A new type of Salix pasmmophila powder (SPP)/polyvinyl alcohol (PVA) hydrogel composite membrane (SPPM) was synthesized by wet spinning.The effects of coagulation bath time and H2SO4 concentration on the adsorption capacity and mechanical properties of Hg2+ adsorbed by SPPM were studied.The structure and adsorption mechanism of SPPM were analyzed by SEM,specific surface area and average pore size,FT-IR and XRD,and analyzed the thermal properties of SPPM by TG.The results shown that when the coagulation bath time was 1 hour and the concentration of H2SO4 was 7%,the adsorption capacity was 421mg/g.SPPM had good pore structure,good adsorption performance and can be reused for more than 5 times,and had large specific surface area and good thermal stability.The Hg2+ adsorption process of SPPM accord with pseudo-second-order kinetic model and Freundlich isotherm model.
[1] Natasha,Muhammad S,Sana K,et al.A critical review of mercury speciation,bioavailability,toxicity and detoxification in soil-plant environment:ecotoxicology and health risk assessment[J].Science of the Total Environment,2019,711:134749-134835.
[2] Esrafili L,Gharib M,Morsali A.The targeted design of dual-functional metal-organic frameworks (DF-MOFs) as highly efficient adsorbents for Hg2+ ions:synthesis for purpose[J].Royal SOC Chemstry,2019,48(48):17831-17839.
[3] Schartup A T,Qureshi A,Dassuncao C,et al.A model for methylmercury uptake and trophic transfer by marine plankton[J].Environmental Science Technology,2017,52(2):654-662.
[4] Gao X P,Li M Y,Zhao Y M,et al.Mechanistic study of selective adsorption of Hg2+ ion byporous alginate beads[J].Chemical Engineering Journal,2019,378:122096-122107.
[5] 贾艳萍,张真,佟泽为,等.铁碳微电解处理印染废水的效能及机理研究[J].化工学报,2019,71(4):1791-1801.
[6] Mireztky P,Fernandez Cirelli A.Hg(Ⅱ) removal from water by chitosan and chitosan derivatives:a review[J].Journal of Hazardous Materials,2009,167(1-3):10-23.
[7] Hinterding Som,Berends A C,Kuettepeli M,et al.Tailoring Cu+ for Ga3+ cation exchange in Cu2-xS and CuInS2 nanocrystals by controlling the Ga precursor chemistry[J].ACS Nano,2019,13(11):12880-12893.
[8] 于长江,王苗,董心雨,等.海藻酸钙@FeO/生物碳磁性复合材料的制备及其对Co(Ⅱ)的吸附性能和机制[J].复合材料学报,2018,35(6):1549-1557.
[9] 谢水波,罗景阳,刘清,等.羟乙基纤维素/海藻酸钠复合膜对六价铀的吸附性能及吸附机制[J].复合材料学报,2015,32(1):268-275.
[10] 扈佳琪,王丽.羧甲基沙柳木粉负载纳米零价铁吸附水中Pb2+[J].精细化工,2018,35(7):1227-1233,1239.
[11] Mussana H,Yang X,Tessima M,et al.Preparation of lignocellulose aerogels from cotton stalks in the ionic liquid-based co-solvent system[J].Industrial Crops and Products,2018,113:225-233.
[12] Xu J K,Hou H J,Liu B C,et al.The integration of different pretreatments and ionic liquid processing of eucalyptus:hemicellulosic products and regenerated cellulose fibers[J].Industrial Crops and Products,2017,101:11-22.
[13] Seo P N,Han S Y,Park C W,et al.Preparation and characterization of electrospun composite nanofibers from poly(vinyl alcohol)/lignocellulose nanofibrils with different[J].Chemical Compositions,2019,14(3):5764-5776.
[14] Lee Y J,Lee S J,Jeong S W,et al.Structure and mechanical properties of regenerated cellulose fibers wet-spun from ionic liquid/cosolvent systems[J].Fibers and Polymers,2019,20(3):501-511.
