and 55.0 mg/L within 300 min, and the removal efficiencies reached about 93.3% and 99.9%, respectively. According to the weight method, copper recovery rate was calculated as 97.1%. That is, about 21.35 kg of Cu could be recovered from per ton of such wastewater. Thus, it was proved that the bipolar-electrochemical process was an effective method for the treatment of berberine wastewater containing copper.

Key words: electrochemical process, pharmaceutical wastewater, copper-containing wastewater, berberine, copper recovery