Dr. V. N. Lad Assistant Professor Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology – Surat, Surat - 395007, Gujarat, India. Tel: ++91-261-2201684 E-mail: vnl@ched.svnit.ac.in

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Area of Interest

►    Colloidal & Interfacial Engineering

► Microfluidics,  Thin Film

► Rheology of Complex Fluids

► Fuel Cell and Electrochemical Engineering

►     Advanced Materials

► Multiphase Systems

► Nanotechnology

►     Process Intensification and Environmentally Benign Process Design

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Affiliation with Professional Bodies:

w Life Member of IIChE -Indian Institute of Chemical Engineers

w Life Member of ISTE -Indian Society for Technical Education

w Life Member of ICSA – The Indian Science Congress Association

w Life Member of Indian Society for Surface Science and Technology

Selected Publications

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INTERNATIONAL JOURNALS/CONFERENCE PROCEEDINGS

• V. N. Lad and Z. V. P. Murthy, Effects of Interfacial Interactions of Solid Microparticles on the Emulsion Containing Ionic Lliquid, J. Ind. Eng. Chem. 20, 2014, 274-277.

• V. N. Lad and Z. V. P. Murthy, Rheology of Aloe Barbadensis Miller: A Naturally Available Material of High Therapeutic and Nutrient Value for Food Applications, J. Food Eng. 115, 2013, 279 – 284.

• V. N. Lad and Z. V. P. Murthy, Enhancing the Stability of Oil-in-Water Emulsions Emulsified by Coconut Milk Protein with the Application of Acoustic Cavitation, Ind. Eng. Chem. Res. 51, 2012, 4222−4229.

• V. N. Lad and Z. V. P. Murthy, Alteration of Interfacial Stability of Oil-In-water Emulsions Using Bio-Derived Additives, J. Dispersion Sci. Technol. 34, 2013, 78-83.

• V. N. Lad, Controlling Volatile Organic Compounds Emissions from Chemical Process Industries for Sustainable Development, Proc. Int. Conf. Chemical and Environmental Sciences (ICCES’2012), Planetary Scientific Research Centre, 2012,136-138.

· Z.V.P. Murthy and V. N. Lad, Recent Inventions in Powder Technology and Granular Science Incorporating Improved Drug Delivery, Recent Patents on Engineering, 2, 2008, 21-27.

· V. N. Lad, Thin Film Technology for Solar Energy Applications, Renewable Energy and Environment for Sustainable Development,  Proc. Renewable Energy Asia 2008-An Int. Conf. & 4th SEE Forum Meeting, Narosa Publishing House, 2008, 491-498.

· V. N. Lad, Adhesion Characteristics of Thin Film on Surfaces, Innovations in Composites for the New Century, Proc. Int. and INCCOM-6 Conf. Future Trends in Composite Materials and Processing, Anamaya Publishers, 2007, 1013-1015.

· V. N. Lad and Z.V.P. Murthy, Role of Rheology for Environmental Applications, Proc. Int. Conf. Environmental Management: Scenario and Strategies to 2020, 2007, 91-93.

· V. N. Lad, Pollution Prevention: Don’t Neglect It, Chem. Eng.109, 2002, 59-63.

NATIONAL

· V. N. Lad, Pick of the Litter: Atypical Fluidization, Chem. Eng. World 43,  2008, 74-80.

· V. N. Lad, Self Assembly System: An Emerging Technology, Chem. Products Finder 23, 2005, 44-48.

· Z. V. P. Murthy and V. N. Lad, Non-Conventional Techniques to Remove Heavy Metals from Wastewaters, Beverage & Food World 31, 2004, 26-29.

Book Chapter

· V. N. Lad and Z. V. P. Murthy, Natural Materials as Additives in Food Emulsions, In Novel Approaches of Nanotechnology in Food, Nanotechnology in the Agree-Food Industry, Vol. 1, Ed. A. M. Grumezescu, Academic Press, Elsevier, 97-132, 2016.

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Talks/Lectures Delivered

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• Keynote speech on ‘Interfacial Engineering and its Applications in Chemical Engineering’, 3^rd Afro-Asian International Conference on Science, Engineering & Technology, Government Engineering College – Bharuch, 2015.

• ‘Stability of Emulsions: Effects of Ultrasound and Ingredients’, during a National Level Technical Event ‘Azeotrope 15’, Government Engineering College, Bharuch, 2015.