[15] Deng S F,Cheng J,Guo X J,et al.Fiber spinning of polyacrylonitrile grafted soy protein in an ionic liquid/DMSO mixture solvent[J].Journal of Polymers and the Environment,2014,22(1):17-26.
[16] 王薪薪,周清,张晓春,等.离子液体[Mmim][DMP]与DMSO/乙腈二元体系的密度和黏度[J].化工学报,2020,71(1):177-191.
[17] Andanson J M,Bordes E,Devemy J,et al.Understanding the role of co-solvents in the dissolution of cellulose in ionic liquids[J].Green Chemistry,2014,16(5):2528-2538.
[18] Qiu C B,Zhu K K,Zhou X,et al.Influences of coagulation conditions on the structure and properties of regenerated cellulose filaments via wet-spinning in LiOH/urea solvent[J].ACS Sustainable Chemistry and Engineering,2018,6(3):4056-4067.
[19] Li M S,Zhang W,Zhou S Y,et al.Preparation of poly(vinyl alcohol)/palygorskite-poly (ionic liquids) hybrid catalytic membranes to facilitate esterification[J].Separation and Purification Technology,2019,230:115746-115755.
[20] Demir H,Top A,Balkose D.Dye adsorption behavior of Luffa cylindrica fibers[J].Journal of Hazardous Materials,2008,153(1-2):389-397.
[21] 林春香,詹怀宇,刘明华,等.球形纤维素吸附剂对Cu2+的吸附动力学与热力学研究[J].离子交换与吸附,2010,26(3):226-238.
[22] Langmuir I.Adsorption of gases on plain surfaces of glass,mica and platinum[J].Journal of American Chemistry Society,1918,40(12):1361-403.
[23] Freundlich H M F.Uberdie adsorption in lasungen[J].Physical Chemistry Periodical,1906,62(5):385-470.
[24] 包维维.吸附材料的制备及其对重金属离子和染料吸附性能研究[D].长春:吉林大学,2013.
[25] Kononenko N,Nikonenko V,Grande D,et al.Porous structure of ion exchange membranes investigated by various techniques[J].Advances in Colloid and Interface Science,2017,246:196-216.
[26] Evgenios K,Konstantinos S,Margaritis K,et al.Cadmium,mercury,and nickel adsorption by tetravalent manganese feroxyhyte:selectivity,kinetic modeling,and thermodynamic study[J].Environmental Science and Pollution Research International,2018,25(13):12263-12273.
[27] 叶满辉,王丽,杜慧琴.聚天冬氨酸/木质纤维素水凝胶对Pb2+的吸附和解吸性能[J].高分子材料科学与工程,2016,32(11):63-69.
[28] 曹延娟,辛斌杰,张杰,等.天然纤维素/聚丙烯腈抗菌纳米纤维的制备与表征[J].复合材料学报,2015,32(4):1042-1052.
[29] Xiong Bi,Zhao Pingping,Cai Ping.NMR spectroscopic studies on the mechanism of cellulose in alkali solutions[J].Cellulose,2013,20(2):613-621.
[30] 刘雪梅,马闯,陶嘉熙.草酸改性甘蔗渣炭的制备及其对Cr(Ⅵ)的吸附特性[J].生物质化学工程,2019,53(4):37-44.
[31] 姚进,李知函,史军华,等.油茶壳中纳米纤维素的分离及成膜特性[J].精细化工,2018,35(11):1853-1858.
[32] 周可可,唐亚丽,卢立新,等.氧化纳米纤维素增强再生纤维素全纤维素复合薄膜的制备及性能[J].复合材料学报,2020,37(7):1657-1666.
[33] 付菁菁,何春霞,常萧楠,等.麦秸秆/聚丙烯发泡复合材料的热稳定性与微观结构[J].复合材料学报,2016,33(3):469-476.
[34] Wichaita W,Samart C,Yoosuk B,et al.Cellulose graft poly(acrylic acid) and polyacrylamide:grafting efficiency and heavy metal adsorption performance[J].Macromolecular Symposia,2015,354(1):84-90.
基金资助
内蒙古自治区科学技术厅计划项目(2019GG018)
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