水溶液中新生态MnO<sub>2</sub>对苯酚的吸附作用

<P>ZHANG Lizhu; MA Jun; CHEN Zhonglin; YU Min</P>

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水溶液中新生态MnO₂对苯酚的吸附作用

更新时间：2025-12-10

- 水溶液中新生态MnO₂对苯酚的吸附作用
- CIESC Journal Issue 12, (2006)
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- Online First：25 December 2006，
  
  Published：25 December 2006
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ZHANG Lizhu, MA Jun, CHEN Zhonglin, et al. 水溶液中新生态MnO₂对苯酚的吸附作用[J]. CIESC Journal, 2006, (12).
DOI：

ZHANG Lizhu, MA Jun, CHEN Zhonglin, et al. 水溶液中新生态MnO₂对苯酚的吸附作用[J]. CIESC Journal, 2006, (12).
DOI：

摘要

研究了新生态MnO2对水溶液中苯酚的吸附作用.对一些影响因素，如pH、高价正离子Al3+和高价负离子PO3-4进行了考察，并探讨了反应机理.实验结果表明，新生态MnO2对苯酚的吸附等温线为“S”形，对苯酚的吸附过程包括表面吸附和孔内扩散两部分.pH在6～9的范围内，随pH升高苯酚吸附量下降，但变化不大;当pH≥10时，苯酚去除率几乎降为零.少量铝离子有利于苯酚的吸附.因为铝离子吸附在新生态MnO2表面，改变了新生态MnO2的表面性质，有利于苯酚的吸附.磷酸根离子极易与苯酚络合而带负电荷，不利于新生态MnO2对苯酚的吸附.

Abstract

The effects of pH

Al3+ and PO3-4 on the adsorption of phenol by MnO2 formed in situ were studied in aqueous solution.The behavior and adsorption mechanism were investigated.The adsorption isotherm was of “S” shape.The adsorption process of phenol on MnO2 formed in situ was divided into adsorption on the external surface of MnO2 formed in situ and diffusion to the interior of MnO2.Phenol adsorption capacity decreased slightly with increasing pH in the range of 6—9，but declined to nearly zero at pH≥10.The presence of a small amount of aluminum ion adsorbed onto the oxide surface changed the surface characteristics

which promoted the adsorption of phenol.Phosphate inhibited the adsorption of phenol by forming a negatively charged complex with phenol.

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水溶液中新生态MnO2对苯酚的吸附作用

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水溶液中新生态MnO₂对苯酚的吸附作用