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    Wyświetlanie 1-4 z 4
    Tytuł:
    Phosphate and ammonia concentrations in waters from a meadow complex located on peat soils in various range of groundwater level
    Autorzy:
    Sapek, Andrzej
    Pietrzak, Stefan
    Juszkowska, Dominika
    Urbaniak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2048495.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    grassland
    groundwater level
    peat soils
    inorganic nitrogen concentration
    phosphorus concentration
    soil phosphorus cycle
    Opis:
    The aim of the study was to assess the P-PO4 and N-NH4 pollution of water in grasslands located on peat soils and to identify the impact of groundwater level on this pollution formation. The research was conducted in 2000-2010 on grounds of ITP-PIB in Biebrza village (Poland). Within lowland fen a total of 18 monitoring points of groundwater and watercourses were established in 6 separate test stands. The subject of the research was water collected from drainage ditches/channels and groundwater, which was taken from wells installed in organic-soil layer and wells whose bottom was 15-20 cm below this layer. Water samples were collected several times a year, and in the case of groundwater, its level was also measured. It was found that: 1) due to concentration level of P-PO4 and N-NH4, about 46 and 39% of water samples from organic-soil layer and more than 40 and 37% of water samples from mineral-organic-soil layer respectively, were characterized by poor chemical status; 2) due to the exceeding of the limit values of P-PO4 and N-NH4 concentration, water samples from watercourses in over 30 and 27% respectively were not within 1st and 2nd class of surface water quality; 3) P-PO4 and N-NH4 concentrations in each water type were statistically significant and positively correlated with each other; 4) in organic-soil layer the groundwater level changing every 10 cm was a statistically significant factor differentiating the average P-PO4 concentration in roundwater associated with mineral-organic layer of peat soil and average N-NH4 concentration in each type of water.
    Źródło:
    Journal of Water and Land Development; 2021, 51; 188-198
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phosphorus cycle - possibilities for its rebuilding
    Autorzy:
    Gorazda, Katarzyna
    Wzorek, Zbigniew
    Tarko, Barbara
    Nowak, Anna
    Kulczycka, Joanna
    Henclik, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1039475.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    phosphorus cycle
    phosphorus recovery
    sewage sludge ash
    acidic extraction of phosphorus
    sewage sludge incineration
    Opis:
    The rebuilding of the phosphorus cycle can be performed with the use of both biotechnology and chemical technology. This paper presents a review of the phosphorus cycle and the different approaches that can be taken to the recovery of phosphorus from phosphate-rich waste. Critical issues in the phosphorus cycle are also discussed. Methods for the recovery of phosphorus form sewage sludge ash are widely explored and divided into two groups: wet extraction methods and thermochemical methods. Laboratory-scale methods are described, as well as proposed industrial technologies, with particular regard to the possibilities for their implementation in Poland. Phosphorus recovery methods from SSA (sewage sludge ash) in our country seems to be promising due to the increasing number of sewage sludge incineration plants, which could easily supply ash to future recovery installations. For the effective recovery of P from sewage sludge ash, it is essential to make the right choice in determining the appropriate method to use with respect to the particular properties of the ash composition available. A patented method of phosphorus recovery by acid extraction methods, developed by Cracow University of Technology, results in an efficiency of 80-96% for phosphorus recovery. 3000 to 4000 tons of phosphorus per year can be recycled and introduced back into the environment, that covers around 7% of the total amount of phosphorus ore imported into Poland between 2008 and 2009.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 4; 725-730
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Life Cycle Assessment (LCA) of the integrated technology for the phosphorus recovery from sewage sludge ash (SSA) and fertilizers production
    Autorzy:
    Smol, Marzena
    Kulczycka, Joanna
    Lelek, Łukasz
    Gorazda, Katarzyna
    Wzorek, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/articles/204770.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    waste management
    life cycle assessment
    LCA
    sewage sludge ash
    SSA
    phosphorus recovery
    circular economy
    CE
    fertilizers
    Opis:
    The paper presents an application of Life Cycle Assessment (LCA) method for the environmental evaluation of the technologies for the fertilizers production. LCA has been used because it enables the most comprehensive identification, documentation and quantification of the potential impacts on the environment and the evaluation and comparison of all significant environmental aspects. The main objective of the study was to assess and compare two technologies for the production of phosphorus (P) fertilizers coming from primary and secondary sources. In order to calculate the potential environmental impact the IMPACT 2002+ method was used. The first part of the LCA included an inventory of all the materials used and emissions released by the system under investigation. In the following step, the inventory data were analyzed and aggregated in order to calculate one index representing the total environmental burden. In the scenario 1, fertilizers were produced with use of an integrated technology for the phosphorus recovery from sewage sludge ash (SSA) and P fertilizer production. Samples of SSA collected from two Polish mono-incineration plants were evaluated (Scenario 1a and Scenario 1b). In the scenario 2, P-based fertilizer (reference fertilizer – triple superphosphate) was produced from primary sources – phosphate rock. The results of the LCA showed that both processes contribute to a potential environmental impact. The overall results showed that the production process of P-based fertilizer affects the environment primarily through the use of the P raw materials. The specific results showed that the highest impact on the environment was obtained for the Scenario 2 (1.94899 Pt). Scenario 1a and 1b showed the environmental benefits associated with the avoiding of SSA storage and its emissions, reaching -1.3475 Pt and -3.82062 Pt, respectively. Comparing results of LCA of P-based fertilizer production from different waste streams, it was indicated that the better environmental performance was achieved in the scenario 1b, in which SSA had the higher content of P (52.5%) in the precipitate. In this case the lower amount of the energy and materials, including phosphoric acid, was needed for the production of fertilizer, calculated as 1 Mg P2O5. The results of the LCA may play a strategic role for the decision-makers in the aspect of searching and selection of the production and recovery technologies. By the environmental evaluation of different alternatives of P-based fertilizers it is possible to recognize and implement the most sustainable solutions.
