Design of Highly Efficient and Inexpensive Membrane Equipment as Import Substitutes for Demineralized Water Production and Hemodialysis

Students of CSIR- Indian Institute of Chemical Technology, Hyderabad Harsha Nagar including her team members M. Madhumala, Shaik Nazia, Y.V.L. Ravi Kumar won the award appreciation for developing a Design of Highly Efficient and Inexpensive Membrane Equipment as Import Substitutes for Demineralized Water Production and Hemodialysis. She carried her project under guidence of Dr. S. Sridhar.

Demineralized (DM) water has gained huge applications in various industries including hospitals, laboratory for culture preparation, cooling systems, laser cutting etc. Therefore Membrane Separations Group of IICT has designed a highly compact and low cost two stage cascaded membrane system which would produce 40-60 L/h capacity of demineralized water with a total dissolved solids (TDS) of zero ppm. The system costs Rs. 35000/- only as compared to Rs. 5 – 10 Lakhs charged by multinational companies. The unit produces demineralized water at a cost of 5 Paise per liter with a low maintenance. The another innovation reports the design of low cost spinneret for making synthetic polymeric hollow fibers having different sizes which are used for Dialysis and water purification. The spinneret consist of a bore fluid pin, the lower part of the extruder/polymer solution reservoir which is connected to venturi shape taper with varied diverging part where various concentric polymer clearance can be achieved according to the application. The detachable bore fluid pin mounting design allows hollow fibre with inner diameter ranging from 110 microns to 800 microns. Different sizes of diverging part of venturi shape of taper connected to polymer reservoir allows for the manufacture of hollow fibers having different sizes.

Dr. Francis Gurry Director General of the World Intellectual Property Organization (WIPO) honored Harsha Nagar, CSIR- Indian Institute of Chemical Technology, Hyderabad with the prestigious Gandhian Young Technological Innovation (GYTI) Appreciatipon Award at Rashtrapati Bhavan on 5th March.

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