Antifouling ultrafiltration membranes based on acrylic fibers waste/nanochitosan for Congo red and crystal violet removal  

作　　者：Ahmed E.Abdelhamid Salah E.Selim Gamal A.Meligi Ahmed I.Hussain Mahmoud A.Mabrouk 

机构地区：[1]Polymers and Pigments Department,National Research Center,33 El-Buhouth St.,Dokki,Giza,12622,Egypt [2]Egyptian Academy for Engineering and Advanced Technology Affiliated to Ministry of Military Production,Cairo,Egypt [3]Chemistry Department,Faculty of Science,Ain Shams University,Cairo,Egypt

出　　处：《Waste Disposal and Sustainable Energy》2024年第4期511-527,共17页废弃物处置与可持续能源(英文)

基　　金：Open access funding provided by The Science,Technology&Innovation Funding Authority(STDF)in cooperation with The Egyptian Knowledge Bank(EKB).

摘　　要：In this study,acrylic fibers waste blended with different ratios of nanochitosan(0.5%,1%,2%and 4%,in weight)were converted into antifouling ultrafiltration nanocomposite membranes using a phase separation technique for the remediation of Congo red(CR)and crystal violet(CV)dyes from water.The fabricated nanocomposite membranes were investigated using Fourier Transform Infrared(FTIR),thermal gravimetric analysis(TGA),X-ray diffraction(XRD)and scanning electron microscope(SEM).The membrane hydrophilicity was estimated using contact angle measurements,which revealed that the 4%loaded nanochitosan had the highest hydrophilicity.Additionally,the water uptake,porosity,water contact angle and water flux of the nanocomposite membranes were assessed.The membrane filtration performances were explored for the removal of CR and CV as anionic and cationic dyes,respectively,at different concentrations and various applied pressures(1 bar to 4 bar).The experimental data revealed a high rejection(R)performance for CR(R≃100%)with a high water flux of about 150 L/(m^(2)·h)to 183 L/(m^(2)·h)for the optimized membrane with 2%nanochitosan at an applied pressure of 4 bar.The rejection for CV showed a variant rejection(70%–99%)at different dye concentrations with fluxes ranging from 93.6 L/(m^(2)·h)to 149.5 L/(m^(2)·h)for the same composite membrane.The composite membrane showed enhanced flux recovery after fouling by bovine serum albumin and was resistant to widespread gram-positive(Staphylococcus aureus)bacteria.

关 键 词：Ultrafiltration membrane Acrylic fibers Nanochitosan Dye removal Phase inversion ANTIFOULING 

分 类 号：TQ028.8[化学工程] X703[环境科学与工程—环境工程]