Adsorption Model of Soil Cr~(6+) by Fulvic Acid

ZHU Qi-hong; XIA Hong-xia

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Adsorption Model of Soil Cr~(6+) by Fulvic Acid

- Adsorption Model of Soil Cr~(6+) by Fulvic Acid
- Bulletin of Soiland Water Conservation Vol. 30, Issue 2, Pages: 133-137(2011)
- 作者机构：
  
  重庆文理学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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ZHU Qi-hong, XIA Hong-xia. Adsorption Model of Soil Cr~(6+) by Fulvic Acid[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 133-137.
DOI：

ZHU Qi-hong, XIA Hong-xia. Adsorption Model of Soil Cr~(6+) by Fulvic Acid[J]. Bulletin of Soiland Water Conservation, 2011, 30(2): 133-137. DOI：

摘要

在单因素实验的基础上

针对黄腐酸(FA)吸附土壤中的Cr

的研究

采用了二次回归正交旋转组合设计对其实验条件进行了优化

并建立了土壤Cr

潜在去除率(y)与FA浓度(x

)、溶液pH值(x

)、反应时间(x

)和反应温度(x

)这4个因素间的正交回归模型。从模型推知

当在FA浓度为2.11g/L

溶液pH值为5.65

反应时间为8.8h和反应温度为23.8℃时

土壤Cr

潜在去除率最大

达78.27%

验证结果表明

实验结果与模型结果较为吻合。

Abstract

Based on single factor experiments

the adsorption of Cr6+ on fulvic acid(FA) from the soil was optimized by a combination design of quadratic regression and orthogonal rotation.The quadratic orthogonal regression model of potential removal rate of Cr6+(y) as function of four variables including FA density(x1)

pH(x2)

reaction time(x3) and reaction temperature(x4) was established.As implied by the model

the rate(y) reaches its peak of 78.27%with FA density of 2.11 g/L

pH value of 5.65

reaction time of 8.8 h and reaction temperature of 23.8 ℃.This model prediction was also consistently confirmed by experiment results.

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