Chemical Engineering

Sridhar Viamajala

Professor

sridhar

CV
Laboratory website coming soon

Education
2003 Ph.D. Chemical Engineering, Washington State University
1997 B.Tech (Hons) Chemical Engineering, Indian Institute of Technology, Kharagpur

Research and Teaching Interests

(1) Algal biofuels and issues related to:

  • Quantifying phototrophic growth and lipid-accumulation kinetics as they are influenced by simultaneous interactions between light (quality and irradiance), carbon dioxide concentrations, pH, temperature and nutrients;
  • strategies for economical downstream conversion of algal lipids to biodiesel (fatty acid alkyl esters); and,
  • influence of nutrient (C, N and P) speciation on algal growth and lipid content.

(2) Lignocellulose-derived biofuels and issues related to:

  • enzymatic digestion at high solid concentrations; and,
  • carbonic acid pretreatment.
Patents
  1. Alipour S, Li B, Varanasi S, Relue P, and Viamajala S. New methods for high yield production of furans from biomass sugars at mild operating conditions. US Serial No. 61/898,889 filed November 1, 2013.
  2. Shao H, Vadlamani A, Viamajala S, Varanasi S, Relue P. 2013. Enzymatic digestion of microalgal biomass for lipid, sugar and protein recovery. US Serial No.: 61/877,497 filed September 13, 2013
  3. Maddi B.; Viamajala, S.; Varanasi, S. 2011. Thermal Fractionation of biomass of non-lignocellulosic origin for multiple high-quality biofuels (US Patent Pending) #13/294510.
  4. Viamajala S, Nelson D, Sims RC. 2010. Transesterified lipid recovery and methods thereof. WO2011100563-A2; 18 Aug 2011 C12P-007/64 201157. (Patent Pending)
  5. Yamamoto K., Viamajala S., Varanasi S., Nguyen K., Abel G., Mudiyanselage A. Y., Cross Metathesis Approach to C12 and C13 Fatty-Chain Amino Esters from Oleic Acid Derivatives, (US Patent Pending) #1-56166/D2014-06
  6. Yamamoto K., Viamajala S., Varanasi S., Nguyen K., Mudiyanselage A. Y Ring Closing Metathesis Approach To Produce Precursors Of Nylon 11, 12, And 13 From Oleic Acid (US Patent Pending)
Research Funding
  1. Viamajala S, Varanasi S, Gerlach R, Characklis W, Hamud I, Johnson R, Fields M, Peyton B. “Integration of Nutrient and Water Recycling for Sustainable Algal Biorefineries.” Funded by the US Department of Energy, Office of the Biomass Program. Collaborating Institutions – The University of Toledo, Montana State University, University of North Carolina, City of Logan (Environmental Department) and Advanced Algae Solutions, LLC. Lead Institution – The University of Toledo. Total project award: $2,999,934. UT award: $1,140,508. Role: Project PI. September 2012. (Duration – 3 yrs)
  2. Viamajala S, Gerlach R, Characklis W, Varanasi S, Yamamoto K, Fields M, Peyton B. “SEP Collaborative: Alkaliphilic microalgae-based sustainable & scalable processes for renewable fuels and products.” Funded by the National Science Foundation’s (NSF) Sustainable Energy Pathways (SEP) Program. Collaborating Institutions – The University of Toledo, Montana State University and University of North Carolina. Lead Institution – University of Toledo. Total project award: $1,900,000. UT award: $950,000. Role: Project PI. August 2012. (Duration – 4 yrs)
  3. Viamajala S, Varanasi S, Yamamoto K, Isailovic D. “Interdisciplinary Research Initiative Grant.” Funded by the University of Toledo. UT award: $100,000. Role: Project PI. May 2012. (Duration – 1 yr)
  4. Bayless D, Viamajala S, Stuart B, Varanasi S et al. “Center for Algal Engineering Research and Commercialization.” Funded by the Ohio Third Frontier’s Wright Project program. Collaborating Institutions – Ohio University and The University of Toledo. Lead Institution: Ohio University. Total project award: $2,970,063. UT award: $1,027,061; Role: PI for UT award and project co-I. May 2010. (Duration – 3 yrs)
  5. Viamajala S. “Nutrient utilization by algal strains from Lake Erie”. Funded by the Air Force Research Office (AFRO) and subcontracted through the Center for Innovative Food Technologies, Toledo, Ohio. UT award: $45,700. Role: Project PI. July 2010 (Duration – 1 yr)
  6. Varanasi S, Lapitsky Y, Viamajala S, Anderson J, Schall C. “MRI-R2: Acquisition of a suite of analytical instrumentation essential for investigating fuel, chemical and polymer production from biomass.”, Funded by the NSF Division of Chemical, Bioengineering, Environmental, and Transport Systems (CBET) Major Research Instrumentation (MRI) program. UT award: $992,690. Role: co-I. April 2010 (Duration – 3 yrs)
  7. Viamajala S, Wood B, Sims RC, Ban H. “Effects of flue gas on algal growth and lipid production.” Funded by the US Department of Energy, National Energy Technology Laboratory and subcontracted through Arizona Public Service. USU award: $105,837. Role: Project PI. April 2009 (Duration – 1 yr).
  8. Peyton BM, Viamajala S, Cooksey K, Fields M, Seefeldt L, Barney B. “Extremophilic microalgae: Advanced lipid and biomass production for biofuels and bioproducts.” Funded by the US Department of Energy, Office of the Biomass Program. Collaborating Institutions – Montana State University and Utah State University. Lead Institution – Montana State University. Total project award: $900,583. USU award: $445,260. Role: PI for USU award and project co-I. September 2008. (Duration – 3 yrs)
  9. Sims RC, Viamajala S, Hansen C, Miller C. “Biological phosphorus removal combined with bio-energy production research.” Funded by the City of Logan Environmental Department. USU award: $199,964. Role: co-I. September 2008. (Duration – 2 yrs).
  10. Muhs J, Wood B, Viamajala S, Seefeldt L. “Developing methods of producing jet fuel using algae rather than from fossil fuels.” Funded by US Department of Defense - DARPA (Defense Advanced Research Projects Agency) and subcontracted through General Atomics. USU award: $785,000. Role: co-I. August 2008. (Duration – 1yr).

Publications
Google Scholar

Contact Information
Email: sridhar.viamajala@utoledo.edu
Phone: (419) 530-8094
Mailing address:
The University of Toledo
Department of Chemical Engineering (MS 305)
2801 W. Bancroft St.
Toledo, OH 43606-3390
Physical address:
Office: Nitschke Hall room 3060
1610 N. Westwood Ave.
Toledo, OH 43606-3390

Last Updated: 6/27/22