使用两性表面活性剂3-磺丙基十六烷基二甲基甜菜碱(HDAPS)制备了有机膨润土,并通过x射线衍射(XRD)、红外光谱(FT-IR),扫描电镜(SEM)和比表面分析(BET)对其结构进行了表征.结果表明,两性表面活性剂进入膨润土层间,增大了层间距,使膨润土的微观形貌得到改善,比表面积下降,孔径增大.加入不同改性剂添加量(nCEC)的有机膨润土对环丙沙星的吸附测试结果表明,在酸性和碱性条件下改性剂用量为0.2 CEC时吸附效果最好.环丙沙星在膨润土原土上的吸附受pH和离子强度的影响较大,在碱性条件下吸附量急剧下降,溶液中阳离子的浓度越高吸附量越小,且二价阳离子影响较大.改性后的膨润土容易分散,易于分离,吸附能力比原土提高近30％,且受pH和离子强度的影响明显小于膨润土原土.另外,改性后的膨润土对环丙沙星的吸附符合拟二级动力学模型,吸附等温线呈线性吸附.
参考文献
| [1] | K.D.Brown,J.Kulis,B.Thomson,T.H.Chapman,D.B.Mawhinneyd,Occurrence of antibiotics in hospital,residential,and dairy effluent,municipal wastewater,and the Rio Grande in New Mexico,Sci.Total Environ.,366(2-3),772(2006) |
| [2] | M.E1-Kemary,H.E1-Shamy,I.E1-Mehasseb,Photocatalytic degradation of ciprofloxacin drug in water using ZnO nanoparticles,J.Lumin.,130,2327(2010) |
| [3] | T.G.Vasconcelos,K.Kümmerer,D.M.Henriques,A.F.Martins,Ciprofloxacin in hospital effluent Degradation by ozone and photoprocesses,J.Hazard.Mater.,169,1154(2009) |
| [4] | T.A.Gad-Allah,M.E.M.Ali,M.I.Badawy,Photocatalytic oxidation of ciprofloxacin under simulated sunlight,J.Hazard.Mater.,186,751(2011) |
| [5] | S.A.C.Carabineiro,T.Thavom-Amomsri,M.F.R.Pereira,J.L.Figueiredo,Adsorption of ciprofloxacin on surface-modified carbon materials,Water Res.,45,4583(2011) |
| [6] | S.Rakshit,D.Sarkar,E.J.Elzinga,P.Punamiya,R.Datta,Mechanisms of ciprofloxacin removal by nano-sized magnetite,J.Hazard.Mater.,246-247,221(2013) |
| [7] | Q.F.Wu,Z.H.Li,H.L.Hong,K.Yin,L.Y.Tie,Adsorption and intercalation of ciprofloxacin on montmorillonite,Appl.Clay Sci.,50,204(2010) |
| [8] | X.H.Sun,W.F.Huang,Z.Y.Ma,Y.Y.Lu,X.Y.Shen,A novel approach for removing 2-naphthol from wastewater using immobilized organo-bentonite,J.Hazard.Mater.,252-253,192(2013) |
| [9] | GU Zheng,GAO Manglai,LUO Zhongxin,TAN Hui,SHU Shenbao,Preparation of bentonite modified by bis-pyridinium dibromides and its adsorption of Phenol from aqueous solution,J.Chem.Eng.Chin.Univ.,27(2),309(2013)(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,高校化学工程学报,27(2),309(2013)) |
| [10] | A.R.Tehrani-Bagha,R.G.Singh,K.Holmberg,Solubilization of two organic dyes by cationic ester-containing gemini surfactants,J.Colloid Interface Sci.,376,112(2012) |
| [11] | A.R.McLauchlin,N.L.Thomas,Preparation and characterization of organoclays based on an amphoteric surfactant,J.Colloid Interface Sci.,321,39(2008) |
| [12] | H.P.He,J.Galy,J.F.Gerard,Molecular Simulation of the Interlayer Structure and the Mobility of Alkyl Chains in HDTMA+ / Montmorillonite Hybrids,J.Phys.Chem.B,109,13301(2005) |
| [13] | S.Gammoudi,N.Frini-Srasra,E.Srasra,Influence of exchangeable cation of smectite on HDTMA adsorption equilibrium,kinetic and thermodynamic studies,Appl.Clay Sci.,69,99(2012) |
| [14] | YU Haiqin,YAN Liangguo,XIN Xiaodong,DU Bin,WEI Qin,FAN Yuhua,BI Caifeng,Synthesis and Characterization of CTMAB and PDMDAAC Modified Organobentonite,Spectrosc.Spect.Anal,31(5),1393(2011)(于海琴,闫良国,辛晓东,杜斌,魏琴,范玉华,毕彩丰,CTMAB和PDMDAAC有机改性膨润土的制备及其表征,光谱学与光谱分析,31(5),1393(2011)) |
| [15] | ZHANG Zengzhi,YANG Chunwei,XU Haifeng,NIU Junjie,Preparation and water-releasing properties of AI crosslinked bentonite composite coating,Chinese Journal of Materials Research,22(5),449(2008)(张增志,杨春卫,许海风,牛俊杰,铝交联膨润土复合涂层的制备和导水性能,材料研究学报,22(5),449(2008)) |
| [16] | LU Yipin,JIANG Miao,ZHENG Fangfang,LI Na,YANG Weiben,Adsorption behavior and mechanism of ciprofloxacin onto porous resins and carbon nanotube,CIESC Journal,63(11),3567(2012)(陆祎品,江淼,郑芳芳,李娜,杨维本,多孔树脂及碳纳米管对环丙沙星的吸附行为与机理,化工学报,63(11),3567(2012)) |
| [17] | J.S.Piccin,C.S.Gomes,L.A.Feris,M.Gutterres,Kinetics and isotherms of leather dye adsorption by tannery solid waste,Chem.Eng.J.,183,30(2012) |
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