Abstract

Effect of activating procedure on the physic-chemical properties and adsorption performance of activated carbon was investigated. For this, pomegranate peel was used as biomass and carbonized to prepare base material. Activating process was carried out using traditional (sulfuric acid as activating agent) and green way methods (water as activating agent). SEM, FTIR and particle size analysis were conducted to characterize as-prepared biosorbents. The adsorption capacity of carbonized pomegranate peel, acid-activated carbon and water-activated carbon were measured through separation of pyridine from aqueous solution. The effect of initial concentration and solution pH was also studied for all samples. Results depicted that water activated carbon achieved maximum value of adsorption capacity among three adsorbents at the other equal conditions. Additionally, kinetic studies were conducted to find predicting model for each adsorbents. According to the results, pseudo second order model can be applied for all three kinds of biosorbents at certain adsorption conditions.

中文翻译：

---

纳米石榴皮去皮活性炭的制备及表征

摘要

研究了活化步骤对活性炭理化性质和吸附性能的影响。为此，将石榴皮用作生物质并碳化以制备基础材料。活化过程使用传统方法（以硫酸为活化剂）和绿色方法（水为活化剂）进行。进行了SEM，FTIR和粒度分析以表征所制备的生物吸附剂。通过从水溶液中分离吡啶来测定碳化石榴皮，酸活化碳和水活化碳的吸附能力。还研究了所有样品的初始浓度和溶液pH值的影响。结果表明，在其他相同条件下，水活性炭在三种吸附剂中均达到最大吸附容量。另外，进行了动力学研究以找到每种吸附剂的预测模型。根据结果​​，伪二阶模型可以在一定的吸附条件下应用于所有三种生物吸附剂。