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Search results for: RECYCLING TYRES
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Management of ground tire rubber waste by incorporation into polyurethane-based composite foams
PublicationRapid economic growth implicated the developing multiple industry sectors, including the automotive branch, increasing waste generation since recycling and utilization methods have not been established simultaneously. A very severe threat is the generation of enormous amounts of post-consumer tires considered burdensome waste, e.g., due to the substantial emissions of volatile organic compounds (VOCs). Therefore, it is essential...
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Insights into baby disposable diapers sustainable application
PublicationThe sustainable use of baby disposable diapers is one of the issues currently being discussed to reduce the undesirable impact on the environment and improve the public's understanding of the proper use of diapers. This issue is a step toward promoting a cleaner, greener, and waste-less environment. In this article, the authors discuss options for a viable future for both people and the planet. We believe that it inspire others...
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Conversion of waste biomass to designed and tailored activated chars with valuable properties for adsorption and electrochemical applications
PublicationWaste biomass, a renewable energy source, is inexpensive material that has great potential in sorp-tion and electrochemical application. The selected waste materials (corncobs, coconut shells, wal-nuts, and pistachio husks) allow to close the production cycle and enable material recycling, which are important aspects in the hierarchy of waste management. The proposed methodology for pro-duction and activation of biochars can be...
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Recykling materiałów polimerowych IM I st., VII sem. 2022/2023
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Możliwoości ograniczania rozprzestrzeniania się pożarów pojazdów, przy zastosowaniu nowego typu nawierzchni drogowej
PublicationW artykule przedstawiono możliwość utrudnienia rozprzestrze niania się pożaru przy wycieku paliwa poprzez zastosowanie specjalnej, porowatej\ nawierzchni drogowej. Poza wieloma niewątpliwymi zaletami nawierzchni wykonywanej m.in. z agregatu powstałego w wyniku recyclingu zużytego ogumie nia samochodowego, możliwość zatrzymania rozlanego paliwa na ograniczonym obszarze i jego późniejsze stopniowe wypalenie się może znacząco przyczynić...
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Electrochemical Synthesis of Photocatalyst
PublicationPonowne wykorzystywanie i recykling fotokatalizatora nanocząsteczkowego jest nie wystarczająco rozwiązanym problem. Powszechnie fotokatalizatory są unieruchomiane przez zol-żel lub zanurzeniowo-powłokowe procedury. Jednak istnieją udokumentowane przypadki wyczerpania fotokatalizatora lub zmniejszenia jego działalności fotokatalitycznej. Synteza elektrochemiczna fotokatalizatora z natychmiastowym unieruchomieniem nie jest własciwie...
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A derivatisation agent selection guide
PublicationThe development of new tools for providing high quality information in a cost-effective and expeditious way is one of the main aims of analytical chemistry. Remarkably, the introduc- tion of the 12 principles of green chemistry paved the way forward for the development of analytical methodologies that are, ideally, inherently safe for the operator and the environ- ment, with the least possible consumption of energy and chemicals,...
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The electrochemical studies of CB-PLA surface activation by electrolysis in 1M NaOH
Open Research DataThe dataset contains the electrochemical studies performed under different conditions of surface activation of the CB-PLA 3D printed electrodes. The activation was performed by electrolysis in 1M NaOH solution under cycling polarization with different anodic or cathodic overpotentials (data in different subfolders). The file names contain the exact...
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Methods of Cyclist Training in Europe
PublicationThe following study aims to address the issue of cyclist training methodologies. Recent European bicycle accident statistics reveal a troubling upward trend. A potential solution to mitigate such incidents involves providing cyclists with comprehensive training encompassing traffic regulations and interactions with fellow road users. We conducted a comparative analysis of the cycling education approaches and cyclist training systems...
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INDICES FOR ASSESSING POTENTIAL ENVIRONMENTAL HAZARD FROM FUTURE SHIP SCRAPPING PROCESS, DETERMINABLE IN SHIP DESIGN STAGE
PublicationThis paper shortly presents the issue of utilization of ships after their withdrawal from service. Information on number of floating units liquidated in previous years was presented. Hazards to the environment , health and life of workers employed in the Far East ship scrapping yards operating on the beaches, were indicated. Then, the most important rules which have to make the ship recycling process safe were referred to. This...
