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    Wyświetlanie 1-6 z 6
    Tytuł:
    Biphasic calcium phosphate bioceramics doped with nanometals
    Autorzy:
    Malina, Dagmara
    Wróbel, Katarzyna
    Poręba, Klaudia
    Wzorek, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/articles/1844729.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Źródło:
    Engineering of Biomaterials; 2021, 24, 163; 98
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    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:
    The impact of reagents concentration on the efficiency of obtaining high-purity magnesium hydroxide
    Autorzy:
    Radomski, Piotr
    Jarosiński, Andrzej
    Wzorek, Zbigniew
    Nowak, Anna K.
    Powiązania:
    https://bibliotekanauki.pl/articles/778842.pdf
    Data publikacji:
    2020
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    magnesium hydroxide
    precipitation method
    inorganic flame retardants
    Opis:
    The work presents the impact of reagents concentration and the drying process on the efficiency of obtaining magnesium hydroxide and its specific surface area. Magnesium sulphate(VI) within the concentration range of 0.7–2.0 mol/dm3  was used in the research as magnesium feedstock and sodium hydroxide was used as a precipitating agent within the same concentration range. The process of obtaining magnesium hydroxide was carried out with a 25% excess of the precipitating agent in relation to the reaction stoichiometry. The obtained suspension was separated by way of multi-stage sedimentation with the use of acetone and freezing samples. Depending on the concentration of reagents the efficiency of obtaining magnesium hydroxide fell within the range of 88–99%, whereas the specific surface area – within 115–609 m2 /g, while the high purity of samples above 99% of magnesium hydroxide was maintained.
    Źródło:
    Polish Journal of Chemical Technology; 2020, 22, 2; 73-77
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Możliwości zastosowania odpadów po termicznym przekształceniu osadów ściekowych w materiałach budowlanych
    THE POSSIBLE APPLICATIONS OF WASTE AFTER THERMAL TREATMENT OF SEWAGE SLUDGE IN BUILDING MATERIALS
    Autorzy:
    Smol, Marzena
    Kulczycka, Joanna
    Henclik, Anna
    Gorazda, Katarzyna
    Wzorek, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/chapters/2231429.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    osady ściekowe
    utylizacja termiczna
    popioły lotne
    zagospodarowanie odpadów
    materiały budowlane
    Opis:
    W pracy przedstawiono analizę możliwości zagospodarowania odpadów po termicznym przekształceniu osadów ściekowych w materiałach budowlanych. Taki sposób zagospodarowania popiołów ze spalania osadów ściekowych jest zgodny z założeniami programu „zero odpadów dla Europy” w którym podkreśla się że trwały wzrost gospodarczy jest możliwy poprzez przechodzenie na gospodarkę o bardziej zamkniętym obiegu. Wśród najważniejszych zastosowań popiołów w budownictwie wyróżniono stosowanie popiołu jako składnik mieszaniny surowcowej do produkcji cementu, aktywny dodatek do cementowych spoiw nieorganicznych (betonów i zapraw), składnik nadmiaru surowcowego do produkcji ceramiki budowlanej (cegieł i płytek ceramicznych), składnik spiekanego kruszywa lekkiego oraz substytut piasku i/lub cementu w konstrukcjach drogowych (stabilizowanych podłożach cementowych i nasypach drogowych). W pracy opisano możliwości stosowania popiołów do celów budowlanych, z uwzględnieniem spełnienia zarówno kryteriów technicznych, jak i środowiskowych.
    The paper presents an analysis of the possible applications of waste after thermal treatment of sewage sludge in building materials. This method of incinerated sewage sludge ash (ISSA) management is consistent with the objectives of ‘A zero waste programme for Europe‘, which assumes that sustainable economic growth is possible by moving towards a more circular economy (CE). The most important applications of fly ash in construction industry is the use of ash as a component of a mixture of raw materials for cement production, active additive for cementitious inorganic binder (concrete and mortar), bearing component of the raw material in the manufacture of building ceramics (bricks, ceramic tiles), a component of lightweight aggregate and sand and/or cement substitute in the road constuctions (cement stabilized bases, subbases and embankments). This paper describes the possibility of using fly ash for construction purposes, including to meet both the technical and the environmental criteria.
    Źródło:
    Interdyscyplinarne zagadnienia w inżynierii i ochronie środowiska 6; 342-355
    9788374938976
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biogenic catalysis in sulphide minerals weathering processes and acid mine drainage genesis
    Autorzy:
    Kušnierová, Mária
    Praščáková, Mária
    Nowak, Anna
    Gorazda, Katarzyna
    Wzorek, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/articles/1039326.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    sulphide minerals
    weathering
    acid mine drainage
    biotransformation
    Acidithiobacillus ferrooxidans
    Opis:
    Bioleaching and biogenesis are the main outputs from a large group of environmental processes participating in the natural material cycle, used in raw materials processing. Bio-oxidation reactions are the main basis for bioleaching procedures, often participating in parallel leaching processes. During the leaching processes of polycomponent sulphide substrates, the factor of process selection also plays an important role, being in direct relation to the electric properties and galvanic effect occurring between the individual components of the leaching substrate. This work gives a summary of the results of a research focused on the possibilities of using biotechnological procedures for treatment of Slovak sulphide ores. The object of the research is extraction of valuable metals, undesirable admixtures and degradation of crystal lattice of sulphides for subsequent chemical leaching processing of precious metals. The results of experiments on the existence of biogenic processes in situ on waste dumps from exploitation containing residual sulphides are also presented. The processes result in acid mine drainage water generation. These waters are strongly mineralised (over 48 g/L) and of low pH; that is why they are very caustic. The arsenic content (2.558 mg/L) in outflowing waters from old mines is high and over the limits set by the law.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 1; 33-39
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    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
      Wyświetlanie 1-6 z 6

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