【摘要】 以葵花籽壳为原料,比较了水蒸气物理法、磷酸转炉法和磷酸微波法制取的活性炭,以磷酸微波法制取的活性炭各项性能较优。在微波功率为700W的条件下,采用正交试验法对磷酸微波法制取活性炭性能的影响因素如:活化剂浓度、处理时间及催化剂用量进行系统研究,得到磷酸微波法制备活性炭的最佳工艺。亚甲基蓝吸附值的最佳工艺条件为磷酸浓度30°Be′、活化时间25min、催化剂1用量4%、催化剂2用量2%;碘吸附值的最佳工艺条件为磷酸浓度35°Be′、活化时间25min、催化剂1用量4%、催化剂2用量2%;焦糖脱色率的最佳工艺条件为磷酸浓度30°Be′、活化时间35min、催化剂1用量2%、催化剂2用量2%。更多还原

【Abstract】 Activated carbons from the shell of sunflower seed have different qualities by the preparation methods of steam activation, phosphoric acid-spinning stove and phosphoric acid-microwave. Results showed that the properties of activated carbon by phosphoric acid-micvowave method are superior. Influencing factors on properties of activated carbon such as phosphoric acid concentration, activation time and catalyst were systematically studied by means of orthogonal test under microwave irradiation of 700W. The optimum condition for decolorization capacity of methylene blue was obtained as follows: phosphoric acid concentration 30°Be′, activation time 25min, catalyst No.1 4%, catalyst No.2 2%. The optimum condition for iodine number was obtained as follows: phosphoric acid concentration 35°Be′, activation time 25min, catalyst No.1 4%, catalyst No.2 2%. The optimum condition for decolorization capacity of caramel adsorption was obtained as follows: phosphoric acid concentration 30°Be′, activation time 35min, catalyst No.1 2%, catalyst No.2 2%.更多还原