| 利用FeS去除水中硝基苯的试验研究 |
| 摘要点击 1498 全文点击 728 投稿时间：2012-02-13 修订日期：2012-05-24 |
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| 中文关键词 硝基苯 FeS 还原 去除率 影响因素 |
| 英文关键词 nitrobenzene FeS reduction removal efficiency influencing factor |
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| 中文摘要 |
| 为研究 FeS还原去除硝基苯的性能,采用批次试验的方法,考察了各因素对 FeS去除硝基苯性能的影响. 结果表明,在初始硝基苯浓度为 0.96 mmol·L-1条件下,当 FeS用量为 1.2 g时,反应 180 min后,硝基苯去除率达到 90%. 初始硝基苯浓度、FeS用量、温度、FeS重复使用次数对 硝基苯去除率有较大影响. 初始硝基苯浓度在 0.74~1.74 mmol·L-1之间变化时,初始硝基苯浓度每增加0.1 mmol·L-1,硝基苯去除率下降4.7%. FeS用量在 0.3~1.5 g内变化时, FeS用量每增加 0.3 g,硝基苯去除率增加近 20%; FeS用量为 1.8 g时,硝基苯去除率为 100%. 温度在 10~25℃范围内变化时,温度每升高 1℃,硝基苯去除率增加 1.6%; 温度为 30℃时,硝基苯去除率为100%. 硝基苯去除率随 FeS重复使用次数的增加而下降. 转速在 10~80 r·min-1内变化时,转速变化对硝基苯去除率的影响较小,硝基苯去除率稳定在75%左右. FeS对模拟化工废水有较好的处理效果,反应60 min后,硝基苯去除率为100%. |
| 英文摘要 |
| The nitrobenzene removal performance by iron sulfide was investigated in batch experiments. The effects of different factors were studied. The results showed that the removal efficiency of nitrobenzene was 90% as initial nitrobenzene concentration was 0.96 mmol·L-1, dosage of FeS was 1.2 g and the reaction time was 180 minutes. Initial nitrobenzene concentration, dosage of FeS, temperature and reused times of FeS had a significant influence on the removal efficiency of nitrobenzene. As the initial nitrobenzene concentration was in range of 0.74 to 1.74 mmol·L-1, the removal efficiency of nitrobenzene decreased by 4.7% with every 0.1 mmol·L-1 increasing of initial nitrobenzene concentration. As the dosage of FeS was in the range of 0.3 to 1.5 g, the removal efficiency of nitrobenzene increased by 20% with every 0.3 g increasing of FeS. As the dosage of FeS was 1.8 g, the removal efficiency of nitrobenzene was 100%. In the temperature range of 10 to 25℃, the removal efficiency of nitrobenzene increased by 1.6% with 1℃ increasing. As the temperature was 30℃, the removal efficiency of nitrobenzene was 100%. The removal efficiency of nitrobenzene decreased as the reused times of FeS increased. Rotational speed hardly had any influence on the removal efficiency of nitrobenzene. As the rotational speed was in the range of 10 to 80 r·min-1, the removal efficiency of nitrobenzene was around 75%. The nitrobenzene removal performance by iron sulfide was satisfied in the treatment of simulated chemical industrial wastewater, and after 60 min, the removal efficiency of nitrobenzene was 100%. |
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