铁系添加剂对污泥基活性炭性能与结构的影响

PDF全文下载：2016060654

孙瑾，羊依金*， 龙宇， 信欣， 谭显东， 赵芯玉

(成都信息工程大学 资源环境学院，四川 成都610225)

摘要：通过在污泥中分别掺入铁系添加剂（氯化铁、氯化亚铁、三氧化二铁），采用化学活化法制备出改性污泥活性炭。以吸附碘值为标准，考察了添加剂掺入比例、活化剂浓度、热解温度、热解时间对活性炭吸附性能的影响。并对其结构进行比表面积及孔隙结构（BET）、表面形态(SEM)、X射线衍射(XRD)、红外光谱（FT-IR）等表征分析。结果表明：相比于纯污泥活性炭，掺入FeCl₃、FeCl₂、Fe₂O₃制备出的改性污泥活性炭的吸附碘值分别提高了31.59%、18.23%、15.48%。比表面积分别提高了101.6%、91.4%、79%。而且表面都具有羟基、羧基、酚羟基、碳碳双键和三键等官能团。

关键词： 铁系添加剂；改性污泥活性炭；官能团

中图分类号：X 705文献标志码：A

Effects of Fe-Containing Additives on Performance and Structure of Sludge Activated Carbon

SUN Jin, YANG Yijin, LONG Yu, XIN Xin, TAN Xiandong, ZHAO Xinyu

(College of Resources and Environment，Chengdu University of Information Technology, Chengdu 610225, China)

Abstract: Modified sludge activated carbon was prepared by chemical activation by adding iron additives(FeCl₃，FeCl₂，Fe₂O₃) in materialusing chemical activation.The effect on performance of additive proportion, activator concentration, pyrolysis temperature and time, solid-liquid ratio was studied on the basis of lodine adsorption value. The structure of activated carbon was analyzed by specific surface area(BET), surface morphology(SEM), X-ray diffraction(XRD) and infrared spectroscopy(FT-IR).The results showed that compared with pure sludge activated carbon,lodine adsorption value increased by 31.59%,18.23% and 15.48% respectively, and specific surface area increased by 101.6%,91.4%,79% respectively. And there are—OH,—COOH, Ar—OH,CC and C≡C functional group on the surface.

Key words: iron additives; modified sludge activated carbon; functional group

 收稿日期：2015-07-28

基金项目：四川省教育厅重点项目(12ZA019)；四川省科技厅计划项目（2014JY0245）.

作者简介：孙瑾(1991—)，女，硕士研究生.*通信联系人.

文章编号：16726987（2016）06065406；DOI：10.16351/j.16726987.2016.06.012