H D Raval

Dr. Hiren D. Raval

Principal Scientist

Academic Qualifications

Contact Details

Dr. Hiren D. Raval

Principal Scientist

hirenraval@csmcri.res.in

7690 / 2567760

  1. Ritika Sharma, Prashant Galav, Hiren D. Raval* “High performance, low-fouling nanocomposite membrane with TiO2 nanomaterial in polysulfone matrix for advanced water treatment” Journal of applied polymer science (2023) e53662.
  2. Mondal, Mrinmoy*, and Hiren D. Raval* "Removal of arsenic from water using a novel polyamide composite hollow fiber membrane by interfacial polymerization on lumen side." Journal of Environmental Chemical Engineering 10.3 (2022): 107843.
  3. Raval, Hiren D.*, et al. "Selectivity enhancement of oxidative degraded reverse osmosis membrane by chitosan–tannic acid treatment." Journal of Applied Polymer Science 139.29 (2022): e52643.
  4. Richa Modi, Ashish R. Kavaiya, Piyush B. Vanzara and Hiren D. Raval* Membranes in Zero-Liquid-Discharge Systems for Efficient Processes toward Sustainable Environment: A Review and Journal of Environmental Engineering 2022, 148(11): 03122004.
  5. Srivastava, Ashish, Mayur Raviya, and Hiren Raval* "A novel temperature-responsive mixed matrix ultrafiltration membrane based on boron nitride nanomaterial." Journal of Thermoplastic Composite Materials (2022): 08927057221079736.
  6. Srivastava, Ashish, and Hiren D. Raval*. "Investigating the role of copper and zinc oxide nanomaterials in abatement of biofouling of ultrafiltration membrane in dynamic conditions." Journal of Applied Polymer Science 139.14 (2022): 51879.
  7. Sutariya, Bhaumik*, Aabha Sargaonkar, and Hiren Raval*. "Methods of visualizing hydrodynamics and fouling in membrane filtration systems: recent trends." Separation Science and Technology (2022): 1-30.
  8. Raval, Hiren*, Niraj Jasani, and Ashish Srivastava. "Hydrophilic Surface Modification of TFC Reverse Osmosis Membrane Using Blends of Sodium Carboxymethyl Cellulose and Chitosan." Polymer-Plastics Technology and Materials (2022): 1-13.
  9. Sutariya, Bhaumik, Aabha Sargaonkar, and Hiren Raval. "Study of hydrodynamics and mass transfer in the bench-scale membrane testing devices." Chemical Engineering Journal Advances (2022): 100367.
  10. Kavaiya, Ashish R., and Hiren D. Raval*. "Highly selective and antifouling reverse osmosis membrane by crosslinkers induced surface modification." Environmental Technology 43.14 (2022): 2155-2166.
  11. Sutariya, Bhaumik*, A Sargaonkar, BK Markam, H Raval* "3D CFD study and optimisation of static mixer type feed spacer for reverse osmosis." Chemical Engineering Journal Advances (2022): 100335.
  12. Sutariya, Bhaumik*, and Hiren Raval* "Energy and resource‐efficient reverse osmosis system with tunable recovery for brackish water desalination and heavy metal removal." Water and Environment Journal (2022).
  13. Sutariya, Bhaumik*, and Hiren Raval*. "Analytical study of optimum operating conditions in semi-batch closed-circuit reverse osmosis (CCRO)." Separation and Purification Technology 264 (2021): 118421.
  14. Raviya, Mayur R., Maulik V. Gauswami, and Hiren D. Raval*. "A novel Polysulfone/Iron‐Nickel oxide nanocomposite membrane for removal of heavy metal and protein from water." Water Environment Research 92.11 (2020): 1990-1998.
  15. Raval, Hiren*, and Varun Sundarkumar. "Low‐energy reverse osmosis membrane with high boron rejection by surface modification with a polysaccharide." The Canadian Journal of Chemical Engineering 97 (2019): 1575-1580.
  16. Ankoliya, Dipak, Bhargav Mehta, and Hiren Raval*. "Advances in surface modification techniques of reverse osmosis membrane over the years." Separation Science and Technology 54.3 (2019): 293-310.
  17. Kavaiya, Ashish R., and Hiren D. Raval*. "Fouling resistant membrane tailored by polyethylene glycol in oxidative environment for desalination." Membrane Water Treatment 10.5 (2019): 381-385.
  18. Raval, H.*, et al. "A novel thin film composite reverse osmosis membrane modified by ionic liquid." Brazilian Journal of Chemical Engineering 35.4 (2018): 1249-1256.
  19. Raval, Hiren D.*, Mayur R. Raviya, and Harshad C. Rathod. "Polyamide–surfactant interaction: Exploration of new avenues for reverse osmosis separation applications." Advances in Polymer Technology 37.8 (2018): 3106-3114.
  20. Raval, Hiren D.*, Prashant Makwana, and Sandeep Sharma. "Biofouling of polysulfone and polysulfone-graphene oxide nanocomposite membrane and foulant removal." Materials Research Express 5.6 (2018): 065322.
