scholarly journals Chemical Composition of Straw as an Alternative Material to Wood Raw Material in Fibre Isolation

2016 ◽  
Vol 67 (2) ◽  
pp. 119-125 ◽  
Author(s):  
Ivana Plazonić ◽  
Željka Barbarić-Mikočević ◽  
Alan Antonović
Keyword(s):  
Chemical Composition ◽  
Raw Material ◽  
Alternative Material

Analysis on Calcination of Cementitous Powder of Waste Concrete for Raw Cement

2013 ◽  
Vol 831 ◽  
pp. 267-271 ◽  
Author(s):  
Eun Hee Kwon ◽  
Young Jun Lee ◽  
Gyu Hwan Cho ◽  
Cheon Park Dong
Keyword(s):  
Chemical Composition ◽  
Greenhouse Gas ◽  
Raw Material ◽  
Fine Aggregate ◽  
Waste Concrete ◽  
Alternative Material

The purpose of this study is to determine whether cementitous powder of waste concrete which is separated from waste concrete can be used as alternative raw material for limestone. Chemical composition of cementitous powder of waste concrete was actually analyzed and the experiment to measure the recovery of hydration of waste cementitous powder model was performed. As a result, hydration was recovered to the level at which it can be used as alternative raw material for limestone, but less than 10 % can be used due to mix of fine aggregate in less than 150μm which cannot be separated from cementitous powder. Therefore, development of technology to efficiently separate cementitous powder of fine aggregate is required to have the alternative material for limestone and effect for reduction of greenhouse gas.

PEAS AND PRODUCTS OF ITS PROCESSING OF - NONCONVENTIONAL RAW MATERIAL RESOURCES

2020 ◽  
Author(s):  
D.Y. Bolgova ◽  
◽  
N.A. Tarasenko ◽  
Z.S. Mukhametova ◽  
◽  
...  
Keyword(s):  
Chemical Composition ◽  
Human Health ◽  
Food Production ◽  
Food Industry ◽  
Raw Material ◽  
Plant Proteins ◽  
Material Resources ◽  
The Rich

Nutrition is an important factor that affects human health. The use of plant proteins as various additives in food production has now been actively developed. The rich chemical composition of pea grains determines the possibility of application in the food industry. Peas are characterized by good assimilability and degree of digestion.

scholarly journals Geochemistry and Mineralogy of Ice-Dammed Lake Sediments of the Lębork Deposit

2021 ◽  
Author(s):  
Radosław Rogoziński ◽  
Alina Maciejewska
Keyword(s):  
Chemical Composition ◽  
Lake Sediments ◽  
Inductively Coupled Plasma ◽  
Mineralogical Composition ◽  
Raw Material ◽  
Element Analysis ◽  
X Ray ◽  
Dominant Component ◽  
Clay Deposits ◽  
Dammed Lake

AbstractVarved clay deposits from ice-dammed lakes are a particularly important and broadly applied raw material used for the production of high-quality ceramics (red bricks, roof tiles, etc.), but the mineralogy and geochemistry of these sediments are not fully understood. The aim of the present study was to determine the chemical and mineralogical composition of ice-dammed lake sediments of the Lębork deposit. Major-element analysis of the compositions of selected samples from the ice-dammed lake clays was performed by X-ray fluorescence (XRF) and trace elements were determined by inductively coupled plasma-mass spectrometry. The mineralogical composition of clay samples was determined by X-ray diffraction (XRD). Analyses of the chemical composition of the ice-dammed lake clays of the Lębork deposit showed that the dominant component was SiO2 with a mean content of 56.13 wt.%; the second most abundant component was Al2O3, with a mean content for the entire deposit of 11.61 wt.%. Analysis by ICP-MS indicated the presence of rare earth elements (REE), e.g. cerium, neodymium, lanthanum, and praseodymium; their mean contents are: 56.9, 27.0, 26.3, and 7.3 ppm, respectively. Mineralogical analysis of the varved clays identified quartz, muscovite, calcite, and clay minerals – illite, kaolinite, and montmorillonite. The material filling the Lębork basin is characterized by small lateral and vertical variability in chemical composition. The results of the present study may be of considerable importance in determining the parent igneous, metamorphic, and sedimentary rocks, the weathering products of which supplied material to the ice-dammed lake, as well as in determining the mechanisms and character of the sedimentation process itself.

