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    Wyświetlanie 1-13 z 13
    Tytuł:
    Treatment of Collapsible Soils with Granulated Blast Furnace Slag and Calcined Eggshell Waste
    Autorzy:
    Adjabi, Souhila
    Nouaouria, Mohamed Salah
    Djebabla, Wafa
    Powiązania:
    https://bibliotekanauki.pl/articles/2051699.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    recycling of waste
    shear strength
    cohesion
    internal friction angle
    blast furnace slag
    calcined eggshell
    collapsible soil
    compaction energy
    recykling odpadów
    spójność
    kąt tarcia wewnętrznego
    żużel wielkopiecowy
    Opis:
    In order to meet environmental and socio-economic challenges, the recycling of waste tobe used in the treatment of geotechnical problems is one of the main ways of preserving the environment with a lower economic value. The objective of this experimental work is to improve the characteristics and to study the mechanical behaviour of collapsible soil treated with a new hydraulic stabilizer composed of Crushed Granulated Blast Furnace Slag (CGBS) active by Eggshell Waste (CES). The specimens were mixed with stabilizer content, varying from 0 to 15% in mass, with an initial water content of 4, 6 and 8% respectively. in mass. Oedometer apparatus was used to study the addition of new hydraulic stabilizer effect on the Collapse Potential. Triaxial tests are also conducted to determine the shear strength parameters (cohesion and internal friction angle) of this treated soil. The results of this research study show that the mechanical properties of the treated collapsible soil were significantly improved. An appreciable reduction in the collapse potential is observed. The addition of 15% of this new stabilizer with initial water content of 4% under a compaction of 60 blows/ layer is capable of increasing internal friction angle and cohesion. It can be concluded from this study that the mixture of granulated slag and calcined eggshell can be used as an effective treatment of collapsibility phenomenon at low cost while protecting the environment from industrial waste.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 2; 138-162
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulations of the influence of changes in waste composition on their energetic properties
    Autorzy:
    Marczak, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/125099.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    waste management municipal waste
    recycling
    calorific value of waste
    Opis:
    The objective to obtain the recommended (at least 50% by weight) level of recycled and reprocessed raw fractions of municipal waste in the perspective of 2020 might in turn contribute to the deterioration of the fuel properties of waste stream that is intended for incineration. In order to avoid oversizing heat recovery plants their con-struction should be based on well-defined properties of the waste fuel. The author carried out simulation calculations of the impact of changes in the composition of municipal waste on their energetic properties. The calculations of the calorific value of the waste fraction (so called combustible fraction) with the potential to be used as an alternative fuel were done.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 4; 90-97
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recyclability of Ore Beneficiation Wastes at the Lomonosov Deposit
    Autorzy:
    Pashkevich, Maria A.
    Petrova, Tatyana A.
    Powiązania:
    https://bibliotekanauki.pl/articles/124758.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    waste storage
    environmental hazard
    wastes of diamond ore beneficiation
    waste recycling
    Opis:
    The article presents the data based on the long-term observations of the Lomonosov mine tailing storage impact on the natural environment. The study of the chemical, mineral and phase composition of waste, sampled at the tailing site, was carried out. It was determined that the ore beneficiation waste in the Lomonosov deposit is generally represented by the minerals of the smectite group. According to the X-ray diffraction analysis data, the beneficiation wastes are a bi-mineral mixture of montmorillonite and talc with pyrophyllite impurities. The wastes of this composition are potentially magnesia raw materials used in the production of construction materials, such as cement, ceramic bricks, etc. Experimental studies have justified the use of the method of wastes recycling based on the roasting of the ore beneficiation tailings, with the number of process options, depending on the temperature regimes and the exposure time.
    Źródło:
    Journal of Ecological Engineering; 2019, 20, 2; 27-33
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    State of the Art in the End-of-Life Vehicle Recycling
    Autorzy:
    Lenort, Radim
    Staš, David
    Wicher, Pavel
    Straka, Martin
    Powiązania:
    https://bibliotekanauki.pl/articles/2069903.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    waste management
    reuse
    recovery
    recycling
    end-of-life vehicle
    ELV
    recycling network
    recycling system
    disassembly
    Opis:
    Growing ecological awareness in society and legal regulations aimed at reducing the negative impact of used products on the environment means that waste management begins to play a significant role in the modern world. Therefore, it is necessary to conduct research towards the organization and implementation of waste management. It has been noticed that an important link in the economy is the recycling of used products. Thus, numerous studies are undertaken in the direction of organization, improvement, automation and computerization of the product and material recycling process. The article presents the results of literature research in terms of the implementation of the end-of-life vehicle recycling process.
    Źródło:
    Rocznik Ochrona Środowiska; 2021, 23; 902--913
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Life cycle extension of mobile phones: an exploration with focus on the end-consumer
    Autorzy:
    Penners, Odette
    Semeijn, Janjaap
    van Riel, Allard C.R.
    Lambrechts, Wim
    Powiązania:
    https://bibliotekanauki.pl/articles/14450797.pdf
    Data publikacji:
    2018-12-22
    Wydawca:
    Wyższa Szkoła Bankowa we Wrocławiu
    Tematy:
    end of life
    e-waste
    mobile phones
    recycling
    WEEE
    Opis:
    Aim: All mobile phones will eventually become obsolete and should be collected and recycled in order to recover their high content of both dangerous and valuable materials. End-consumers play a key role in these processes as the collection and recycle systems cannot work properly without their contribution. Therefore, this exploratory study investigates how Dutch end-consumers can be stimulated to return their used mobile phones. Design / Research methods: the factors influencing consumers’ propensity to return and recycle obsolete mobile phones are examined. The results are based on a survey conducted among end-consumers of mobile phones in the Netherlands. Conclusions / findings: There is significant recycling potential as the majority of used mobile phones are simply kept at home. Keeping a used phone as a spare phone and being afraid of privacy disclosures are indicated as main reasons for not taking used phones to a recycling point. Originality / value of the article: The findings indicate that personal satisfaction from recycling and knowledge or awareness of the potential dangers from not properly returning play a crucial role in influencing the propensity.
    Źródło:
    Central European Review of Economics and Management; 2018, 2, 4; 7-37
    2543-9472
    Pojawia się w:
    Central European Review of Economics and Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Phenomenon of Medical Waste Recycling in Indonesia: Contact Time and Chlorine Dose as a Disinfectant with the Bio-Indicator Bacillus subtilis and Bacillus stearothermophilus
    Autorzy:
    Fikri, Elanda
    Kurniati, Iis
    Wartiniyati, -
    Prijanto, Teguh Budi
    Pujiono, -
    Syarief, Osman
    Khair, Amar Sharaf Eldin
    Powiązania:
    https://bibliotekanauki.pl/articles/1839585.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    recycling
    medical waste
    dosage
    duration of contact
    chlorine
    disinfection
    Opis:
    Efforts that have been done to manage the Hazardous and Toxic waste into non-Hazardous and Toxic waste are done by emptying, shredding, washing, and rinsing at least 3 times and disinfecting using chlorine. This is in accordance with the Indonesian Regulation of Ministry of Health No. 27 of 2017, which has stated that surface cleaning is permitted to use 0.05% chlorine during the process. Furthermore, in the Indonesian Regulation of the Ministry of Environment and Forestry No.56 of 2015, the chemical disinfection process is permitted to use an additional 3–6% sodium hypochlorite (NaOCl). However, there are still differences in dosage and it has not been mentioned regarding the immersion period during the disinfection process on both of the regulations. The purpose of this study was to determine the difference in contact time and the dose of chlorine as a disinfectant on the number of Bacillus subtilis and Bacillus stearothermophilus in the medical waste recycling process. The research design used in this study was a Randomized Factorial Design with experimental research type. A total of 104 recyclable medical waste samples were taken, using 3 treatments and 6 repetitions. The average temperature of the chlorine solution at the contact time of 15 minutes, 30 minutes, and 45 minutes was 24.34 °C; 24,53 °C; and 24,54 °C respectively, while the average pH of the chlorine solution at the contact time of 15 minutes, 30 minutes, and 45 minutes was 8.344; 8,375; and 8,461 respectively. The results showed that there was no difference in the duration of contact and the dose of chlorine as a disinfectant in the medical waste recycling process with a p-value of 0.377. The percentage reduction in the number of Bacillus subtilis and Bacillus stearothermophilus before and after treatment was 99.99% based on 4 positive controls. The findings in this study were the duration of contact time and the effective dose used in the recycling process of medical waste, which was at a dosage of 0.03% with 45 minutes of contact time. The government needs to conduct a re-assessment regarding the recommended ideal dosage in the surface disinfection process so that it would not cause a potential risk to humans or the environment.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 4; 47-58
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of granulation and content of polyester-glass waste on properties of composites
    Autorzy:
    Kyzioł, L.
