Qualification: 
Ph.D, M.Tech, BE
Email: 
s_debjyoti@blr.amrita.edu

Dr. Debjyoti Sahu serves as Assistant Professor at the department of Mechanical Engineering, Amrita School of Engineering, Bengaluru campus since June 2008. He received Ph. D. in Energy Technology from Centre for Energy, Indian Institute of Technology Guwahati. His Ph. D. thesis titled as Hydrogen Adsorption on Selected Metal Organic Frameworks.

Currently Dr. Debjyoti is working on Renewable Energy, Nanomaterial Synthesis and Refrigeration.

Qualification

YEAR DEGREE UNIVERSITY
2014 PhD Indian Institute of Technology Guwahati
2008 M.Tech. BVB College of Engineering and Technology, Visveswaraya Technological University, Belgaum
2006 B.E. Malnad College of Engineering, Visveswaraya Technological University, Belgaum

TEACHING

  • Heat Power Engineering (UG)
  • Energy Management (PG)

Professional Affiliation

  • Member: Indian Science Congress
  • Member: Institute of Engineers (India)

Publications

Publication Type: Journal Article

Year of Conference Publication Type Title

2016

Journal Article

V. Kotebavi, Shetty, D., and Dr. Debjyoti Sahu, “Performance and emission characteristics of a CI engine run on waste cooking oil-diesel blends”, Pollution Research, vol. 35, pp. 159-166, 2016.[Abstract]


Biofuels have the potential to partially replace the conventional liquid fuels as a blend used in the IC engines. Apart from several non-edible vegetable oils, waste cooking oil can also be used to produce biodiesel after simple esterification. Potassium hydroxide (KOH) and Sodium hydroxide (NaOH) are used here as reagents in the esterification of waste cooking oil. The biodiesel blends are prepared in different proportions of waste cooking oil methyl ester (WCOME) and the physical properties of these blends are studied. In this work experimental runs are carried out with different biodiesel blends (0-40%) to evaluate the performance and emission characteristics of a single cylinder CI engine. A minor decrease in thermal efficiency is observed while increasing the quantity of waste cooking oil methyl ester (WCOME) in the blend. However, a considerable improvement in reduction of smoke, carbon monoxide (CO) and unburnt hydrocarbons (HC) emission are observed compared to diesel when blended with 20% WCOME. Emissions of CO and unburnt HC decrease upto 7%. Among all the blends least oxides of nitrogen (NOx) emission happens with 30% waste cooking oil methyl ester.

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2015

Journal Article

Dr. Sreekanth K. M. and Dr. Debjyoti Sahu, “Effect of iron oxide nanoparticle in bio digestion of a portable food-waste digester”, Journal of Chemical and Pharmaceutical Research, vol. 7, pp. 353-359, 2015.[Abstract]


Handling of wasted food product is a challenging task in municipal solid waste management. Dumping fast degradable material to landfills generates greenhouse gases as well as foul smell. Such biodegradable waste can be processed scientifically to obtain useful products. By utilizing these wastes in an anaerobic digester, biogas rich with methane gas (upto 60%) is generated and the residue slurry is used as organic fertilizer. It is the best means to deal with food/organic waste in rural as well as urban areas. Performance analysis of anaerobic digesters is reported in the literature since last few decades. Bio digestion involves slow chemical reactions. It is well reported in literature that high retention time makes this system less attractive. Additional iron content in the digestion process increases the production rate as it helps in reducing CO2 to form CH4. Increase in methane quantity increases the quality of biogas. Since pure iron may generate toxic free radicals in the system additional iron oxides powders are used. Generally nanoparticles catalyzes better than its bulk analogs. Bio degradable iron oxide nanoparticles produced by polyol method is added to the digester to enhance the rate of production. More »»

2014

Journal Article

Dr. Debjyoti Sahu, Mishra, P., DAS, N. I. T. U. N., Verma, A., and Gumma, S., “THE NET ADSORPTION OF HYDROGEN ON PALLADIUM NANOPARTICLES”, Surface Review and Letters, vol. 21, p. 1450022, 2014.[Abstract]