· ‘Interfacial Rheology and Engineering of Soft Materials’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· ‘Interaction Forces in Colloidal Systems’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· ‘Surface Energetics, Adhesion, Wetting, and Spreading of Liquid Films and Droplets ’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· ‘Surface Patterning and its Applications’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· ‘Electrohydrodynamic Instabilities in Viscoelastic Films’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· ‘Stability of Emulsions and Complex Systems: Role of Interfacial Engineering’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· ‘Interfacial Engineering for Biomimetic Systems’, TEQIP-II sponsored short term training programme on ‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, SVNIT, 2015.

· Interfacial Engineering and Stability of Nanoparticles, AICTE Sponsored one week Short Term Training Programme on ‘Nanotechnology: Current Research Scenario’, SVNIT, 2010.

· Perspectives of Interfacial Science in Nanoparticle Synthesis, AICTE Sponsored one week Short Term Training Programme on ‘Nanotechnology: Current Research Scenario’, SVNIT, 2010.

· Nanotechnology in Drug Delivery. AICTE Sponsored one week Short Term Training Programme on ‘Nanotechnology: Current Research Scenario’, SVNIT, 2010.

· nanofluidics, AICTE Sponsored one week Short Term Training Programme on ‘Nanotechnology: Current Research Scenario’, SVNIT, 2010.

· The Rudiments of Nanotechnology, AICTE Sponsored one week Short Term Training programme on ‘Nanotechnology: A Sustainable Alternative to Environment’, SVNIT, 2009.

· Microfluidics to Nanofluidics, AICTE Sponsored one week Short Term Training programme on ‘Nanotechnology: A Sustainable Alternative to Environment’, SVNIT, 2009.

· The Role of Interfacial Engineering in Nanoparticle Synthesis, AICTE Sponsored one week Short Term Training programme on ‘Nanotechnology: A Sustainable Alternative to Environment’, SVNIT, 2009.

· Liquid Nanojets, AICTE Sponsored one week Short Term Training programme on ‘Nanotechnology: A Sustainable Alternative to Environment’, SVNIT, 2009.

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Selected Presentations

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International Conferences/Symposia

• V. N. Lad and Z. V. P. Murthy, Effects of Bio-derived Additives on Properties of Oil-in-Water Emulsions, International Symposium on ‘Colloids and Materials 2011’, Amsterdam, The Netherlands, 2011.

• V. N. Lad, Applications of Novel Biomimetic Coatings in Bio-Medical Engineering, 8^th Asian Bio-Ceramic Symposium, Indian Institute of Technology – Madras, Chennai, 2008

National Conferences

• V. N. Lad, Flow Behavior in Tortuous Microchannels, 66^th Annual Indian Chemical Engineering Congress, CHEMCON – 2013, Mumbai, 2013.

• V. N. Lad   and   P. A. Parikh, Environmental Effects of Emissions from Aircrafts, Rail & Marine Engines, CHEMCON – 2007, Kolkata, 2007.

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STTP/Schools/Workshops/Conferences Organized

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· Coordinator

‘Interfacial Engineering and Nanotechnology for Sustainable Environment’, TEQIP-II sponsored one week Short Term Training Programme, 2015.

· Coordinator

‘Syllabus Revision Workshop for B. Tech. Chemical Engineering’ – TEQIP-II sponsored one day workshop, 2014.

· Coordinator

‘Expectations of Deliverables by Industries from Young Graduate Chemical Engineers’ – TEQIP-II sponsored one day workshop, 2014.

· Coordinator

‘Nanotechnology: Current Research Scenario’, AICTE Sponsored one week Short Term Training Programme, 2010.

· Coordinator

‘Nanotechnology: A Sustainable Alternative to Environment’, AICTE Sponsored one week Short Term Training Programme 2009.

           Talks by Speakers/Guests   invited during the programme

                            Mr. Neelamkumar Valecha – Sr. Executive Vice President, Reliance Industries Ltd., Hazira     Key Note Speaker.

                            Dr. Pankaj Poddar – Staff Scientist, National Chemical Laboratory, Pune

                            Dr. Ajay Kumar – Head (R & D), Reliance Technology Group, Reliance Vadodara manufacturing facility, Vadodara

                            Dr. Tarashankar Mahata – Scientific Officer F, Bhabha Atomic Research Centre (BARC), Mumbai

                            Dr. V. K. Gupta – Head (R & D), Reliance Industries Ltd., Hazira

 Dr. Anil Roy- Asst. Professor, DAIICT, Gandhinagar

· Coordinator

National Conference on Emerging Trends in Chemical Engineering-Global Scenario (ETCE-08), SVNIT-Surat.

Talks by Speakers/Guests   invited during the programme

                           Prof. Kartic C. Khilar, Director, Institute of Petroleum Technology- Gandhinagar.         Chief Guest.