    Panasiuk, K.
    Hajdukiewicz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/244947.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    recycling of composite
    polyester-glass waste
    tensile test
    strength properties
    Opis:
    Glass fibre reinforced composites are used in many branches of industry. Polyester-glass laminates serve as structural material in shipbuilding (e.g. hulls of units, superstructures), in railways, automotive (e.g. elements of car bodies and interior fittings, roofs of wagons, cisterns) or aviation (e.g. aircraft fuselages, fuel tanks, completion beaks and ballasts). Factors affecting the increase of their use include low specific gravity, optimal strength properties, corrosion resistance. This is associated with a large amount of post-production and post-use waste. The recycling problem of these materials remains unresolved. The article presents the technology of processing polyester-glass waste in order to obtain a recycle with a specific granulation. The selected technology for the production of layered composites with reinforcement in the form of recycle is described. For testing, granulation was selected for 1.2 and 3 mm, as well as content: 0%, 10%, 20% and 30%. Using the water-cutting method, samples were prepared according to the standard static tensile test for plastics. The tests were carried out using a universal testing machine as well as an extensometer for samples with granulation of 1.2 mm and 3 mm, as well as the selected recycled percentage. Obtained results of the research indicated that granulation as well as content affects the strength properties of composites. As the granulation increases, at the same content, the material gains less deformation. The increase in the amount of the recycle reduces the strength properties of the material, and also due to the decrease in the deformation value - the material becomes brittle.
    Źródło:
    Journal of KONES; 2018, 25, 4; 223-229
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent utilization of waste of electrical and electronic equipment (WEEE) with robotized tool
    Autorzy:
    Szałatkiewicz, J.
    Szewczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/384565.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    WEEE
    robotic
    dismantling
    disassembly
    waste
    recycling
    recovery of resources
    HDD
    Opis:
    The article examines the solution of intelligent robotic utilization of electrical waste and electronic equipment (WEEE), as means of materials recovery. The paper provides criteria for selection, identification and waste analysis, enabling application of robotic dismantling solutions. Based on proposed criteria, the waste of computer hard disk drives (HDD) was identified, analyzed, and their characteristics described. Furthermore applying described approach to robotized dismantling, the complete process of waste HDD processing, covering all the procedural steps was presented for the selected disk. Described intelligent utilization process can be performed with use of 2 robots equipped with, 2 tools and one conveyor handle. Authors also briefly presents issues related to proposed process approached during HDD waste disassembly studies. In addition, paper presents the quantities of materials to be recovered from the HDD waste.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 4; 45-49
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of Process Conditions for the Preparation of Copper Alloys Post-Production Chips for the Continuous Casting Process
    Autorzy:
    Malec, Witold
    Cwolek, Beata
    Brudny, Anna
    Kulasa, Joanna
    Marek, W.
    Stolorz, K.
    Wróbel, D.
    Filipowicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/27314152.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    waste
    recycling
    bronze
    moisture of waste
    continuous casting
    odpady poprodukcyjne
    recykling
    brąz
    wilgotność odpadów
    odlewanie ciągłe
    Opis:
    The paper presents the results of research aimed at developing assumptions for the preparation of a charge in the form of fine scrap copper alloys (chips/shells) guaranteeing effective removal of impurities and obtaining a metal bath of the required metallurgical quality. The tests were conducted for tin-zinc-lead bronze of the CC499K grade. As part of the work, the characteristics of this type of waste available on the market were made in terms of quality and the possibility of their use for the production of both alloys and finished products, taking into account the elimination of harmful impurities that may ultimately affect the production process adversely. The subject of the work was the selection of appropriate waste cleaning methods in the form of an oily shell in the CC499K (CuZn5Sn5Pb2) grade and its drying in terms of increasing the use of impure waste from machining as scrap for direct melting. The waste was assessed in relation to individual parameters. The research was carried out on 3 groups of waste, with varying degrees of moisture.
    Źródło:
    Archives of Foundry Engineering; 2023, 23, 2; 43--50
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of a prototype shredder for WEEE equipped with NdFeB magnets
    Autorzy:
    Friebe, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/27324383.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Techniki Górniczej KOMAG
    Tematy:
    NdFeB magnet
    recycling
    physical processing of electronic waste
    shredding
    rozdrabnianie
    recykling
    odpady elektryczne
    Opis:
    Waste Electrical and Electronic Equipment (WEEE) that contains neodymium magnets (NdFeB) has the potential to serve as a valuable source of elements, including critical ones. These magnets contain Rare Earth Elements (REEs) like Neodymium, Dysprosium, and Praseodymium. A noteworthy method of recycling REEs involves the magnet-to-magnet process, wherein the NdFeB alloy is separated from WEEE and directly reused in the production of new products, specifically new NdFeB magnets. The initial step in this recycling process involves disintegration, a procedure aimed at reducing and segregating the materials within the WEEE. The conventional process of disintegrating WEEE for recycling faces challenges due to the presence of magnetic materials, making it ineffective with existing equipment. To address this, a specialized device called a disintegrator, using counter-rotating cutting shafts, has been developed for efficient shredding of WEEE containing NdFeB. The goal of the research is to develop a prototype shredder to effectively recover valuable metals, including REEs, from WEEE. Specific sub-objectives include motor and gearbox selection, shaft bearings selection, gear design, and cutting blades design. The work involved calculations and 3D modelling of the disintegrator components using Autodesk Inventor 2020 software.
    Źródło:
    Mining Machines; 2023, 41, 2; 143--157
    2719-3306
    Pojawia się w:
    Mining Machines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fulfilment of the recovery and recycling obligations by entrepreneurs in Podkarpackie Province
    Realizacja obowiązku odzysku i recyklingu przez przedsiębiorców w województwie podkarpackim
    Autorzy:
    Przewoźnik, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/385755.pdf
    Data publikacji:
    2011
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    opłata produktowa
    odzysk
    recykling odpadów opakowaniowych
    recykling odpadów poużytkowych
    opakowania
    organizacje odzysku
    product fee
    recovery of packaging
    recycling of packaging
    post-use waste
    packaging
    recovery organisations
    Opis:
    The article presents binding legal regulations governing entrepreneurs’ obligations as regards recovery and recycling of packaging and post-use waste. It shows fee rates, recovery and recycling levels for packaging in the years 2007–2009. It gives examples of calculating the product fee that according to the Act must be paid by entrepreneurs for 2007, 2008 and 2009. The author of the article elaborates on regulations that must be complied with by the entrepreneurs who pack products and place them on the market. Furthermore, the article shows how the obligations imposed by the Act on obligations of the entrepreneurs as regards management of certain waste and on product fee are met in Podkarpackie Province.
    Artykuł przedstawia obowiązujące akty prawne, określające obowiązki przedsiębiorców w zakresie odzysku i recyklingu odpadów opakowaniowych i poużytkowych. Podane zostały stawki opłat oraz poziomy odzysku i recyklingu opakowań w latach 2007–2009. Pokazano przykłady wyliczeń opłaty produktowej za lata 2007, 2008 i 2009, którą ustawa nakłada na przedsiębiorców. W artykule omówiono przepisy, jakie powinni stosować przedsiębiorcy, którzy pakują produkty i wprowadzają je na rynek. Przedstawiono realizację powinności wynikających z ustawy o obowiązkach przedsiębiorców w zakresie gospodarowania niektórymi odpadami oraz o opłacie produktowej na terenie województwa podkarpackiego.
