The role of thermal analysis in the evaluation of impure clay deposits as mineral raw materials

Clay Minerals ◽  
1969 ◽  
Vol 8 (2) ◽  
pp. 171-192 ◽  
Author(s):  
J. A. Bain ◽  
D. J. Morgan
Keyword(s):  
Thermal Analysis ◽  
Raw Materials ◽  
Chemical Properties ◽  
High Alumina ◽  
Clay Deposits ◽  
Effect Of Impurities ◽  
And Control ◽  
Physical And Chemical

Although Thermal Analysis is a useful technique in characterizing the clay constituent of a potentially valuable clay deposit, it is, perhaps, even more useful when the type and amount of non-clay impurities are important factors in its commercial appraisal. The effect of impurities on the physical and chemical properties of the clay may determine its potential uses in bulk, or it may be advisable to remove the impurity, either to improve the grade and quality of the clay or to provide a useful by-product. The application of both qualitative and quantitative thermal data, in the analysis and control of laboratory work in this field, is demonstrated by its use in the assessment of materials such as evaporite-rich clays, siliceous clays, and high-alumina clays.

PRODUÇÃO DE MUDAS DE Eucalyptus dunnii EM SUBSTRATOS RENOVÁVEIS

FLORESTA ◽  
2013 ◽  
Vol 43 (1) ◽  
pp. 125 ◽  
Author(s):  
Dagma Kratz ◽  
Ivar Wendling
Keyword(s):  
Raw Materials ◽  
Chemical Properties ◽  
Total Porosity ◽  
Exchange Capacity ◽  
Pine Bark ◽  
Coconut Fiber ◽  
Rice Hulls ◽  
Eucalyptus Dunnii ◽  
Physical And Chemical

A necessidade premente de aumento no número de mudas plantadas anualmente e a variabilidade de matérias-primas tradicionais para composição de substratos têm levado à necessidade de desenvolvimento de estudos que visem à avaliação da viabilidade técnica e econômica desses materiais. Com base nisso, o presente estudo objetivou avaliar a viabilidade técnica da utilização de vermiculita média (VM) e dos componentes renováveis à base de fibra de coco (FC), casca de arroz carbonizada (CAC) em diferentes granulometrias e dois substratos comerciais compostos por casca de pínus semidecomposta (SC) na composição de substratos para a produção de mudas de Eucalyptus dunnii, e avaliar a correlação das propriedades físicas e químicas dos substratos com a qualidade das mudas. Foram formulados 14 tratamentos, sendo a semeadura realizada em tubetes de 55 cm³. Com base nos resultados obtidos, o substrato que proporcionou maior crescimento das mudas de Eucalyptus dunnii foi o CAC combinado com VM, seguido dos SC, enquanto aqueles à base de CAC em diferentes granulometrias, combinadas ou não com FC, proporcionaram baixo crescimento. Quanto às propriedades dos substratos, verificou-se que densidade aparente, porosidade total, macroporosidade, pH e capacidade de troca catiônica apresentaram correlação com o crescimento das mudas.Palavras-chave: Eucalipto; casca de arroz carbonizada; fibra de coco; casca de pínus.AbstractSeedlings of Eucalyptus dunnii grown in renewable substrate. The pressing need to increase the number of seedlings planted annually and variability of raw materials for traditional composition of substrates have led to the need to develop studies aimed at evaluating these materials, technically and economically feasible. Based on this, the present study aimed to evaluate the technical feasibility of using fine vermiculite (VF) and component-based renewable coconut fiber (FC), rice hulls (CAC) in different grain sizes and two commercial substrates composed by pine bark semidecomposta (SC) in the composition of substrates for the production of seedlings of Eucalyptus dunnii, and assess the correlation between the physical and chemical properties of the substrates with the quality of the seedlings. 14 treatments were formulated, and the sowing in tubes of 55 cm³. Based on these results, the substrate that provided greater seedling growth of Eucalyptus dunnii CAC was combined with VF, followed by the SC, while those based CAC in different particle sizes, combined or not with CF, gave low growth. Regarding the properties of the substrates, it was identified that the bulk density, total porosity, macroporosity, pH and cation exchange capacity correlated with seedling growth.Keywords: Eucalyptus; rice hulls; coconut fiber; pine bark. 

