β-环糊精碳材料吸附处理苯酚污水的研究

Adsorption Treatment of Phenol Wastewater by β-Cyclodextrin Carbon Material

采用β-环糊精作为原料,磷酸为活化剂制备β-环糊精碳材料,考查了单因素条件(活化温度、活化时间、浸渍比)对制备的碳材料产品性能的影响,得到了磷酸活化法制备活性炭的最佳工艺条件,即浸渍比为1∶2,时间为3 h,温度为500℃,测定最佳工艺条件下β-环糊精碳材料对苯酚溶液的吸附性能,考查了单因素条件(初始浓度、吸附时间、投炭量)对碳材料吸附苯酚的影响,得到了β-环糊精碳材料吸附苯酚的三个最佳优化条件,即苯酚溶液初始浓度40 mg·L^(-1),吸附时间30 min,投碳量0.09 g。磷酸活化法制备β-环糊精碳材料的工艺过程及其吸附性能的研究,为苯酚污水的预处理和实现水资源的循环利用有一定的借鉴意义。

Theβ-cyclodextrin carbon materials were prepared by usingβ-cyclodextrin as the raw material and phosphoric acid as the activator.The effects of single-factor conditions(activation temperature,activation time,and impregnation ratio)on the product properties of the prepared carbon materials were investigated.The optimal process conditions for the preparation of activated carbon by the phosphoric acid activation method were obtained,i.e.,the impregnation ratio of 1∶2,the time of 3 h,and the temperature of 500℃.The carbon material was adsorbed to the phenol solution under the optimal process conditions.The adsorption performance ofβ-cyclodextrin carbon materials on phenol solution under the optimal process conditions was determined,and the effects of one-factor conditions(initial concentration,adsorption time,and amount of carbon injected)on the adsorption of phenol by the carbon materials were investigated,and three optimal optimization conditions for the adsorption of phenol byβ-cyclodextrin carbon materials were obtained,i.e,an initial concentration of 40 mg·L^(-1)of phenol solution,an adsorption time of 30 min,and an amount of carbon injected of 0.09 g.Phosphoric acid activation method for the process of preparingβ-cyclodextrin carbon material and its adsorption performance can be a practical reference for the pretreatment of phenol wastewater to realize the recycling of water resources.