【摘要】 以桐壳为原料,采用以氯化锌为活化剂的化学活化法制备桐壳活性炭,研究了活化温度、活化时间、物料比(氯化锌/桐壳质量比)等条件对活性炭吸附性能的影响,通过SA3100型表面积和细孔分析仪、亚甲基蓝和苯酚吸附值等对活性炭进行表征,确定了制备活性炭的优化工艺条件。结果表明:氯化锌/桐壳比为3/1,在400℃下活化1 h时所制备的活性炭对亚甲基蓝和苯酚吸附吸附值分别为373和450 mg/g;对染料废水吸附符合拟二级动力学模型。更多还原

【Abstract】 The activated carbon was prepared from tung nut shell by the activation of zinc chloride.The effects of different parameters such as activating temperature,activating time and ZnCl2/tung nut shell ratio were investigated.The tung nut shell based activated carbons were measured on a Beckman coulter SA3100 surface area and pore size analyses,and characterized by determination of adsorption value of methylene blue and phenol in their aqueous.The results showed that,the activated carbon,prepared at ZnCl2/tung nut shell ratio of 3/1,pyrolysis temperature of 400 ℃ and retention time of 1 h had the highest capacity for methylene blue and phenol adsorption of 373 and 450 mg/g.The adsorptions of dyes ontoactivated carbon followed pserdo-second-order kinetics model.更多还原