TY - JOUR
T1 - Nanofiltration hollow fiber membranes for textile wastewater treatment
T2 - Lab-scale and pilot-scale studies
AU - Ong, Yee Kang
AU - Li, Fu Yun
AU - Sun, Shi Peng
AU - Zhao, Bai Wang
AU - Liang, Can Zeng
AU - Chung, Tai Shung
PY - 2014/7/26
Y1 - 2014/7/26
N2 - The textile industry is a water intensive industry that generates a vast amount of wastewater. The wastewater generated from the textile industry is generally loaded with pollutants comprising spent textile dyes, suspended solids, mineral oils, electrolytes, surfactants, etc. Therefore, it must be properly treated before disposal or reuse. A systematic study was conducted to evaluate the performance of newly developed polyamide-imide hollow fiber nanofiltration (NF) membrane in various operating conditions such as feed temperature (i.e., 25, 40, 50, 70°C), solute concentration (i.e., 100, 500, 1000ppm) and pH (i.e., 3, 7, 10). The results indicate that the NF membrane has satisfactory rejections (average: >90%) against various dyes at most testing conditions. In addition, more than 80% of NaCl and 90% of Na2SO4 permeate through the membrane. As a result, these salts have the potential to be be recovered and reused for the next dyeing process. The robustness of the membrane was proven by showing satisfactory and stable performance under cycles of chemical cleaning during the lab-scale and pilot-scale evaluations.
AB - The textile industry is a water intensive industry that generates a vast amount of wastewater. The wastewater generated from the textile industry is generally loaded with pollutants comprising spent textile dyes, suspended solids, mineral oils, electrolytes, surfactants, etc. Therefore, it must be properly treated before disposal or reuse. A systematic study was conducted to evaluate the performance of newly developed polyamide-imide hollow fiber nanofiltration (NF) membrane in various operating conditions such as feed temperature (i.e., 25, 40, 50, 70°C), solute concentration (i.e., 100, 500, 1000ppm) and pH (i.e., 3, 7, 10). The results indicate that the NF membrane has satisfactory rejections (average: >90%) against various dyes at most testing conditions. In addition, more than 80% of NaCl and 90% of Na2SO4 permeate through the membrane. As a result, these salts have the potential to be be recovered and reused for the next dyeing process. The robustness of the membrane was proven by showing satisfactory and stable performance under cycles of chemical cleaning during the lab-scale and pilot-scale evaluations.
KW - Chemical oxidation demand (COD)
KW - Dyes
KW - Hollow fiber membrane
KW - Nanofiltration
KW - Pilot-scale
KW - Textile wastewater
UR - http://www.scopus.com/inward/record.url?scp=84899800326&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2014.04.007
DO - 10.1016/j.ces.2014.04.007
M3 - 文章
AN - SCOPUS:84899800326
SN - 0009-2509
VL - 114
SP - 51
EP - 57
JO - Chemical Engineering Science
JF - Chemical Engineering Science
ER -