http://hdl.handle.net/2080/19 2026-04-21T00:26:43Z 2026-04-21T00:26:43Z Ghosh, Sayantan Pramanik, Krishna http://hdl.handle.net/2080/5777 2026-04-20T06:33:42Z 2026-04-01T00:00:00Z

Title: Valorisation of Mixed Food Wastes using a Green Deep Eutectic Solvent System to Recover Lignin as a Value-added Product and its Utilization in the Fabrication of Nanofibrous Mats Authors: Ghosh, Sayantan; Pramanik, Krishna Abstract: Valorising food waste using an eco-friendly solvent is proven to be an efficient strategy for the recovery of lignin as a value-added product together with alleviating adverse impact of this waste on the environment. The present study reports the recovery of lignin from mixed pomegranate and banana peels using a green deep eutectic solvent (DES) system composed of choline chloride and oxalic acid and its subsequent use in the fabrication of nanofibrous mats via electrospinning technique. The recovered lignin was comprehensively characterized by various analytical techniques to confirm its structural and morphological properties. A blend of lignin and polyvinyl alcohol was successfully electrospun into nanofibrous mats at an applied voltage of 14 kV and a flow rate of 0.3 ml/hr. The fabricated mats were characterized to assess their structure, morphology, and chemical content. Fourier Transform Infrared Spectroscopy revealed the presence of key lignin functional groups including syringyl, hydroxyl, and aromatic groups, in the mats, whereas X-Ray Diffraction verified their amorphous nature. Field Emission Scanning Electron Microscopy images clearly demonstrated the formation of uniform nanofibrous mats having interconnected pores. The elemental composition of the fabricated mats was confirmed from Energy Dispersive X-ray spectroscopy. In conclusion, lignin was successfully recovered from mixed food wastes using DES, and lignin based polymeric nanofibrous mats were fabricated by electrospinning, which can be further tested as membrane adsorbents for pollutant remediation. Description: Copyright belongs to proceedings publisher

2026-04-01T00:00:00Z Shirke, Tushar Baneshwar http://hdl.handle.net/2080/5776 2026-04-20T06:32:58Z 2026-02-01T00:00:00Z

Title: "GuardianEye" Mining Safety Glasses Authors: Shirke, Tushar Baneshwar Abstract: GuardianEye: A rugged, intrinsically safe smart eyewear platform. It integrates a multimodal array of biomedical sensors (PPG, EEG, Temperature) and environmental sensors (CO, CH4, dB level) into a frame compatible with standard mining PPE. GuardianEye provides proactive, contextual risk monitoring for miners, transforming passive protection into an active, intelligent safety companion. The innovation is the Multimodal Sensor Fusion Engine optimized for harsh industrial environments. We are the first to miniaturize and fuse clinical-grade fatigue/alertness sensing (EEG/EOG) with critical toxic gas detection (CH4) in a single, robust, and ergonomically compliant safety glass. This provides predictive safety intelligence where competitors only offer isolated data points. Elimination of Preventable Mining Fatalities. Mining has unacceptable rates of accidents due to environmental hazards and worker fatigue. GuardianEye provides the only real-time system to detect the convergence of both risks-e.g., high CH4 and severe miner fatigue-enabling intervention. This significantly reduces health risks, improves operational continuity, and sets a new global standard for occupational safety. Description: Copyright belongs to proceedings publisher.

2026-02-01T00:00:00Z Kachhap, Nitant Sahoo, Debi Prasad Murugan, S. http://hdl.handle.net/2080/5775 2026-04-17T11:45:57Z 2026-03-01T00:00:00Z

Title: Experimental Analysis of Drying Green Leaves in a Novel Food Drying Chamber Coupled to Latent Thermal energy storage Tank Charged by a Diesel Engine Exhaust Authors: Kachhap, Nitant; Sahoo, Debi Prasad; Murugan, S. Abstract: Drying agricultural products is an essential part of food to preserve the seasonal food and leaves by extracting the moisture and providing heat. Drying agricultural products in open air is one of the most prominent methods. However, there are few demerits when agricultural products are dried by open air drying. Drying them in a closed drying chamber has advantages such as controlled drying, contamination issues etc. In the present work an attempt is made to dry Moringa leaves by drying them with the help of hot air which is supplied by an electrical blower. Hot air is provided to the drying chamber by heating the atmospheric air with the help of availing waste heat stored in a latent heat storage (LHTES) tank which is integrated with a single cylinder, four stroke, and stationary diesel engine. The LHTES tank is charged by the exhaust gas for a specific period of time by melting Paraffin wax at almost 60⁰ C. The maximum heat stored inside the LHTEs tank is estimated to be around 20.39 MJ/h Performance of the drying chamber (DC) integrated with the LHTES tank is simulated by computational fluid dynamics (CFD) using ANSYS Fluent and the results are compared with the experimental data Further moisture removal characteristics and drying behaviour of Moringa leaves are evaluated. Description: Copyright belongs to the proceeding publisher.

2026-03-01T00:00:00Z Parida, Mrunmay Murugan, S. http://hdl.handle.net/2080/5774 2026-04-17T11:45:50Z 2026-03-01T00:00:00Z

Title: Study of Charging in Phase Changing Material using the Unused Heat Available in A Diesel Engine Exhaust Authors: Parida, Mrunmay; Murugan, S. Abstract: Cold start of an internal combustion (IC) engine causes higher fuel consumption, increased exhaust emissions, and increased wear on engine components. At the same time, a significant percentage of fuel energy is rejected to the surroundings as waste heat through the tailpipe. This waste heat can be stored using a proper storage material for later purpose. This experimental investigation studies the charging of a phase change material (PCM) filled in a latent heat thermal energy storage (LHTES) device which is attached to the exhaust manifold of a constant-speed, single-cylinder, four-stroke, air-cooled diesel engine. The investigation is further extended to use the energy stored in the device for preheating the air supplied to the intake of the same test engine during cold-start conditions. For preheating the air, ambient air is passed through the LHTES and sent to the intake manifold via different control valves. The performance of the test engine, operated at different engine load conditions with preheated air supplied to the engine, is evaluated, and the results are presented in this paper. Description: Copyright belongs to the proceeding publisher.

2026-03-01T00:00:00Z