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Structure-Property Relationship and Multiple Processing Studies of Novel Bio-Based Thermoplastic Polyurethane Elastomers
PublicationCurrently, the growing demand for polymeric materials has led to an increased need to develop effective recycling methods. This study focuses on the multiple processing of bio-based thermoplastic polyurethane elastomers (bio-TPUs) as a sustainable approach for polymeric waste management through mechanical recycling. The main objective is to investigate the influence of two reprocessing cycles on selected properties of bio-TPUs....
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Ultra Low Noise Poroelastic Road Surfaces
PublicationNoise is one of the most important environmental problems related to road traffic. During the last decades, the noise emitted by the engines and powertrains of vehicles was greatly reduced and tires became a clearly dominant noise source. The article describes the concept of low noise poroelastic road surfaces that are composed of mineral and rubber aggregate bound by polyurethane resin. Those surfaces have a porous structure and...
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ROAD SAFETY FOR CYCLISTS BASED ON THE CALORIES NEEDED
PublicationCyclists are a vulnerable group of road users, especially when no separate infrastructure for cyclists is provided. Then, road factors such as distance and altitude differences can indirectly affect cyclists' safety. Therefore, the authors proposed a procedure based on the geometric characteristics of the road that can determine riding difficulties for cyclists. The proposed procedure can be used both by the public authorities who...
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Poroelastic Road Surfaces - State of The Art
PublicationPoroelastic Road Surfaces (PERS) constitute a specific group of pavements containing a great amount of crumbled rubber. In most cases rubber aggregate constitutes about 20% of the mixture (by weight) and a polyurethane resin is used as a binder. As a result, PERS is characterized by a much higher elasticity than asphalt and a high porosity typical for drainage pavements. Due to this, tire/road noise is greatly reduced and on top...
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Fotokonwersja CO2 do lekkich węglowodorów
PublicationZagadnieniem o istotnym znaczeniu w kontekście problematyki ogranicznia emisji CO2 jako gazu cieplarnianego jest jego sekwestracja. Termin ten, odnoszący do zagadnienia recyklingu CO2, jest stosowany do opisu całego ciągu postępowania z ditlenkiem węgla, począwszy od jego separacji, a kończąc na operacji składowania
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Synteza, właściwości oligouretanodioli i uzyskanych z nich poliuretanów
PublicationCelem pracy było otrzymanie oligouretanomeroli, które mogą wykazywać przydatność do otrzymania poliuretanów. Oligouretanodiole otrzymano w recyklingu surowcowym odpadowej pianki polieterometanowej. Poliuretany syntezowano z izocyjanem MDI......oligouretanodiolu z polieterodiolem (Pokopol D2002) i glikolu butylowego. Własności mechaniczne poliuretanów zmierzono przy użyciu maszyn wytrzymałościowych.
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Pyrolysis Combined with the Dry Reforming of Waste Plastics as a Potential Method for Resource Recovery—A Review of Process Parameters and Catalysts
Publication: Emissions of greenhouse gases and growing amounts of waste plastic are serious environmental threats that need urgent attention. The current methods dedicated to waste plastic recycling are still insufficient and it is necessary to search for new technologies for waste plastic management. The pyrolysis-catalytic dry reforming (PCDR) of waste plastic is a promising pro-environmental way employed for the reduction of both CO2 and...
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ASSESSMENT OF VOLATILE ORGANIC COMPOUNDS EMISSIONS FROM RECYCLED LOW-DENSITY POLYETHYLENE STREAMS
PublicationThe recycling of plastics is currently one of the most significant industrial challenges. Due to the enormous amounts of plastic wastes generated by various industry branches, it is essential to look for the potential methods of their utilization. Nevertheless, it should not be forgotten that recycled plastics are not pure materials, and they still may show an unfavorable environmental impact. They may contain different contaminants...
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Composite GFRP U-shaped footbridge
PublicationThe paper presents proposals for the use of glass fiber reinforced polymer composites for the construction of engineering objects, known and commonly used in the shipbuilding industry. An example of a pedestrian footbridge was used in this case, which, despite the considerable thickness of the structural material, was made using infusion technology in one production cycle. The designed and produced footbridge span is durable, dynamically...
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Ryszard Katulski prof. dr hab. inż.
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Top 10 Iran Export Goods in 2011
Open Research DataIn the structure of Iranian exports the dominant position are different types of fuel (including chemical industry products). The structure of imports is much more fragmented. Positions worth of consideration are machinery and equipment, steel, vehicles parts, cereals and food.