  21. Mehta, Bhargav B., Rutvik N. Joshi, and Hiren D. Raval*. "A novel ultra‐low energy reverse osmosis membrane modified by chitosan with glutaraldehyde crosslinking." Journal of Applied Polymer Science 135.10 (2018): 45971.
  22. Samnani, Mohit, Harshad Rathod, and Hiren Raval*. "A novel reverse osmosis membrane modified by polyvinyl alcohol with maleic anhydride crosslinking." Materials Research Express 5.3 (2018): 035304.
  23. Vadodariya, Nilesh, et al. "Graded agaroses directly from seaweed biomass: A sustainable tool for developing clean chemical process." Process Biochemistry 66 (2018): 171-175.
  24. Raval, Hiren D.*, Mohit D. Samnani, and Maulik V. Gauswami. "Surface modification of thin film composite reverse osmosis membrane by glycerol assisted oxidation with sodium hypochlorite." Applied Surface Science 427 (2018): 37-44.
  25. Raval, Hiren D.*, Mayur R. Raviya, and Maulik V. Gauswami. "A novel reverse osmosis membrane by ferrous sulfate assisted controlled oxidation of polyamide layer." Materials Research Express 4.11 (2017): 115303.
  26. Raval, Hiren*, et al. "Combinatorial approach for removal of boron from water by membrane surface modification and boron complex formation." Journal of Water Process Engineering 19 (2017): 139-146.
  27. Raval, Hiren D.*, and MayurKumar D. Gondaliya. "A novel high‐flux thin film composite reverse osmosis membrane modified by polysaccharide supramolecular assembly." Journal of Applied Polymer Science 134.27 (2017): 45026.
  28. Lakshmi, D. Shanthana, et al. "Preparation and performance of biofouling resistant PAN/chitosan hollow fiber membranes." 3 Biotech 7.3 (2017): 1-13.
  29. Raval, Hiren D.*, Bhargav B. Mehta, and Rutvik N. Joshi. "A novel low-fouling zeolite-polysulfone nanocomposite membrane for advanced water treatment." Desalination and Water Treatment 88 (2017): 8-15.
  30. Raval, Hiren D.*, and Ravi Kiran Das. "A novel approach to bind graphene oxide to polyamide for making high performance Reverse Osmosis membrane." Membrane Water Treatment 8.6 (2017): 613-623.
  31. Raval, Hiren D.*, and Pratik Koradiya. "Direct fertigation with brackish water by a forward osmosis system converting domestic reverse osmosis module into forward osmosis membrane element." Desalination and Water Treatment 57.34 (2016): 15740-15747.
  32. Raval, Hiren D.*, and Subarna Maiti. "Ultra-low energy reverse osmosis with thermal energy recovery from photovoltaic panel cooling and TFC RO membrane modification." Desalination and Water Treatment 57.10 (2016): 4303-4312.
  33. Raval, Hiren D.*, and Subarna Maiti. "A Novel photovoltaic powered reverse osmosis with improved productivity of reverse osmosis and photovoltaic panel." Journal of Membrane Science and Research 1.3 (2015): 113-117.
  34. Raval, Hiren D.*, et al. "Study on removal of m-phenylenediamine from aqueous solution by adsorption over granular activated carbon." (2015).
  35. Raval, Hiren D.*, Pranav S. Rana, and Subarna Maiti. "A novel high-flux, thin-film composite reverse osmosis membrane modified by chitosan for advanced water treatment." RSC Advances 5.9 (2015): 6687-6694.
  36. Raval, Hiren D.*, Subarna Maiti, and Ashish Mittal. "Computational fluid dynamics analysis and experimental validation of improvement in overall energy efficiency of a solar photovoltaic panel by thermal energy recovery." Journal of renewable and sustainable energy 6.3 (2014): 033138.
  37. Meena, Ramavatar, et al. "Surfactant-induced coagulation of agarose from aqueous extract of Gracilaria dura seaweed as an energy-efficient alternative to the conventional freeze–thaw process." RSC Advances 4.53 (2014): 28093-28098.
  38. Raval, Hiren D.*, et al. "Rejuvenation of discarded RO membrane for new applications." Desalination and Water Treatment 48.1-3 (2012): 349-359.
  39. Rangarajan, R, et al. "Thin film composite reverse osmosis membrane development and scale up at CSMCRI, Bhavnagar." Desalination 282 (2011): 68-77.
  40. Raval, H. D.*, et al. "Flux enhancement of thin film composite RO membrane by controlled chlorine treatment." Desalination 250.3 (2010): 945-949.
  41. Raval, Hiren D.*, and Jaydev M. Gohil. "Nanotechnology in water treatment: an emerging trend." International journal of nuclear desalination 4.2 (2010): 184-188.
  42. Raval, Hiren D.*, and Jaydev M. Gohil. "Carbon nanotube membrane for water desalination." International Journal of Nuclear Desalination 3.4 (2009): 360-368.

