TY - JOUR
T1 - Removal of dye waste by weak cation-exchange nanofiber membrane immobilized with waste egg white proteins
AU - Pakalapati, Harshini
AU - Show, Pau Loke
AU - Chang, Jen Hong
AU - Liu, Bing Lan
AU - Chang, Yu Kaung
N1 - Funding Information:
YKC gratefully acknowledges the financial support provided by the Ministry of Science and Technology of Taiwan (Grant numbers: MOST 106-2622-E-131-005-CC3 and MOST 107-2622-E-131-004-CC3 ).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2020/12/15
Y1 - 2020/12/15
N2 - In this research, a protein nanofiber membrane (P-COOH-CEW) was developed to treat the dye waste. Initially, polyacrylonitrile nanofiber membrane (PAN) was prepared by electrospinning, followed by heat treatment, alkaline treatment, and neutralization to obtain weak cation exchange nanofiber membrane (P-COOH). The P-COOH membrane was chemically coated with chicken egg white (CEW) proteins to obtain a 3D structure of complex protein nanofiber membrane (P-COOH-CEW). The composite prepared was characterized with Fourier Transform Infrared analysis (FTIR), Scanning Electron Microscopy (SEM), and thermogravimetric analysis (TGA). Further, the composite was evaluated by investigating the removal of Toluidine Blue O (TBO) from aqueous solutions in batch conditions. Different operating parameters - coupling of CEW, shaking rate, initial pH, contact time, temperature, and dye concentration were studied. From the results, maximum removal capacity and equilibrium association constant was determined to be 546.24 mg/g and 10.18 mg/mg, respectively at pH 10 and 298 K. The experimental data were well fitted to pseudo-second order model. Furthermore, desorption studies revealed that the adsorbed TBO can be completely eluted by using 50% ethanol or 50% glycerol in 1 M NaCl solution. Additionally, the reuse of P-COOH-CEW membrane reported to have 97.32% of removal efficiency after five consecutive adsorption/desorption cycles.
AB - In this research, a protein nanofiber membrane (P-COOH-CEW) was developed to treat the dye waste. Initially, polyacrylonitrile nanofiber membrane (PAN) was prepared by electrospinning, followed by heat treatment, alkaline treatment, and neutralization to obtain weak cation exchange nanofiber membrane (P-COOH). The P-COOH membrane was chemically coated with chicken egg white (CEW) proteins to obtain a 3D structure of complex protein nanofiber membrane (P-COOH-CEW). The composite prepared was characterized with Fourier Transform Infrared analysis (FTIR), Scanning Electron Microscopy (SEM), and thermogravimetric analysis (TGA). Further, the composite was evaluated by investigating the removal of Toluidine Blue O (TBO) from aqueous solutions in batch conditions. Different operating parameters - coupling of CEW, shaking rate, initial pH, contact time, temperature, and dye concentration were studied. From the results, maximum removal capacity and equilibrium association constant was determined to be 546.24 mg/g and 10.18 mg/mg, respectively at pH 10 and 298 K. The experimental data were well fitted to pseudo-second order model. Furthermore, desorption studies revealed that the adsorbed TBO can be completely eluted by using 50% ethanol or 50% glycerol in 1 M NaCl solution. Additionally, the reuse of P-COOH-CEW membrane reported to have 97.32% of removal efficiency after five consecutive adsorption/desorption cycles.
KW - Chicken egg white proteins
KW - Dye removal
KW - Immobilization
KW - Nanofiber membrane
UR - http://www.scopus.com/inward/record.url?scp=85094614716&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2020.10.099
DO - 10.1016/j.ijbiomac.2020.10.099
M3 - Article
C2 - 33736272
AN - SCOPUS:85094614716
SN - 0141-8130
VL - 165
SP - 2494
EP - 2507
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -