|
|||||
|
|
| 低分子有机酸对聚合羟基铁铝-蒙脱石复合体吸附磷的影响 | |
| 引用本文： | 丁葵英,朱茂旭,董静,孙军.低分子有机酸对聚合羟基铁铝-蒙脱石复合体吸附磷的影响[J].矿物学报,2010,30(1). |
| 作者姓名： | 丁葵英 朱茂旭 董静 孙军 |
| 作者单位： | 1. 潍坊出入境检验检疫局,山东,潍坊,261041;中国海洋大学化学化工学院,山东,青岛,266100 2. 中国海洋大学化学化工学院,山东,青岛,266100 3. 潍坊出入境检验检疫局,山东,潍坊,261041 |
| 基金项目： | 土壤与农业可持续发展国家重点实验室开放基金(055111) |
| 摘 要： | 在一定条件下,利用钠基化蒙脱石(Na-Mt)合成聚合羟基铁铝-蒙脱石复合体(HyFeAl-Mt),M3+/Mt比为10mmol/g,Fe3+/Al3+摩尔比分别为0.1、0.2和0.5。研究了酸性和弱酸性条件下低分子有机酸(以柠檬酸、草酸和苹果酸为代表)及其添加顺序对HyFeAl-Mt复合体吸附磷的影响。结果表明,低分子有机酸对HyFeAl-Mt复合体吸附磷有抑制作用,且随着低分子有机酸浓度的增加愈加明显,酸性条件下的抑制作用比弱酸性条件下明显;低分子有机酸羧基个数越多、分子结构越大,对HyFeAl-Mt对吸附磷的影响越大;酸性环境中低分子有机酸与磷共存时,磷吸附曲线较好地符合Freundlich方程,且其对磷在HyFeAl-Mt0.2上的最大吸附量影响较小;磷与低分子有机酸的添加顺序不同也影响HyFeAl-Mt复合体对磷的吸附。 |
| 关 键 词： | 聚合羟基铁铝-蒙脱石 低分子有机酸 磷 竞争吸附 |
The Effect of Low Molecular Weight Organic Acids to Phosphate Adsorption by Hydroxyaluminum/Iron- Montmorillonite Complexes |
|
| DING Kui-ying,ZHU Mao-xu,DONG Jing,SUN Jun.The Effect of Low Molecular Weight Organic Acids to Phosphate Adsorption by Hydroxyaluminum/Iron- Montmorillonite Complexes[J].Acta Mineralogica Sinica,2010,30(1). | |
| Authors: | DING Kui-ying ZHU Mao-xu DONG Jing SUN Jun |
| Institution: | 1.Weifang Entry-Exit Inspection and Quantine Bureau of the People's Republic of China/a>;Weifang 261041/a>;China/a>;2.College of Chemistry and Chemical Engineering/a>;Ocean University of China/a>;Qingdao 266100/a>;China |
| Abstract: | Two hydroxyiron/aluminmum-montmorillonite complexes(HyFeAl-Mt) with different Fe:Al molar ratios were synthesized,with 0.2 and 0.5 malars of HyFeAl-Mt0.2 and HyFeAl-Mt0.5,respectively.The effects of LMWA(citric acid,oxalic acid and malic acid,as example) to phosphate adsorption by Mt complexes were investigated under weak acids and strongly acidified conditions.The added sequence of LMWA was studied.The results indicate that the effects of LMW organic acids to P adsorption were more effective in low pH than... |
| Keywords: | hydroxyaluminum/hydroxyiron-montmorillonite phosphate adsorption behavior kinetics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |