一步法制备糖蜜基活性炭及其界面吸附行为

发布时间：2018-07-04 15:39

  本文选题：糖蜜 + 活性炭　； 参考：《高等学校化学学报》2017年12期

【摘要】：以糖厂废弃的糖蜜为原料,Na_2CO_3为活化剂,采用一步直接化学活化法制备了糖蜜基活性炭(AC).采用X射线衍射(XRD)、扫描电子显微镜(SEM)、N_2吸附-脱附及元素分析手段对产物进行了表征,证实其为多孔的石墨化碳材料,比表面积高达1023 m~2/g.研究了糖蜜基活性炭对溶液中的重金属离子Pb(Ⅱ)的脱除性能,结果表明:糖蜜基活性炭的吸附容量高于市售活性炭(CC),且所需吸附时间和投炭量均低于市售活性炭;其吸附动力学符合准二级动力学的Langmuir吸附,为单分子层的化学吸附;吸附Pb(Ⅱ)的糖蜜基活性炭可循环再生和重复使用.
[Abstract]:The molasses based activated carbon (AC) was prepared by one step direct chemical activation method using the waste molasses from the sugar mill as the raw material and the gas as activator. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), adsorption-desorption and elemental analysis. It was confirmed that the product was a porous graphitic carbon material with a specific surface area of 1023 mm2 / g. The removal of heavy metal ion Pb (鈪，

本文编号：2096543