磷酸法制备棉秆活性炭的研究

Study on the Preparation of Activated Carbon from Cotton Stalks with Phosphoric Acid

研究利用棉秆为原料,采用磷酸活化法制备活性炭的工艺,探讨制备过程中诸因素对活性炭性能的影响,得出适宜的工艺条件。结果表明:利用棉秆以磷酸为活化剂,可制得性能优良的活性炭产品;所得活性炭产品得率为34%,活性炭对亚甲基兰脱色力为292.7mg·g-1,碘吸附值898.2mg·g-1,所制备的活性炭对Cr(Ⅵ)有较好的吸附性能。

This paper introduces the method of using phosphoric acid activation to prepare activated carbon from cotton stalks. The effects of various factors in the preparation process on the adsorption property of activated carbon have been investigated. The optional condition of preparation of activated carbon from cotton stalks is put forward. Meanwhile the adsorbent property of activated carbon on heavy mental ion Cr^6＋ is determined. The result shows the decolorizing ability of the prepared activated carbon to methylene blue is 292.7 mg·g^-1 iodine value of activated carbon 898.2 mg·g^-1 . And the yield of the prepared activated carbon is 34%.