采用微波辅助法制备了一系列阴-阳离子表面活性剂改性坡缕石,研究了改性坡缕石对水中对苯二酚的吸附.结果表明,经阴-阳离子表面活性剂改性后的坡缕石对对苯二酚的吸附能力远大于坡缕石原土及阳离子表面活性剂改性的坡缕石.改性坡缕石对对苯二酚的最大吸附量为137.5 mg/g.等温吸附过程可以用Langmuir方程进行较好拟合,热力学函数计算表明,吸附剂对对苯二酚的吸附是自发的放热过程,吸附热和熵变分别为-93.582 kJ/mol和-299.32 J/mol·K,吸附自由能随温度的升高而增加.
Anion-cation surfactant modified palygorskite were prepared by adopting microwave assistant. The sorption property of modified palygorskite for hydroquinone in water was studied. Comparing to natural palygorskite and cation surfactant modified palygorskite, ability of adsorption of anion-cation surfactant modified palygorskite is higher in the treatment of hydroquinone. The maximum sorption capacity was 137.50 mg/g.The adsorption equilibrium is in accordance with the Langmuir isothermal adsorption equations. Thermodynamic function calculated shows that the adsorption is a spontaneous and exothermic process. Enthalpy and entropy change of the adsorption of hydroquinone are -93.582 kJ/mol and -299.32 J/(mol·K), respectively. Free energy of the adsorption increases with the increase of temperature.
参考文献
| [1] | Jianhua Huang;Xingguo Wang;Qingzhe Jin;Yuanfa Liu;Ying Wang .Removal of phenol from aqueous solution by adsorption onto OTMAC-modified attapulgite[J].Journal of Environmental Management,2007(2):229-236. |
| [2] | 查飞,常玥,吕学谦,魏玉娟.坡缕石-活性炭-壳聚糖负载环糊精对硝基苯酚的吸附性质[J].精细化工,2007(03):209-212. |
| [3] | 齐治国,史高峰,白利民.微波改性凹凸棒石黏土对废水中苯酚的吸附研究[J].非金属矿,2007(04):56-59. |
| [4] | Jianhua Huang;Yuanfa Liu;Qingzhe Jin;Xingguo Wang;Jun Yang .Adsorption studies of a water soluble dye, Reactive Red MF-3B, using sonication-surfactant-modified attapulgite clay[J].Journal of hazardous materials,2007(1/2):541-548. |
| [5] | 彭书传,王诗生,陈天虎,崔康平,庆承松,徐晓春,史晓莉.坡缕石吸附水中阳离子桃红FG染料的热力学研究[J].矿物学报,2005(02):113-117. |
| [6] | J.H. Potgieter;S.S. Potgieter-Vermaak;P.D. Kalibantonga .Heavy metals removal from solution by palygorskite clay[J].Minerals Engineering,2006(5):463-470. |
| [7] | Chen H;Wang AQ .Kinetic and isothermal studies of lead ion adsorption onto palygorskite clay[J].Journal of Colloid and Interface Science,2007(2):309-316. |
| [8] | Peng Liu;Tingmei Wang .Adsorption properties of hyperbranched aliphatic polyester grafted attapulgite towards heavy metal ions[J].Journal of hazardous materials,2007(1):75-79. |
| [9] | 薛良义,李卢,聂松平.苯酚和对苯二酚对鲫血细胞DNA损伤的研究[J].水生生物学报,2006(02):241-243. |
| [10] | 李玉标.含酚废水的处理方法[J].净水技术,2005(02):51-54. |
| [11] | Dabrowski A;Hubicki Z;Barczak M et al.Adsorption of phenolic compounds by activated carbon-a critical review[J].Chemosphere,2005,58(08):1049-1070. |
| [12] | Lizhong Zhu;Xiaogang Ren;Shaobin Yu .Use of cetyltrimethylammonium bromide-bentonite to remove organic contaminants of varying polar character from water[J].Environmental Science & Technology: ES&T,1998(21):3374-3378. |
| [13] | Zhu LZ.;Shen XY.;Chen BL. .Sorption of phenol, p-nitrophenol, and aniline to dual-cation organobentonites from water[J].Environmental Science & Technology: ES&T,2000(3):468-475. |
| [14] | Lizhong Zhu;Baoliang Chen .Sorption behavior of p-nitrophenol on the interface between anion-cation organobentonite and water[J].Environmental Science & Technology: ES&T,2000(14):2997-3002. |
| [15] | Pura S;Atun G .Enhancement of nitrophenol adsorption in the presence of anionic surfactant and the effect of the substituent position[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2005(1/3):137-144. |
| [16] | 姚文君 .叶腊石的有机活化及对对苯二酚的吸附[D].长春:吉林大学大学,2007. |
| [17] | 朱利中,苏玉红,沈学优,卢瑛莹.阴-阳离子有机膨润土协同吸附作用及其机理研究[J].中国环境科学,2001(05):408-411. |
| [18] | 刘程;李江画;刘博.表面活性剂应用手册[M].北京:化学工业出版社,2004:98-104. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%