Padhamnath, Pradeep
Loading...
Email Address
Employee
aktywny
Alternative name
Discipline
inżynieria materiałowa
11 results
Search Results
Now showing 1 - 10 of 11
Item type:Article, Access status: Open Access , Development of PV panel recycling process enabling complete recyclability of end-of-life silicon photovoltaic panels(2025) Nalluri, Srinath; Kuśmierczyk, Filip; Leow, Shin Woei; Reindl, Thomas; Padhamnath, Pradeep; Kopyściański, Mateusz; Karbowniczek, Joanna; Kozieł, Tomasz
Wydział Inżynierii Metali i Informatyki PrzemysłowejThe cumulative PV panel waste is expected to reach ≈8 million tonnes by 2030 and ≈ 80 million tonnes by 2050. This presents an opportunity to pursue new avenues in terms of recycling and improving the circularity of the PV panels. In this work we present experimental results for recycling c-Si PV panels using recently developed electrohydraulic shock-wave fragmentation (EHF) of PV panels. The EHF process allows for the recovery of all materials used in the manufacturing of PV panels. We use different types of panels for the recycling process and analyse the material recoverability in each condition. Further, we analyse the effectiveness of chemical treatment in isolating metals from the silicon obtained from recycled c-Si PV panels, providing an opportunity of recovering high quality metal and silicon. The separation process allows for the high-quality material recovery and could potentially improve the economic feasibility of the overall recycling process.Item type:Article, Access status: Open Access , Electrohydraulic fragmentation processing enabling separation and recovery of all components in end-of-life silicon photovoltaic panels(2025) Padhamnath, Pradeep; Nalluri, Srinath; Kuśmierczyk, Filip; Kopyściański, Mateusz; Karbowniczek, Joanna; Leow, Shin Woei; Reindl, Thomas
Wydział Inżynierii Metali i Informatyki PrzemysłowejThe exponential increased use of PV panels for energy production would also lead to enormous volumes of PV waste that need to be dealt with in an environmentally responsible manner. In this work we present experimental results for recycling crystalline silicon (c-Si) PV panels using recently developed electrohydraulic shock wave-based fragmentation of PV panels. The electrohydraulic fragmentation process allows for the efficient delamination of the modules and subsequent recovery of almost all valuable materials used in the manufacturing of PV panels, without thermally decomposing the polymers and eliminates creation of any toxic or hazardous waste during the process. We study the impact of the type of panel, size of the feed material and process duration on the quantity and quality of material recovered after the process.Item type:Article, Access status: Open Access , Development of low-cost, light weight c-Si photovoltaic modules with potential for applications in VIPV(2025) Fligier, Bartlomiej; Nalluri, Srinath; Moćko, Bernard; Drabczyk, Kazimierz; Kulesza-Matlak, Grażyna; Jajczak, Katarzyna; Padhamnath, Pradeep
WIMiIPVehicle integrated photovoltaics (VIPV) is gathering attention by researchers and industry alike to help in decarbonization of transport industry. While PV panels have been integrated to the vehicles to support auxiliary functions, their wide scale implementation is limited by their size, weight and rigidity. In this work we present a proof-of-concept method to produce bi-facial PV panels with fibre-glass reinforced composite fabric (GRCF) using vacuum resin infusion process. These modules are specifically designed for integrating with an electric car and to be used as a power source to charge the batteries. Mini modules are fabricated using two interdigitated back contact solar cells sandwiched between layers of GRCF sheets. The modules are prepared by drawing the resin under a suitable vacuum through the different GRCF layers and allowing the resin to cure at room temperature. The modules are prepared at room temperature without using a stringer or laminator. Three different metal end-strips are used to assess their performance in the finally prepared module. The modules are subjected to the damp-heat test to analyse the degradation in the modules and the suitability of the fabrication process. Results show that resistance losses and optical losses play a vital role in the final losses resulting from degradation of the modules. Finally, we have shown in this work that it is possible to fabricate such modules using low-cost technology. By fine tuning and scaling-up the process, it is possible to produce modules of any size which could further help in the rapid integration of c-Si PV modules in vehicles.Item type:Article, Access status: Open Access , Realization of a Novel FeSiAlCuSn Multicomponent Alloy and Characterization of Intermetallic Phases Formed at Different Temperatures During Cooling(2025) Kuśmierczyk, Filip; Padhamnath, Pradeep; Kopyściański, Mateusz; Gondek, Łukasz; Migas, Piotr; Karbowniczek, Mirosław
