Silification of the Mesozoic Rocks Accompanying the Bełchatów Lignite Deposit, Central Poland

Pękała, Agnieszka

doi:10.3390/geosciences10040141

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…The microstructure of cristobalite and tridymite resembles that of sponge needles, which contributes a substantial amount of free space to the material. In addition, silica in the form of opal (low-crystalline) fills rock with pores (Pekala 2020).…”

Section: Resultsmentioning

confidence: 99%

Study the characteristics of porcellanite rocks and applied as a sorbent for removing crude oil

AL-Bidry,

Al-Najar,

Al-Wassity

2023

Applied Earth Science

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The utilization of porcellanite rocks as a natural inorganic sorbent for crude oil sorption was investigated in this study. The experiments were achieved in batch operation, the efficiency of porcellanite was studied with different quantities of sorbent weight, grain size, mixing times and temperature. The effect of oil-water mixture pH on the sorption effectiveness of porcellanite at various pH value was tested. Porcellanite was chemically treated with HCl and NaOH to enhance the effectiveness of oil removal. The results show that porcellanite had good sorption effectiveness for crude oil at various pH and temperature. The maximum crude oil removal (82.2%) was obtained at a mixing duration of 20 min at room temperature and 3 g raw porcellanite with grain size 250 µm. Under optimized conditions, the raw porcellanite was found to adsorb about 82.2% of oil in the prepared sample. The study demonstrated that porcellanite has significant potential as a low-cost sorbent for oil spill cleanup.

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Section: Resultsmentioning

confidence: 99%

Study the characteristics of porcellanite rocks and applied as a sorbent for removing crude oil

AL-Bidry,

Al-Najar,

Al-Wassity

2023

Applied Earth Science

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“…It is the youngest generation of silica ( Figure 9 B). Penetrating primary calcite cement of red luminescence is visible in the observed rock matrix [ 67 ].…”

Section: Resultsmentioning

confidence: 99%

“… Examples of diffractometric curves. SiO 2 —silica phases in the form of opal (CT varieties relative to C), Q—quartz, M—mica, Min.—clayey minerals [ 67 ]. …”

Section: Figurementioning

confidence: 99%

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Modelling the Leachability of Strontium and Barium from Stone Building Materials

Pękała

Musiał

2021

Materials

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In order that the impact on the environment and human beings can be assessed, it may prove necessary for geochemical research work to entail determinations of concentrations of trace elements in building materials, and it is also likely that this will be a time-consuming and financially-demanding business. Additionally, once basic research has been carried out to determine the mineral composition and structural and textural features, it will then be important to determine concentrations of elements that affect the surrounding natural environment and the health of human beings. This paper thus describes mineralogical and geochemical analyses performed on the stone material that opoka rocks represent. Mineralogical studies have shown that the studied opoka rocks most often have cryptocrystalline silica dispersed among carbonate components. The texture of the rock is slightly porous. Silica in the form of type opal A and CT (cristobalite–tridymite) is the main mineral component of the opoka rocks. Carbonate minerals represented by calcite were an important component in the opoka rocks. Earlier geochemical studies focused on the concentration of Sr and Ba. However, the determination of the leachability of these elements as a function of time is a novelty in this study. Trace elements leached from the material matrix were made subject to determinations. The MATLAB program was used to assess leachability in the cases of both strontium and barium, by reference to the Mamdani–Assilian fuzzy algorithm. The presented work has thus sought to experiment with the use of statistical methods to monitor the effectiveness of geochemical processes taking place over time.

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Pyritization in Stone-Building Materials Modeling of Geochemical Interaction

Pękała

Musiał²,

Galek³

2022

Sustainability

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Stone-building materials, despite their natural origin, must be tested for the concentration of trace elements necessary to assess their impact on the environment and humans. In addition to basic research determining their mineral composition and structural and textural features, it is important to analyze the geochemical interactions between the material matrix and the concentration of elements that have a negative impact on the surrounding natural environment and our health. In the presented study, mineralogical and geochemical studies were carried out on the Carpathian sandstones. It was shown that the studied sandstones are represented by lithic wackes and sublithic arenites. Rocks subject to the secondary process of sulfide mineralization were observed among sublithic arenites. Pyrite in the studied geomaterials took various forms. A detailed geochemical analysis was carried out in the material in which iron sulfides acted as a binder. The research was aimed at identifying possible variations in the concentration of elements, with a particular emphasis on the contact between the silica and mineralized phases. The assessment of the geochemical interaction of iron sulfides with silica at a successively enlarged measurement was carried out using the Mamdani–Assilian fuzzy inference model.

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Silification of the Mesozoic Rocks Accompanying the Bełchatów Lignite Deposit, Central Poland

Cited by 4 publications

References 23 publications

Study the characteristics of porcellanite rocks and applied as a sorbent for removing crude oil

Study the characteristics of porcellanite rocks and applied as a sorbent for removing crude oil

Modelling the Leachability of Strontium and Barium from Stone Building Materials

Pyritization in Stone-Building Materials Modeling of Geochemical Interaction

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