    Źródło:
    Geomatics and Environmental Engineering; 2011, 5, 4; 73-84
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cellular concrete – the material of sustainable construction
    Autorzy:
    Adamczyk, J.
    Zarębska, J.
    Ingrao, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/134694.pdf
    Data publikacji:
    2015
    Wydawca:
    ADVSEO
    Tematy:
    zrównoważona budowa
    beton komórkowy
    recykling odpadów budowlanych
    zrównoważone właściwości materiałów budowlanych
    sustainable construction
    cellular concrete
    construction waste recycling
    sustainable properties of building materials
    Opis:
    About 4 million Mg of construction waste is produced in Poland annually. According to the record of a “new” Directive (Directive of the European Parliament and the Council 2008/98/EC of 19 November 2008 on waste and repealing certain directives), preparation to reuse, recycle and other methods of recovery for construction and demolition waste should be increased to the minimum weight of 70% until 2020. In sustainable construction it is preferable to use the products which, after the usage period, can be subject to disposal with a special emphasis on recycling which, in addition to environmental benefits, generates tangible economic benefits. Recycling of building materials is also an important source of raw materials used as the surface foundation for the production of other construction materials or road works. Cellular concrete is nowadays considered to be a “natural” or “environmentally friendly” material. The article discusses the housing sector altogether with the market of construction materials as well as presents the characteristics of cellular concrete - an ecological construction material.
    Źródło:
    Technical Issues; 2015, 1; 3-12
    2392-3954
    Pojawia się w:
    Technical Issues
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected Problems of Processing and Risks Connected with Recycling of Waste Electric and Electronic Equipment
    Wybrane problemy i ryzyka związane z recyklingiem odpadów elektrycznych i elektronicznych
    Autorzy:
    Iwaszczuk, N.
    Jarzęcka, A.
    Jarosiński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/318309.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    przetwarzanie zużytego sprzętu elektrycznego i elektronicznego
    ryzyko małych i średnich przedsiębiorstw
    recykling metali nieżelaznych
    processing of waste of electric and electronic equipment
    risk of small and medium-sized enterprises
    non-ferrous metal recycling
    Opis:
    In the recent years significantly increased interest in the recovery of non-ferrous metal from waste of electrical and electronic equipment (WEEE) has been observed. This waste is classified as hazardous waste because it contains both toxic metals such as lead or mercury and organic components such as polychlorinated biphenyls. For these reasons disposing of this waste is understandable. In Poland many companies have been founded that are involved in recycling of WEEE waste. Typically, companies operating in this sector are one of the Small and Medium Enterprises (SMEs). The overriding objective of the SME sector recycling is to increase the degree of exploitation of metallic waste in an economically justifiable way. This paper focuses on some of the above-mentioned issues of technological and qualitative assessment of risks associated with recycling of metal, in principle copper, from WEEE. There are several examples given of the risks faced by domestic companies in the SME recycling WEEE sector.
    W ostatnich latach obserwuje się znaczny wzrost zainteresowania odzyskiem metali nieżelaznych z odpadów elektrycznych i elektronicznych (WEEE). Odpady te są kwalifikowane jako odpady niebezpieczne z uwagi na zawartość składników toksycznych takich jak ołów lub rtęć I składników organicznych takich jak polichlorowane bifenyle. Z tego powodu składowanie odpadów WEEE jest niedopuszczalne. Z reguły firmy zajmujące się WEEE są firmami sektora MŚP (małe i średnie przedsiębiorstwa). Zasadą działania firm sektora MŚP jest recykling prowadzony z uzasadnionym ekonomicznie zyskiem. W artykule przedstawiono kilka aspektów technologicznych oraz ryzyka związane z odzyskiem metali (głównie miedzi) z odpadów elektrycznych i elektronicznych.
    Źródło:
    Inżynieria Mineralna; 2016, R. 17, nr 2, 2; 201-209
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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