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Sasidhar S Varanasi

from Bronxville, NY
Age ~69
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Also known as:
Varanasi Sasidhar, R Varanasi
Related to:
Padma Prabodh Varanasi, 65Padmini P Varanasi, 59Patty Victory, 70L V Smith, 76Monica Tighe, 65Wendy Phillipson, 34Jeremy Smith, 54
Connected to:
Gayathri Varanasi, 40Lakshmi Varanasi, 88Naga S Varanasi, 34Ravikanth Varanasi, 87Sailaja Varanasi, 44Sastry V Varanasi, 74Srikanth K Varanasi, 58Srivani Varanasi, 48Daniel E Varanauski, 62Kurt J Varaneckas, 52

Sasidhar Varanasi Phones & Addresses

  • Bronxville, NY
  • 2074 White Hall, Toledo, OH 43606
  • 7117 Cannons Park Rd, Toledo, OH 43617
  • Ottawa Hills, OH
  • 40 Second Ave #1, Pelham, NY 10803 (419) 651-0980
  • Racine, WI
  • Bellevue, WA
  • 2074 Whitehall Rd, Ottawa Hills, OH 43606

Resumes

Resumes

Sasidhar Varanasi Photo 1

Professor

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Location:
Toledo, OH
Industry:
Research
Work:
The University of Toledo
Professor
University at Buffalo 1979 - 1983
Graduate Research Assistant
Education:
University at Buffalo 1979 - 1983
Doctorates, Doctor of Philosophy, Chemical Engineering, Philosophy
Skills:
Chemical Engineering
Characterization
Materials Science
Chemistry
Spectroscopy
Nanotechnology
Uv/Vis
R&D
Nanoparticles
Science
Matlab
Hplc
Languages:
Telugu
Sasidhar Varanasi Photo 2

Professor

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Location:
Toledo, OH
Work:
The University of Toledo
Professor
Sasidhar Varanasi Photo 3

Professor At The University Of Toledo

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Position:
Professor at The University of Toledo
Location:
Toledo, Ohio Area
Industry:
Research
Work:
The University of Toledo
Professor
Sasidhar Varanasi Photo 4

Sasidhar Varanasi

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Sasidhar Varanasi Photo 5

Sasidhar Varanasi

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Publications

Us Patents

Saccharifying Cellulose

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US Patent:
7674608, Mar 9, 2010
Filed:
Feb 23, 2007
Appl. No.:
11/710357
Inventors:
Sasidhar Varanasi - Toledo OH, US
Constance Ann Schall - Sylvania OH, US
Anantharam Prasad Dadi - Toledo OH, US
Assignee:
The University of Toledo - Toledo OH
International Classification:
C12P 19/14
C12P 19/20
US Classification:
435 99, 435 96
Abstract:
Dissolution, partial dissolution or softening of cellulose in an ionic liquid (IL) and its subsequent contact with anti-solvent produces regenerated cellulose more amorphous in structure than native cellulose, which can be separated from the IL/anti-solvent mixture by mechanical means such as simple filtration or centrifugation. This altered morphology of IL-treated cellulose allows a greater number of sites for enzyme adsorption with a subsequent enhancement of its saccharification. The IL-treated cellulose exhibits significantly improved hydrolysis kinetics with optically transparent solutions formed after about two hours of reaction. This provides an opportunity for separation of products from the catalyst (enzyme) easing enzyme recovery. With an appropriate selection of enzymes, initial hydrolysis rates for IL-treated cellulose were up to two orders of magnitude greater than those of untreated cellulose. Due to the non-volatility of the IL, anti-solvent can be easily stripped from the IL/anti-solvent mixture for recovery and recycle of both the ionic liquid and anti-solvent.

Biomass Pretreatment

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US Patent:
8030030, Oct 4, 2011
Filed:
Mar 13, 2008
Appl. No.:
12/075762
Inventors:
Sasidhar Varanasi - Toledo OH, US
Constance Ann Schall - Sylvania OH, US
Anantharam Prasad Dadi - Toledo OH, US
Jared Anderson - Toledo OH, US
Kripa Rao - Toledo OH, US
Guneet Kumar - Ellicot City MD, US
Praveen Paripati - Reston VA, US
Assignee:
The University of Toledo - Toledo OH
Suganit Systems, Inc. - Reston VA
International Classification:
C12P 19/00
US Classification:
435 72, 435 41, 435200, 435209
Abstract:
A method for lignocellulose conversion to sugar with improvements in yield and rate of sugar production has been developed by using ionic liquid pretreatment. This new pretreatment strategy substantially improves the efficiency (in terms of yield and reaction rates) of saccharification of lignocellulosic biomass. Cellulose and hemicellulose, when hydrolyzed into their sugars, can be converted into ethanol fuel through well established fermentation technologies. These sugars also form the feedstocks for production of variety of chemicals and polymers. The complex structure of biomass requires proper pretreatment to enable efficient saccharification of cellulose and hemicellulose components to their constituent sugars. Current pretreatment approaches suffer from slow reaction rates of cellulose hydrolysis (by using the enzyme cellulase) and low yields.

