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以商品活性炭为原料、碳酸钾和助剂为复合添加剂,浸渍过程采用超声波处理,进行再活化、酸洗、水洗.通过测定所制备活性炭的碘值、亚甲蓝值及氮气吸附、脱附等温线,研究了添加剂和超声波处理对活性炭碘值、亚甲蓝值及中孔结构的影响.结果表明:复合添加剂有利于提高活性炭碘值和亚甲蓝值;在浸渍过程中采用超声波处理,相对于常规浸渍,更加有利于提高活性炭吸附性能和中孔率,但是活性炭的碘值、亚甲蓝值和中孔率随着超声波功率和时间的增加而降低.试验范围内,超声波功率40 W,处理时间50 min时,活性炭的吸附性能及中孔率最高.
Activated carbon as raw materials, potassium carbonate and additives as a composite additive, the impregnation process using ultrasonic treatment, reactivation, pickling, washing. Determination of the prepared activated carbon iodine value, methylene blue value and nitrogen adsorption, desorption isothermal The effects of additives and ultrasonic treatment on the iodine value, methylene blue value and mesopore structure of activated carbon were investigated. The results showed that the composite additive was beneficial to improve the iodine value and methylene blue value of activated carbon; ultrasonic treatment was used in the impregnation process, However, the iodine value, methylene blue value and mesoporosity of activated carbon decreased with the increase of ultrasonic power and time.Under the experimental range, the ultrasonic power was 40 W, When the treatment time was 50 min, the adsorption capacity and mesoporosity of activated carbon were the highest.