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首页> 外文期刊>Advances in Environmental Technology >Modeling studies for adsorption of phenol and co-pollutants onto granular activated carbon prepared from olive oil industrial waste
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Modeling studies for adsorption of phenol and co-pollutants onto granular activated carbon prepared from olive oil industrial waste

机译：橄榄油工业废料制得的颗粒状活性炭上苯酚和共污染物吸附的模型研究

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Granular activated carbon (OSAC) which was derived from olive oil industrial solid waste was chemically activated with different concentrations of phosphoric acid. OSAC-materials were evaluated for their ability to remove phenol from aqueous solution in a batch technique. Adsorption isotherms were determined and modeled with five linear Langmuir forms, namely the Freundlich, Elovich, Temkin, Kiselev and Hill-de Boer models. The experimental data for the adsorption of phenol onto OSAM-materials were fitted well with the Langmuir-1 and 2, Freundlich, Kiselev and Hill-de Boer models. Adsorption was carried out on energetically different sites as localized monolayer adsorption and was an exothermic process. The uptake of phenol onto OSAC increased in the following order: OSAC-80%> OSAC-70%> OSAC-60%; the maximum adsorption capacities of phenol were found to be 114.416, 125.628 and 262.467 mg/g onto OSAC-60%, OSAC-70% and OSAC-80%, respectively. On the other hand, OSAC-80% was used as a good adsorbent for the removal of phenol and Cd2+ as co-pollutants from waste aqueous solutions. 80.25% of phenol and 50.66% of Cd2+ can be simultaneously removed by OSAC-80%.
机译：源自橄榄油工业固体废物的颗粒状活性炭（OSAC）用不同浓度的磷酸进行化学活化。以分批技术评估了OSAC材料从水溶液中去除苯酚的能力。确定了吸附等温线，并用五个线性Langmuir形式建模，即Freundlich，Elovich，Temkin，Kiselev和Hill-de Boer模型。用Langmuir-1和2，Freundlich，Kiselev和Hill-de Boer模型很好地拟合了苯酚在OSAM材料上的吸附实验数据。吸附在能量上不同的位置进行，作为局部单层吸附，并且是放热过程。 OSAC上苯酚的吸收量按以下顺序增加：OSAC-80％> OSAC-70％> OSAC-60％;苯酚在OSAC-60％，OSAC-70％和OSAC-80％上的最大吸附容量分别为114.416、125.628和262.467 mg / g。另一方面，OSAC-80％被用作良好的吸附剂，用于从废水中去除作为共污染物的苯酚和Cd2 +。 OSAC-80％可以同时去除80.25％的苯酚和50.66％的Cd2 +。

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