Temat: Insulation barriers - Katalog OPAC zbiorów

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Tytuł:: Assessment of the sorption properties of materials proposed for the construction of insulation barriers
Autorzy:: Sobik-Szołtysek, J.
Bień, J.
Grosser, A.
Powiązania:: https://bibliotekanauki.pl/articles/207055.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: acid solution
batch methods
Insulation barriers
landfill site
Langmuir isotherm
Freundlich isotherm
mineral wastes
roztwor kwasu
metoda wsadowa
bariera izolacyjna
składowiska odpadów
izoterma Langmuira
izoterma Freundlicha
odpady mineralne
Opis:: Sorption properties of fine-grain mixtures of mineral waste proposed for construction of separation screens in landfill sites have been examined. The removal of heavy metals by the mixtures analysed was evaluated by the static batch method. It was found that they characterize by high ability to remove heavy metals at the level of over 99%, even with high contents of these elements. The sorption parameters have been determined based on the Langmuir and Freundlich isotherms. The alkaline character of some components of mixtures provides stabilization of pH, preventing removal of heavy metals to the environment in response to contact a barrier with acid solutions.
Źródło:: Environment Protection Engineering; 2016, 42, 1; 169-189
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Evaluation of soil permeability from consolidation analysis based on Terzaghi’s and Biot’s theory
Autorzy:: Dobak, P.
Gaszyński, J.
Powiązania:: https://bibliotekanauki.pl/articles/2060271.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: consolidation
cohesive soils
Terzaghi’s theory
Biot’s theory
permeability
geological barriers
insulation properties
Opis:: Proper evaluation of permeability parameters has a crucial signification in multi-scale prediction of consolidation. Drainage path is connected with the time of one-dimensional consolidation in Terzaghi’s theory and numerous later solutions. That is why the evaluation of permeability factor allows to model the settlement’s time of geological layers based on results obtained on a laboratory scale. Numerous tests show a difference of the consolidation degree obtained from one-dimensional strain course and pore pressure distribution. Evaluation of consolidation coefficient cv based on a newly proposed method allows better understanding of the basic reasons of unconventional behaviour of tested soils. Unparallel characteristics of strain and pore pressure distribution show important role of soil’s skeleton creep and its relation to permeability aspects. Solutions proposed by Biot’s theory allow analysing the different velocity of strain and pore pressure distribution. The article presents a new approximated method based on Terzaghi’s theory and evaluation of parameters which are necessary in application of Biot’s one–dimensional solution. These parameters are connected with compressibility and coefficient of permeability. The goal of presented methodological studies is comparison between permeability obtained from application of Terzaghi’s and Biot’s theory. It allows trying to explain physical reasons of differences between applied models and testing results, and improving the methodology of one–dimensional consolidations tests.
Źródło:: Geological Quarterly; 2015, 59, 2; 373--381
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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