Dr. Venkata Subbarayudu Sistla

Ph. D. (Otto von Guericke University, Magdeburg, Germany)
(Assistant Professor, Chemical Engineering)
Contact No: 0535-2704-249

Career Interests:

Separation Technology, Downstream process development, Crystallization in porous media, Hybrid separation processes.


Ph.D. in chemical and process engineering (2012)
Thesis title : Formation and Crystallization based separation of diastereomeric salts
Institute : Max Planck Institute for Dynamics of Complex Technical Systems (MPI),
Magdeburg, Germany
University : Otto von Guericke University, Magdeburg, Germany

Degree : Master of Science in Chemical and Process Engineering
University : Otto von Guericke University, Magdeburg, Germany

Bachelor Degree (2004)
Degree : Bachelor of Technology in Chemical Engineering
University : Acharya Nagarjuna University, Guntur, A.P, India

Work Experience

As a Faculty

25-04-2013- Till date: Working as an Assistant Professor in Rajiv Gandhi Institute of Petroleum Technology (RGIPT), Raebareli, U.P.
Thermodynamics, Chemical Process Technology, Unit Operations-1, Hydrocarbon Thermodynamics, Chemical Reaction Engineering, Unit Operations lab-I and II

29.08.2012 – 15.04.2013 : Worked as an Assistant Professor at R.V. College of Engineering,
Subjects taught: Process Dynamics and Control, PDC lab (Masters and bachelors)
Advanced Nanoparticle Technology, Mass Transfer lab (Bachelors).

01.05.2012 – 31.07.2012 : Worked as a Guest Scientist on the Topic ‘Membrane based Separation and Crystallization of Pharmaceutical Diastereomers’ in MPI, Magdeburg, Germany.

05.2008 – 04.2012 : Worked as a Stipendium student on the Topic ‘Formation and Crystallization based Separation of Diastereomeric salts’ in MPI, Magdeburg, Germany.

10.2006 – 03.2008 : Worked as a research assistant (HiWi) on the topic ‘Crystallization from Chiral Solvents’ in MPI, Magdeburg, Germany.

08/2003 - 04/2004 : Worked in M/S JOCIL Ltd, Guntur, A.P, India, (a soap manufacturing industry where glycerin and gasses like H2 and O2 are side products) as a part of Bachelor thesis.

27/05/03 - 24/06/03 : Industrial training was attended on the ‘Manufacturing Process of DASDA (a die intermediate) and Case study on Incineration’, in M/S Vasanth Chemicals Pvt.Ltd, Hyderabad, A.P, India.

Industrial Experience
06/2005 - 02/2006 : Worked as a Production Associate trainee in M/S Global Calcium Pvt.Ltd, Hosur, T.N, India(a bulk drug industry for various calcium related products).

Analytical Techniques Experienced

DSC, TG-DSC, 1H NMR, XRPD, HPLC, GC, FTIR, Raman Spectroscopy, Polarimeter, Turbidity probe, FBRM, Single Crystal Growth analysis microscopy, Thermal Plate microscopy, Refractometer and Density meter.

Total Publications and Conferences


  1. Sistla,V.S.,  A. Sharma., Synthesis of CaCl2.6H2O by using Phase Diagram and verification of its ability to remain as a Hexahydrate at various thermal effects, J.Alt. Ener. Sour. & Tech. 2015, 6(3): 60-71.
  2. Sistla, V. S.; von Langermann, J.; Lorenz, H.; Seidel-Morgenstern, A.: Occurrence and Consequences of Differences in the Cation/Anion-Ratios during Classical Resolution: D-/L- Serine Benzyl Ester 2,3 toluyl-D-tartrate, Cryst. Res. Tech. 2014, 49(7), 514-520.
  3. Sistla, V. S.; Lorenz, H.; Seidel-Morgenstern, A.: Crystallization based resolution process for the 2,3-dibenzyl-D/L-tartrate salts of D-/L-serine benzyl ester, Crystal Growth and Design 2013, 13(6), 2548-2556.
  4. Sistla, V. S.; von Langermann, J.; Lorenz, H.; Seidel-Morgenstern, A.:  Analysis and Comparison of Commonly Used Acidic Resolving Agents in Diastereomeric Salt Resolution – Examples for DL-Serine, Cryst. Growth Des., 2011, 11 (9), 3761–3768
  5. Sistla, V. S.; von Langermann, J.; Lorenz, H.; Seidel-Morgenstern, A. : Application of Classical resolution for Separation of DL-Serine. Chem. Eng. Tech., 2010, 33, 780-786.


Peer reviewed Conference proceedings

  1. Bijoy.K.Purohit, Sistla,V.S., Effect of Heterogeneous surface on the nucleation of Na2SO4.10H2O in aqueous solution, CHEMCON, IIT Guahati, December 2015.
  2. Sistla,V.S., Bijoy.K.Purohit., A. Sharma., Selective crystallization of Hexa and Tetra hydrates of CaCl2 in aqueous solution, INCEEE(2015), NIT Warangal, India.
  1. Sistla, V. S., H. Lorenz and A. Seidel-Morgenstern:Influence of an excess resolving agent on diastereomeric salt resolution. 18th International Workshop on Industrial Crystallization BIWIC, 07-09th Sept 2011, TU Delft, Netherlands (2011) 321-326.
  2. Sistla, V. S., J. von Langermann, H. Lorenz and A. Seidel-Morgenstern:Application of different acidic resolving agents for diastereomeric salt separation of serine. 17th International Workshop on Industrial Crystallization BIWIC, Halle (Saale), Germany (2010) 42-48.
  3. Sistla, V. S., J. von Langermann, H. Lorenz and A. Seidel-Morgenstern:Phase Diagrams of Diastereomeric Salts and Their Application. 16th International Workshop on Industrial Crystallization BIWIC, Lappeenranta, Finland (2009) 142-148.