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NMR dispersion studies of poly(ethylene oxide)/sodium montmorillonitenanocomposites
PublicationPraca prezentuje wyniki badań dotyczące struktury nanokompozytów opartych na matrycy poli(tlenku etylenu) zawierającej montmorylonit sodowy. Układy zawierające PEO/MMT scharakteryzowano metodami NMR (Fast Field Cycling NMR), DSC oraz XRD.
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Wpływ parametrów kruszywa na właściwości betonu przepuszczalnego
PublicationAutorzy w pracy przedstawili wpływ rodzaju i właściwości kruszywa grubego na właściwości mechaniczne betonu przepuszczającego. Określono wpływ jamistości betonu na gęstość betonu porowatego. W przeprowadzonych badaniach zastosowano kruszywo łamane granitowe, naturalne otoczakowe, kruszywo z recyklingu gruzu betonowego, kruszywo popiołoporytowe, granulowane kruszywo ze szkła spienionego.
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Charakterystyka właściwości kompozytów termoplastycznych napełnianych miałem gumowym
PublicationKompozyty termoplastyczne napełniane miałem gumowym otrzymano przy użyciu współbieżnej wytłaczarki dwuślimakowej. Scharakteryzowano właściwości mechaniczne oraz morfologię badanych kompozytów. Uzyskane wyniki wskazują że kompozyty typu termoplast/miał gumowy stanowią proekologiczną formę recyklingu zużytych opon samochodowych stanowiąc tym samym ciekawą alternatywę dla powszechnie stosowanego odzysku energetycznego.
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Krystyna Nagrodzka-Godycka prof. dr hab. inż.
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The Effect of Polyurethane Glycolysate on the Structure and Properties of Natural Rubber/Carbon Black Composites
PublicationIn this work the use of polyurethane chemical recycling product (i.e. glycolysis of polyurethane waste realized with the mass excess of polymer) as a plasticizer for natural rubber-based composites was proposed. The effect of plasticizer type (napthenic oil and polyurethane foam glycolysate) and amount (2, 4, 6 or 8 parts per 100 parts of natural rubber) on the processing properties of rubber mixtures and chemical structure, swelling,...
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One-step recovery of REE oxalates in electro-leaching of spent NdFeB magnets
PublicationRecovery of rare-earth elements (REEs) from spent NdFeB magnets is receiving great attention because of high amount of neodymium and potential risk of environmental pollution. In this study, a novel environment-friendly hydrometallurgical route is proposed for efficient recovery of REEs during electrochemical leaching with sulfuric and oxalic acids. With proper adjustment of the electrolyte composition and operating conditions,...
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Effect of Compounding Conditions on Static and Dynamic Mechanical Properties of High Density Polyethylene/Ground Tire Rubber Blends
PublicationSearching for new and cost-effective methods of waste rubber recycling is a subject of research in many scientific centers in the world. In this paper there are presented results of the research of the extrusion process of cheap and environmentally friendly thermoplastic compositions containing 50 % wt. of masses of ground tire rubber (GTR). The aim of this study was to determine the relationship between the mixing conditions and...
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Method of managing drill cuttings from shale gas formations
PublicationProposed management method of drill cuttings involves recycling for the expanded clay production. A theoretical presentation of the possibility, choosing planning path based on similarity between the materials used in the manufacture of expanded clay and oily cuttings. Application for the main stages of manufacture of expanded clay production of drill cuttings from shale gas extraction. Introduced into circulation solid waste partly...
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Effect of strain level on the stiffness of cold recycled bituminous mixtures
PublicationCold recycling is a sustainable technology for the rehabilitation of bitumi-nous pavements. This study investigates the stiffness response of cement-bitumen treated materials (CBTM)manufactured with 80% reclaimed asphalt and treated with 2.0% Portland cement and 4.0% bitumen emulsion. Indirect tensile stiffness modulus tests were carried out to assess the strain dependence of stiffness at target horizontal deformation levels between...
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Marcin Włoch dr inż.
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Przegląd aplikacji zużytych łopat turbin wiatrowych na potrzeby budownictwa infrastrukturalnego
PublicationArtykuł zawiera przedstawienie aktualnego stanu wiedzy na temat recyklingu i ponownego użycia łopat wirników turbin wiatrowych na potrzeby budownictwa infrastrukturalnego. Poruszana problematyka stała się w ostatnim czasie bardzo istotna, a prognozy i statystyki pokazują, że najbliższe lata, będące jednocześnie okresem intensywnego rozwoju energetyki wiatrowej, będą jeszcze bardziej niż kiedykolwiek wymagały opracowania metody...