The Research of Iron Containing Wastes Modification Process of Leninabad Rare Metals Plant

2021 ◽  
Vol 410 ◽  
pp. 778-783
Author(s):  
Pavel V. Matyukhin ◽  
Daler I. Mirzoev
Keyword(s):  
Chemical Composition ◽  
Building Materials ◽  
Raw Material ◽  
Filling Material ◽  
Rare Metals ◽  
X Ray ◽  
Modification Process ◽  
Before And After ◽  
The Republic ◽  
Enrichment Process

The paper presents the results of ferriferous wastes modification process research carried on the basis of JCS “Leninobad rare metals Plant” located in the Republic of Tajikistan. The wastes for the study were taken from the western tailing. The article presents the justification of the chosen wastes as a filling material in the development of new radiation protective composite building materials. The data on the initial ferriferous chemical composition of the tailing wastes and the chemical composition of the material that passed the enrichment process is presented. The study contains microphotos of ferriferous haematite raw material particles surface before and after completing the modifying process. The paper presents and describes the study of X-ray phase analysis diffractograms of enriched iron-containing wastes before and after the modification process. The current research proves that the enrichment ferriferous wastes particles modification process is possible and as a result it can be used as a filling for the development of new kinds of radioprotective composite materials.

Formulation and evaluation of gluten-free cookies from rice and green banana flour

2021 ◽  
Vol 11 (2) ◽  
pp. 720-726
Author(s):  
Maria Yarla parente ◽  
FABIANA LINHARES ◽  
RENATA ALBUQUERQUE COSTA ◽  
MÁRCIA FACUNDO ARAGÃO
Keyword(s):  
Chemical Composition ◽  
Purchase Intention ◽  
Rice Flour ◽  
Raw Material ◽  
Gluten Free ◽  
Autoimmune Pathology ◽  
Nutritional Characteristics ◽  
Banana Flour ◽  
Hedonic Scale ◽  
Green Banana

Celiac disease (CD) is defined as an autoimmune pathology mediated by specific antibodies and is associated with genetic factors, which causes an inflammatory process of the intestinal mucosa in response to gluten ingestion. A study was conducted to evaluate some gluten-free cookie formulations using rice and green banana flour as raw material, and to evaluate the acceptance and chemical composition of the cookies elaborated. Three different cookie formulations were prepared to contain 100% rice flour, 50% rice flour and 50% green banana flour and 100% green banana flour. The following sensory attributes were evaluated: crispness, flavor, and overall impression, using the 9-point hedonic scale and purchase intention using the 5-point structured scale, to check the acceptance of cookies. The chemical composition of the formulation most accepted by sensory analysis was quantified. Sensory evaluation showed that all cookie formulations were accepted; however, the increase of the green banana flour content has resulted in lower acceptance, which may be due to the slightly bitter flavor that green banana flour gives the product. The most accepted cookie formulation had 15.78% protein, 0.80% ash, 4.31% moisture content, 12.35% lipid, and 66.77% carbohydrate. These nutritional characteristics are following Brazilian legislation. Therefore, all cookie formulations have marketing potential, which is very important, especially for people with gluten sensitivity.

IMPACT OF INNOVATIVE METHOD OF PREPARING TOBACCO LEAVES FOR DRYING ON THE BASIC PARAMETERS OF QUALITY OF TOBACCO RAW MATERIAL

2019 ◽  
Author(s):  
Е.Е. Ульянченко
Keyword(s):  
Chemical Composition ◽  
Quality Indicators ◽  
Raw Materials ◽  
Raw Material ◽  
Tobacco Leaves ◽  
Commercial Grade ◽  
Innovative Method ◽  
Main Indicator ◽  
Basic Parameters