scholarly journals Prospects for the use of fruit enhancers in bakery technology for healthy diet

2021 ◽  
Vol 845 (1) ◽  
pp. 012091
Author(s):  
K V Bryksina ◽  
O V Perfilova ◽  
E I Popova
Keyword(s):  
Nutritional Value ◽  
Raw Materials ◽  
Chemical Properties ◽  
Physicochemical Characteristics ◽  
Bakery Products ◽  
Human Diet ◽  
New Varieties ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Bread is a useful biological product that remains high in the human diet and contains a large amount of substances necessary for the human. A rational way to expand the range of functional bakery products is to integrate natural plant-based ingredients into the formulation, which will increase the nutritional value of products, improve their sensory and physicochemical characteristics, create a group of new varieties, boost production, advance the quality of raw materials with low properties and save the critical and accessory raw materials. The paper discusses the effect of fruit enhancers on the physical and chemical properties of dough and finished bakery products. The paper proposes optimal dosages of fruit powders.

scholarly journals Effects of Various Agroindustrial Wastes on Nutrition Yield and Quality of Canola (Brassica napus L.)

2018 ◽  
Vol 11 (1) ◽  
pp. 33-40
Author(s):  
Müzeyyen Seçer ◽  
Lütfü Elmaci Ömer ◽  
Şafak Ceylan
Keyword(s):  
Brassica Napus ◽  
Maximum Yield ◽  
Chemical Properties ◽  
Agricultural Crop ◽  
Mineral Fertilization ◽  
Brassica Napus L ◽  
Yield And Quality ◽  
And Control ◽  
Physical And Chemical

Introduction:Canola is an important agricultural crop generally grown for oil and biofuel generation.Materials and Methods:The agroindustrial solid wastes of oregano and cumin wastes were used in a vegetation experiment to determine their effect on the nutrition, yield and quality of the canola plant (Brassica napusL.) The experiment was performed on 12 plots of 6 m2and was conducted with four treatments of composted oregano and cumin wastes, mineral fertilization and control in three replications. Physical and chemical properties and macro-micro nutrients were determined in the soils at the beginning and the end of the experiment.Results and Discussion:The leaves showed sufficient levels of N, P, K, Ca, Mg and low sufficient levels of Na, Fe, Cu, Zn and Mn. The boron content of the leaves was insufficient. Manganese and B were affected significantly by the applications. The applications did not affect plant height, shoot and carob number per plant, and seed numbers per carob significantly. Statistically, the highest number of plants per m2was observed in the plots to which cumin wastes were applied, and these plots also showed the maximum yield.Conclusion:Seed yield, protein and oil percentages were not affected significantly by the applications.

scholarly journals Strand thinning of Khadrawi date palm cultivar in relation to yield and fruit quality

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
A. R. Moustafa ◽  
N. Abdel-Hamid ◽  
A. Abd El-Hamid ◽  
M. R. El-Sonbaty ◽  
S. K. M. Abd El-Naby
Keyword(s):  
Fruit Quality ◽  
Date Palm ◽  
Chemical Properties ◽  
Fruit Weight ◽  
Total Sugars ◽  
Palm Fruits ◽  
And Control ◽  
Physical And Chemical ◽  
And Chemical Properties