Wydział Inżynierii Metali i Informatyki PrzemysłowejFerrosilicon (FeSi) is a commercially important material with multiple uses in metallurgical processes. Recently, in an attempt to reduce the carbon impact of the FeSi production process, researchers have proposed using recycled Si recovered from electronic waste in the production of FeSi. However, Si recovered from electronic waste usually contains Al, Cu, and Sn as impurities. Hence, FeSi alloys produced with recycled Si from electronic waste may contain all these elements in varying proportions. Al, Cu, and Sn have been explored as alloying elements to produce alloys with Fe. FeSiAl alloys have also been studied recently for their superior properties. In this work, a multicomponent FeSiAlCuSn alloy is produced, and the phases formed at different temperatures are analyzed using different phase identification techniques. We also analyze the hardness of the multicomponent alloy to find any deviation from the standard FeSi alloy without the additional alloying elements. Understanding the phases and the composition of such alloys may help design future multi-component or high-entropy alloys involving Fe, Si, Al, Cu, and Sn for specific applications.Item type:Article, Access status: Open Access , Theoretical investigation of the impact of impurities in recycled silicon used for the production of ferrosilicon(2024) Padhamnath, Pradeep; Migas, Piotr; Karbowniczek, Mirosław
Wydział Inżynierii Metali i Informatyki PrzemysłowejItem type:Article, Access status: Open Access , Technologies for resource-efficient recycling of end-of-life crystalline silicon photovoltaic panels(2025) Nalluri, Srinath; Kuśmierczyk, Filip; Padhamnath, Pradeep; Kopyściański, Mateusz; Karbowniczek, Mirosław
Wydział Inżynierii Metali i Informatyki PrzemysłowejGlobal PV installations recently crossed the terawatt scale. The growth of photovoltaic (PV) installations is an important and desirable element in generating clean electricity and combating climate change. However, with increased use of PV panels for energy production enormous volumes of PV waste would be generated that would need to be dealt with in an environmentally responsible manner. In this work we present early-stage research results based on experiments conducted with recycling end-of-life (EOL) crystalline silicon (c-Si) PV panels promoting resource efficiency and circularity. We explore experimental pathways for both close-loop and open-loop recycling of EOL PV panels. For closed-loop recycling we present experimental results using the recently developed electrohydraulic shock wave-based fragmentation (EHF) of PV panels. The EHF process allows for the recovery of almost all valuable materials used in the manufacturing of PV panels. We further provide a succinct literature review for further downstream treatment of the end products obtained after EHF processing of EOL PV panels to recover precious metals such as Silver. For open-loop recycling, we propose using the panels in the production of ferrosilicon compounds, thereby reducing the emissions of greenhouse gases accompanied with their production. Through experiments it was onbserved that the size of the recycled Si does not impact the microstructure of the FeSi produced, which means that the technology could be easily used to handle different sizes of Si source. Through careful experiments and analysis we provide recycling methods to improve the circularity and resource efficiency in the management of end-of-life c-Si PV panels. Both experimental recycling pathways discussed in this work could potentially provide sustainable technical pathways to recycle EOL PV modules, which does not involve producing harmful greenhouse gases.Item type:Article, Access status: Open Access , Simulation of the effect of impurities in recycled silicon used for the for the production of ferrosilicon(2025) Padhamnath, Pradeep; Migas, Piotr; Karbowniczek, Mirosław
Wydział Inżynierii Metali i Informatyki PrzemysłowejDecarbonization of steel making and allied processes have been receiving immense attention of researchers. Similarly, recycling of waste resources and conversion or recovery of useful materials from waste destined for landfills to mitigate environmental impact, is also an important area of research. Ferrosilicon (FeSi) is currently produced using carbothermic reduction and an energy intensive process. However, silicon (Si) from electronic wastes could be combined with scrap steel to produce FeSi. The Si from electronic waste will, however, contain some impurities such as Aluminium (Al), copper (Cu) and Tin (Sn), which could be incorporated into the FeSi produced from such Si. Hence, in this work the impact of the impurities on the properties of FeSi was investigated theoretically and systematically with the help of FactSage simulations. The impact of three major impurities associated with recycled Si (Al, Cu and Sn) were analysed when present individually and then all together. The analysis was done with the help of phase diagrams for solidification process occurring under equilibrium conditions. It was found that the impurities impact the proportion of the final phases and the melting and phase-transition temperatures. Further, the presence of different intermetallic phases could impact the mechanical properties of the alloy as well. The presence of three impurities together with Fe and Si leads to a complex multicomponent system. While further experiments are needed to identify the actual phases formed during such process, this work provides as framework for carrying out such experiments in the future.Item type:Article, Access status: Open Access , Recent Progress in the Recovery and Recycling of Polymers from End-of-Life Silicon PV Modules(2025) Padhamnath, Pradeep
