作　　者： ; ; ; ; (赵西源）; (周旭健）;

机构地区： 浙江大学机械与能源工程学院能源清洁利用国家重点实验室

出　　处： 《浙江大学学报（工学版）》 2015年第10期1842-1848,共7页

摘　　要： 以商业木质活性炭为原料,通过Fe（NO3）3催化改性结合二次活化的方法得到富含2~5nm中孔的适于吸附二恶英的活性炭.研究Fe（NO3）3与活性炭的质量浸渍比、改性温度、改性时间对活性炭孔结构变化的影响.结果表明,当改性温度为900℃,CO2体积流速为0.5L/min,质量浸渍比为1%时催化效果最好,改性2h后得到的活性炭2~5nm中孔孔容达到0.37cm3/g,占总孔容的62.1%.利用浙江大学研制的二恶英发生源系统搭建吸附实验台,吸附数据显示改性后活性炭吸附二恶英的能力明显增强,在同等条件下可以将二恶英毒性当量的移除效率从43.0%增加到61.4%. Commercial wood-based activated carbon was modified to prepare specified mesoporous activated carbon by Fe（NO3）3-impregnation coupled with CO2 activation in order to increase adsorption capacity of PCDD/Fs.Process variables such as impregnation ratio,activation temperature and activation time were considered.Results show that when the impregnation ratio is 1%,the temperature is 900 ℃,the rate of CO2 is 0.5L/min and the activation is 2hours,the mesopore（2-5nm）volume of modified activated carbon can reach 0.37cm3/g and account for 62.1%of the total pore volume.An adsorption generator was applied for the adsorption of PCDD/Fs.Results show that the modified one can have a larger adsorption capacity of PCDD/Fs compared to the original activated carbon.Its toxic equivalent quantity（TEQ）removal efficiency can reach 61.4%,while the original activated carbon is only 43.0%.

关 键 词： 二恶英 活性炭 催化改性 中孔 硝酸铁

领　　域： [化学工程]