Wydział Inżynierii Procesowej i Ochrony Środowiska / Faculty of Process and Environmental Engineering / W9
Stały URI zbioruhttp://hdl.handle.net/11652/9
Przeglądaj
150 wyniki
Wyniki wyszukiwania
Pozycja Regression Analysis of the Impact of Foreign Direct Investments, Adjusted Net Savings, and Environmental Tax Revenues on the Consumption of Renewable Energy Sources in EU Countries(MDPI Open Access Journals, 2024) Kukharets, Valentyna; Čingiene, Rasa ; Juočiūnienė, Dalia; Kukharets, Savelii ; Blažauskas, Egidijus ; Szufa, Szymon ; Muzychenko, Andrii ; Belei, Svitlana ; Lahodyn, Nazar ; Hutsol, Taras ; Department of Applied Economics. Finance and Accounting, Agriculture Academy. Vytautas Magnus University. Kukharets, Valentyna and Juočiūnienė, Dalia.; Department of Agricultural Engineering and Safety. Agriculture Academy. Vytautas Magnus University. Čingiene, Rasa and Blažauskas, Egidijus.; Department of Mechanical, Energy and Biotechnology Engineering. Agriculture Academy. Vytautas Magnus University. Kukharets, Savelii.; Department of Agricultural Engineering. Odesa State Agrarian University. Kukharets, Savelii.; Faculty of Process and Environmental Engineering. Lodz University of Technology. Szufa, Szymon.; Department of Statistics and Economic Analysis. National University of Life and Enviromental Sciences of Ukraine. Muzychenko, Andrii.; Department of Business Economics and Human Resource Management. Ukraine Yury Fedkovich Chernivtsi National University. Belei, Svitlana and Lahodyn, Nazar.; Ukrainian University in Europe—Foundation. Hutsol, Taras.; Department of Mechanics and Agroecosystems Engineering, Polissia National University. Hutsol, Taras.It is very important for EU countries to achieve energy independence. But this is actually impossible without a high level of use or consumption of renewable energy (RE) sources. Important parameters affecting the consumption of RE sources are as follows: foreign direct investments (FDI), adjusted net savings (ANS), and environmental tax revenues. In the presented work, the likely impact of the above indicators on the level of use of RE sources was estimated using a second-order regression equation. As a result, it was established that the growth of the adjusted net savings indicator and an increase in environmental tax revenues (ETR) have a positive effect on the level of use of RE sources. With significant FDI, the level of ANS does not have a very obvious effect on the growth of the level of use of RE sources. An increase in the level of ANS allows for an increase in ETR, which in turn contributes to an increase in the level of consumption of RE sources. It was also established that an increase in the level of ANS contributes to a more complete realization of the potential of FDI for the development of RE. It has been empirically established that a consistently high consumption of renewable energy sources is actually possible in the countries with a high level of adjusted net savings, high environmental tax revenues, and active attraction of foreign direct investments.Pozycja Harnessing Switchgrass for Sustainable Energy: Bioethanol Production Processes and Pretreatment Technologies(MDPI Open Access Journals, 2024) Unyay, Hilal; Perendeci, Nuriye, Altınay ; Piersa, Piotr; Szufa, Szymon; Skwarczynska-Wojsa, Agata; Faculty of Process and Environmental Engineering, Lodz University of Technology. Unyay, Hilal and Piersa, Piotr and Szufa, Szymon.; Department of Environmental Engineering. Akdeniz University. Perendeci, Nuriye, Altınay.; Department of Water Purification and Protection. Rzeszow University of Technology. Skwarczynska-Wojsa, Agata.This paper investigates bioethanol production from switchgrass, focusing on enhancement of efficiency through various pretreatment methods and comparing two bioethanol production processes: simultaneous saccharification and fermentation (SSF) and separate hydrolysis and fermentation (SHF). Physical, chemical, and biological pretreatment processes are applied to enhance the breakdown of switchgrass’s lignocellulosic structure. Effects of pretreatments, enzymatic hydrolysis, and fermentation on ethanol yield are discussed in detail. The comparative analysis reveals that SSF yields higher ethanol outputs within shorter times by integrating hydrolysis and fermentation into a single process. In contrast, SHF offers more control by separating these stages. The comparative analysis highlights that SSF achieves higher ethanol yields more efficiently, although it might restrict SHF’s operational flexibility. This study aims to provide a comprehensive overview of the current pretreatments, hydrolysis methods, and fermentation processes