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Ce掺杂Fe-Sn负载斜发沸石电催化氧化含酚废水

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Indexed by:期刊论文

Date of Publication:2013-08-28

Journal:水处理技术

Included Journals:PKU、ISTIC、CSCD

Volume:39

Issue:8

Page Number:67-70

ISSN No.:1000-3770

Key Words:斜发沸石 负载型催化剂 苯酚废水 三维电催化 去除率 clinoptilolite supported catalyst phenol wastewater,3D electric catalytic removal rate

Abstract:采用浸渍焙烧法制备了以斜发沸石为载体,Ce掺杂Fe、Sn氧化物的负载型催化剂,用扫描电子显微镜(SEM)和X射线衍射(XRD)对催化剂的表面形貌、晶相结构进行了表征,以苯酚为模拟含酚废水对催化剂的电催化性能进行了测定,并探讨了催化剂投加量、电流密度、溶液初始pH对苯酚降解过程的影响.结果表明,当负载催化剂活性组分Fe、Sn、Ce的摩尔比为6∶3∶1时,在催化剂的表面形成了明显的Fe、Sn、Ce氧化物衍射峰;该催化剂在三维电催化降解苯酚体系中,当苯酚初始质量浓度为100 mg/L、pH为5、催化剂投加量为15 g/L、电流密度为42.6 mA/cm2、曝气体积流量为0.1 m3/h、电解60 min时,苯酚和TOC去除率分别达93.03%和80.34%;重复使用6次的催化剂仍具有很好的催化活性,苯酚去除率和TOC去除率仍可达到80.31%和75.56%.

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