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| 用弗雷德盐沉降去除水体中镉的絮凝形态 | |
| 引用本文： | 陆洋,周丽芸,章兴华,雷平,舒海霞,杨鸿波,朱守平.用弗雷德盐沉降去除水体中镉的絮凝形态[J].无机盐工业,2012,44(5):40-43. |
| 作者姓名： | 陆洋 周丽芸 章兴华 雷平 舒海霞 杨鸿波 朱守平 |
| 作者单位： | 1. 贵州省理化检测分析研究中心,贵州贵阳,550002 2. 贵州省环保局 3. 贵州省黔新企业集团有限公司 4. 贵州师大理化测试分析研究中心 |
| 基金项目： | 贵州省省长专项资金项目([2009]04号);贵州省高层次人才特助经费资助(TZJF[2009]18号) |
| 摘 要： | 用微/纳结构的弗雷德盐乳液作吸附-絮凝剂以絮凝法去除水体中重金属镉。结果表明,弗雷德盐絮凝沉降镉的去除率达97.8%。背散射与点能谱的研究表明,弗雷德盐在水处理过程中经历了溶解-再结晶,形成稳定性更高的六方柱形方解石和无定型氢氧化铝。水体中部分镉离子吸附或共沉淀在六方柱形方解石表面;另有部分镉离子吸附或共沉淀在水解生成的无定形氢氧化铝胶体中。XRD谱图比较证实,还有部分镉以类质同象取代方解石中的钙进入晶格。 |
| 关 键 词： | 弗雷德盐 除镉 溶解-再结晶 类质同象 絮凝形态学 |
Removal of cadmium flocculation morphology in water by sedimentation with Friedel's salt |
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| Lu Yang , Zhou Liyun , Zhang Xinghua , Lei Ping , Shu Haixia , Yang Hongbo , Zhu Shouping.Removal of cadmium flocculation morphology in water by sedimentation with Friedel's salt[J].Inorganic Chemicals Industry,2012,44(5):40-43. | |
| Authors: | Lu Yang Zhou Liyun Zhang Xinghua Lei Ping Shu Haixia Yang Hongbo Zhu Shouping |
| Affiliation: | 1.Guizhou Research Center of Physics and Chemistry Analysis,Guiyang 550002,China;2.Guizhou Administrative Bureau of Environment Protection;3.Guizhou Qianxin Enterprise Group Co.,Ltd.;4.Research Center of Physics and Chemistry Analysis,Guizhou Normal University) |
| Abstract: | Friedel′s salt emulsion with micro / nano structure was firstly used as adsorbent-flocculant to remove heavy metal cadmium from wastewater.Results showed the Friedel′s salt removal rate of cadmium was as high as 97.8%.Back eletron scattering(BEI) SEM and EDS study proved that Friedel′s salt experienced a dissolution-recrystallization process in water treatment and formed hexagonal prism-shaped calcite and amorphous aluminum hydroxide.A part of cadmium in the wastewater was absorbed or coprecipitated onto the surface of hexagonal prism-shaped calcite;another part of cadmium was absorbed or coprecipitated in the amorphous aluminum hydroxide colloid.XRD result showed there was still a small part of cadmium entered into lattices by replacing calcium in the calcite as the form of isomorphism. |
| Keywords: | Friedel′s salt removal of cadmium dissolution-recrystallization isomorphism flocculation morphology |
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