高校化学工程学报Issue(2)：309-315,7.DOI:10.3969/j.issn.1003-9015.2013.02.022
双吡啶盐改性膨润土的制备及其对苯酚的吸附性能研究
Preparation of Bentonite Modified by Bis-pyridinium Dibromides and its Adsorption of Phenol from Aqueous Solution
谷峥 1高芒来 1罗忠新 1谭会 1舒神宝1
作者信息
- 1. 中国石油大学北京 理学院 重质油国家重点实验室，北京 102249
- 折叠
摘要
Abstract
A novel organobentonite (HEMBP-B) was prepared by modifying the bentonite (B) with hexamethylene bis-pyridine dibromides (HEMBP), and its structure was characterized by XRD, BET, FT-IR and SEM. At the same time, the modification conditions were optimized. The maximum adsorbed amount and adsorption equilibrium of HEMBP on bentonite appear when during modification the dosage of pyridine cation in HEMBP is 1.0 CEC, L/S = 50 mL:1 g, t = 3 h, T = 60℃, pH = 6.26 (natural). In addition, the effects of various factors on the adsorption of phenol by HEMBP-B were studied. The results show that the removal ratio of phenol from the phenol contenting solution with original phenol concentration of 50 mg⋅L−1 can reach about 80%when the dosage of pyridine cation in the used HEMBP is 1.0 CEC, and the removing conditions are T=45℃, t = 2.5 h and pH = 6.46 (natural). Besides, it was found that the Freundlich model can describe the adsorption isotherm well. This study not only enriches the kinds of absorbent, but also provides reference for the wastewater treatment applications of clay modified by short chain pyridine salts.关键词
双吡啶盐/改性膨润土/制备/苯酚/吸附/阳离子交换容量CECKey words
bis-pyridinium/modified bentonite/preparation/phenol/adsorption/cation exchenge capacity CEC分类
化学化工引用本文复制引用
谷峥,高芒来,罗忠新,谭会,舒神宝..双吡啶盐改性膨润土的制备及其对苯酚的吸附性能研究[J].高校化学工程学报,2013,(2):309-315,7.
