Abstract
Response surface methodology was applied for modeling and optimization of direct contact membrane distillation (DCMD) for water desalination with PVDF hollow fiber membrane. The optimization objectives included average permeate flux, water productivity per unit volume of module, water production per unit energy consumption, and a comprehensive index to find out a balance among high water flux, high production, and low energy consumption. Effects of both operating parameters and configuration parameters of membrane module, including inlet temperatures of feed and permeate, flow velocity of feed solution, module packing density, and length-diameter ratio of module, on the objectives were investigated. The models for predicting the objectives were developed and statistically validated by analysis of variance. The binary interaction effects of the variables on the objectives were illustrated and discussed. All of the objectives were significantly influenced by the interaction effects of the variables. Under the optimum conditions, 67.1kg/(m2·h) average permeate flux, 4.9825×104kg/(m3·h) water productivity per unit volume of module, 2.1839×10−4kg/kJ water production per unit energy consumption, and comprehensive index of 0.7587 were obtained within investigated experimental range. The experimental and predicted results are in good agreement confirming the validity of the models.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.