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为推动铁离子配位聚丙烯酸(PAA)纤维在染料废水处理领域的应用，利用聚乙烯醇(PVA)改性铁离子配位PAA纤维，提高其力学与耐水性能，并采用经纬编织技术以PVA改性铁离子配位PAA纤维为纬线、聚酯纤维为经线编织平纹织物，将平纹织物用作过滤介质处理亚甲基蓝(MB)水溶液，研究织物结构及其脱色MB水溶液性能，并分析其机理；为抑制过滤中铁离子的流失，纺制了具有截留铁离子功能的PVA改性PAA纤维，将其作为纬线、以聚酯纤维为经线编织新平纹织物；将2种织物简单叠加构建过滤单元，实现催化H_2O2脱色MB的同时可有效抑制铁离子流失的目标。结果表明：与铁离子配位PAA纤维相比，PVA改性铁离子配位PAA纤维的断裂强度提高了32.9%，而溶胀率降低了49.2%，为织物制备与应用提供了便利；织物具有疏松多孔结构，可作为过滤介质在重力驱动下稳定脱色MB水溶液，480 min运行期内通量为11.5 L/(m2·h)；织物中PVA改性铁离子配位PAA纤维为MB水溶液高效脱色提供活性位点，可催化H_2O2生成羟基自由基(·OH)，织物依靠·OH非选择性地氧化分解MB，致使MB脱色率达98.2%,TOC去除率达83.0%，而织物中PVA改性PAA纤维则可截留洗脱的铁离子，使过滤单元的平均铁离子浸出质量浓度仅为0.8 mg/L，提高了过滤单元的应用性能。
Abstract：In order to promote the application of iron ion-coordinated poly(acrylic acid)(PAA) fibers in the field of dye wastewater treatment, the modification of iron ion-coordinated PAA fibers with polyvinyl alcohol(PVA) was carried out to improve the mechanical and water resistance properties of resulting fibers. A weaving technique was adopted to braid a plain fabric with PVA-modified iron ion-coordinated PAA fibers as wefts and polyester fibers as warps, and the plain fabric was then used as a filtration medium to treat methylene blue(MB) aqueous solution.The structure and MB aqueous solution-decolorizing performance of the fabric as well as the decolorization mechanism of MB aqueous solution caused by the fabric were investigated in detail. In order to restrain the loss of iron ions during filtration, PVA-modified PAA fibers with the function of retaining iron ions were prepared, and a new plain fabric was then braided with PVA-modified PAA fibers as wefts and polyester fibers as warps. The two fabrics prepared above were simply superimposed to construct a filtration unit, and the filtration unit could catalyze H2 O2 to decolorize MB and simultaneously effectively restrain the loss of iron ions. The results showed that the tensile strength of PVA-modified iron ion-coordinated PAA fibers was increased by 32.9%, and its swelling ratio was decreased by 49.2% compared to those of iron ion-coordinated PAA fibers, which could create convenience for the preparation and application of fabric. The fabric has a loose and porous structure, enabling it to act as a filtration medium for the stable decolorization of MB aqueous solution under gravity-driven conditions,with a flux of 11.5 L/(m2·h) during a 480 min operation period. The PVA-modified iron ion-coordinated PAA fibers in the fabric provide active sites for the efficient decolorization of MB aqueous solution, which can catalyze H_2O2 to generate hydroxyl radicals (·OH). The fabric relies on·OH to non-selectively oxidize and decompose MB,resulting in an MB decolorization rate of 98.2% and a TOC removal rate of 83.0%. In contrast, the PVA-modified PAA fibers in the fabric can trap eluted iron ions, reducing the average iron ion leaching concentration of the filtration unit to only 0.8 mg/L and ultimately improving the application performance of the filtration unit.
[1]ZHOU H Q, JI S S, ZHANG Q Q, et al. Wastewater treatment:A universal, scalable and recyclable catalyst with adjustable activity for diverse dyes degradation[J]. Journal of Environmental Management, 2023, 330:117188.
[2]周慧敏，丁新波，刘涛，等.纤维素/MXene复合气凝胶的制备及其对亚甲基蓝的吸附机制[J].现代纺织技术，2023,31(4):93-102.ZHOU H M, DING X B, LIU T, et al. Preparation ofthe cellulose/MXene composite aerogel and its adsorption mechanism for methylene blue[J]. Advanced Textile Technology, 2023, 31(4):93-102(in Chinese).
[3]KESHTKAR VANASHI A, GHASEMZADEH H. Copper(II)containing chitosan hydrogel as a heterogeneous Fenton-like catalyst for production of hydroxyl radical:A quantitative study[J]. International Journal of Biological Macromolecules, 2022,199:348-357.
[4]MAHTAB M S, FAROOQI I H, KHURSHEED A. Zero Fenton sludge discharge:A review on reuse approach during wastewater treatment by the advanced oxidation process[J]. International Journal of Environmental Science and Technology, 2022,19(3):2265-2278.
[5]LI Y, CHEN J X, CAI P W, et al. An electrochemically neutralized energy-assisted low-cost acid-alkaline electrolyzer for energy-saving electrolysis hydrogen generation[J]. Journal of Materials Chemistry A, 2018, 6(12):4948-4954.
[6]AMELIA S, SEDIAWAN W B, PRASETYO I, et al. Role of the pore structure of Fe/C catalysts on heterogeneous Fenton oxidation[J]. Journal of Environmental Chemical Engineering,2020, 8(1):102921.