Wydział Inżynierii Metali i Informatyki PrzemysłowejSolar photovoltaic (PV) technology has emerged as the most preferred source of clean energy generation and has been deployed at a large scale. However, end-of-life management of the PV modules is a critical issue that has garnered the recent attention of lawmakers and researchers alike. Consequently, several researchers are actively developing technology to recycle the end-of-life PV modules. Since silicon PV modules account for more than 90% of the modules deployed globally, most of these efforts are focused on recycling crystalline silicon PV modules. Researchers have primarily focused on recovering pure silver from the contacts and pure Si from the solar cells. However, to ensure complete recyclability of such panels, the different polymers used in these modules must also be recycled. This review addresses the issue of recycling the polymers from end-of-life c-Si modules. Scopus and Google Scholar were used to search for the relevant literature. This review presents the current state-of-the-art technology related to polymer recycling found in the PV modules, the challenges encountered in their recycling, and the outlook. While research on the recycling of polymers has progressed in the last few decades, the instances of their applications in the recycling of polymers from PV panels are rarely reported in the literature. In this work, certain technical pathways, which can be employed to recycled polymers obtained from end-of-life PV panels, are presented. Recycling the polymers from the end-of-life silicon PV modules is crucial for improving the sustainability of solar PV technology.Item type:Article, Access status: Open Access , Electrohydraulic fragmentation processing enabling separation and recovery of all components in end-of-life silicon photovoltaic panels.(2025) Nalluri, Srinath; Kuśmierczyk, Filip; Leow, Shin Woei; Reindl, Thomas; Padhamnath, Pradeep; Kopyściański, Mateusz; Karbowniczek, Joanna
Wydział Inżynierii Metali i Informatyki PrzemysłowejThe exponential increased use of PV panels for energy production would also lead to enormous volumes of PV waste that need to be dealt with in an environmentally responsible manner. In this work we present experimental results for recycling crystalline silicon (c-Si) PV panels using recently developed electrohydraulic shock wave-based fragmentation of PV panels. The electrohydraulic fragmentation process allows for the efficient delamination of the modules and subsequent recovery of almost all valuable materials used in the manufacturing of PV panels, without thermally decomposing the polymers and eliminates creation of any toxic or hazardous waste during the process. We study the impact of the type of panel, size of the feed material and process duration on the quantity and quality of material recovered after the process.Item type:Article, Access status: Open Access , Investigation of Ferrosilicon produced with Si recovered from end-of-life photovoltaic panels(2025) Kuśmierczyk, Filip; Kopyściański, Mateusz; Rai, Adarsh; Kozieł, Tomasz; Goły, Marcin; Kopia, Agnieszka; Migas, Piotr; Karbowniczek, Mirosław; Padhamnath, Pradeep
Wydział Inżynierii Metali i Informatyki PrzemysłowejRecycling end-of-life (EOL) silicon (Si) PV modules have gathered recent attention from researchers. PV modules can be recycled using a closed loop cycle where the materials recovered are reinjected into the supply chain for producing new modules. However, such solutions are extremely complex, expensive and could lead to further generation of harmful chemicals or emissions. Another way to recycle c-Si PV modules is by using them to produce other commercially important materials, for example ferrosilicon, using an easy and inexpensive route. Ferrosilicon is produced by reduction of silica using carbonaceous sources, which generates planet warming greenhouse gases. In this work, we present a simple method to use recycled Si (reSi) obtained from EOL PV modules to produce FeSi using induction furnace and no carbonaceous source. Along with reSi, metallurgical grade Si and commercial FeSi75 were also used to produce FeSi samples for comparison. FeSi samples with different silicon content were prepared. We also investigate the effect of the oxygen in the processing atmosphere, by preparing samples in arc furnace under argon atmosphere. The samples were characterized using scanning electron microscope coupled with Energy dispersive X-ray spectroscopy, to analyse the microstructure. X-ray diffraction was also used to identify and compare the phases formed in different samples. Hardness of the samples was also determined to understand the ease in the mechanical processing of the samples for potential commercial applications. Through the experimental results we have shown that silicon recovered from EOL PV panels could be used in the fabrication of FeSi.