为了开发低成本、环境友好的吸附材料用于吸附、分离水中的染料离子,在均相体系中,以纤维素为基材、过硫酸钾为引发剂、甲基丙烯酸缩水甘油酯(GMA)为接枝单体,制备了纤维素接枝共聚物Cell-g-PGMA,并通过FT-IR、XRD和TGA对接枝共聚物进行了表征。系统研究了接枝时间、温度、单体用量和引发剂用量对接枝率的影响。同时在不同吸附时间、温度、吸附剂用量和初始浓度下考察了Cell-g-PGMA对亚甲基蓝(MB)离子的吸附性能。研究表明,该吸附剂对MB表现出优异的吸附性能,理论最大吸附量为271.39mg/g,吸附过程符合准二级动力学模型和Langmuir吸附等温线。
To develop the low-cost and environmentally friendly adsorbents for the adsorption and separation of dye ions from wastewater,cellulose graft copolymers (Cell-g-PGMA) were prepared in the homogeneous system using cellulose as the substrate,potassium persulfate as the initiator and glycidyl methacrylate (GMA) as the monomer.The graft copolymers were characterized by FT-IR,XRD and TGA.Meanwhile,the effects of grafting time,temperature,the amount of monomer and initiator on the grafting rate were systematically studied.Moreover,the adsorption performance of Cell-g-PGMA toward methylene blue (MB) was investigated at different adsorption times,temperatures,the adsorbent dosages and initial MB concentrations.The results indicated that as-prepared Cell-g-PGMA exhibited excellent adsorption performance for MB with a theoretical maximum adsorption capacity of 271.39mg/g.The adsorption behavior was well fitted to the pseudo-second-order kinetic model and the Langmuir adsorption model.
[1] Santoso E,Ediati R,Kusumawati Y,et al.Review on recent advances of carbon based adsorbent for methylene blue removal from waste water[J].Materials Today Chemistry,2020,16:100233-100254.
[2] Yang Y,He W,Chen F,et al.Water footprint assessment of silk apparel in China[J].Journal of Cleaner Production,2020,260:121050-121060.
[3] Oz M,Lorke D E,Petroianu G A.Methylene blue and Alzheimer's disease[J].Biochemical Pharmacology,2009,78(8):927-932.
[4] Takács E,Wojnárovits L,Koczog Horváth É,et al.Improvement of pesticide adsorption capacity of cellulose fibre by high-energy irradiation-initiated grafting of glycidyl methacrylate[J].Radiation Physics and Chemistry,2012,81(9):1389-1392.
[5] Tang E,Du K,Feng X,et al.Controlled synthesis of cellulose-graft-poly[2-(diethylamino)-ethyl methacrylate] by ATRP in ionic liquid [AMIM]Cl and its pH-responsive property[J].European Polymer Journal,2015,66:228-235.
[6] Zhou C,Wang Y.Recycling of waste cotton fabrics into regenerated cellulose films through three solvent systems:a comparison study[J].Journal of Applied Polymer Science,2021,138(48):51255-51265.
[7] Guo L,Li D,Lennholm H,et al.Structural and functional modification of cellulose nanofibrils using graft copolymerization with glycidyl methacrylate by Fe2+-thiourea dioxide-H2O2 redox system[J].Cellulose,2019,26(8):4853-4864.
[8] Coletti A,Valerio A,Vismara E.Posidonia oceanica as a renewable lignocellulosic biomass for the synthesis of cellulose acetate and glycidyl methacrylate grafted cellulose[J].Materials,2013,6(5):2043-2058.
[9] Kumar A S K,Barathi M,Puvvada S,et al.Microwave assisted preparation of glycidyl methacrylate grafted cellulose adsorbent for the effective adsorption of mercury from a coal fly ash sample[J].Journal of Environmental Chemical Engineering,2013,1(4):1359-1367.
[10] Zhang S,Yu C,Liu N,et al.Preparation of transparent anti-pollution cellulose carbamate regenerated cellulose membrane with high separation ability[J].International Journal of Biological Macromolecules,2019,139:332-341.
[11] Tyagi C,Tomar L K,Singh H.Surface modification of cellulose filter paper by glycidyl methacrylate grafting for biomolecule immobilization:influence of grafting parameters and urease immobilization[J].Journal of Applied Polymer Science,2009,111(3):1381-1390.
[12] Swatloski R P,Spear S K,Holbrey J D,et al.Dissolution of cellose with ionic liquids[J].Journal of the American Chemical Society,2002,124(18):4974-4975.
[13] Thakur S,Arotiba O.Synthesis,characterization and adsorption studies of an acrylic acid-grafted sodium alginate-based TiO2 hydrogel nanocomposite[J].Adsorption Science & Technology,2017,36(1-2):458-477.
[14] Sharma R K,Kumar R.Functionalized cellulose with hydroxyethyl methacrylate and glycidyl methacrylate for metal ions and dye adsorption applications[J].International Journal of Biological Macromolecules,2019,134:704-721.
[15] Madrid J F,Abad L V.Modification of microcrystalline cellulose by gamma radiation-induced grafting[J].Radiation Physics and Chemistry,2015,115:143-147.
[16] Lavanya R,Gomathi T,Vijayalakshmi K,et al.Adsorptive removal of copper(Ⅱ) and lead(Ⅱ) using chitosan-g-maleic anhydride-g-methacrylic acid copolymer[J].International Journal of Biological Macromolecules,2017,104:1495-1508.
[17] Sharma R K,Kumar R,Singh A P.Metal ions and organic dyes sorption applications of cellulose grafted with binary vinyl monomers[J].Separation and Purification Technology,2019,209:684-697.
[18] Donia A M,Atia A A,Abouzayed F I.Preparation and characterization of nano-magnetic cellulose with fast kinetic properties towards the adsorption of some metal ions[J].Chemical Engineering Journal,2012,191:22-30.
[19] Anirudhan T S,Shainy F,Deepa J R.Effective removal of Cobalt(Ⅱ) ions from aqueous solutions and nuclear industry wastewater using sulfhydryl and carboxyl functionalised magnetite nanocellulose composite:batch adsorption studies[J].Chemistry and Ecology,2019,35(3):235-255.
[20] Crini G,Peindy H N,Gimbert F,et al.Removal of C.I.Basic Green 4 (Malachite Green) from aqueous solutions by adsorption using cyclodextrin-based adsorbent:kinetic and equilibrium studies[J].Separation and Purification Technology,2007,53(1):97-110.
[21] Kumar R,Sharma R K,Singh A P.Grafting of cellulose with N-isopropylacrylamide and glycidyl methacrylate for efficient removal of Ni(Ⅱ),Cu(Ⅱ) and Pd(Ⅱ) ions from aqueous solution[J].Separation and Purification Technology,2019,219:249-259.
基金资助
国家自然科学基金项目(11965015);内蒙古自治区高等学校青年科技英才支持计划资助(NJYT22072);内蒙古科技大学优秀青年基金项目(2019YQL05);内蒙古科技大学基本科研业务费专项资金;“草原英才”工程专项经费
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