Abstract: Research on the catalytic degradation of oil pollutants in slightly polluted water by using nano-MgO as catalyst has been carried out. The results indicate that the catalytic degradation effect of nano-MgO on oil pollutants in slightly polluted water is associated with the dosage of nano-MgO, pH and temperature. The degradation efficiency increases with the increase of dosage of nano-MgO, pH and temperature. The degradation rate of oil can be over 90% at definite conditions. GC/MS analysis shows that the amount of organics in slightly polluted water can be reduced from the previous 61 kinds to 16 kinds after catalytic degradation of nano-MgO. Therefore, nano-MgO is a kind of excellent water treatment agent, and can be applied to the removal of oil pollutants from slightly polluted water.

Key words: nano-MgO, oil pollutants, catalytic degradation, water treatment, slightly polluted water

摘要： 以纳米MgO为催化剂，进行了微污染水中石油污染物的催化降解研究。结果表明，纳米MgO对微污染水中石油的催化降解效果与MgO投加量、pH、温度有关，随着MgO投加量、pH、温度的增加，石油降解率升高；在一定的条件下，降解率可达到90%以上。GC/MS分析显示，MgO的催化降解作用可使石油微污染水中有机物数量由61种减少为16种。纳米MgO是一种很好的水处理剂，可用于微污染水中石油污染物的去除。

关键词: 纳米MgO, 石油污染物, 催化降解, 水处理, 微污染水

CLC Number: 

• X703