Исследовано влияние приема прорезания средней жилки на основные качественные показатели табачного сырья. Исследования проводили на листьях основных сортотипов табака Трапезонд и Остролист по массовым ломкам. Прорезание жилки осуществляли на инновационном оборудовании экспериментальном образце линии подготовки листьев табака к сушке ЛПТС360 (ВНИИТТИ, Краснодар). Качество табачного сырья с прорезанной жилкой определяли по товарным сортам, технологическим и курительным свойствам, химическому составу по методикам лабораторного контроля ВНИИТТИ. Инновационный способ подготовки табака к сушке в едином потоке с применением технологического оборудования, включающего прорезатель, выявил положительный технологический результат. Установлена эффективность приема прорезания средней жилки: срок естественной сушки листьев с прорезанной жилкой сократился в 2,5 раза выход 1го товарного сорта сырья составил 74,60 87,93 выход волокна сырья с прорезанной жилкой превышает минимальное значение технологических норм (75) в 1,15 1,26 раз условный расход сырья на единицу курительных изделий меньше норматива на 6 25 улучшен основной показатель химического состава табачного сырья (число Шмука) в 1,6 4,6 раза у сортотипа Трапезонд, в 1,2 1,5 раза у сортотипа Остролист дегустационные свойства сырья не ухудшились. Инновационный способ подготовки листьев табака к сушке, включающий прием прорезания средней жилки, рекомендуется для применения в производстве табачного сырья. The influence of middle vein cutting method on the main quality indicators of tobacco raw materials is studied. Studies were carried out on the leaves of the main varieties of tobacco Trapezond and Ostrolist, on mass breakdowns. Vein cutting was carried out on the innovative equipment of the line of preparation of tobacco leaves for drying LPTS360 (GNU VNIITTI RAA, Krasnodar). The quality of tobacco raw materials with a cut vein was determined by commercial grades, technological and Smoking properties, chemical composition in accordance with the methods VNIITTI. An innovative method of preparing tobacco for drying in a single stream with the use of technological equipment, including a cutter, revealed a positive technological result. The period of natural drying of leaves with cut veins decreased by 2,5 times. The yield of the 1st commercial grade of raw materials was 74,60 87,93. The output of the fiber raw material with cut vein exceeds the minimum value of technological norms (75) in 1,15 1,26 times. Conditional consumption of raw materials per unit of Smoking products is less than the norm by 6 25. The method of cutting the middle vein of the leaves improves the main indicator in the chemical composition of tobacco raw materials (Schmuck ratio) 1,6 4,6 times in the variety Trapezond and 1,2 1,5 times in the variety Ostrolist. The tasting properties of raw materials have not deteriorated. Analysis of raw material quality indicators showed that the innovative method of cutting the middle vein is effective and recommended for use in the production of tobacco raw materials.

scholarly journals Kaolinite Claystone-Based Geopolymer Materials: Effect of Chemical Composition and Curing Conditions

Minerals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 444 ◽  
Author(s):  
Pavlína Hájková
Keyword(s):  
Chemical Composition ◽  
Water Glass ◽  
Chemical Elements ◽  
Solidification Process ◽  
Ease Of Use ◽  
Raw Material ◽  
Curing Conditions ◽  
Low Viscosity ◽  
Lower Porosity ◽  
Curing Methods

This work describes the role of chemical composition and curing conditions in geopolymer strength, leachability of chemical elements and porosity. The study focuses on geopolymer material prepared from calcined kaolinite claystone, which is not studied frequently as a raw material for geopolymer production, although it has a high application potential as it is easily commercially available and allows preparation of geopolymers with low viscosity. The composition of geopolymers and their curing methods were selected considering their ease of use in the praxis. Therefore, the potassium water glass itself was used as alkali activator without any KOH or NaOH addition. Chemical composition was changed only by the density of water glass in the range of 1.2 to 1.6 g·cm−3. Geopolymers were cured at a temperature within the range of 5 °C–70 °C to speed up the solidification process as well as by microwave radiation. High compressive strengths were obtained for geopolymers with the highest densities of the water glass (1.5 and 1.6 g·cm−3) in dependence on various curing conditions. Higher strengths were achieved in the case of samples where the solidification was not accelerated. The samples cured at lower temperatures (5 °C) showed lower porosity compared to the other curing types. The lowest leachability of Si and alkalis was reached for the samples with water glass density 1.5 g·cm−3.

scholarly journals Economic analysis of the inclusion of thermoelectric ash in asphalt mixtures

2021 ◽  
Vol 10 (10) ◽  
pp. e28101018564
Author(s):  
Igor Nonato Almeida Pereira ◽  
Newton Paulo de Souza Falcão ◽  
Consuelo Alves da Frota
Keyword(s):  
Asphalt Concrete ◽  
Lower Cost ◽  
Electric Energy ◽  
Asphalt Mixtures ◽  
Raw Material ◽  
Stone Dust ◽  
Alternative Material ◽  
Good Technique ◽  
Materials Used ◽  
The Cost