In this paper, we report the synthesis of polymer coated palladium (Pd) nanoparticles through a single stage reduction of Pd2+ ions by ethylene glycol. Polyvinyl pyrrolidone (PVP, MW 25,000) is used as a stabilizer. Self-assembled Pd nanoparticles (10–40 nm) were used in hydrogen adsorption studies. Gravimetric adsorption measurements were carried out in a pressure range of 0–26 bar at 293, 324, 364 and 392 K. Saturation for all isotherms was obtained within a few bars of pressure at all temperatures. Maximum hydrogen storage capacity observed was 0.58 wt.% at 324 K and 20 bar. Net adsorption calculations indicated that required tank volume (for storing a particular amount of hydrogen) can be significantly reduced by using a tank filled with Pd nanoparticle.

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2013

Journal Article

Dr. Debjyoti Sahu, Mishra, P., Edubilli, S., Verma, A., and Gumma, S., “Hydrogen Adsorption on Zn-BDC, Cr-BDC, Ni-DABCO, and Mg-DOBDC Metal–Organic Frameworks”, Journal of Chemical & Engineering Data, vol. 58, pp. 3096–3101, 2013.[Abstract]


This work reports hydrogen adsorption properties of four different metal–organic frameworks (MOFs) namely Zn-BDC, Cr-BDC, Ni-DABCO, and Mg-DOBDC. Gravimetric hydrogen adsorption measurements are performed over a wide range of temperature (90 K to 298 K) and pressure (0 bar to 100 bar). At the lowest experimental temperature (90 K to 100 K) all the isotherms are saturated and the adsorption capacity is governed by pore volume. On the other hand, at room temperature the isotherms closely follow Henry’s law. Modeling of the excess isotherms is also done. Net adsorption isotherms, which can directly indicate the efficiency of porous adsorbent for storage, are also presented. In terms of volumetric efficiency, Mg-DOBDC MOF exhibits best storage capacity out of all the MOFs considered in this study.

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Publication Type: Conference Proceedings

Year of Conference Publication Type Title

2015

Conference Proceedings

Dr. Debjyoti Sahu, “Hydrogen Adsorption on MOF Composites: A Review”, Second International Conference on Nanotechnology 2015, vol. 2015. Haldia Regional Centre, Indian Institute of Chemical Engineers, Haldia Institute of Technology, Haldia, India, p. 8, 2015.

2015

Conference Proceedings

Dr. Debjyoti Sahu and Sreekanth, K. M., “Exergy Analysis of Biogas Digester and Effect of Iron Oxide Nanoparticle in Bio Digestion”, Second International Conference on Nanaotechnology 2015, vol. 2015. Haldia Regional Centre, Indian Institute of Chemical Engineers, Haldia Institute of Technology, Haldia, India, p. 164, 2015.

2013

Conference Proceedings

Dr. Debjyoti Sahu, Verma, A., and Gumma, S., “Metal Organic Framework for Hydrogen Storage Applications”, AIChE Annual Meeting 2013, vol. 2013. American Institute of Chemical Engineers, San Francisco, CA USA, 2013.

2011

Conference Proceedings

Dr. Debjyoti Sahu, Verma, A., and Gumma, S., “Evaluation of Hydrogen Sorption in Nickel and Palladium Nanoparticles”, Third International Conference on Frontiers in Nanoscience and Technology, vol. 2011. Department of Physics, Cochin University of Science and Technology, Kochi, India, p. PSN-37, 2011.

2010

Conference Proceedings

Dr. Debjyoti Sahu, ,, Durgesh, S., Verma, A., and Gumma, S., “Synthesis and Characterization of Nickel Nanoparticle Using Template Assisted Electrodeposition Technique”, Chemical Engineering Congress 2010, vol. 2010. Department of Chemical Engineering, Annamalai University, Annamalainagar, India, p. 47, 2010.

2009

Conference Proceedings

K. M. S. Aravinda and Dr. Debjyoti Sahu, “ON THE NUMERICAL MODELLING OF FATIGUE BEHAVIOUR IN FIBRE REINFORCED COMPOSITE”, National Conference on Sustainability and Social Comfort - Strategizing Design and Manufacturing, vol. 2009. VNR Vignana Jyothi Institute of Engineering and Technology, Kukatpally, Hyderabad, India, 2009.

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