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inclinometers results
Open Research DataThe aim of the research project is to determine the rotational stiffness of the connection between the purlin and the part of the truss top chord. The attached files are referred to inclinometers results (four devices, two axis of rotation for each device) placed on 16 specimens (two types of inclinometers location).
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Understanding the capacitance of thin composite films based on conducting polymer and carbon nanostructures in aqueous electrolytes
PublicationIn this work electrochemical performance of thin composite films consisted of poly(3,4-ethylenedioxythiophene) (PEDOT), graphene oxide (GOx) and oxidized multiwalled carbon nanotubes (oxMWCNTs) is investigated in various sulphates (Li2SO4, Na2SO4, K2SO4, MgSO4) and acidic (H2SO4) electrolytes. Capacitance values, rate capability and cycling stability achieved for the composite layers are correlated with the electrolytes’ properties...
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Thermal analysis and static strength of polyurethanes obtained from glycolysates
PublicationPrzeprowadzono analizę termiczną i zbadano właściwości wytrzymałościowe poliuretanów otrzymanych z glikolizatów o różnej budowie chemicznej. Glikolizaty pozyskiwano w procesie recyklingu surowcowego odpadów poliuretanowych o niskiej gęstości. Środkiem glikolizującym był propano-1,3-diol. Poliuretany z glikolizatów syntezowano metodą prepolimerową z MDI i BDO jako przedłużacza łańcuchów. Nie stosowano katalizatorów.
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Zagospodarowanie zużytych opon w świetle prawodawstwa obowiązującego w Polsce
PublicationIlość odpadów gumowych, w szczególności zużytych opon, z roku na rok systematycznie wzrasta. W związku z tym pojawia się problem utylizacji i zagospodarowania opon wycofanych z eksploatacji. W artykule omówiono podstawowe sposoby recyklingu zużytych opon samochodowych, przedstawiono również zalety i wady poszczególnych metod. Jednym z istotnych problemów, dotyczących wdrażania procesów recyklingu jest nieznajomość bądź niestosowanie...
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Re-use of photovotaic [i.e. photovoltaic] crystalline silicon solar cells - technological possibilities
PublicationSystemy fotowoltaiczne są stosowane na całym świecie jako niezawodne i wydajne układy zasilania dla zastosowań przemysłowych, komunalnych i komercyjnych. Średni czas eksploatacji modułów fotowoltaicznych wynosi ponad 25 lat. Wyeksploatowane moduły oraz te, które uległy uszkodzeniu, są obecnie przeważnie składowane na wysypiskach jako odpady przemysłowe lub komunalne, np. jako szkło lub materiał rozbiórkowy, co było dopuszczalne...
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Advanced coating of interior of tanks for rising environmental safety of tankers - novel applications of polyurethanes
PublicationOpisano technologię nanoszenia ciekłego systemu poliuretanowego na niewygrzewane elementy stalowe i stalowo-betonowe oraz sposób łączenia powłoki poliuretanowej z wymienionymi materiałami, a także między sobą przy użyciu odpowiednich środków adhezyjnych. Scharakteryzowano metodę utylizacji i odzysku polioli z zużytych w badaniach powłok poliuretanowych w recyklingu surowcowym poprzez zastosowanie małoczšsteczkowych glikoli jako...
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SESNED: Dataset for Event-Based Non-Intrusive Load Monitoring Research
Open Research DataSescom NILM Energy Dataset (SESNED ) description
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Thermographic imaging of electrochemical double layer capacitors during cycling charging - discharging 0 - 2,7 V at 120 mA. Sample 103. Image period: 0,5 sec.
Open Research DataDataset contains thermal images of prototype electrochemical double layer capacitor taken during cyclic charging - discharging. The sample was charged to 2,7 V and discharged to 10 mV by constant current 120 mA. Sample 103. Thermographic pictures were taken relatively fast, with period of 0,5 sec in order to examine the fast fluctuations of sample...
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Income obtained according to particular rates only by taxpayers conducting non-agricultural business activity 2015
Open Research DataTaxation in the form of a lump sum on recorded revenues does not apply to certain types of activity, regardless of their size. We are talking about taxpayers who achieve revenue in whole or in part, among others from on account of running pharmacies, activities in the field of buying and selling foreign exchange values, activities in the field of trade...
