TY - JOUR
T1 - Study on membrane performance in vapor permeation of VOC/N2 mixtures via modified constant volume/variable pressure method
AU - Yang, Wenchao
AU - Zhou, Haoli
AU - Zong, Chuanxin
AU - Li, Yuxue
AU - Jin, Wanqin
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/7/12
Y1 - 2018/7/12
N2 - Condensation of VOCs in VOC-enriched permeate streams at room temperature in membrane-based VOC/N2 separation make accurate measurement of membrane separation performance difficult. Membrane performance is important for obtaining fundamental data for industrial applications. Therefore, in this work, a modified constant volume/variable pressure method was developed to avoid the effects of VOC condensation in the permeate and to accurately determine membrane performance for the separation of VOC/N2 mixtures. Development of the method is discussed and validated by measuring the separation performances of p-xylene/N2 mixtures using a PDMS/ceramic composite membrane, which showed good reliability. Effects of feed concentration, feed flow rate, and temperature on separation performance were investigated by this method for the separation of representative VOC pollutants such as acetone, p-xylene, ethanol, and ethyl acetate. The permeabilities of VOC and N2 and their interaction was easily obtained, which open the possibility of the investigation of the interactions between VOC and N2 during vapor permeation.
AB - Condensation of VOCs in VOC-enriched permeate streams at room temperature in membrane-based VOC/N2 separation make accurate measurement of membrane separation performance difficult. Membrane performance is important for obtaining fundamental data for industrial applications. Therefore, in this work, a modified constant volume/variable pressure method was developed to avoid the effects of VOC condensation in the permeate and to accurately determine membrane performance for the separation of VOC/N2 mixtures. Development of the method is discussed and validated by measuring the separation performances of p-xylene/N2 mixtures using a PDMS/ceramic composite membrane, which showed good reliability. Effects of feed concentration, feed flow rate, and temperature on separation performance were investigated by this method for the separation of representative VOC pollutants such as acetone, p-xylene, ethanol, and ethyl acetate. The permeabilities of VOC and N2 and their interaction was easily obtained, which open the possibility of the investigation of the interactions between VOC and N2 during vapor permeation.
KW - Constant volume/variable pressure method
KW - PDMS membrane
KW - Vapor permeation
KW - Volatile organic compounds
UR - http://www.scopus.com/inward/record.url?scp=85042691741&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2018.02.044
DO - 10.1016/j.seppur.2018.02.044
M3 - 文章
AN - SCOPUS:85042691741
SN - 1383-5866
VL - 200
SP - 273
EP - 283
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -