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    Wyświetlanie 1-8 z 8
    Tytuł:
    Xylose substrate as the only nutrient in the operation of microbial fuel cells
    Autorzy:
    Vajda, B.
    Nemestothy, N.
    Bakonyi, P.
    Bélafi-Bakó, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/208205.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    microbial fuel cells
    catalysis
    anaerobic conditions
    anaerobic sludge
    catalytic reaction
    Shewanella
    mikrobiologiczne ogniwa paliwowe
    kataliza
    warunki beztlenowe
    reakcje katalityczne
    Opis:
    Microbial fuel cells are bioelectrochemical devices converting chemical energy of organic compounds (i.e. biomass) into electrical energy by catalytic reactions of microbes under anaerobic conditions. The operation of two-chamber microbial fuel cells by Shewanella putrefaciens and mesophilic anaerobic sludge was studied comparatively, using xylose and glucose as solo substrates during the experiments. It was found that higher electric power was generated by the multicultural system than by the monoculture.
    Źródło:
    Environment Protection Engineering; 2014, 40, 2; 131-141
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy and sustainability of operation of a wastewater treatment plant
    Autorzy:
    Bodík, I.
    Kubaská, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/208254.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wastewater treatment
    biogas
    energy utilization
    sewage pumping plant
    sludge digestion
    toxicity
    water treatment plants
    anaerobic sludge digestion
    energy consumption
    wastewater treatment plants
    oczyszczanie ścieków
    biogaz
    wykorzystanie energii
    przepompownie ścieków
    fermentacja osadów
    toksyczność
    stacje uzdatniania wody
    fermentacja beztlenowa osadów
    zużycie energii
    oczyszczalnie ścieków
    Opis:
    The study summarises the energy consumption data obtained from the Slovak wastewater treatment plants. Overall, 51 large WWTPs using mesophilic anaerobic sludge digestion and biogas utilisation (the total capacity of 2.5 mil. p.e.) and 17 small rural WWTPs (the total capacity 15 000 p.e.) were compared in many technological and energy parameters. The average energy consumption in large WWTPs in Slovakia is 0.485 kWh/m3 and 0.915 kWh/m3 in small rural plants. The average energy demand related to BOD5 load represents the value of 2.27 kWh/kg BOD5, in Slovak plants. The specific energy production is relatively low - in average 1.2 kWh el /m3 of produced biogas and 0.1 kWh el /m 3 of treated wastewater, respectively. The average energy autarky in Slovak plants is 25.2%. Some plants have high energy autarky (>65%), despite no external biowastes being dosed to these during operation.
    Źródło:
    Environment Protection Engineering; 2013, 39, 2; 15-24
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intensification of the anaerobic microbiological degradation of sewage sludge under bio-sulfidogenic conditions
    Autorzy:
    Plyatsuk, L.
    Chernish, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/207919.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    anaerobic digestion
    desulfurization
    hydrogen sulfide
    ozonization
    sewage sludge
    anaerobic bioreactors
    organic matter removal
    sewage sludge treatment
    fermentacja beztlenowa
    odsiarczanie
    siarkowodór
    ozonowanie
    osady ściekowe
    bioreaktor beztlenowy
    usuwanie materii organicznej
    przeróbka osadów ściekowych
    Opis:
    Possibility of using phosphogypsum as a mineral substrate for the sewage sludge treatment in bio-sulfidogenic conditions has been investigated. Anaerobic microbiological degradation (AMD) on way of sulfidogenesis was used to produce biogenic hydrogen sulfide. The ozonation of the sludge prior to the AMD under bio-sulfidogenic conditions led to higher efficiencies of hydrogen sulfide production and organic matter removal. After 20 days of digestion, the elimination of CODt and CODs varied between 78-84% and 83-87%, respectively, within advanced operation of anaerobic bioreactor. Technological applications of such system has been discussed.
    Źródło:
    Environment Protection Engineering; 2013, 39, 3; 101-118
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Start-up performance of a mesophilic anaerobic digester without external inoculums
    Autorzy:
    Dohdoh, A. M.
    Aboulfotoh, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207791.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    sludge digestion chamber
    inoculation
    anaerobic digestion
    biogas
    komora fermentacyjna
    inokulacja
    fermentacja beztlenowa
    biogaz
    pasza
    Opis:
    The objective of anaerobic digester start-up is to achieve steady-state operation and the required reduction performance in the shortest possible time. The present study aims to assess a novel strategy to start-up pilot scale mesophilic anaerobic digester with internal inoculums; the operational parameters such as feed concentration and operating temperature were also evaluated. Three pilot scale anaerobic digester systems were designed and manufactured. They were equipped with all necessary instruments for measurements, operation and control. Each system consists of a feed tank, a reactor (anaerobic digester), a gas storage tank, and a displaced water collecting tank. The digester start-up was achieved successfully and smoothly without any operational problems. The feed concentration had minor effects on the performance of the digester start-up while the operating temperature has approximately no effect.