Saccharifying Cellulose

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US Patent:
8236536, Aug 7, 2012
Filed:
Jan 13, 2010
Appl. No.:
12/687049
Inventors:
Sasidhar Varanasi - Toledo OH, US
Constance Ann Schall - Sylvania OH, US
Anantharam Prasad Dadi - Toledo OH, US
Assignee:
The University of Toledo - Toledo OH
International Classification:
C12P 7/10
C12P 19/14
C12P 19/20
US Classification:
435165, 435 96, 435 99
Abstract:
Dissolution, partial dissolution or softening of cellulose in an ionic liquid (IL) and its subsequent contact with anti-solvent produces regenerated cellulose more amorphous in structure than native cellulose, which can be separated from the IL/anti-solvent mixture by mechanical means such as simple filtration or centrifugation. This altered morphology of IL-treated cellulose allows a greater number of sites for enzyme adsorption with a subsequent enhancement of its saccharification. The IL-treated cellulose exhibits significantly improved hydrolysis kinetics with optically transparent solutions formed after about two hours of reaction. This provides an opportunity for separation of products from the catalyst (enzyme) easing enzyme recovery. With an appropriate selection of enzymes, initial hydrolysis rates for IL-treated cellulose were up to two orders of magnitude greater than those of untreated cellulose. Due to the non-volatility of the IL, anti-solvent can be easily stripped from the IL/anti-solvent mixture for recovery and recycle of both the ionic liquid and anti-solvent.

Methods For Fermentation Of Xylose And Hexose Sugars

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US Patent:
8507232, Aug 13, 2013
Filed:
Jan 2, 2009
Appl. No.:
12/811288
Inventors:
Sasidhar Varanasi - Toledo OH, US
Kripa Rao - San Mateo CA, US
Patricia Ann Relue - Toledo OH, US
Dawei Yuan - Toledo OH, US
Assignee:
The University of Toledo - Toledo OH
International Classification:
C12P 7/06
US Classification:
435161
Abstract:
Methods and systems for the isomerization and fermentation of xylose and hexose sugars using an immobilized enzyme system capable of sustaining two different pH microenvironments in a single vessel are disclosed. Bilayer particles are dispersed in a mixture comprising an ionic borate source and xylose. The bilayer particles have an inner of a xylose isomerase having a pH of 6 or above, and an outer region having a second enzymatic activity at an acidic pH.

Biomass Pretreatment

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US Patent:
8546109, Oct 1, 2013
Filed:
Sep 1, 2011
Appl. No.:
13/224141
Inventors:
Sasidhar Varanasi - Toledo OH, US
Constance Ann Schall - Sylvania OH, US
Anantharam Prasad Dadi - Toledo OH, US
Jared Anderson - Toledo OH, US
Kripa Rao - Toledo OH, US
Praveen Paripati - Reston VA, US
Guneet Kumar - Ellicot City MD, US
Assignee:
Suganit Systems, Inc. - Reston VA
The University of Toledo - Toledo OH
International Classification:
C12P 19/00
C13K 1/02
D21C 9/10
US Classification:
435 72, 435 41, 435200, 435209, 127 37, 536 56, 162 71, 162 72
Abstract:
The present invention relates to a method for lignocellulosic conversion to sugar using an ionic liquid pretreatment for the saccharification of lignocellulosic biomass. Thus, cellulose, hemicellulose, when hydrolyzed into their sugars, can be converted to ethanol fuel through well-established fermentation technologies. These sugars also form the feedstocks for production of a variety of chemical and polymers. The complex structure of the biomass required pretreatment to enable efficient saccharification of cellulose and hemicellulose components to their constituent sugars.

Liquid Recovery And Purification In Biomass Pretreatment Process

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US Patent:
20120298584, Nov 29, 2012
Filed:
Nov 9, 2010
Appl. No.:
13/508927
Inventors:
Glenn Lipscomb - Perrysburg OH, US
Sasidhar Varanasi - Toledo OH, US
Assignee:
UNIVERSITY OF TOLEDO - TOLEDO OH
International Classification:
B01D 61/14
C25B 7/00
B01D 43/00
B01D 61/02
B82Y 99/00
B82Y 30/00
US Classification:
210652, 210806, 210650, 204518, 977902, 977781
Abstract:
The invention includes a process for recovering the liquids used in pretreatment of biomass for production of bio-fuels and other biomass based products. Liquid recovery and purifications minimizes waste production and enhances process profitability.

Aldose-Ketose Transformation For Separation And/Or Chemical Conversion Of C6 And C5 Sugars From Biomass Materials

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US Patent:
20130074397, Mar 28, 2013
Filed:
Apr 19, 2011
Appl. No.:
13/641849
Inventors:
Sasidhar Varanasi - Toledo OH, US
Patricia Relue - Toledo OH, US
Bin Li - Toledo OH, US
Assignee:
UNIVERSITY OF TOLEDO - Toledo OH
International Classification:
B01J 19/00
US Classification:
44313, 127 1, 4352891
Abstract:
Systems for converting aldose sugars to ketose sugars and separating and/or concentrating these sugars using differences in the sugars' abilities to bind to specific affinity ligands are described.

Ionic Liquid Recovery And Purification In Biomass Treatment Processes

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US Patent:
20130292331, Nov 7, 2013
Filed:
Nov 9, 2011
Appl. No.:
13/884460
Inventors:
Glenn Lipscomb - Perrysburg OH, US
Sasidhar Varanasi - Toledo OH, US
Praveen Paripati - Reston VA, US
Anantharam P. Dadi - Toledo OH, US
Assignee:
THE UNIVERSITY OF TOLEDO - Toledo OH
SUGANIT SYSTEMS, INC. - Reston VA
International Classification:
B01D 61/58
US Classification:
210640, 210641
Abstract:
The invention includes a process for recovering ionic liquids used in the treatment of biomass for production of biofuels and other biomass-based products. Ionic liquid recovery and purification minimizes waste production and enhances process profitability.
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Sasidhar S Varanasi from Bronxville, NY, age ~69 Get Report