利用固定在纳米纤维膜上的废弃蛋白质去除阳离子染料废水。
Removal of cationic dye waste by nanofiber membrane immobilized with waste proteins.
机构信息
Department of Chemical Technology and Environment, University of Technology and Education, the University of Da Nang, Da Nang City, Viet Nam; Department of Chemical Engineering/Graduate School of Biochemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City 10607, Taiwan.
Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia.
出版信息
Int J Biol Macromol. 2020 Dec 1;164:3873-3884. doi: 10.1016/j.ijbiomac.2020.09.020. Epub 2020 Sep 5.
Water pollution caused by dyes has been a serious problem affecting human health and environment. The surface of polyacrylonitrile (PAN) nanofiber membranes was modified by mild hydrolysis and coupled with bovine serum albumin (BSA) obtained from the laboratory wastes, resulting in the synthesis of P-COOH and P-COOH-BSA nanofibers. The nanofibers with specific functional groups may enhance their potential applications toward the removal of ionic dyes in wastewater. Toluidine blue O (TBO) was applied as an example of cationic dye to evaluate the removal efficiency of P-COOH-BSA nanofiber. Results showed that the equilibrium dissociation constant and maximum removal capacity were 0.48 mg/mL and 434.78 mg/g, respectively, at pH 12, where the TBO removal can be explained based on Langmuir isotherm and pseudo-second-order model. Desorption studies have shown that TBO adsorbed on P-COOH-BSA protein membrane can be completely eluted with either 1 M NaCl or 50% glycerol. The results of repeated studies indicated that after five consecutive adsorption/desorption cycles, the removal efficiency of TBO can be maintained at ~97%. P-COOH-BSA has shown to be promising adsorbent in TBO dye removal from dye wastewater.
水污染是由染料引起的，这是一个严重的问题，影响人类健康和环境。通过温和水解对聚丙烯腈（PAN）纳米纤维膜的表面进行改性，并与实验室废物中得到的牛血清白蛋白（BSA）偶联，从而合成了 P-COOH 和 P-COOH-BSA 纳米纤维。具有特定官能团的纳米纤维可能会增强其在去除废水中离子染料方面的潜在应用。甲苯胺蓝 O（TBO）被用作阳离子染料的示例，以评估 P-COOH-BSA 纳米纤维的去除效率。结果表明，在 pH 12 下，平衡离解常数和最大去除容量分别为 0.48mg/mL 和 434.78mg/g，TBO 的去除可以用 Langmuir 等温线和拟二级模型来解释。解吸研究表明，吸附在 P-COOH-BSA 蛋白质膜上的 TBO 可以用 1M NaCl 或 50%甘油完全洗脱。重复研究的结果表明，在连续五次吸附/解吸循环后，TBO 的去除效率可以保持在~97%左右。P-COOH-BSA 已被证明是从染料废水中去除 TBO 染料的一种很有前途的吸附剂。
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