    Źródło:
    Environment Protection Engineering; 2017, 43, 4; 29-39
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of zero-valent iron and enzymes on the anaerobic co-digestion of sewage sludge and corn silage
    Autorzy:
    Zhou, Haidong
    Cao, Zhengcao
    Ying, Zhenxi
    Liu, Jicheng
    Hu, Tao
    Zhang, Mingquan
    Zhang, Jingyuan
    Powiązania:
    https://bibliotekanauki.pl/articles/2032872.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    corn silage
    COD
    sewage sludge
    anaerobic digestion
    kiszonka z kukurydzy
    ChZT
    osad ściekowy
    beztlenowa fermentacja
    Opis:
    Anaerobic co-digestion of sewage sludge and corn silage with zero-valent iron powder (Fe0), cellulase, and papain as reinforcement means was conducted. COD-based feeding ratio of sewage sludge to corn silage was set to 2:1, the solids retention time (SRT) 20 day, digestion temperature 35 °C, and mixing speed 60 rpm. Removal rates of total COD during the control group, and Fe0, papain, cellulase, and papain, Fe0, and the two kinds of enzyme-added tests were 38.04, 41.02, 34.62, 34.55, 35.42, and 48.21%, respectively. The corresponding biogas production was 2.12, 2.62, 2.22, 2.41, 2.25, and 2.81 dm3/day, respectively. The results indicated the addition of cellulase, and papain could maximize the decomposition and hydrolysis of organic matter in sewage sludge and corn silage to volatile fatty acids. Fe0 could reduce the redox potentials of the anaerobic co-digestion, optimize the circumstances of the methanogenesis stage, accelerate biogas production, and improve biogas components. Fe0 and enzymes played a synergistic role in the anaerobic co-digestion system. Life cycle assessment indicated that the anaerobic co-digestion of sludge and corn silage co-substrates could benefit the economy, environment, and social development under the synergistic action of Fe0 and enzymes.
    Źródło:
    Environment Protection Engineering; 2020, 46, 4; 41-56
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of zero-valent iron and enzymes on the anaerobic co-digestion of sewage sludge and corn silage
    Autorzy:
    Zhou, Haidong
    Cao, Zhengcao
    Ying, Zhenxi
    Liu, Jicheng
    Hu, Tao
    Zhang, Mingquan
    Zhang, Jingyuan
    Powiązania:
    https://bibliotekanauki.pl/articles/2032890.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    corn silage
    COD
    sewage sludge
    anaerobic digestion
    kiszonka z kukurydzy
    ChzT
    osad ściekowy
    beztlenowa fermentacja
    Opis:
    Anaerobic co-digestion of sewage sludge and corn silage with zero-valent iron powder (Fe0), cellulase, and papain as reinforcement means was conducted. COD-based feeding ratio of sewage sludge to corn silage was set to 2:1, the solids retention time (SRT) 20 day, digestion temperature 35 °C, and mixing speed 60 rpm. Removal rates of total COD during the control group, and Fe0, papain, cellulase, and papain, Fe0, and the two kinds of enzyme-added tests were 38.04, 41.02, 34.62, 34.55, 35.42, and 48.21%, respectively. The corresponding biogas production was 2.12, 2.62, 2.22, 2.41, 2.25, and 2.81 dm3/day, respectively. The results indicated the addition of cellulase, and papain could maximize the decomposition and hydrolysis of organic matter in sewage sludge and corn silage to volatile fatty acids. Fe0 could reduce the redox potentials of the anaerobic co-digestion, optimize the circumstances of the methanogenesis stage, accelerate biogas production, and improve biogas components. Fe0 and enzymes played a synergistic role in the anaerobic co-digestion system. Life cycle assessment indicated that the anaerobic co-digestion of sludge and corn silage co-substrates could benefit the economy, environment, and social development under the synergistic action of Fe0 and enzymes.
    Źródło:
    Environment Protection Engineering; 2020, 46, 4; 41-56
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of clofibric acid and diclofenac during anaerobic digestion of sewage sludge
    Autorzy:
    Zhou, H.
    Zhang, Q.
    Zhang, Q
    Ma, L.
    Tu, B.
    Li, H.
    Zhou, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/207894.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    fermentacja beztlenowa
    osady ściekowe
    farmaceutyki
    kwas klofibrowy
    diklofenak
    anaerobic digestion
    sewage sludge
    pharmaceuticals
    clofibric acid
    diclofenac
    Opis:
    Removal of two acidic pharmaceuticals, clofibric acid and diclofenac, present in sewage sludge using two kinds of anaerobic digestions was investigated. The effective isolation and purification pretreatment to extract the target compounds from the sewage sludge samples was firstly established, followed by gas chromatography-mass spectrometry (GC-MS) analysis to identify and quantify them. Under mesophilic conditions, the removal efficiencies for clofibric acid and diclofenac with the initial concentrations of 5 μg /dm3 were up to 95% and 97%. After thermophilic anaerobic digestion, the removal efficiency could be increased to 99.3% for clofibric acid, however, it did not increase for diclofenac. In general, anaerobic digestion could effectively remove the target compounds from the sewage sludge (all above 90%).
    Źródło:
    Environment Protection Engineering; 2013, 39, 4; 63-77
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Boosting production of methane from sewage sludge by addition of grease trap sludge
    Autorzy:
    Neczaj, E.
    Grosser, A.
    Worwąg, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/207466.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    anaerobic digestion
    methane
    sewage sludge
    biogas production
    methane production
    fermentacja beztlenowa
    metan
    osady ściekowe
    produkcja biogazu
    produkcja metanu
    Opis:
    Feasibility and possible use of grease trap waste (GTW) as a co-substrate for improving biogas production in anaerobic digestion with sewage sludge has been established. Anaerobic co-digestion was studied in a semi-continuous experiment at 37 °C with hydraulic retention time (HRT) of 10 days. The grease trap sludge accounted for 20, 22, 24, 26, 28 and 30% of the mixture based on volatile solids. The results of the present laboratory study revealed that the use of GTW as a cosubstrate is considered to be interesting option for digestion of sewage sludge due to increased methane production.
    Źródło:
    Environment Protection Engineering; 2013, 39, 2; 125-133
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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