Abstract Background This experiment was carried out during 2015 and 2016 seasons to investigate the effect of strand thinning treatments by removing 15 and 30% of the total number of strands from the bunch center after 8 weeks from pollination (kimri stage) on productivity and fruit quality of Khadrawi date palm cultivar compared to the control (without thinning). Results The present results indicated that strand thinning by removing 30% of the total number of strands gave the lowest bunch weight and yield per palm compared to thinning 15% and control treatments during the two seasons of study. Also, removing 30% of the total number of strands improved some physical properties, i.e., fruit weight, flesh weight, fruit length, and fruit diameter than control in both seasons. All strand thinning treatments improved some chemical properties such as TSS %, total sugars %, and reducing sugars % than control (without thinning). However, both 15 and 30% strand thinning treatments had no significant effect on nonreducing sugars %, total acidity %, and tannins content in the two studied seasons. Conclusion From the obtained results, it was revealed that application of thinning treatment by removing 15 or 30% of the total number of strands from bunch center improved some physical and chemical properties of Khadrawi date palm fruits although there are no significant differences found between strand thinning at 15% and control during the second season.

scholarly journals O.I. Glazova and Her Contribution to the Development of Domestic Emergency Clinical Toxicology

2020 ◽  
Vol 8 (4) ◽  
pp. 466-473
Author(s):  
Y. S. Goldfarb ◽  
S. A. Kabanova ◽  
M. M. Potskhveriya ◽  
V. I. Sleptsov
Keyword(s):  
Professional Competence ◽  
Chemical Properties ◽  
Quantitative Measure ◽  
Scientific Activity ◽  
The Body ◽  
Clinical Toxicology ◽  
Medical Sciences ◽  
Physical And Chemical

The biography of Olga Ivanovna Glazova, doctor of medical sciences, honored doctor of the RSFSR, member of the Scientific Council of the N.V. Sklifosovsky Research Institute, is an example of an exceptionally successful diversification of scientific activity, both in the field of cardiology and clinical toxicology, which is the new direction of Russian medicine.There are suggestions in the works of O.I. Glazova similar to modern ideas of acute poisonings (AP), as confirmed by later publications in this field. The pathogenetic approach to the study of AP was considered by O.I. Glazova from the perspective of the teachings of I.P. Pavlov about the body as a single entity, and the action of the poison hypothetically dependent on its concentration in the blood. She emphasized the need for the early removal of poison from the body to prevent the adverse course of poisoning. The role of antidote therapy as an example of a detoxification approach to the treatment of AP was noted, while antidotes for parenteral administration were recommended in order to increase the effectiveness of detoxification.Some thoughts were expressed about the dependence of the toxic effects of poisons on physical and chemical properties, as well as similar ideas about the quantitative measure of poisoning, selective and situational toxicity, the presence of concentration, space and temporal factors in the pathogenesis of poisoning. The systematization of the AP was presented.Thus, O.I. Glazova made a significant contribution to the study of AP thanks to her enthusiasm, constant creative eagerness and high professional competence, which contributed to a significant growth the role of representatives of the emergency medical clinic in AP treatment, and in turn positively affected the regularity and quality of further research in this area.Authors declare lack of the conflicts of interests.

Analysis of the Degradation of External Plasters in the Buildings with ETICS

2014 ◽  
Vol 1041 ◽  
pp. 15-18
Author(s):  
Veronika Kučeriková ◽  
Michal Kraus ◽  
Darja Kubečková
Keyword(s):  
Carbon Dioxide ◽  
Composite System ◽  
Raw Materials ◽  
Chemical Properties ◽  
Ambient Air ◽  
Temperature Extremes ◽  
Biological Degradation ◽  
Physical And Chemical ◽  
And Chemical Properties

The external plaster are currently the most common finish coat of buildings. The characteristic technological and chemical properties of plasters protect supporting structure against weather and temperature extremes. Quality of plaster is determined by its durability, which depends primarily on the quality of raw materials, the quality and porosity of the substrate, the temperature during application, concentration of carbon dioxide and humidity of the ambient air. The physical and chemical and biological degradation of plaster is caused due to weathering and exposure to aggressive substances of environment. The paper deals with the analysis of the causes of degradation (green facades) and the possibilities of remediation of biotic attack of plasters buildings with External Thermal Insulation Composite System (ETICS).

