scholarly journals Case Study of Pharmaceutical Ingredients Derived from Clay Minerals

2015 ◽  
Vol 48 (3) ◽  
pp. 221-229
Author(s):  
Su-Eon Jin ◽  
Jangik Ike Lee ◽  
Sung-Joo Hwang
Keyword(s):  
Clay Minerals ◽  
Pharmaceutical Ingredients

Formation Pressure Estimation and Miocene Clay Minerals Assemblages Identification, Drilling Challenges and Mitigation, Integrated Case Study, Gulf of Suez, Egypt

2015 ◽  
Author(s):  
Khalid Abdallah ◽  
Wael El Sherbeny ◽  
M. Darwish ◽  
M. El Kammar ◽  
Mohamad Gouda ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Gulf Of Suez ◽  
Formation Pressure ◽  
Pressure Estimation

scholarly journals Characteristics of Shale Wettability by Contact Angle and Its Influencing Factors: A Case Study in Songliao

2021 ◽  
Vol 9 ◽  
Author(s):  
Haitao Xue ◽  
Zhentao Dong ◽  
Shansi Tian ◽  
Shuangfang Lu ◽  
Ce An ◽  
...  
Keyword(s):  
Contact Angle ◽  
Clay Minerals ◽  
Influencing Factors ◽  
Aqueous Media ◽  
Mineralogical Composition ◽  
Low Salinity ◽  
Pre Treatment ◽  
Set Up ◽  
Angle Method

Wettability is a significant factor in the exploration and development of shale oil. Currently, shale wettability has yet to reach a unified understanding. The contact angle is widely used in the study of shale wettability. However, the pre-treatment of the shale profoundly affects the contact angle. In this paper, the contact angle errors introduced by the pre-treatment of samples are discussed. Shale wettability is influenced by many factors, and there is not yet a systematic study of its influencing factors. Based on the above issues, the shale of the northern Songliao Basin was taken as the subject. The wettability of the different lithofacies is characterized by an improved contact angle method. The compositional characteristics of the shales and oil in the study area were analyzed. Fresh minerals, a single component of oil, and different temperature/pressure conditions were set up to investigate the influencing factors of shale wettability. The studies show that Organic matter abundance and thermal maturity have a positive correlation with oil-wet. Siliceous minerals are positively correlated with water-wet. Carbonate and clay minerals are negatively correlated with water-wet. The mineralogical composition of the shale, the composition of the oil, the characteristics of the aqueous media, the asphaltene deposits on the surface, temperature, and pressure all impact wettability. The affinity of minerals for hydrocarbons is iron minerals > carbonate minerals > clay minerals > siliceous minerals. Minerals are more hydrophilic at low salinity conditions. The deposition of non-hydrocarbons and asphaltenes renders the surface oleophilic. Increasing temperatures will reduce the hydrophilicity of the “oil-water-rock”.

An original molecular approach to the use of clay minerals in the formulation of oil-based dyes and their sensitivity toward polar solvents - A case study

2019 ◽  
Vol 147 ◽  
pp. 142-149
Author(s):  
Thiago G. Costa ◽  
Beatriz Felix Pimenta da Silva ◽  
Lucas Palma Mattos ◽  
Diogo Alexandre Siebert ◽  
Gustavo A. Micke ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Molecular Approach ◽  
Polar Solvents

Thermogravimetry/evolved water analysis (TG/EWA) combined with XRD for improved quantitative whole-rock analysis of clay minerals in sandstones

Clay Minerals ◽  
1995 ◽  
Vol 30 (1) ◽  
pp. 27-38 ◽  
Author(s):  
D. M. Thornley ◽  
T. J. Primmer
Keyword(s):  
Clay Minerals ◽  
Clay Mineral ◽  
Water Analysis ◽  
Infrared Detector ◽  
Size Fraction ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Northern North Sea ◽  
Rock Analysis

AbstractCurrent methods of quantitative whole-rock clay mineral analysis of sandstones often provide little more than an estimate of clay mineral abundances, especially where the total clay mineral content is <10 wt% of the sandstone. More accurate determinations of clay mineral abundance in the whole rock can be made by combining thermogravimetry/evolved water analysis (TG/EWA) and X-ray diffraction (XRD) data. The TGA/EWA system incorporates a purpose built thermobalance linked to a water specific infrared detector which is used to measure quantitatively the clay mineral dehydroxylation water evolved from the whole rock when heated from 250°C to 900°C. This gives a measure of the total hydroxyl content of the clay minerals in the whole rock which, when combined with XRD analysis of a separated clay size-fraction, enables individual clay mineral abundances in the whole-rock sample to be determined. Results on artificial sand/clay mineral mixtures prepared with known amounts of different clay minerals (chlorite, illite and kaolinite) show that the accuracy of the combined method is most influenced by the accuracy of the XRD data. Errors associated with TG/EWA were found to be negligible by comparison. A case study is included in which the technique has been used to determine accurately the illite abundance in the Magnus Sandstone Reservoir, Northern North Sea.

The challenge of improved secretory production of active pharmaceutical ingredients inSaccharomyces cerevisiae: A case study on human insulin analogs

2013 ◽  
Vol 110 (10) ◽  
pp. 2764-2774 ◽  
Author(s):  
Ali Kazemi Seresht ◽  
Eva A. Palmqvist ◽  
Gerd Schluckebier ◽  
Ingrid Pettersson ◽  
Lisbeth Olsson
Keyword(s):  
Human Insulin ◽  
Active Pharmaceutical Ingredients ◽  
Insulin Analogs ◽  
Pharmaceutical Ingredients ◽  
Secretory Production

scholarly journals Occurrence and stability of organic intercalation in clay minerals from permafrost-affected soils in the High Arctic – A case study from Spitsbergen (Svalbard)

Geoderma ◽  
2022 ◽  
Vol 408 ◽  
pp. 115591
Author(s):  
Wojciech Szymański ◽  
Marek Drewnik ◽  
Mateusz Stolarczyk ◽  
Łukasz Musielok ◽  
Magdalena Gus-Stolarczyk ◽  
...  
Keyword(s):  
Clay Minerals ◽  
High Arctic

Bentonite clay minerals mapping using ASTER and field mineralogical data: A case study from the eastern Rif belt, Morocco

2021 ◽  
pp. 100640
Author(s):  
Othmane Lamrani ◽  
Ayoub Aabi ◽  
Abdellah Boushaba ◽  
Mohamed Tobbal Seghir ◽  
Zakaria Adiri ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Bentonite Clay ◽  
Rif Belt
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