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以氯化锌作为活化剂制备银叶树果壳活性炭,分别考察了活化温度、活化剂浓度、料液比、活化时间对活性炭产品亚甲基蓝脱色率的影响。通过正交试验优化,得出在最佳制备工艺为,温度400℃,ZnCl_2浓度500 g/L,料液比1∶3(g/m L),活化时间60 min,所得成品亚甲基蓝脱色率达到97.06%,碘吸附值达到1 018.85 mg/g,苯酚吸附值达到802.66 mg/g,脱色、吸附性能优良,符合商品活性炭标准。
Effect of activation temperature, activator concentration, solid-liquid ratio and activation time on decolorization rate of methylene blue in activated carbon products were investigated by using zinc chloride as activator. Through orthogonal experiment, the decolorization rate of methylene blue in the finished product reached the best at the optimal temperature of 400 ℃, ZnCl 2 concentration of 500 g / L, solid-liquid ratio of 1: 3 (g / m L) and activation time of 60 min 97.06%, the iodine adsorption value reached 1 018.85 mg / g, the phenol adsorption value reached 802.66 mg / g, the decolorization and the adsorption performance were good, which accorded with the commodity activated carbon standard.