In this work, desalination experiments were performed on vacuum membrane distillation (VMD). Process
parameters such as feed flow rate, vacuum degree on permeate side, feed bulk temperature and feed salt concentration were
optimized using sensitivity analysis and Taguchi method. The optimum values of process parameters were found to be 2 lpm of
feed flow rate, 60 degree Celsius of feed bulk temperature, 5.5 kPa of permeate-side pressure and 5000 ppm of salt concentration. The
permeate flux at these conditions was obtained as 26.6 kg/m2⋅hr. The rejection of salt in permeate was found to be 99.7%. The
percent contribution of various process parameters using ANOVA results indicated that the most important parameter is feed
bulk temperature with its contribution of 95%. The ANOVA results indicate that the percent contribution of permeate pressure
gets increased to 5.384% in the range of 2 to 7 kPa as compared to 0.045% in the range of 5.5 to 7 kPa.
Sushant Upadhyaya, Kailash Singh, Satyendra Prasad Chaurasia, Rakesh Baghel and Rajeev Kumar Dohare: Department of Chemical Engineering, Malaviya National Institute of Technology, Jaipur-302017, India
Jitendra Kumar Singh: Department of Chemical Engineering, JK Lakshmipat University, Jaipur-302026, India
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