School of Chemistry and Chemical Engineering, South Campus, Shandong University, No. 17923 Jingshi Road, Jinan 250061, Shandong Province, PR China.
J Hazard Mater. 2010 Jun 15;178(1-3):1137-40. doi: 10.1016/j.jhazmat.2010.01.125. Epub 2010 Feb 1.
The activated carbon-MnO(2) catalyst has been prepared by the dipping-calcination method with activated carbon used as a carrier. The catalyst is used for catalyzing/degrading simulated o-chlorophenol wastewater with chlorine dioxide as oxidant. The COD removal efficiency by catalytic oxidation is 93.5% at the condition of wastewater's COD is 2085 mg/l, the pH value is 1.2, the dosage of chlorine dioxide is 1000 mg/l, the dosage of activated carbon-MnO(2) catalyst is 6g by reacting 60 min. The COD removal efficiency by catalytic oxidation is great than that of chemical oxidation. The catalytic activity of the catalyst only decreased a small amount in terms of COD removal efficiency after using 11 times. The COD removal efficiency is 80-90% during the continuity wastewater treatment experiment, which indicates that the wastewater treatment process is practical. The FTIR spectra indicate that the active ingredient of manganese dioxide is linked with activated carbon by chemical bond, not merely mechanical blending.
以活性炭为载体，采用浸渍-煅烧法制备了活性炭-MnO2 催化剂。该催化剂用于催化/降解以二氧化氯为氧化剂的模拟邻氯苯酚废水。在废水 COD 为 2085mg/L、pH 值为 1.2、二氧化氯用量为 1000mg/L、活性炭-MnO2 催化剂用量为 6g 的条件下，催化氧化的 COD 去除率为 93.5%。催化氧化的 COD 去除效率大于化学氧化。该催化剂在重复使用 11 次后，其催化活性在 COD 去除效率方面仅略有下降。在连续废水处理实验中，COD 去除效率为 80-90%，表明该废水处理工艺实用。FTIR 谱图表明，二氧化锰的活性成分与活性炭通过化学键相连，而不是仅仅机械混合。
