Study on the pH Control and Ozygen-Releasing Characteristic of Ozygen-releasing Compounds

摘要：

Oxygen–releasing compounds (ORCs), such as metal peroxide is an emerging oxygen source for microbes in bioremediation of contaminated groundwater, but the high pH value caused by metal peroxide has negative influence on its application. Batch experiments were conducted to explore how to regulate pH during the process of releasing oxygen of calcium peroxide (CaO2). The results showed that the high pH caused by CaO2 could be regulated to the range of 6.5–8.5 that help for microbial growth by using potassium dihydrogen phosphate (KH2PO4) and ammonium sulphate ((NH4)2SO4), which are necessary nutrients for microbes. In addition, granular ORCs consisted of CaO2, KH2PO4, (NH4)2SO4, kaolin, etc. was prepared. The pH value of solution caused by granular ORCs approached the neutral, and its oxygen–releasing performance was also improved.

关键词： groundwater bioremediation ozygen–releasing compounds calcium perozide pH

作者: LIU Shejiang LIU Xiuli LI Xingang

作者单位: School of Environmental Science and Technology,Tianjin University,Tianjin 300072,China School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 461-464

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）