| 聚合硅酸铝铁的带电特征及X衍射分析 |
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| 引用本文： | 时文中,李灵芝,余国忠.聚合硅酸铝铁的带电特征及X衍射分析[J].重庆环境科学,2003,25(8):7-9. |
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| 作者姓名： | 时文中 李灵芝 余国忠 |
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| 作者单位： | [1]河南省驻马店师专化学系，河南驻马店463000 [2]阿南省平顶山师专化学系，河南平顶山467002 [3]清华大学环境工程与科学系，北京100084 |
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| 摘 要： | 借助于微电泳技术研究了PSAF的带电特性，探讨了PSAF的絮凝机理，并与传统絮凝剂作了比较。结果表明：PSAF水解聚合形成物的电荷量随Al^3 ／Fe^3 摩尔比的减小以及SiO2浓度和碱化度B^ 的增大而逐渐降低，在酸性至中性范围内荷正电，在pH值大于7．5时荷负电。通过X射线衍射图谱的分析，证明在实验条件下，Al^3 、Fe^3 和SO4^2-均参与了反应，与聚硅酸形成了无定形高聚物。
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| 关 键 词： | PSAF 微电泳 X射线衍射 高聚物 |
| 文章编号： | 1001-2141(2003)08-0007-03 |
| 修稿时间： | 2002年4月27日 |
Charge Characteristics of Polysilicate Aluminium Ferric and Its Analysis with X-Ray Diffraction |
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| Shi Wenzhong ,Li Lingzhi ,Yu Guozhong.Charge Characteristics of Polysilicate Aluminium Ferric and Its Analysis with X-Ray Diffraction[J].Chongqing Environmental Science,2003,25(8):7-9. |
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| Authors: | Shi Wenzhong Li Lingzhi Yu Guozhong |
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| Institution: | Shi Wenzhong 1,Li Lingzhi 2,Yu Guozhong 3 |
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| Abstract: | With the aid of micro-electrophore technique, this paper has investigated the charge characteristics of polysilicate aluminium ferric (PSAF), its flocculation mechanism and effectiveness vs. conventional flocculants. The results have shown: the charge amount of PSAF in water solution gradually decreases with the reduction of molar rate of Al 3+ /Fe 3+ and increases of SiO_2 concentration and alkalinity B *. PSAF shows positive charge as pH falling between acidic and neutral values and negative as pH being greater than 7.5. The analysis with X-ray diffraction spectrum has given an evidence that all of Al 3+ , Fe 3+ and SO 2- _4 have taken part in the reaction and been co-polymerized with polysilicic acid, through which an amorphous polymer (PSAF) has been synthesized. |
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| Keywords: | PSAF micro-electrophore X-ray diffraction inorganic polymer |
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