TY - JOUR
T1 - Desalination and lignin concentration in a lignin aqueous solution by nano-filtration process
T2 - Advanced γ-Al2O3 film-coated porous α-Al2O3 hollow fiber membrane
AU - Zhuang, Xuelong
AU - Shin, Min Chang
AU - Jeong, Byeong Jun
AU - Hwang, Jae Yeon
AU - Choi, Young Chan
AU - Park, Jung Hoon
N1 - Publisher Copyright:
© 2022, The Korean Institute of Chemical Engineers.
PY - 2022/6
Y1 - 2022/6
N2 - To remove the main barrier for lignin valorization, which is the development of actual lignin separation technology, we studied the ceramic membrane nanofiltration process using a dense, ultra-thin γ-Al2O3 film-coated porous α-Al2O3 hollow fiber (γ α HF) membrane for the simultaneous separation of alkali metals (Na+, K+, etc) and concentration of lignin from an alkaline media like black liquor with success as an advanced wastewater treatment process. The γ-AlOOH sol was prepared by sol-gel method and coated by dip-coating on α-Al2O3 hollow fiber (α HF) support. After calcination at high temperature, the mean pore sizes of the α HF support and the γ α HF membrane were found to be 0.2 µm and 1.6 nm. The rejection rate performance for various salts increased in the following order: Na2SO44223. Under the best condition, the removal rate of sodium and potassium ions reached about 92% and 85%, respectively, with 19.34% of the lignin being discharged. The γ α HF membrane presents good performance stability during a five day nano-filtration process.
AB - To remove the main barrier for lignin valorization, which is the development of actual lignin separation technology, we studied the ceramic membrane nanofiltration process using a dense, ultra-thin γ-Al2O3 film-coated porous α-Al2O3 hollow fiber (γ α HF) membrane for the simultaneous separation of alkali metals (Na+, K+, etc) and concentration of lignin from an alkaline media like black liquor with success as an advanced wastewater treatment process. The γ-AlOOH sol was prepared by sol-gel method and coated by dip-coating on α-Al2O3 hollow fiber (α HF) support. After calcination at high temperature, the mean pore sizes of the α HF support and the γ α HF membrane were found to be 0.2 µm and 1.6 nm. The rejection rate performance for various salts increased in the following order: Na2SO44223. Under the best condition, the removal rate of sodium and potassium ions reached about 92% and 85%, respectively, with 19.34% of the lignin being discharged. The γ α HF membrane presents good performance stability during a five day nano-filtration process.
KW - Hollow Fiber Membrane
KW - Ion Removal Process
KW - Lignin Valorization
KW - Nanofiltration Membrane
KW - Wastewater Resources
UR - http://www.scopus.com/inward/record.url?scp=85127711072&partnerID=8YFLogxK
U2 - 10.1007/s11814-022-1089-0
DO - 10.1007/s11814-022-1089-0
M3 - Article
AN - SCOPUS:85127711072
SN - 0256-1115
VL - 39
SP - 1588
EP - 1596
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
IS - 6
ER -