| 靳廷甲,章祥林,徐 建.Fe3O4/黄腐酸复合材料的制备及其对Cu2+吸附性能研究[J].安徽建筑大学学报,2015,23(3):87-93 |
| Fe3O4/黄腐酸复合材料的制备及其对Cu2+吸附性能研究 |
| Preparation and Adsorption Properties of Fe3O4/Fulvic Acid Composite Materials for of Cu(II) ions Removal |
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| DOI：10.11921/j.issn.2095-8382.20150318 |
| 中文关键词: Fe3O4 黄腐酸 Cu2+ 吸附 磁分离 |
| 英文关键词: Fe3O4 ,Fulvic acid ,Cu2+,Adsorption , Magnetic separation |
| 基金项目:安徽省长三角联合科技攻关项目（1101c0603053） |
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| 摘要点击次数: 23251 |
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| 中文摘要: |
| 采用化学共沉淀法合成了一种黄腐酸（Fulvic acid，FA）包覆型磁性复合材料（Fe3O4/FA）。扫描电镜（SEM），粉末X射线衍射（XRD）和傅里叶变换红外光谱（FT-IR）测试表明合成产物颗粒大小约2μm，具有典型的反尖晶石结构，黄腐酸成功包覆在Fe3O4颗粒表面。Fe3O4/FA在外界低磁场作用下两分钟内便可从水溶液分离。Fe3O4/FA对Cu2+的吸附是一个假二级动力学过程，在1h左右达到平衡，较好的符合Langmuir吸附模型.在pH=7时最大吸附量可以达到9.38mg/g，和Fe3O4相比其对Cu2+的吸附能力显著增强。Fe3O4/FA可以作为一种有效去除重金属污染废水中Cu2+的吸附材料。 |
| 英文摘要: |
| Fulvic acid-coated Fe3O4 (Fe3O4/FA) magnetic composite materials were prepared with chemical coprecipitation method. SEM, XRD and FT-IR test showed that the size of the product was about 2μm. The Fe3O4/FA had a typical inverse spinel structure and successfully coated with fulvic acid on its surface. Fe3O4/FA could be separated from water with low magnetic field within two minutes. The procedure of Fe3O4/FA adsorbing Cu2+ was a pseudo second-rate kinetic process.Sorption of Cu2+ to Fe3O4/FA reached equilibrium in about 1h and agreed well to the Langmuir adsorption model. The max adsorbing capacity could reach 9.38 mg/g at the pH=7. Fe3O4/FA had significant adsorption ability compared with pure Fe3O4. Fe3O4/FA can be used as a kind of adsorption material that effectively removes Cu2+ from waste water. |
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