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    Wyświetlanie 1-11 z 11
    Tytuł:
    Effect of Using Various Cathode Materials (Carbon Felt, Ni-Co, Cu-B, and Cu-Ag) on the Operation of Microbial Fuel Cell
    Autorzy:
    Włodarczyk, Paweł P.
    Włodarczyk, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/27314860.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    bioelectricity
    microbial fuel cell
    MFC
    cathode materials
    bioelectrochemical system
    COD reduction
    renewable energy sources
    bioelektryczność
    mikrobiologiczne ogniwo paliwowe
    materiały katodowe
    system bio-elektrochemiczny
    redukcja ChZT
    odnawialne źródła energii
    Opis:
    Wastewater has high potential as an energy source. Therefore, it is important to recover even the smallest part of this energy, e.g., in microbial fuel cells (MFCs). The obtained electricity production depends on the process rate of the electrodes. In MFC, the microorganisms are the catalyst of anode, and the cathode is usually made of carbon material. To increase the MFC efficiency it is necessary to search the new cathode materials. In this work, the electricity production from yeast wastewater in membrane-less microbial fuel cells with a carbon felt, Ni-Co, Cu-B, and Cu-Ag cathodes has been analyzed. In the first place, the measurements of the stationary potential of the electrodes (with Cu-Ag catalyst obtained by the electrochemical deposition technique) were performed. Next, the analysis of the electric energy production during the operation of the membrane-less microbial fuel cell (ML-MFC). The highest parameters were obtained for the Ni-Co and Cu-Ag catalysts. The cell voltage of 607 mV for Ni-Co and 605 mV for Cu-Ag was obtained. Additionally, the power of 4.29 mW for both cathodes - Ni-Co and Cu-Ag was obtained. Moreover, Ni-Co and Cu-Ag allow the shortest time of COD reduction. Based on the test results (with selected MFC design, wastewater, temperature, etc.), it can be concluded that of all the analyzed electrodes, Cu-Ag and Ni-Co electrodes have the best parameters for use as cathodes in ML-MFC. However, based on the results of this study, it can be concluded that all the tested electrodes can be used as cathode material in MFC.
    Źródło:
    Civil and Environmental Engineering Reports; 2023, 33, 4; 95--105
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of powering the microbial fuel cell with various kinds of wastewater
    Autorzy:
    Włodarczyk, Barbara
    Włodarczyk, Paweł P.
    Powiązania:
    https://bibliotekanauki.pl/articles/100985.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    microbial fuel cell
    wastewater treatment
    environmental engineering
    renewable energy sources
    clean technology
    process yeast wastewater
    Opis:
    The possibility to combine wastewater treatment and electricity production can accomplish a microbial fuel cell. Microbial fuel cells use glucose from wastewater as a fuel. In recent years, both production of municipal and industry wastewater increases very much. Municipal wastewater is directed to the wastewater treatment plant. While industry wastewater can be use as a fertilizer. But, both municipal and industry wastewater can be used in the microbial fuel cells. The comparison of powering the microbial fuel cell with municipal and process wastewater from yeast production is presented in this paper. The measurements covered comparison of changes in the concentration of COD in the reactor without aeration, with aeration and with using a microbial fuel cell (powered with municipal and industry wastewater). The results of measurements of COD showed no differences between the microbial fuel cell powered with municipal wastewater and the microbial fuel cell powered with process yeast wastewater. But, the power output is higher with using process yeast wastewater to powering the microbial fuel cell.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2019, II/1; 131-140
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feeding a Membrane-less Microbial Fuel Cell by Mixed Municipal and Industrial Wastewater
    Autorzy:
    Włodarczyk, Barbara
    Włodarczyk, Paweł P.
