资源化利用鸭粪制备活性炭的研究

Study on the Preparation of Activated Carbon from Duck Manure

[目的]探讨鸭粪作为活性炭制备原料的资源化利用可行性。[方法]以鸭粪为原料,采用氢氧化钾为活化剂制备活性炭,以碘吸附值和亚甲基蓝吸附值为评价指标,研究鸭粪活性炭制备过程中固液比、活化剂浓度、活化时间、活化温度等因素对活性炭产率和吸附性能的影响。[结果]鸭粪活性炭最佳制备工艺条件:固液比为1∶2.5、KOH浓度为40%、活化时间为45 min、活化温度为800℃,其活性炭产率、碘吸附值和亚甲基蓝吸附值分别为32.3%、388 mg/g和53 ml/g。在最佳制备工艺条件下添加25%的锯木屑,能明显提高活性炭的吸附性能。[结论]该研究结果为鸭粪的资源化利用提供了一种新型环保的技术。

[Objective] The research aimed to study the feasibility of activated carbon preparation using duck manure in a resource utilization way.[Method] Activated carbon was prepared from duck manure using KOH as the activator.The performance of the samples was evaluated by adsorption of iodine and methylene blue.The effects of different preparation conditions on the yield and adsorption performance of the samples were studied,including the impregnation ratio,concentration of activators,activation time and activation temperature.[Result] The results showed that the best preparation conditions of impregnation ratio,KOH mass fraction,activation time and activation temperature were 1∶ 2.5,40％,45 min and 800 ℃,respectively.The corresponding yield,iodine and methylene blue adsorption value were 32.3％,388 mg/g and 53 ml/g,respectively.In addition,the adsorption performance could be improved by adding 25％ wood sawdust.[Conclusion]This study could provide new technology for resource utilization of duck manure.