    Źródło:
    Archives of Environmental Protection; 2020, 46, 2; 42-52
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bilans azotu i fosforu w wybranych gosdpodarstwach rolnych ukierunkowanych na produkcję mleka w warunkach zmian zachodzących w rolnictwie polskim
    N nad P budget selected dairy farms in view of changes in Polish agriculture
    Autorzy:
    Pietrzak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/339111.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    bilans azotu i fosforu
    gospodarstwo rolne
    obieg składników nawozowych
    produkcja mleczna
    nitrogen and phosphorus budget
    farm
    nutrients cycle
    milk production
    Opis:
    Rolnictwo polskie znajduje się w fazie intensywnych przekształceń wywołanych przemianami polityczno-ekonomicznymi po 1989 r. Wyrazem tych przekształceń w regionie Podlasia jest m.in. koncentracja i intensyfikacja produkcji mlecznej. Wraz z rozwojem gospodarstw prowadzących chów bydła mlecznego nasila się ich oddziaływanie na środowisko, głównie w wyniku zwiększającej się emisji związków azotu i fosforu. Ze względów środowiskowych i ekonomicznych w tego typu gospodarstwach coraz większego znaczenia nabiera efektywne wykorzystanie składników nawozowych. Podjęto badania, mające na celu ocenę stanu gospodarowania azotem i fosforem oraz możliwości jego optymalizacji w czterech typowych dla Podlasia gospodarstwach prowadzących chów bydła mlecznego. Badano bilanse azotu i fosforu oraz kształtujące je, wybrane, czynniki procesu produkcyjnego. Stwierdzono, że w trzech gospodarstwach ukierunkowanych tylko na produkcję mleka nadwyżka bilansowa azotu w latach 2000-2002 wynosiła od 108,0 do 174,0 kg N·ha-1, a wykorzystanie tego składnika - od 12,7 do 23,1%. W jednym gospodarstwie prowadzącym towarową produkcję roślinną i zwierzęcą nadwyżka wynosiła od 56,5 do 85,9 kg N·ha-1, a efektywność wykorzystania - od 32,4 do 40,3%. Poza skrajnymi przypadkami nadwyżka fosforu wynosiła w wymienionym okresie od 4,2 do 16,6 kg P·ha-1, a jego wykorzystanie - od 17,4 do 56,8%. Uznano, że istnieje możliwość poprawienia wyników bilansu azotu i fosforu w analizowanych gospodarstwach przez poprawę: jakości pasz objętościowych, praktyk postępowania z nawozami naturalnymi, odczynu gleb oraz struktury płodozmianu.
    Polish agriculture is subject to an intensive reconstruction following economic-political changes after 1989. In Podlasie region it is manifested e.g. in the concentration and intensification of dairy production. Development of dairy farms results in their increasing impact on the environment, particularly through nitrogen and phosphorus emissions. For environmental and economic reasons, the effective use of nutrients becomes more and more important in these farms. Studies were undertaken to assess nitrogen and phosphorus management and the possibilities of its improving in four dairy farms typical for Podlasie region. N and P budgets and some relevant productive factors were studied. N surplus ranged from 108 to 174 kg N·ha-1 in the years 2000-2002 and N efficiency varied between 12.7 and 23.1 % in three typically dairy farms. In one farm with plant and milk production the respective figures varied from 57 to 86 kg N·ha-1 and from 32.4 to 40.3 %. Apart from some extreme cases P surplus was from 4.2 to 16.6 kg P·ha-1 and P efficiency from 17.4 to 56.8 %. It is possible to improve N and P budgets in analyzed farms trough improving: bulk fodder quality, manure management, soil pH and crop rotation structure.
    Źródło:
    Woda-Środowisko-Obszary Wiejskie; 2004, 4, 1; 159-176
    1642-8145
    Pojawia się w:
    Woda-Środowisko-Obszary Wiejskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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