in bioethanol production from switchgrass, offering insights into their scalability, economic viability, and potential environmental benefits. The findings are expected to contribute to the ongoing discussions and developments in renewable bioenergy solutions, supporting advancing more sustainable and efficient bioethanol production techniques.Pozycja Batch rolling-bed dryer applicability for drying biomass prior to torrefaction(Elsevier, 2025) Szufa, Szymon; Unyay, Hilal; Pakowski, Zdzislaw; Piersa, Piotr; Siczek, Krzysztof; Kabaciński, Mirosław; Sobek, Szymon; Moj, Kevin; Likozar, Blaž; Kostyniuk, Andrii; Junga, Robert; Faculty of Process and Environmental Engineering. Lodz University of Technology. Szymon Szufa, Hilal Unyay, Zdzislaw Pakowski, Piotr Piersa.; Department of Vehicles and Fundamentals of Machine Design. Lodz University of Technology. Krzysztof Siczek.; Department of Thermal Engineering and Industrial Facilities. Opole University of Technology. Kabaciński, Mirosław and Junga, Robert.; Department of Heating, Ventilation, and Dust Removal Technology. Silesian University of Technology. Sobek, Szymon.; Faculty of Mechanical Engineering. Opole University of Technology. Moj, Kevin.; Department of Catalysis and Chemical Reaction Engineering. National Institute of Chemistry. Likozar, Blaž and Kostyniuk, Andrii.This study investigates the suitability of a pilot-scale batch rolling-bed dryer for drying pine wood chips intended for torrefaction. The batch rolling bed dryer emerges as an ideal solution for further processes like torrefaction, offering a compact design and a wide range of operational parameters. Compared to rotary dryers, it occupies less volume, providing greater efficiency. Additionally, its adjustable drying airflow and compatibility with various biomass forms and particle sizes enhance its versatility. The volumetric evaporation rate was found 13.9 kg/m3 per hour for the total dryer volume and 78.8 kg/m3 for the bed volume. Mechanical tests demonstrate satisfactory operation, with potential for further optimization through impeller blade design improvements. The study also presents a simple model using the CDC modeling approach, successfully describing drying curves in most experiments, albeit with some limitations in temperature curve simulations. Overall, the rolling bed dryer proves to be a convenient solution for drying wood chips as a pretreatment for steam torrefaction, offering ease of operation and promising potential for application in continuous torrefaction lines.Pozycja Reduction of spruce phytotoxicity by superheated steam torrefaction and its use in stimulating the growth of ecological bio‑products: Lemna minor L(Springer Nature, 2025) Szufa, Szymon; Unyay, Hilal; Piersa, Piotr; Kędzierska‑Sar, Aleksandra; Romanowska‑Duda, Zdzislawa; Likozar, Blaz; Faculty of Process and Environmental Engineering. Lodz University of Technology. Szymon Szufa, Hilal Unyay, Piotr Piersa & Aleksandra Kędzierska-Sar.; Faculty of Biology and Environmental Protection. University of Lodz. Zdzislawa Romanowska-Duda.; Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry. Szymon Szufa & Blaz Likozar.The use of biochar in agriculture is associated with the concepts of "carbon sink" and "carbon negative," which will constitute additional income for farms in the near future and may provide them with a key role in the fight against global warming. The existing model in the Scandinavian countries is one of the first to combine biochar with carbon dioxide biosequestration. Fertilizers with excessive nutrient content, salinity issues, impurities, or irregular pH levels can induce phytotoxicity, damaging plant health and growth. Torrefied woody biomass can work as a bulking agent, carbon carrier, or as an mendment for composting materials containing high amounts of water and/or nitrogen contents. Superheated steam torrefaction as a valorization process increases the amount of pores in which minerals can be stored and the plant will grow faster and bigger by using these pores agglomerated minerals. The torrefaction process was conducted using the DynTHERM TG Rubotherm high-temperature and high-pressure thermogravimetric analysis apparatus under conditions of superheated steam flow. Various residence times (10, 20, and 40 min) and torrefaction temperatures (250, 275, and 300 °C) were explored to assess their efficacy in reducing the phytotoxicity of torrefied spruce. To confirm this assumption, a toxicity test with Lemna minor L. was carried out according to Radić et al. (2011) and extended to the determination of chlorophyll index and chlorophyll fluorescence to assess the physiological status of the plants