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KPR Institute of Engineering and Technology
Ph.D. and M.Tech. in Chemical Engineering (IIT Madras), B.Tech in Chemical Engineering (NIT Calicut)
Microwave heating, Photocatalysis, Desalination, Recycling of e-waste
The disposed solar panel contains several materials. To recover each materials present in disposed solar cell, suitable chemical reactions are identified. During this chemical reaction Hydrogen will be released. The produced hydrogen will be used in fuel cell for domestic cooking stove. The lab scale experiments are successfully finished. Further aim is to upgrade the lab scale technology to pilot scale for green hydrogen production.
Lineesh Punathil, K. Mohanasundaram, K. S. Tamilselavan, Ravishankar Sathyamurthy, and Ali J. Chamkha
International Journal of Photoenergy, ISSN: 1110662X, eISSN: 1687529X, Volume: 2021, Published: 2021 Hindawi Limited
The disposal of used photovoltaic panels is increasing day by day around the world. Therefore, an efficient method for recycling disposed photovoltaic panel is required to decrease environmental pollution. This work is aimed at efficiently recovering pure silicon and other materials such as aluminium, silver, and lead from disposed solar cells using chemical treatments. Earlier, the pure silicon was recovered by treating the solar cells with hydrofluoric acid or mixture of hydrofluoric acid and other chemicals. The usage of hydrofluoric acid is eliminated in the present work as it is highly toxic and corrosive chemical. The pure silicon (99.9984%) has been recovered by sequentially treating with three different chemicals. Aluminium, silver, and lead are also recovered as aluminium hydroxide, silver chloride, and lead oxide, respectively.
Madhuchhanda Bhattacharya, Lineesh Punathil, and Tanmay Basak
International Communications in Heat and Mass Transfer, ISSN: 07351933, Pages: 145-153, Published: 1 March 2017 Elsevier BV
Abstract Microwave heating is generally performed by positioning the sample within a container. The container can reflect, absorb or transmit microwaves based on the dielectric properties and that can influence the microwave heating characteristics of the sample. This work is an attempt to theoretically analyze the alteration of the microwave heating characteristics of materials due to the use of either a low-lossy alumina container or a high lossy SiC container. The heating characteristics have been simulated for the high-lossy beef and low-lossy bread samples of a fixed dimension by solving the coupled energy balance equation and detailed Helmholtz wave propagation equations within the sample-container assembly. It has been shown that the microwave heating characteristics can be significantly altered in the presence of the container based on the relative dielectric properties of the materials. The alumina container has been found to be efficient to enhance the microwave heating efficiency of the high lossy material such as beef, while the rapid microwave heating of the SiC container has been found to be beneficial to enhance the heating of the low lossy material such as bread in some cases.