Magnetic chitosan/ diatomite(Fe3O4@CS/DE) composite was prepared by solution blending,chemical crosslinking and ultrasonic dispersion.The structure and morphology of the materials were analyzed by FT-IR,SEM,XRD.Methyl orange(MO) in dye wastewater was selected as target pollutant.The effects of pH,temperature and the dosage of Fe3O4@CS/DE on methyl orange adsorption was investigated.The adsorption kinetics and isotherm type were also studied.The experimental results shown that adsorption equilibrium was reached at 100min,the adsorption capacity for methyl orange reached 3.81mg/g in 20mg/L methyl orange solution,when pH 6,temperature 30℃ and the dosage of Fe3O4@CS/DE 4g/L.The adsorption process conformed to pseudo-second-order model (R22=0.993) and freundlich isotherms adsorption model.The adsorption was related multi-site non-monolayer molecules monolayer.
[1] 孟波,郭巧霞,王凯.复合改性膨润土对亚甲基蓝的吸附性能研究[J].工业水处理,2018,38(2):35-39.
[2] Adepu A K,Goskula S,Chirra S.Magnetically separable porous titanosilicate/Fe3O4 hybrid nanocomposites with enhanced photocatalytic performance under UV light irradiation[J].Journal of Porous Materials,2019,26(5):1259-1267.
[3] 廉帅唯,王旭东,郭利妍.锐钛矿型光催化剂LaAl03制备及光催化性能研究[J].水处理技术,2020,46(1):48-53.
[4] 任逸,施梦琦,尹越.Fe2O3/MIL-53(Al)催化类芬顿氧化性能及其作用机制研究[J].环境科学学报,2019,39(8):2508-2516.
[5] 盘雨凝,帅欢,李男.纳米TiO2/硅藻土复合材料制备及亚甲基蓝降解[J].非金属矿业,2019,42(5):98-100.
[6] 颜世强,张洪才,付豪.磁性壳聚糖重金属吸附剂的制备及其吸附性能的研究[J].上海海洋大学学报,2018,27(5):739-747.
[7] 律志民,杨世民,陈磊.高性能的MOF/carbon复合材料对水溶液中铀酰的吸附[J].核化学与放射化学,2019,41(2):2-10.
[8] 谭雪云,李冰,李平.纳米轻基铁改性阳离子树脂制备及去除Cd(Ⅱ)[J].水处理技术,2019,45(6):56-61.
[9] Jodeh S,Shawahny M,Hanbali G.Efficiency of magnetic chitosan supported on graphene for removal of perchlorate ions from wastewater[J].Environmental Technology,2019,40(8):1-14.
[10] Naeimi H,Lahouti S.Magnetic nanoparticles coated with a chitosan anchored Schiff base complex of nickel(Ⅱ) as an effective,reusable catalyst for one pot synthesis of spirolactones[J].Transition Metal Chemistry,2018,43(1):221-229.
[11] Sun Lingmin,Wang Jinshu,Wu Junshu,et al.Constructing nanostructured silicates on diatomite for Pb(Ⅱ) and Cd(Ⅱ) removal[J].Journal of Materials Science,2019,54(2):6882-6894.
[12] Zhuang Shuting,Cheng Rong,Kang Mi.Kinetic and equilibrium of U(Ⅵ) adsorption onto magnetic amidoxime-functionalized chitosan beads[J].Journal of Cleaner Production,2018,188(4):655-661.
[13] Mahdavinasab M,Hamzehloueian M,Sarrafi Y.Preparation and application of magnetic chitosan/graphene oxide composite supported copper as a recyclable heterogeneous nanocatalyst in the synthesis of triazoles[J].Journal of Biological Macromolecules,2019,138(7):764-772.
[14] Ahamad T,Naushad M,Al-Shahrani T,et al.Preparation of chitosan based magnetic nanocomposite for tetracycline adsorption:kinetic and thermodynamic studies[J].International Journal of Biological Macromolecules,2020,147(1):258-267.
[15] 施周,袁明洋,杨秀贞.磁性壳聚糖改性硅藻土吸附去除水中的铅离子[J].环境工程学报,2017,11(2):787-792.
[16] 常仕博,徐星星,苏振国.基于硅藻土多孔微珠的多孔陶瓷制备及过滤性能研究[J].功能材料,2019,50(10):10195-10201.
[17] Chen Bo,Long Fengxia,Chen Sijiang.Magnetic chitosan biopolymer as a versatile adsorbent for simultaneous and synergistic removal of different sorts of dyestuffs from simulated wastewater[J].Chemical Engineering Journal,2020,385(11):1-12.
[18] 李阵群,许多,魏春艳.棉秆皮纤维素/氧化石墨烯纤维的制备及其力学性能和吸附性能[J].纺织学报,2020,41(1):15-20.
