Adsorption kinetics of o-cresol on activated carbon from palm seed coat
Adsorption kinetics of o-cresol on activated carbon from palm seed coat
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发表时间：
2000-05
影响因子：
0.5
通讯作者：
S. Rengaraj;R. Sivabalan;B. Arabindoo;V. Murugesan
中科院分区：
文献类型：
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作者：
S. Rengaraj;R. Sivabalan;B. Arabindoo;V. Murugesan
采用白云石工艺从棕榈种皮制备的活性炭在最佳条件下对水溶液中的邻甲酚去除率超过 95%。通过Freundlich吸附等温线计算的吸附容量给出了19.58mg/g的邻甲酚去除率。动力学研究表明总体速率常数随着邻甲酚浓度的增加而降低。该活性炭表现出对邻甲酚的可逆吸收，因此在从水溶液中去除/回收邻甲酚方面具有良好的应用潜力。发现薄膜扩散是速率限制步骤。采用原位化学再生技术对废碳的回收进行了研究，取得了良好的效果。
The activated carbon prepared from palm seed coat by dolomite process showed more than 95% removal of o-cresol from aqueous solution under optimum conditions. The adsorption capacity calculated by Freundlich adsorption isotherm gave 19.58 mg/g of o-cresol removal. The kinetic studies revealed the overall rate constant decrease with increasing concentration of o-cresol. The activated carbon showed reversible uptake of o-cresol and thus have a good application potential for the removal/recovery of o-cresol from aqueous solution. Film diffusion was found to be the rate limiting step. Recovery of used carbon was studied by in situ chemical regeneration technique and showed good result.