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Spinon excitations in the quasi-one-dimensional S=12 chain compound Cs4CuSb2Cl12
PublicationThe spin−1/2 Heisenberg antiferromagnetic chain is ideal for realizing one of the simplest gapless quantum spin liquids (QSLs), supporting a many-body ground state whose elementary excitations are fractional fermionic excitations called spinons. Here we report the discovery of such a one-dimensional (1D) QSL in Cs4CuSb2Cl12. Compared to previously reported S=1/2 1D chains, this material possesses a wider temperature range over...
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Nicole Nawrot dr inż.
PeopleDr. Eng. Nicole Nawrot has been employed at the Department of Sanitary Engineering since 2016. In 2021, she obtained a PhD in the field of engineering and technical sciences in the discipline of environmental engineering, mining and energy. Doctoral thesis entitled "Heavy metals in urban retention tanks bottom sediments: distribution, source tracking, and evaluation of phytostabilization adaptability and performance of P. australis...
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Robert Jankowski prof. dr hab. inż.
PeopleHe was born on December 26, 1968 in Gdynia. A graduate of the High School at the Consulate of Poland in Benghazi, Libya (1987), a student at the Gdańsk University of Technology (MSc studies, 1987-1991 and 1992-1993), University of Sheffield, England (BSc studies, 1991-1992), University of Roskilde, Denmark (MSc course, 1993) and University of Tokyo, Japan (PhD studies, 1994-1997). From the beginning of his professional career associated...
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Impact of reclaimed asphalt pavement (RAP) on low-temperature properties of asphalt concrete
PublicationHot mix recycling is a practice which enables reusing materials from old asphalt pavements. Current Polish regulations allow usage of RAP only for binder and base courses, and its amount is limited. Asphalt mixtures with RAP material have to fulfil requirements stated for typical asphalt mixtures. The research presents low-temperature properties of twelve different asphalt concretes with RAP material, determined using three-point...
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Application of Spinel and Hexagonal Ferrites in Heterogeneous Photocatalysis
PublicationSemiconducting materials display unique features that enable their use in a variety of applications, including self-cleaning surfaces, water purification systems, hydrogen generation, solar energy conversion, etc. However, one of the major issues is separation of the used materials from the process suspension. Therefore, chemical compounds with magnetic properties have been proposed as crucial components of photocatalytic composites,...
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Sustainable urban planning in the context of studentification of the inner city areas
PublicationThe social dimension of urban planning as well as the importance of local communities and civic participation are often underlined in contemporary urban renewal and revitalisation programmes based on the principles of sustainable development. British Urban Renaissance is one the most far-reaching and widely discussed urban regeneration strategies which aims at repopulation and social diversification of inner city areas and land...
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Planetary roller extruders in the sustainable development of polymer blends and composites – Past, present and future
PublicationScrew extruders as continuous flow reactors allow the synthesis of new polymers, preparation of polymer blends and composites, and modification or functionalization of commercially available polymers. Literature data shows that the twin screw extrusion is the most popular solution used for this purpose. In contrast, the number of scientific papers on alternative methods, such as multi-screw extruders, is somewhat limited. This...
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Poroelastic Road Surface – a Promising Road Traffic Noise Abatement Solution
PublicationRoad surfaces have a direct impact on the generation of noise by rolling tyres, the main and dominant source of noise of moving vehicles, as well as may affect propagation of noise emitted by all noise sources of a vehicle. Thus there is no doubt that pavement should be considered as one of the major potential road traffic noise abatement measure. Low noise pavements of existing types may in new conditions provide up to 8 dB of...
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Vehicle Dynamics - L-15/C-15/L-15/P-15, Design and Production Engineering, WIMiO, undergraduate studies, engineering studies, full-time (stationary) studies, 2021/2022, se06, (M:320383W0), summer semester 2023/2024
e-Learning CoursesModuł przedmiotów wybieralnych, MiBM, I stopień, specjalność w j. angielskim: Design and Production Engineering (DaPE), semestr 6?, (przedmiot dla Chińczyków), Lecture: Throttle by tyred wheel: slip rolling, rolling with tyre strain, vertical and lateral surface reactions, traction, energetic looses, forces in contact path. Drugs of movement: rolling, air, gradient, inertia, cornering and towing. Forces ant torques acting to vehicle...