Adsorption of iron(II) by a Nigerian brown coal

Adsorption of iron(II) by a Nigerian brown coal
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DOI：
10.1016/0016-2361(94)90042-6
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发表时间：
1994-04
期刊：
Fuel
影响因子：
7.4
通讯作者：
Christian A. Eligwe;Nereus B. Okolue
Christian A. Eligwe;Nereus B. Okolue
中科院分区：
工程技术1区
文献类型：
--
作者：
Christian A. Eligwe;Nereus B. Okolue

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研究了不同溶液条件下尼日利亚褐煤对铁（II）的吸附动力学和机理。脱矿褐煤对Fe（II）的初始吸附速率与溶液中Fe（II）的浓度成一级关系。吸附过程表现为Langmuir行为，吸附自由能为- 5.98 kJ mol - 1。从这一观察和解吸试验的结果可以得出结论，吸附过程是化学性质的。
The kinetics and mechanism of iron(II) adsorption on a Nigerian brown coal were investigated under various solution conditions. The initial rate of Fe(II) adsorption on demineralized brown coal is first-order with respect to its concentration in solution. The adsorption process exhibits Langmuir behaviour and the free energy of adsorption is −5.98 kJ mol−1. From this observation and the results of desorption tests, it is concluded that the adsorption process is chemical in nature.