Dr. Santosh B. Noronha, Chemical Engineering Department, IIT-Bombay, Mumbai.       Key Note Speaker

                           Prof. Arabinda Tripathy, Director, Institute of Petroleum Management – Gandhinagar.   Key Note Speaker

                           Mr. R. B. Nandode, Jt. General Manager-Mechanical, Chief Quality Circle Coordinator, KRIBHCO, Hazira.  Key Note Speaker

Mr. K. S. Gandhi, Sr. Vice President- Technical Services, Reliance Industries Ltd., Hazira.

                           Mr. J. M Shah, Vice President- Technical Services, Reliance Industries Ltd., Hazira

                           Mr. D. K. Mandal, Sr. Manager – HRD, KRIBCO, Hazira. 

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Research Projects 

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Studies on Interfacial Characteristics of Liquid-Liquid System, Sponsored by GUJCOST, Principal Investigator, 2016-17.

Studies on Flow of Dispersions through Narrow Channels, Sponsored by SVNIT, Principal Investigator, 2013-14.

Studies on Shape-Profile of Liquid Droplets from Nozzle, Sponsored by SVNIT, Co-Investigator, 2007-08.

Honour/Awards, etc. 

Appreciation Gandhian Young Technological Innovation Award – 2015 received at the Rashtrapati Bhawan, New Delhi, 2015.

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ELECTIVE COURSE

Fundamentals of Colloids and Interface Science

                                                                                                                                                                                                    Scheme

B. Tech. IV (CH), Semester –VII L         T       P      C

CH-417  FUNDAMENTALS OF COLLOIDS AND INTERFACE SCIENCE 3         0         0       3

Contents:

• INTRODUCTION         

Introduction: Colloids, Colloidal systems, Thin Films, Surfaces and Interfaces, Characteristics of colloidal systems, Industrial applications.

• PHENOMENOLOGY OF COLLOIDAL MATERIALS                                   

Forces in colloidal systems, Hydrophobic interaction, Stability, Association colloids, DLVO theory, Non-DLVO forces, Brownian motion and Brownian flocculation.

• INTER-MOLECULAR AND INTER-PARTICLE FORCES   

Charge-charge interaction, Dipole-dipole interaction, Ion-dipole interaction, van der Waals interaction, Hamaker’s approach, Deryaguin’s approximation, Lifshitz continuum theory of forces between macroscopic bodies.

• SURFACTANTS, MICELLES AND SELF ASSEMBLY SYSTEMS         

Classification of surfactants, Factors affecting behavior of surfactants, Visicles, Micelles, Reverse micelles, Mixed surfactant systems, Monolayers, Bilayers, Applications.

• EMULSIONS, FOAMS AND  GELS                                                                             

Emulsions, Gels, Microemulsions, Applications. emulsion and foams. Hydrotopy: theory and applications,  Foam stability and foamability, applications

• ELECTROKINETIC  PHENOMENA                                                                              

Electroosmosis, Electrophoresis, etc.

• INTERFACES AND THIN FILMS                                                                                

Interfaces, Curved interfaces, Interfacial tension and its measurement, Thermodynamics of interfaces, Interfacial rheology,  Friction, Lubrication, Adhesion, Macromolecular Surface Films, Charged Films, and Langmuir-Blodgett Layers

• WETTING AND SPREADING 

Contact angle, Surface characteristics, Modification of wetting, Capillarity, Thermodynamics of wetting and spreading.

• SELECTED TOPICS FROM CURRENT LITERATURE                                         

BOOKS RECOMMENDED

• Miller, C. A. and Neogi, P.,“Interfacial Phenomena : Equilibrium and Dynamic Effects, 2^nd Edn., Marcel Dekker,  NY, 2007.
• Hiemenz, P. C., and Rajgopalan, R.,“Principles of Colloid and Surface Chemistry, 3^rd Edn., Marcel Dekker, NY, 1997.
• Adamson, A. W. and Gast, A., “Physical Chemistry of Surfaces”, 6^th Edn., John Wiley and Sons, NY, 1997.
• Stokes, R. J. and Evans, D.F., “Fundamentals of Interfacial Engineering, Wiley-VCH, NY, 1996.
• Slattery, J.C., Sagis, L., and Oh E.-S., “Interfacial Transport Phenomena, 2^nd Edn., Springer, NY, 2007.
• Israelachvili, J. N., “Intermolecular and Surface Forces, 3^rd Edn., Academic Press, MA, 2011.
• Edwards, D. A.,  Brenner, H., and Wasan, D.T., “Interfacial Transport Processes and Rheology, Butterworth, Heinmen, 1991.
• Hunter, R.J., "Foundations of Colloid Science", Vols. I & II, Oxford Science Publications, 1989.
• Selected Current Literature

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