after treatment with different doses of spruce wood biocarbon. Research indicates that biochar positively impacts soil quality and plants. Thanks to its unique properties, biochar provides nutrients, enhancing fertilization efficiency [1]. Biochar, after concentrating and adsorbing the nutrients from the wastewater, can be used as a soil amendment or fertilizer. Biochar blended with organic residues full of nutrients is more effective in improving soil properties and crop yields than the exclusive application of pure biochar or other fertilizers. Traditional chemical fertilizers have drawbacks, such as rapid nutrient leaching, severe environmental pollution, and high costs. Therefore, biochar is gaining increasing recognition worldwide.Pozycja Przesiewacze sitowe materiałów uziarnionych. Wpływ konstrukcji maszyn przesiewających na jakość produktów przesiewania(Wydawnictwo Politechniki Łódzkiej, 2020) Modrzewski, Remigiusz; Wodziński, Piotr (Rec.); Olejnik, Tomasz (Rec.)"Celem klasyfikacji mechanicznej materiału ziarnistego na sitach jest podział tego materiału na różniące się wymiarami grupy ziaren. Dokonuje się go na przesiewaczach wyposażonych w jedno lub w kilka sit. Przesiewanie jest najbardziej rozpowszechnioną metodą klasyfikacji mechanicznej materiałów ziarnistych. Jest istotnym procesem w górnictwie (przy operacjach przeróbki węgla), hutnictwie, budownictwie, w przemyśle chemicznym, spożywczym, papierniczym, farmaceutycznym, spożywczym itp. Skala tego procesu jest bardzo duża, bowiem codziennie przesiewane są miliony ton różnych produktów."Pozycja Inżynieria koloidalnych układów chitozanowych wrażliwych na zmianę temperatury(Wydawnictwo Politechniki Łódzkiej, 2019) Owczarz, Piotr; Mucha, Maria (Rec.); Rogalski, Grzegorz (Rec.)"W pracy przestawiono analizę teoretyczna i doświadczalną wpływu rodzaju rozpuszczalnika oraz rodzaju kationu związanego z glicerofosforanem na temperaturę punktu przemiany fazowej, kinetykę procesu żelowania oraz morfologię otrzymanych hydrożeli. Stwierdzono, że rodzaj zastosowanego rozpuszczalnika wpływa na proces przemiany fazowej zol-żel w znacznie mniejszym stopniu niż rodzaj kationu metalu obecnego w układzie. Wykazano, że zapewnienie takich samych proporcji liczby jonów glicerofosforanowych GP2- związanych z innym kationem metalu do liczby grup aminowych prowadzi do otrzymania układów znacznie różniących się właściwościami lepkosprężystymi, energią aktywacji procesu oraz temperaturą i szybkością procesu przemiany fazowej. Obecność w układzie nierozpuszczonych soli glicerofosforanu wapnia (naturalnych zarodków procesu agregacji) znacznie obniża temperaturę przemiany fazowej i prowadzi do wzrostu szybkości tej przemiany. Jednocześnie skład układu koloidalnego w istotny sposób wpływa na strukturę przestrzenną powstałych hydrożeli."Pozycja Application of Life Cycle Assessment to Analysis of Fibre Composite Manufacturing Technologies in Shipyards Industry(2024) Ziemińska-Stolarska, Aleksandra; Sobulska, Mariia; Pietrzak, Monika; Zbiciński, Ireneusz; Faculty of Process and Environmental Engineering, Lodz University of Technology; Faculty of Chemistry, Lodz University of TechnologyLife cycle assessment (LCA) is used to evaluate the environmental load of fibre composite manufacturing technologies in the shipyards industry in a frame of the Fibre4Yards (Horizon 2020) project. This paper is focused on the LCA of fibre-reinforced polymer (FRP) technologies used to produce all elements of the floating unit, i.e., the conventional vacuum infusion technology for the deck panel and adaptive mould process for superstructure panels, ultraviolet (UV) curved pultrusion process for the production of stiffeners, hot stamping technology for brackets, and three-dimensional (3D) printing and automatic tape placement (ATP) for pillars. Environmental impact was assessed based on standard indicators: Global Warming Potential, water consumption, and fossil resource scarcity. The results indicate that the total carbon footprint of analysed FRP technologies is mainly produced by the type of the materials applied rather than by the amount of energy consumed during the process.Pozycja Badanie hydrotermicznej karboniacji opadów kuchennych(Wydawnictwo Politechniki Łódzkiej, 2023) Ślęzak, R.; Ledakowicz, S.; Imbierowicz, M.Pozycja Badanie kinetyki degradacji polimerów pochodzenia biologicznego w glebie w warunkach naturalnych(Wydawnictwo Politechniki Łódzkiej, 2023) Ślęzak, R.; Krzystek, L.Pozycja Zastosowanie frakcjonowania pianowego i wodnej ekstrakcji dwufazowej do oczyszczania C-fikocyjaniny z Thermosynechococcus PCC 6715(Wydawnictwo Politechniki Łódzkiej, 2023) Szeląg, R.; Antecka, A.; Ledakowicz, S.