CN105621544A - 一种新型电絮凝吸附电极材料的制备及应用 - Google Patents
一种新型电絮凝吸附电极材料的制备及应用 Download PDFInfo
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Abstract
本发明公开了一种电絮凝吸附凝胶电极材料的制备及用于治理水处理的应用,属于电化学电极材料的制备领域,适用于环境污染物的絮凝降解领域。Fe-Al复合凝胶具有吸附,孔隙率高,比表面积大,电导率高,外观形状可控,处理废水效果好,操作简单,兼具电絮凝,吸附和氧化还原的复合型电极。制备新型凝胶复合电极因操作简单、无二次污染、成本低等优点,解决了目前电絮凝成本低,耗材多,易钝化的问题。传统的处理有机废水的方法效率低,利用此凝胶电极超声电絮凝吸附处理有机废水成为一种新的颇具潜力的方法,在废水处理领域中具有很大的应用价值。
Description
技术领域
本发明涉及一种Fe/Al复合凝胶电极的制备方法,属于环境水处理技术领域。
背景技术
近年来,随着人类社会发展和进步,人们对水的消耗和污染都在加剧,有机物废水污染日益严重,废水重金属含量高,人们对污水的处理净化和回用变得很重要。因此寻找一种稳定有效,设备简单的污水处理方法成为人们研究和努力的方向。电絮凝处理,超声处理和吸附技术都有各自独特的优点,可以有效的去除有机物和重金属,由于这些方法开辟了一种电化学的绿色途径,因此引起了广泛的兴趣。
目前电絮凝的反应机理是以铝、铁等金属为阳极,在直流电的作用下,阳极溶蚀,产生金属离子,在经历一系列水解、聚合、亚铁的氧化过程,产生各种羟基络合物,这种羟基络合物具有很强的絮凝作用;阴极可以使废水中氢离子还原为氢气,氢气发生气浮作用,这两种作用可以去除废水中的胶体、悬浮物质等。但现有方法存在以下不足:第一、电解效果不理想,很难将废水达标,第二、电解消耗阳极,极板更换过于频繁,耗材多,第三、阳极电解板在电絮凝过程中容易发生钝化问题,降低电解效率。本发明专利公布了一种Fe/Al复合凝胶电极的制备方法,可以有效克服以上问题。
发明内容
本发明所要解决的技术问题是克服现有技术的不足,目的是为了提高电解效率,解决钝化问题,多种处理方法融为一体,操作简单,并进行实际操作,在废水中的应用。反应机理:通入直流电源,Fe/Al凝胶复合阳极在外加电场作用下,产生金属阳离子Fe3+或Al3+,阴极产生·OH,两者结合生成氢氧化物和多核羟基配合物,最终形成氢氧化铁和氢氧化铝絮体,通过吸附架桥或电荷中和将大分子有机物沉降下来。在电解过程中,Fe/Al凝胶复合电极由于凝胶具有大比表面积,孔隙率高,可以吸附大量有机物到电极表面,并发生反应。
本发明现所采用的技术方案是:将金属引入到小分子凝胶剂中是制备功能性凝胶的一条重要途径,提高电导率,产生铁铝复合氢氧化物絮体,海藻酸钙与铁铝置换成海藻酸铁铝凝胶,具有高吸附性。对含金属的小分子凝胶体系的研究将是制备具有独特性质超分子凝胶的一个热点。本发明节省资源,充分利用废铁屑,降低了电极成本,将无用的金属变为有用的絮凝剂,净化水质,是环保友好材料。一种Fe-Al复合凝胶电极材料的制备及应用方法,包括具体以下步骤:
步骤1:是以海藻酸钠为原材料,将一定的海藻酸钠粉末溶解在去离子水溶液中,恒温加热,磁力搅拌机搅拌均匀,配置成海藻酸钠溶液;
步骤2:在步骤1中的海藻酸钠溶液放一定量的铁屑;
步骤3:再将铝粉加入上述海藻酸钠溶液中,超声振动搅拌均匀;
步骤4:上述海藻酸钠溶液中匀速滴加氯化钙,可做成任意形状的海藻酸钙凝胶;
步骤5:取出透明海藻酸钙水凝胶,浸泡在AlCl3溶液中,2h以上,变成白色凝胶即可;
步骤6:取出白色Fe/Al凝胶复合材料,换取蒸馏水,并继续密封静置保存,水浴,保证水凝胶内部高含水率,即可得到Fe/Al凝胶复合电极材料;
Fe/Al凝胶复合电极材料有以下技术优势:
1.本方法使用的是广泛的废金属,变废为宝,节能降耗,充分节省资源。
2.在处理过程中多种作用同时并存,所以能同时去除多种污染物。在使用Fe/Al复合凝胶电极电絮凝处理废水时,产生四种效应,即电解氧化,电解还原,电解絮凝,电解吸附,兼具电氧化、电还原、气浮、絮凝、吸附等多种作用,这种多功能性使电絮凝技术具有广泛的选择性,在许多方面可以发挥作用。
3.能够吸附废水中的重金属,有时可发生氯化还原反应,使毒物降解、转化。
4.电解应用范围广,对水质没有特别要求。
5.电极制作操作简单,无二次污染,不需添加氧化剂还原剂絮凝剂,是环境友好性材料。
6.吸附性凝胶包围铁屑和铝,铁屑和铝做阳极防止电解过程中钝化膜生成。