scholarly journals Physical and chemical characteristics of goldenberry (Physalis peruviana) grown in Lam Dong province, Vietnam

Food Research ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 1217-1225
Author(s):  
N.M. Thuy ◽  
N.P. Phuong ◽  
C.T.D. Suong ◽  
N.V. Tai
Keyword(s):  
Ambient Temperature ◽  
Shelf Life ◽  
Raw Materials ◽  
Chemical Properties ◽  
Volume Density ◽  
Viet Nam ◽  
Physalis Peruviana ◽  
C Value ◽  
Physical And Chemical

This work was carried out to determine the physical and chemical properties of goldenberry fruit (Physalis peruviana L.) grown in Lam Ha and Don Duong of Lam Dong province in Viet Nam. The shelf-life and quality of fruits during storage time at ambient temperature (28±2oC) were also analysed. The analysis results recorded that most of the physical properties of the fruit grown in the two locations (Lam Ha and Don Duong of Lam Dong province, Viet Nam) yielded no significant differences, except the volume, density, hardness and colour of the fruit. The fruit grown in Lam Ha has a lighter colour and yellow intensity (higher a* and C value) than the ones grown in Don Duong, while the fruits are grown in Don Duong are darker (lower L* and higher Ho). In addition to its attractive properties in terms of colour, aroma and taste, they also contain moderate levels of vitamins (C and A), antioxidants (polyphenols), minerals (especially high content of phosphorus) and fibre. Fruit grown in Don Duong had a higher sweetness than those grown in Lam Ha (the ratio of sugar and acid was 2.7 times more). The concentration of bioactive compounds in the goldenberry fruits grown in Lam Ha and Don Duong were almost similar. The shelf-life of goldenberries up to 20 to 22 days at the ambient temperature of about 28±2oC and 75-80% RH but the quality and sensory characteristics of goldenberry raw materials were declined.

Diesel Biofuels - Preparation, Characterization and Testing

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Cristina Dusescu ◽  
Anca Borcea ◽  
Vasile Matei ◽  
Ion Popa ◽  
Irina Gabriela Radulescu
Keyword(s):  
Vegetable Oils ◽  
Sunflower Oil ◽  
Raw Materials ◽  
Chemical Properties ◽  
Soya Bean ◽  
Production Unit ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

The present paper studies biodiesel samples preparation by transesterification and compares their physical and chemical properties (biofuels prepared from different raw materials - vegetable oils: sunflower oil, crocus oil and soya bean oil) and the biodegradability degree, as well as the possibilities of the integration of such production unit in industrial diagram of auto fuels production.

scholarly journals Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Adele Brunetti ◽  
Francesca Macedonio ◽  
Giuseppe Barbieri ◽  
Enrico Drioli
Keyword(s):  
Current Status ◽  
Innovative Technology ◽  
Water Recovery ◽  
Treatment Unit ◽  
Treatment Stage ◽  
Treatment Technologies ◽  
Pre Treatment ◽  
And Control

Abstract The recent roadmap of SPIRE initiative includes the development of “new separation, extraction and pre-treatment technologies” as one of the “key actions” for boosting sustainability, enhancing the availability and quality of existing resources. Membrane condenser is an innovative technology that was recently investigated for the recovery of water vapor for waste gaseous streams, such as flue gas, biogas, cooling tower plumes, etc. Recently, it has been also proposed as pre-treatment unit for the reduction and control of contaminants in waste gaseous streams (SOx and NOx, VOCs, H2S, NH3, siloxanes, halides, particulates, organic pollutants). This perspective article reports recent progresses in the applications of the membrane condenser in the treatment of various gaseous streams for water recovery and contaminant control. After an overview of the operating principle, the membranes used, and the main results achieved, the work also proposes the role of this technology as pre-treatment stage to other separation technologies. The potentialities of the technology are also discussed aspiring to pave the way towards the development of an innovative technology where membrane condenser can cover a key role in redesigning the whole upgrading process.

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