聚甲醛单宁酸树脂对水体中苯胺的动态吸附研究  

Dynamic adsorption behavior of aniline from aqueous solution on PFTR

作　　者：安丽萍[1] 巴丽思 曹健 靳利娥[1] AN Liping;BA Lisi;CAO Jian;JIN Li＇e(College of Chemistry and Chemical Engineering,Taiyuan University of Technology, Taiyuan Shanxi 03002)

机构地区：[1]太原理工大学化学化工学院,山西太原030024

出　　处：《环境污染与防治》2018年第5期533-538,共6页Environmental Pollution & Control

摘　　要：以单宁酸为原料,甲醛为交联剂制备了聚甲醛单宁酸树脂(PFTR),利用扫描电子显微镜和氮吸附仪对其表面孔径进行了表征和分析,并对模拟废水中的苯胺浓度进行了动态吸附性能研究,采用Thomas、Yoon-Nelson和BDST 3种模型对实验数据进行拟合分析,探讨PFTR对苯胺的吸附性能和原理。结果表明,PFTR表面含有丰富的孔状结构,能有效吸附水体中的苯胺。当PFTR用量为0.1g,吸附柱填充高度为1cm,流速为0.1cm/min,苯胺初始质量浓度为1 000~2 500mg/L时,其穿透时间随苯胺初始浓度的增大而提前。Thomas模型可较好地估算饱和吸附量,Yoon-Nelson和BDST模型能预测穿透时间。A poly formaldehyde tannin resin（PFTR）was prepared using formaldehyde and tannin resin as materials.The surface structure of PFTR was characterized by a scanning electron microscopy（SEM）and N2 absorption apparatus.And the dynamic adsorption performance of aniline on PFTR from aqueous solution was studied.Three models,such as Thomas,Yoon-Nelson and BDST model,were employed to fit experimental data.The results showed that PFTR had abundant surface pore structure and efficiently removed aniline from aqueous solution as an adsorbent.The increase of the initial concentration of aniline led to a decrease of breakthrough time while the concentration of aniline of 1 000-2 500 mg/L,flow rate of 0.1 mL/min,filling height of 1 cm and PFTR dosage of 0.1 g were used.For the three models,Thomas model was found suitable for forecasting the adsorption capacities;YoonNelson and BDST models could be used to predict the breakthrough time.

关 键 词：聚甲醛单宁酸树脂 苯胺 Thomas模型 Yoon-Nelson模型 BDST模型 

分 类 号：X52[环境科学与工程—环境工程]