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首页> 外文期刊>International Journal of Environmental Research and Public Health >Cr(VI) Sorption/Desorption on Pine Sawdust and Oak Wood Ash
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Cr(VI) Sorption/Desorption on Pine Sawdust and Oak Wood Ash

机译：Cr（VI）在松木屑和橡木灰上的吸附/解吸

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摘要

The objective of this work was to study Cr(VI) sorption/desorption on two by-products from the wood industry: pine sawdust and oak wood ash. The retention/release experiments were carried out using standard batch-type trials. In the sorption-phase experiments, pine sawdust showed 23% sorption when a concentration of 100 mg Cr(VI)?L?1 was added, whereas sorption on oak wood ash was 17%. In the desorption-phase, chromium release was clearly higher from pine sawdust than from oak wood ash (98% and 66%, respectively). Sorption curves were well fitted to the Freundlich and Lineal models. In view of the results, both materials can be considered of very limited value to remove Cr from polluted soil and water, which can be of relevance regarding its appropriate use as biosorbents and recycled by-products.
机译：这项工作的目的是研究木材工业中的两种副产品（松木屑和橡木灰）对Cr（VI）的吸附/解吸。保留/释放实验使用标准的分批试验进行。在吸附阶段的实验中，当添加浓度为100 mg Cr（VI）？L？1时，松木屑显示出23％的吸附，而在橡木灰上的吸附为17％。在解吸阶段，松木屑中的铬释放量明显高于橡木灰中的铬释放量（分别为98％和66％）。吸附曲线非常适合Freundlich和Lineal模型。鉴于结果，两种材料都可以认为从污染的土壤和水中去除Cr的价值非常有限，这与将其适当用作生物吸附剂和回收副产品有关。

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