TY - GEN
T1 - Modeling of hollow fiber membrane module-performance in direct contact membrane distillation
AU - Mohammadi-Ghaleni, Mahdi
AU - Nejati, Siamak
PY - 2016
Y1 - 2016
N2 - We constructed a three-dimensional model to study the effect of operating conditions, and physical and geometrical parameters in a hollow fiber membrane module under Direct Contact Membrane Distillation (DCMD) operation. The normalized permeate flux was calculated for different module arrangements, various hollow fiber physical properties (e.g. length and thickness), and operating conditions. The results indicated that the permeate flux decreases when we increase the fiber length, thickness, and tortuosity. In contrast, increasing the feed velocity and temperature, and the porosity of fibers result in increased permeate flux. We found that the normalized permeate flux significantly drops once the interspacing parameter of fibers-the ratio of external radius of fibers to the center-to-center distance between neighboring fibers-approached 0.47. The temperature difference across the membrane decreases with reducing the membrane thickness; however, the effective driving force, pressure gradient over the membrane thickness, for water transport through the membrane increases.
AB - We constructed a three-dimensional model to study the effect of operating conditions, and physical and geometrical parameters in a hollow fiber membrane module under Direct Contact Membrane Distillation (DCMD) operation. The normalized permeate flux was calculated for different module arrangements, various hollow fiber physical properties (e.g. length and thickness), and operating conditions. The results indicated that the permeate flux decreases when we increase the fiber length, thickness, and tortuosity. In contrast, increasing the feed velocity and temperature, and the porosity of fibers result in increased permeate flux. We found that the normalized permeate flux significantly drops once the interspacing parameter of fibers-the ratio of external radius of fibers to the center-to-center distance between neighboring fibers-approached 0.47. The temperature difference across the membrane decreases with reducing the membrane thickness; however, the effective driving force, pressure gradient over the membrane thickness, for water transport through the membrane increases.
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M3 - Conference contribution
AN - SCOPUS:85019064022
T3 - Separations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
SP - 414
BT - Separations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
PB - AIChE
T2 - Separations Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
Y2 - 13 November 2016 through 18 November 2016
ER -