Autor: Czarnota, Joanna - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Biogranulation and Physical Properties of Aerobic Granules in Reactors at Low Organic Loading Rate and with Powdered Ceramsite Added
Autorzy:: Czarnota, Joanna
Masłoń, Adam
Powiązania:: https://bibliotekanauki.pl/articles/123107.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: aerobic granular sludge
powdered ceramsite
biogranulation
organic loading rate
Opis:: In wastewater treatment, aerobic granular sludge (AGS) technology is a relatively new alternative to the activated sludge method. The biogranulation of biomass ensues when appropriate environmental conditions in a reactor are ensured, and one of the factors determining this is the organic loading rate (OLR). As a literature review suggests, the optimal values of OLR for AGS technology are in the range of 2.50–7.50 g COD/(dm³∙d), the aim of the work detailed here was to evaluate the impact of powdered ceramsite on biogranulation in two Granular Sequencing Batch Reactors (GSBRs) in which OLR was equal to just 2.10 g COD/(dm³∙d) (R1) and 1.0 g COD/(dm³∙d) (R2). The research was carried out in laboratory scale with using synthetic wastewater containing different concentration of organic compounds. In the course of the research, a more intensive process of biogranulation was noted in reactor R1, and mean diameters of granules on the last day of experimentation were 962 and 274 µm for R1 and R2, respectively. While the organic loading rate equal to 2.10 g COD/(dm³∙d) could allow granule formation, the results also pointed that lower food-to-microorganism (F/M) ratios favour biogranulation. This parameter was indirectly affected by the application of powdered ceramsite, because the powdered material improved the sludge sedimentation properties (average values of SVI₃₀ being 30.1±12.8 and 36.9±10.9 cm³/g). The result of this was more-limited leaching of biomass from reactors (with average values for MLVSS at 4.37±1.23 and 3.03±0.67 g/dm³).
Źródło:: Journal of Ecological Engineering; 2019, 20, 9; 202-210
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Efficiency of Brick Dust and Powdered Ceramsite in the Phosphorus Removal from Wastewater
Autorzy:: Masłoń, Adam
Czarnota, Joanna
Powiązania:: https://bibliotekanauki.pl/articles/124395.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: phosphorus
wastewater
phosphorus removal
powdered materials
ceramsite
brick dust
Opis:: The biological methods of removing the phosphorus compounds from wastewater as applied currently at treatment plants may no longer be regarded as sufficient. They can therefore be augmented with physicochemical methods, raising the efficiency of the wastewater treatment system. Indeed, almost all large urban wastewater treatment plants practice precipitation of phosphorus using salts of iron and aluminum in the form of chemical coagulants. Nevertheless, the search for new ways of assisting with the removal of the biogenic element from wastewater, e.g. by dosing bentonites, fly ash and post-technological sludge from water treatment stations, or even unconventional organic sorbents such as rice husks, is ongoing. A further unconventional material in the P-removal from wastewater may take the form of powdered mineral materials. The work presented here shows the results of laboratory scale trials on the P-removal using brick dust and powdered ceramsite (expanded clay).
Źródło:: Journal of Ecological Engineering; 2020, 21, 2; 63-71
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Physicochemical Properties of Marl and Travertine and their Thermally Modified Forms in the Perspective of Phosphorus Removal from Wastewater
Autorzy:: Gubernat, Sylwia
Masłoń, Adam
Czarnota, Joanna
Koszelnik, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/24201764.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: wastewater treatment
green chemistry
ecotechnology
reactive material
adsorption
phosphorus
Opis:: The paper presents physicochemical studies of nine reactive materials for removing phosphorus from wastewater and water. The materials under analysis are raw forms of marl and travertine along with their thermally treated forms at temperatures of 500 °C, 650 °C, 700 °C (travertine), 700 °C, 900 °C, 1000 °C (marl) and the commercial material Polonite®. The scope of the research included morphological analysis and elemental composition, specific surface area, pore volume and diameter, losses on ignition and the amount of elements leached from materials. The results of the research allowed assessing the impact of physicochemical properties and thermal modification on the efficiency of phosphorus binding by these materials. All the tested sorbents show the highest calcium content among the elements with the ability to bind phosphorus. The size of the specific surface does not determine the efficiency of phosphorus retention by the tested materials; therefore it is advisable to study the mechanism of its binding. The thermal modification process, along with the increase in the treatment temperature, improves the regularity of marl and travertine structures, which also manifests itself in increasing the efficiency of phosphorus removal.
Źródło:: Journal of Ecological Engineering; 2023, 24, 5; 56--65
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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