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    Wyświetlanie 1-5 z 5
    Tytuł:
    Future-oriented waste management technology for Ward-6, Bogura, Bangladesh – a step towards sustainability
    Autorzy:
    Dinnar, Sajjad Hossain
    Islam, Shobnom
    Singh, Manpreet
    Gaba, Rishab
    Powiązania:
    https://bibliotekanauki.pl/articles/2055770.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    sustainability
    landfill
    pyrolysis
    hydrothermal liquefaction
    gasification
    Opis:
    Rapid urbanization combined with high economic growth, industrialization, and changes in socio-economic conditions increase the quantity of municipal solid waste. Cities located in South-Asia are facing serious issues due to waste, with countries like India, Bangladesh, and Pakistan top of the list of bad waste management. The increasing generation of solid waste and also the improper management of waste in Bangladesh leads to environmental degradation. Current waste management practice in Bangladesh is so weak that day by day it is harming the climate and creating a lot of unwanted situations. This research consists of an examination of the current administrative measures and presents another proposition for the executive cycle to decrease ecological contamination. The research study aims to decrease the amount of waste being dumped into municipal sanitary landfill sites & converting the waste into energy which is both financially and environmentally suitable by involving unemployed people in the management system. The results of this study will give an idea of how waste can be utilized as a resource and how this resource can be a capital good as well as how the local level problems can be solved by taking some strategies and making our environment suitable for future generations.
    Źródło:
    Geomatics and Environmental Engineering; 2022, 16, 1; 5--15
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Catalytic conversion of lignin by immobilized Cu[H4]salen and [H2]salen complexes under hydrothermal conditions
    Autorzy:
    Zhou, Xue-Fei
    Powiązania:
    https://bibliotekanauki.pl/articles/342450.pdf
    Data publikacji:
    2020
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Tematy:
    organosolv lignin
    Cu([H4]salen)
    Cu([H2]salen)
    hydrothermal pyrolysis
    Opis:
    A comparative investigation was made of the effect of catalysis by immobilized Cu([H4]salen) on the hydrothermal conversion of organosolv lignin. The immobilization and hydrogenation of the complexes led to increased yield of liquid products compared with the corresponding unimmobilized and unhydrogenated complexes in catalytic conversion of lignin. In addition, the method of immobilization of the complexes affected the catalytic performance in lignin conversion, in which a higher yield of liquid products was obtained with the SB-immobilized complexes (ship-in-bottle method) than with the IM-immobilized complexes (impregnation method). The yield of liquid products obtained with Cu([H2]salen) at 250°C and 4 MPa O2 in water was 6.00%, compared with 16.80% and 22.08% respectively for Cu([H4]salen)/IM and Cu([H4]salen)/SB. Additionally, the addition of organic solvent had a marked effect on the catalytic performance of Cu([H4]salen), and the highest yield of liquid products (27.06%) was observed with Cu([H4]salen)/SB in water/methanol (80/20, v/v). The total yield of liquid products varied depending on temperature and oxygen pressure, and reached 46.01% under reaction conditions of 280°C and 6 MPa O2 in water/methanol (80/20, v/v). GC-MS analysis showed the main compounds in the liquid products to be phenols, with a yield of 32.16%. Other compounds included alcohols, ketones, aromatics, olefins, cycloalkanes, and alkanes. A mechanism for their formation was proposed based on the oxidation of a lignin model compound under hydrothermal conditions.
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2020, 62, 205; 81-91
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biomimetyczne metody otrzymywania materiałów z wykorzystaniem organicznych prekursorów
    Biomimetic methods for obtaining materials from organic precursors
    Autorzy:
    Kogut, Krzysztof
    Kasprzyk, Krzysztof
    Kłoś, Renata
    Powiązania:
    https://bibliotekanauki.pl/articles/36126058.pdf
    Data publikacji:
    2022
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
    Tematy:
    biomimetyka
    muszla
    drzewo
    materiały ceramiczne
    metoda hydrotermalna
    piroliza
    biomimetics
    shell of shellfish
    wood
    ceramic materials
    hydrothermal method
    pyrolysis
    Opis:
    W pracy przedstawiono metody biomimetyczne otrzymywania materiałów. Przedstawiono dwa przykłady otrzymania materiałów o potencjalnym zastosowaniu w implantologii z wykorzystaniem metod hydrotermalnych oraz pirolizy i infiltracji. Jako prekursory zastosowano muszle mięczaków oraz różne gatunki drzew. Wykonano badania dyfraktometryczne oraz analizy mikroskopowe. Stwierdzono, że możliwe jest uzyskanie materiałów ceramicznych o oczekiwanej strukturze metodami biomimetycznymi.
    This paper presents the biomimetic methods of the obtaining materials. Two examples of the obtaining materials with the use of hydrothermal and pyrolysis and infiltration methods, with possibility to implants application, was showed. As a precursor the shells of shellfish and different type of wood was used. The X-ray and microscopic analysis were carried out. It was found that is possible to obtain the ceramic material with required structure by biomimetic methods.
    Źródło:
    Szkło i Ceramika; 2022, 73, 4; 42-46
    0039-8144
    Pojawia się w:
    Szkło i Ceramika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biochars from wood biomass as effective methylene blue adsorbents
    Autorzy:
    Charmas, Barbara
    Wawrzaszek, Barbara
    Jedynak, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/24085657.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    activated biochars
    pyrolysis
    hydrothermal activation
    dye adsorption
    Opis:
    Forest waste is a significant ecological and economic problem, requiring effective solutions that will not only reduce its quantity but also contribute to the protection of the natural environment. This research paper focuses on the use of sawdust from mixed trees, as one of the main forest wastes, for production of biochars characterized by adsorption properties. Sawdust, a by-product of the wood industry, has a porous structure, which makes it an attractive precursor to biochar. Using pyrolysis technology and hydrothermal activation under various conditions, sawdust was transformed into biochars with a developed specific surface area. The studies proved that the parameters of the pyrolysis process have a significant impact on the structural, surface and adsorption properties of biochars. The materials were characterized based on the results of N2 adsorption, scanning electron microscopy SEM/EDS, thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Raman spectroscopy. The surface characterization was made using the Boehm titration and pHpzc determination. The sorption capacity of methylene blue (MB) was studied. It was stated, that the obtained materials were characterized by a large specific surface area (227.5 – 1019 m2/g), the micro/mesoporous structure and the large pores volume (0.106 – 0.784 cm3/g). The surface oxygen functionalities allowed for large adsorption of MB. The adsorption process follows the Langmuir theory (qm,cal from 357.1 to 434.8 mg/g) and can be described using the kinetic pseudo-second-order model (R2 = 0.99). The obtained biochars showed high adsorption capacity of methylene blue impurities which indicates their significant potential for use in water purification.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2023, 59, 4; art. no. 176509
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comprehensive review of renewable energy production from biomass-derived bio-oil
    Autorzy:
    Sharma, M.
    Singh, J.
    Baskar, C.
    Kumar, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/80718.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    renewable energy
    biomass
    bio-oil
    bioenergy
    biomass source
    fast pyrolysis
    hydrothermal liquefaction
    climate change
    energy security
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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