中文摘要：

利用加入活化K2 S2 O8产生的硫酸根自由基（ SO-4·）降解水中2-氯苯酚（ o-chlorophenol），探讨了温度、pH、腐殖酸（ HA）、无机离子对2-氯苯酚降解的影响．结果表明，增加溶液中过硫酸盐的浓度或提高溶液反应温度，可促进2-氯苯酚的降解，而且2-氯苯酚的降解符合准一级反应动力学规律，其反应表观活化能为4．32 kJ·mol-1．酸性条件下2-氯苯酚的降解效果明显好于碱性条件．2-氯苯酚的降解受到Cl-、CO2-3和腐殖酸的影响．其中，腐殖酸和CO2-3都对反应有明显的抑制作用．Cl-在酸性和中性条件下也会抑制2-氯苯酚降解，但在碱性条件对反应影响不大．2-氯苯酚在SO-4·的作用下会最终降解为乙酸等小分子有机物并最终矿化，有时会伴随有中间产物二聚物的生成．

英文摘要：

Degradation of o-chlorophenol by sulfate radicals generated by heat activation of persulfate was investigated. This research focused on the influence of temperature, pH, humic acid （HA）, inorganic ions to the degradation efficiency. The results indicated that the high temperature and persulfate concerntration promoted the degradation of o-chlorophenol. Degradation of o-chlorophenol exhibited a second-order kinetics and the activation energy was 4. 32 kJ·mol-1 . Acidic condition is more beneficial for the o-chlorophenol degradation than alkaline condition. Both HA and CO2-3 inhibited the o-chlorophenol degradation. Cl- also inhibited the reaction at acidic and neutral conditions. However, at basic condition, such inhibition was not significant. It was presumed that o-chlorophenol was eventually mineralized. However, chlorophenol dimers as intermediates were detected during this process.