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Position: Home > Articles > Absorption Behavior of Chromium(Ⅵ) in Yellow Soils Journal of Agro-Environment Science 2003,22 (03) 333-336

黄壤对铬(Ⅵ)吸附特性的研究

作  者:
伍钧;漆辉;郭佳
单  位:
四川农业大学环境保护系
关键词:
黄壤;Cr(Ⅵ);吸附;酸度;温度
摘  要:
用振荡平衡法研究了西南地区不同母质发育的4种黄壤对Cr(Ⅵ)的吸附行为。结果表明,黄壤对Cr(Ⅵ)有明显的吸附作用,等温吸附曲线可以用Freundlich方程、Langmuir方程和Temkin方程描述。最大吸附量(M)为冰碛黄壤>玄武岩黄壤>再积黄壤>老风化壳黄壤。酸度和温度对黄壤吸附Cr(Ⅵ)均有影响。随pH值升高,吸附量下降,当pH值升高到一定时,吸附量不再有所变化;随温度升高,吸附量增大,其相关性达显著或极显著水准。
译  名:
Absorption Behavior of Chromium(Ⅵ) in Yellow Soils
作  者:
WU Jun , QI Hui , GUO Jia(Department of Environmental Protection, Sichuan Agricultural University, Ya'an 625014,China)
关键词:
yellow soil; chromium (Ⅵ ); absorption; acidity; temperature
摘  要:
Four kinds of yellow soils were studied for their chromium (Ⅵ ) absorption behavior. The results showed that chromium (Ⅵ ) absorption behavior was obvious. It has been found that the isotherms absorption curves might be expressed by Freundlich, Langmuir and Temkin equation. The maximum chromium (Ⅵ ) absorption amounts were in an order: morain yellow soil>basalt yellow soil>second amassment yellow soil>old mantlerock yellow soil. Acidity and temperature did affect the absorbing process. The chromium(Ⅵ ) absorbed amounts increased while pH value was raised. When pH value exceeded a certain limit, the chromium (Ⅵ ) absorbed amounts no longer change any more. The chromium(Ⅵ ) absorbed amounts increased while the temperature was raised and correlation on yellow soil was significant and even extremely significant.

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