| 铁屑法处理含染料废水中铁屑表面化学研究 |
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| 引用本文： | 陈灿,施汉昌.铁屑法处理含染料废水中铁屑表面化学研究[J].环境化学,2004,23(1):90-95. |
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| 作者姓名： | 陈灿 施汉昌 |
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| 作者单位： | 环境模拟与污染控制国家重点联合实验室,清华大学环境科学与工程系,北京,100084;环境模拟与污染控制国家重点联合实验室,清华大学环境科学与工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金 ( 2 963 70 1 0 )资助项目 |
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| 摘 要： | 采用扫描电镜和X射线光电子能谱技术对铁屑法处理含染料废水中铁屑反应前后的表面进行了研究，结果表明：铁屑表面主要由Fe，C，O，S，Si以及其它构成铸铁的微量元素等组成．铁屑表面快速氧化是染料脱色的关键和前提步骤，铁屑表面铁的羟基氧化物增多是铁屑失活的重要原因．超声方法是铁屑再生方法之一,铸铁中的硫有助于染料脱色．
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| 关 键 词： | 铁屑法 SEM XPS 染料 |
STUDY ON THE IRON CHIP SURFACE CHEMISTRY OF IRON CHIP PROCESS TREATING WASTEWATER CONTAINING DYES |
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| CHEN,Can SHI Han,chang.STUDY ON THE IRON CHIP SURFACE CHEMISTRY OF IRON CHIP PROCESS TREATING WASTEWATER CONTAINING DYES[J].Environmental Chemistry,2004,23(1):90-95. |
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| Authors: | CHEN Can SHI Han chang |
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| Abstract: | Scanning electron microscopy(SEM)with elemental analysis by energy dispersive X ray spectroscopy(EDS)and X ray photoelectron spectroscopy(XPS)were employed to explore the changes on iron chip surface of iron chip process treating wastewater containing dyes The surface of iron chips was mainly composed of iron,carbon,oxygen,sulfate,silica,and other minor components of the cast iron The rapid oxidation of iron surface is the key step for dye decolorization The increasing of iron oxyhydroxide on iron surface could decrease iron activity Ultrasonication is a potential method to recover iron activity Sulfur of iron chip is helpful for decolorization |
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| Keywords: | iron chip process iron SEM XPS dye |
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