摘要:十溴联苯醚作为一种高效果的具有不添加型的阻燃剂,在塑料和橡胶改性行业有着十分广泛应用,但其难降解性也给环境带来了十分大的害处。
纳米铁材料在最近几年,越来越在土壤有机物污染领域体现其重要性和高效的处理效率。由于其表面积大,反应活性高等特点,纳米零价铁在农田土壤有机物污染修复中具有显著成效和广泛的应用前景。58080
纳米零价铁作为一种高效的环境修复材料,在生态环境保护和污染控制中起到了很大的作用。它拥有外部积大,灵活性高的特点。近年来的研究表明,纳米零价铁对类似有机物的去除具有重要的作用和广范的运用前竟。
碳微球是一种被应用较多的功能材料,它具有多孔、高比表面积的物理特性以及高温强还原性的化学性质使得其在众多领域有着广泛的应用。因此,利用碳微球作为零价铁的载体的同时,可以将炭微球作为制备零价铁的还原剂。这种负载形式的零价铁(纳米级别),可以有效地防止纳米零价铁的团聚,使颗粒尺寸尽可能小。
本课题主要考虑的是纳米零价铁对模拟农田土壤中的BDE-209(十溴联苯醚)的去除率的影响。
毕业论文关键词: 纳米零价铁;十溴联苯醚;炭微球
Carbon microspheres supported nano zero valent iron to remove the soil decaBDE
Abstract: As an efficient additive flame retardant,decabromodiphenyl ether(DBDE) is widely used in plastics and rubber modified industry , but it is difficult to environmental degradation brought very great harm. played a significant roleenvironmental protection and pollution control . It has a large surface area and high reactivity. Recent studies showed that Nanoscale zero valent iron has a significant effect and broad application prospects in the removal of organic compounds similar.
Carbon microspheres is a function of the material to be used more often, it has aporous, high surface area of the physical characteristics of high-temperature strength and reducing chemical properties make it in many areas has been widely used. So, we carbonmicrospherescanused as a zero-valent iron carrier, while it can also be the reductant forpreparationof zero-valent iron . This supported nano zero valent iron can effectively prevent the agglomeration of nano zero valent iron and makes the size of the particles as small as possible. Research isof simulation in water and soil decabromodiphenyl ether.
Keywords:Nanoscale zero valentiron(Nzvi),decabromodiphenylether(DBDE),Carbon microspheres
目录
1.绪论 1
1.1农田土壤有机污染治理对策 1
1.1.1 从源头进行治理 1
1.1.2 异位修复和原位修复 1
1.2课题研究目的 3
1.3课题研究的理论意义 4
1.4课题创新点 5
2.课题综述 5
2.1十溴联苯醚的基本性质 5
2.2 十溴联苯醚的污染现状 7
2.2.1 土壤中十溴联苯醚的污染状况 7
2.3 十溴联苯醚的污染修复方法 7
2.3.1 光降解 7
2.3.2 生物降解 8
2.3.3 水热反应 8
2.3.4 电解和催化加氢 8
2.4 纳米零价铁技术的发展与应用 农田土壤中有机物的修复方案试验:http://www.youerw.com/huaxue/lunwen_63018.html