    Powiązania:
    https://bibliotekanauki.pl/articles/27314862.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    bioelectricity
    bioenergy
    microbial fuel cell
    MFC
    municipal wastewater
    industrial wastewater
    renewable energy sources
    COD reduction
    environmental protection
    bioelektryczność
    bioenergia
    mikrobiologiczne ogniwo paliwowe
    ścieki komunalne
    ścieki przemysłowe
    odnawialne źródła energii
    Redukcja ChZT
    ochrona środowiska
    Opis:
    Due to the constant growth of the world's population, the amount of generated wastewater is also constantly increasing. One of the devices that can use wastewater as a raw material for energy production is a microbial fuel cell (MFC). MFCs technology is constantly evolving. However, to increase its use, it is necessary to improve its efficiency. There are various possibilities to ensure this, such as the use of new electrode materials, new cell designs, or the use of wastewaters from different sources. In this paper the analysis of MFC operation (cell voltage, power, and current density) fed by mixed municipal and industrial wastewaters was shown. Moreover, the change in time of COD was analyzed. Due to cost reduction the membrane-less microbial fuel cell (ML-MFC) was chosen. It was noted that the addition of concentrated process wastewater increases the COD reduction time in the ML MFC. An increase of generated bioelectricity during fed ML-MFC by mixed municipal and industrial (process wastewater from yeast production) wastewater was demonstrated. The highest values of average cell voltage (598 mV), maximum power (4.47 mW) and maximum current density (0.26 mA•cm-2) were obtained for a 10% share of yeast process wastewater in the mixed wastewater, which fed the ML-MFC.
    Źródło:
    Civil and Environmental Engineering Reports; 2023, 33, 4; 50--62
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Patients’ awareness of the prevention and treatment of colorectal cancer
    Autorzy:
    Dziki, Łukasz
    Puła, Anna
    Stawiski, Konrad
    Mudza, Barbara
    Włodarczyk, Marcin
    Dziki, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1394394.pdf
    Data publikacji:
    2015
    Wydawca:
    Index Copernicus International
    Tematy:
    colorectal cancer
    patients’ awareness
    prevention
    Opis:
    The aim of the study was to assess patients’ awareness of the prevention and treatment of colorectal cancer. Material and methods. Patients diagnosed with colorectal cancer, hospitalised at the Department of General and Colorectal Surgery of the Medical University in Łódź during the period from January 2015 to April 2015, were asked to complete a questionnaire concerning their families’ medical case record, factors predisposing them to the development of colorectal cancer, the tests applied in diagnostics, and the treatment process. The questionnaire comprised 42 closed-ended questions with one correct answer. A statistical analysis of all answers was carried out. Results. The study group consisted of 30 men and 20 women aged 27–94 years old. A strong, statistically significant negative correlation between a patient’s age and his/her awareness of the prevention and treatment of colorectal cancer was noted (p<0.001; r= -0.51). The study demonstrated a statistically significant relationship between the occurrence of neoplasms in a patient’s family (p=0.009) or, more specifically, the occurrence of colorectal cancer (p=0.008), and the awareness of the prevention programme. The women’s group was characterised by statistically significantly greater awareness of colonoscopy as a screening examination (p=0.004). Conclusions. Patients need more information on colorectal cancer, its risk factors, prevention, the treatment process, and postoperative care. Lack of awareness of the colorectal cancer issue can be one of the major factors contributing to the high incidence of this disease.
    Źródło:
    Polish Journal of Surgery; 2015, 87, 9; 459-463
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Biological Properties Of Lactoferrin
    Autorzy:
    Trybek, Grzegorz
    Metlerski, Marcin
    Szumilas, Kamila
    Aniko-Włodarczyk, Magda
    Preuss, Olga
    Grocholewicz, Katarzyna
    Wiszniewska, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/1054782.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    antimicrobial activity
    immunomodulatory effect
    lactoferrin
    Opis:
    Lactoferrin (LF) is an iron-binding glycoprotein from the transferrin family, which has been identified in most biological fluids as secretions from exocrine glands and the content of specific granules of neutrophils. It has been reported to have numerous functions. Due to antimicrobial and anti-inflammatory activity, the lactoferrin plays significant role in host defense against infection and extreme inflammation. Recent studies have also demonstrated that LF can protect against cancer in experimental animals and has anticarcinogenic activity in many human tumors. At the cellular level, LF modulates the proliferation, differentiation, maturation, activation, migration and function of immune cells. This review presents the multifunctional roles and specific beneficial properties of lactoferrin.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2016, 15, 3; 15-25
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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