摘要
在静态下 ,研究了水溶液中碳黑泥吸附铬 ( )的热力学特性 ,测定了不同温度下的吸附等温线。结果表明 :在稀溶液中吸附铬 ( )基本符合 Langmuir模型 ;由于碳黑泥的微孔结构和表面存在含氧官能团的吸附中心 ,碳黑泥吸附铬 ( )主要以 HCr O-4 形式被吸附 ,导致了水分子的脱附及 H+的产生 。
The thermodynamics characteristics of Cr(Ⅵ) adsorption from aqueous solution with carbon black slurry under static conditions was studied and the adsorption isotherm line at different temperature was determined. The results showed that the Cr(Ⅵ) adsorption in dilute solution could coincide with the Langmuir model; Cr(Ⅵ) ion is adsorbed by carbon black slurry in the form of HCrO - 4 ion, owing to porous structure of carbon black slurry and the adsorption activation center of oxygen-containing function group existed in carbon black slurry surface, the desorbing of water molecules and H + ion formation make the thermodynamics function △S 0 increasing.
出处
《水处理技术》
CAS
CSCD
北大核心
2001年第3期156-158,共3页
Technology of Water Treatment
基金
湖南省教委科技攻关项目 (E992 0 1
关键词
碳黑泥
铬
吸附热力
机理
合成氨
废水处理
Carbon black slurry
Cr(Ⅵ)
adsorption thermodynamics
mechanism