7.使废水中有机物更好的附着到电极表面,充分氧化还原,减少传质对流,极大地增加了电极与水体以及污染物的接触面积和接触时间。
8.我国饮用水卫生标准规定,水中铁含量不超过0.3mg/L,铝含量不超过0.2mg/L,通过海藻酸铝絮凝去除。
通过本方法处理废水,化学需氧量去除率至少85%,色度去除率达到99%。
附图说明
图1新型Fe/Al复合凝胶电极平面示意图
图2新型Fe/Al复合凝胶电极与铁板的COD去除率图
图3新型Fe/Al复合凝胶电极颜色去除率图
具体实施方式
下面结合附图说明和实施例是对本发明的进一步说明。
以下各个实施例,采用的高色度模拟废水:
实施例1
一种Fe-Al复合凝胶电极材料的制备方法,包括具体以下步骤:
步骤1:是以海藻酸钠为原材料,将一定的海藻酸钠粉末溶解在去离子水溶液中,恒温加热,磁力搅拌机搅拌均匀,配置成海藻酸钠溶液;
步骤2:在步骤1中的海藻酸钠溶液放5%-80%的铁屑;
步骤3:再将铝粉加入上述海藻酸钠溶液中,超声振动搅拌均匀;
步骤4:上述海藻酸钠溶液中匀速滴加氯化钙,使海藻酸钠溶液变成透明海藻酸钙水凝胶;
步骤5:取出透明海藻酸钙水凝胶,浸泡在含Al离子溶液中,1小时-96小时,变成白色凝胶即可;
步骤6:取出白色Fe/Al凝胶复合材料,换取蒸馏水,并继续密封静置保存,水浴,保证水凝胶内部高含水率,即可得到Fe/Al凝胶复合电极材料;
实施例2
铁板电极材料
验证实验
有机染料茜素红300mg/L的脱色
电极池中加入有机染料茜素红500mL,以实施例1中的凝胶电极做阳极,钛板做阴极进行电解实验。每隔5min取水样,用紫外分光光度法测定浓度,及重铬酸钾法测定COD。30min后,测定结果如附图2和图3。
Claims (4)
1.一种Fe/Al复合凝胶电极材料的制备方法,其特征在于,包括具体以下步骤:
步骤1:是以海藻酸钠为原材料,将一定的海藻酸钠粉末溶解在去离子水溶液中,恒温加热,磁力搅拌机搅拌均匀,配置成海藻酸钠溶液;
步骤2:在步骤1中的海藻酸钠溶液放5%-80%的铁屑;
步骤3:再将铝粉加入上述海藻酸钠溶液中,超声振动搅拌均匀;
步骤4:上述海藻酸钠溶液中匀速滴加氯化钙,使海藻酸钠溶液变成透明海藻酸钙水凝胶;
步骤5:取出透明海藻酸钙水凝胶,浸泡在含Al离子溶液中,1小时-96小时,变成白色凝胶即可;
步骤6:取出白色Fe/Al凝胶复合材料,换取蒸馏水,并继续密封静置保存,水浴,保证水凝胶内部高含水率,即可得到Fe/Al凝胶复合电极材料。
2.根据权利要求1中所述的一种Fe/Al复合凝胶电极材料的制备方法,其特征在于,步骤1中海藻酸钠浓度含量1%-10%,氯化钙浓度含量3%-20%。
3.根据权利要求1中所述的一种Fe/Al复合凝胶电极材料的制备方法,其特征在于,步骤2中在海藻酸钠溶液中放Fe,Al还原型金属物。
4.根据权利要求1中所述的一种Fe/Al复合凝胶电极材料的制备方法,其特征在于,步骤5中含铝离子溶液浓度含量1%-20%。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57200583A (en) * | 1981-06-01 | 1982-12-08 | Westinghouse Electric Corp | Electrode and manufacture |
CN104282894A (zh) * | 2013-07-08 | 2015-01-14 | 北京化工大学 | 一种多孔Si/C复合微球的制备方法 |
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JPS57200583A (en) * | 1981-06-01 | 1982-12-08 | Westinghouse Electric Corp | Electrode and manufacture |
CN104282894A (zh) * | 2013-07-08 | 2015-01-14 | 北京化工大学 | 一种多孔Si/C复合微球的制备方法 |
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---|
ACHINTYA N.BEZBARUAH ET AL: ""Entrapment of iron nanoparticles in calcium alginate beads for groundwater remediation applications"", 《JOURNAL OF HAZARDOUS MATERIALS》 * |
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