  1. A device for reverse osmosis membrane transformation and testing Indian patent filed application no. 202211030752, Hiren Dinkarray Raval, Umang Maheshkumar Joshi, and Hardik Vinodbhai Gajjar
  2. Pharma-grade salt (NaCl) composition and its method of preparation thereof Patent filed application no. 202111045223 Alok Ranjan Paital, Arvind Kumar, Sumesh Chandra Upadhyay, Rahul Jasvantrai Sanghavi, Bipin Gordhanbhai Vyas and Hiren Dinkarray Raval

  • Raval, Hiren D., and Mrinmoy Mondal. "Polymer-based nano-enhanced reverse osmosis membranes." Advancement in Polymer-Based Membranes for Water Remediation. Elsevier, 2022. 335-379.

End-of-life Reverse Osmosis membrane rejuvenation, High recovery Reverse Osmosis system development, Membrane Systems Design, Process Engineering, Thin Film Composite RO Membrane Process, Renewable energy powered desalination, Nanocomposite membranes, Novel Membranes for Water Treatment Applications.


Having expertise in thin film composite Reverse Osmosis and ultrafiltration membrane preparation and surface modifications, membrane productivity improvement, low-fouling membrane development and membrane process development. Developed the process technology for end-of-life Reverse Osmosis membrane rejuvenation and established the pilot plant facility by a DST funded project as the principal investigator. Worked in energy efficiency improvement for solar powered desalination, forward osmosis system development, nanocomposite ultrafiltration membrane and nano-enhanced Reverse Osmosis membrane development. Led the research projects from concept to commissioning until pilot plant stage and developed the technology upto TRL level 6. Awarded the cumulative external grants of Rs. 4.51 Cr as the Principal investigator.