[7]JIN Q Q, KANG J, CHEN Q, et al. Efficiently enhanced Fenton-like reaction via Fe complex immobilized on silica particles for catalytic hydrogen peroxide degradation of 2, 4-dichlorophenol[J]. Applied Catalysis B:Environment and Energy,2020, 268:118453.
[8]AL-SHAMMARI A K, AL-BERMANY E. Polymer functional group impact on the thermo-mechanical properties of polyacrylic acid, polyacrylic amide-poly(vinyl alcohol)nanocomposites reinforced by graphene oxide nanosheets[J]. Journal of Polymer Research, 2022, 29(8):351.
[9]JIA L, MA J Z, GAO D G, et al. A star-shaped POSS-containing polymer for cleaner leather processing[J]. Journal of Hazardous Materials, 2019, 361:305-311.
[10]GUO J X, HANIF A, SHANG J, et al. PAA@ZIF-8 incorporated nanofibrous membrane for high-efficiency PM2.5 capture[J].Chemical Engineering Journal, 2021, 405:126584.
[11]XU N, ZHANG Y, HAN J, et al. Coordination and hydrogen bond-coadjusted highly stretchable wet-spun poly(acrylic acid)fiber and its stable activity as Fenton catalyst[J]. Materials Today Chemistry, 2022, 24:100864.
[12]ZHAN F C, YAN X X, LI J, et al. Encapsulation of tangeretin in PVA/PAA crosslinking electrospun fibers by emulsion-electrospinning:Morphology characterization, slow-release, and antioxidant activity assessment[J]. Food Chemistry , 2021 ,337:127763.
[13]AL MUNSUR A Z, GOO B H, KIM Y, et al. Nafion-based proton-exchange membranes built on cross-linked semi-interpenetrating polymer networks between poly(acrylic acid)and poly(vinyl alcohol)[J]. ACS Applied Materials&Interfaces,2021, 13(24):28188-28200.
[14]CHEN C, CHEN Y C, HONG Y T, et al. Facile fabrication of ascorbic acid reduced graphene oxide-modified electrodes toward electroanalytical determination of sulfamethoxazole in aqueous environments[J]. Chemical Engineering Journal, 2018,352:188-197.
[15]OSTERMANN M, BILOTTO P, KADLEC M, et al. L-ascorbic acid treatment of electrochemical graphene nanosheets:Reduction optimization and application for deicing, water uptake prevention, and corrosion resistance[J]. ACS Applied Materials&Interfaces, 2023, 15(18):22471-22484.
[16]XU N K, HAN J, FENG Y, et al. Polyacrylonitrile/poly(acrylic acid)layer-by-layer superimposed composite nanofiber membrane with low iron ion leaching-out and stable methylene blue-removing performance[J]. Journal of Membrane Science, 2022, 641:119935.
[17]周妍，蒋秀翔，牛建涛.基于不同结构的纬向波纹织物的设计[J].现代丝绸科学与技术，2023, 38(1):6-7.ZHOU Y, JIANG X X, NIU J T. Design of weft corrugated fabrics based on different structures[J]. Modern Silk Science Technology, 2023, 38(1):6-7(in Chinese).
[18]余雨，范海涛，王洪臣，等.滤布材质及微观结构与透水性能的关系[J].精细化工，2019, 36(6):1203-1209.YU Y, FAN H T, WANG H C, et al. Relationship between material and microstructure of filter cloth and water permeability[J]. Fine Chemicals, 2019, 36(6):1203-1209(in Chinese).
[19]CLAUSI M, SAVINO S, CANGIALOSI F, et al. Pollutants abatement in aqueous solutions with geopolymer catalysts:A photo Fenton case[J]. Chemosphere, 2023, 344:140333.
[20]BU Z Y, LI X Y, XUE Y, et al. Hydroxylamine enhanced treatment of highly salty wastewater in FeO/H2O2 system:Efficiency and mechanism study[J]. Separation and Purification Technology, 2021, 271:118847.
[21]FONTMORIN J M, BURGOS CASTILLO R C, TANG W Z, et al. Stability of 5, 5-dimethyl-1-pyrroline-N-oxide as a spintrap for quantification of hydroxyl radicals in processes based on Fenton reaction[J]. Water Research, 2016, 99:24-32.
[22]XIE A T, CUI J Y, YANG J, et al. Graphene oxide/Fe（Ⅲ）-based metal-organic framework membrane for enhanced water purification based on synergistic separation and photo-Fenton processes[J]. Applied Catalysis B:Environmental , 2020 ,264:118548.
[23]GAO Y X, YAN S M, HE Y, et al. A photo-Fenton self-cleaning membrane based on NH2-MIL-88B(Fe)and graphene oxide to improve dye removal performance[J]. Journal of Membrane Science, 2021, 626:119192.
[24]WANG T, WANG Z Y, WANG P L, et al. An integration of photo-Fenton and membrane process for water treatment by a PVDF@CuFe2O4 catalytic membrane[J]. Journal of Membrane Science, 2019, 572:419-427.
基本信息:
中图分类号:TS106;X703
引用信息:
[1]封严,李雅琪,徐乃库.PVA改性铁离子配位PAA纤维基功能织物的制备及其对亚甲基蓝的处理[J].天津工业大学学报,2025,44(06):21-30+39.
基金信息:
国家自然科学基金项目（51103100）; 国家海洋局产业链协同创新项目（BHSF2017-01）
2025-12-25
2025-12-25