Sun Zhi-zhong, Zhao Lei, Ma Jun
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
Huan Jing Ke Xue. 2006 Feb;27(2):285-9.
Effect of background constituents on the catalytic ozonation of nitrobenzene was investigated. Degradation rates of ozonation alone, ceramic honeycomb and modified ceramic honeycomb-catalyzed ozonation in tap water increased by 4.90%, 2.47% and 5.12% than those in distilled water respectively. The removal rate of ozonation alone increased by 6.25% with the increase of the concentration of magnesium ion (0 to approximately 8 x mg x L(-1)), but those of other two processes decreased by 11.41% and 17.64%, respectively, under the same experimental condition. Degradation efficiency of ozonation alone, ceramic honeycomb and modified ceramic honeycomb-catalyzed ozonation decreased by 4.42%, 9.38% and 12.24%, respectively, with the increase of the concentration of chloride ion (0 to approximately 40 mg x L(-1)). At the lower concentration, humic acid could accelerate the degradation of nitrobenzene, however, the reaction was retarded at higher concentrations of humic acid. The experiment also studied the influences of the applied ozone and initial concentration of nitrobenzene.
研究了背景成分对硝基苯催化臭氧化的影响。单独臭氧氧化、陶瓷蜂窝和改性陶瓷蜂窝催化臭氧氧化在自来水中的降解速率分别比在蒸馏水中提高了4.90%、2.47%和5.12%。在相同实验条件下，单独臭氧氧化的去除率随着镁离子浓度（0至约8mg·L⁻¹）的增加而提高了6.25%，但其他两种工艺的去除率分别下降了11.41%和17.64%。随着氯离子浓度（0至约40mg·L⁻¹）的增加，单独臭氧氧化、陶瓷蜂窝和改性陶瓷蜂窝催化臭氧氧化的降解效率分别下降了4.42%、9.38%和12.24%。在较低浓度下，腐殖酸可加速硝基苯的降解，然而，在腐殖酸浓度较高时反应受到抑制。实验还研究了臭氧投加量和硝基苯初始浓度的影响。
