活性血炭的制备及其吸附性能测定

Preparation and Adsorption Performance of Activated Blood Carbon

利用猪血粉为原料,分别以磷酸、氯化锌和氯化镁为活化剂,采用化学活化法制备了3种活性血炭,通过BET、SEM对3种活性血炭进行了表征,通过亚甲基蓝吸附实验、碘吸附实验和酸性品红吸附实验评价了3种活性血炭的吸附性能。结果表明,在浸渍比为2∶1、浸渍时间为24 h时,分别以磷酸、氯化锌、氯化镁为活化剂(活化温度分别为500℃、550℃、600℃)得到的3种活性血炭均具有较好的吸附性能,其中以磷酸为活化剂制备的活性血炭的吸附性能最好,其亚甲基蓝吸附值为1900.00 mg·g^-1、碘吸附值为810.00 mg·g^-1、酸性品红吸附值为2200.00 mg·g^-1。活性血炭的研究为充分利用畜禽血液资源提供了有效途径。

Using pig blood powder as a raw material,we prepared three activated blood carbons by a chemical activation method with phosphoric acid,zinc chloride,and magnesium chloride as activators,respectively.Moreover,we characterized the three activated blood carbons by BET and SEM.Furthermore,we evaluated the adsorption performance of the three activated blood carbons by Methylene Blue adsorption experiment,iodine adsorption experiment,and Acid Fuchsin adsorption experiment.The results show that the three activated blood carbons prepared with phosphoric acid(the activation temperature of 500℃),zinc chloride(the activation temperature of 550℃),and magnesium chloride(the activation temperature of 600℃)as activators have better adsorption performance under the conditions as follows:the impregnation ratio of 2∶1,and the impregnation time of 24 h.Among which,the adsorption performance of the activated blood carbon prepared with phosphoric acid as an activator is the best,and the adsorption values of Methylene Blue,iodine,and Acid Fuchsin are 1900.00 mg·g^-1,810.00 mg·g^-1,and 2200.00 mg·g^-1,respectively.The study of activated blood carbon provides an effective way to make full use of blood resources of livestock and poultry.