The replacement of conventional materials used in hot asphalt mixtures with others of good technique and lower cost and environmental impact has motivated research in this area of knowledge in recent decades. The researches should be expanded in the scope of engineering, given that it contributes considerably to the transformation of spaces and raw material. In this context, thermoelectric ashes, which are residues from the production of electric energy, appear as an alternative to replace the stone powder input which contributes negatively to the environment considering that it comes from the blasting of rocks. This work aims to compare the cost of producing traditional asphalt concrete (reference) to asphalt compositions containing 5,15% of alternative material characterized by stone dust. There was a saving of R$ 0.21 per ton of AC machining, consisting of thermoelectric ash as a partial substitute (5.15%) for stone powder, which represents significant savings in a practical context.

scholarly journals Research into the chemical composition of refinery slag from silicon production for its efficient recycling

2021 ◽  
Vol 25 (2) ◽  
pp. 252-263
Author(s):  
N. V. Nemchinova ◽  
V. V. Hoang ◽  
I. I. Aponchuk
Keyword(s):  
Chemical Composition ◽  
Crystalline Silicon ◽  
Raw Material ◽  
Smelting Process ◽  
Elemental Silicon ◽  
Silicon Production ◽  
X Ray ◽  
Industrial Material ◽  
Furnace Slag ◽  
Oxidation Refining

The aim was to investigate the chemical composition of refinery slag obtained during silicon production in order to identify approaches to its further recycling. Research samples were collected from the slag remained after oxidation refining at the JSC Silicon (AO Kremny), RUSAL (Shelekhov, Irkutsk Oblast). The methods of X-ray phase, X-ray fluorescence, metallographic and scanning electron microscopy were employed to investigate the chemical composition of the samples. It was found that the refinery slag under study includes such basic components as elemental silicon, its carbide and oxide, as well as elemental carbon. It was shown that silicon carbide is the product of incomplete reduction, resulting from melting silica-containing ores in a smelting furnace. According to the conducted X-ray fluorescent analysis, the samples also contain (wt %): Ca - 7.40; Al - 3.80; Fe - 0.30; Ba - 0.19; K - 0.14; Na - 0.09; Sr - 0.09; Mg - 0.08; Ti - 0.05; S - 0.02. Calcium and aluminium are present in the slag mostly in the form of oxides. Complex oxides of an anor-thite type were also found: CaO Al2O3 2SiO2. The refinery slag under study also features insignificant amounts of other metal oxides, which are released from the furnace slag forming during the smelting process. The slag produced by oxidation refining during crystalline silicon production is a technogenic raw material containing valuable components. Due to the significant content of silicon in the refinery slag (from 42% to 65%), the existing methods applied to recycle such an industrial material were analysed in terms of additional silicon extraction or production of commercial silicon-containing products, which are in demand in various industries.

scholarly journals Technology Development of Immediately Fished Cuttings for Restaurants

2021 ◽  
Vol 4 (1) ◽  
pp. 87-104
Author(s):  
Iryna Ditrich ◽  
Tetyana Silchuk ◽  
Tetiana Tuz
Keyword(s):  
Chemical Composition ◽  
Raw Material ◽  
Plant Origin ◽  
Functional Ingredients ◽  
Energy Value ◽  
Sesame Seeds ◽  
Optimal Ratio ◽  
Atlantic Mackerel ◽  
Functional Product ◽  
Poppy Seeds

The topicality. The current state of nutrition of Ukraine population is analyzed in the article, draws conclusions about the possible improvement of the situation by creating products from fish raw materials with the addition of functional food ingredients of plant origin, which will have improved organoleptic characteristics and increased energy and nutritional value, as well as recommended as a functional product in the diet of certain categories of the population. Purpose and methods. The purpose of the study is to substantiate the recipe of a new type of fish semi-finished products “Zrazy fish slices chopped with poppy and sesame seeds” with enrichment with their functional ingredients. The object of research is the technology of the semi-finished product “Zrazy fish cut with poppy and sesame seeds”. The subject of the study are semi-finished products “Zrazy fish slices”, semi-finished products “Zrazy fish slices with poppy seeds and sesame seeds”, Atlantic mackerel fillets (DSTU 4378: 2006), sesame seeds (DSTU 7012: 2009) and poppy seeds (DSTU 7696: 2015). Research methods: the research was based on methods of theoretical generalization, comparative analysis, and calculation, organoleptic. Results. The results of theoretical and experimental research of creation of technology of fish semi-finished product “Zrazy fish cut with poppy and sesame seeds” of functional purpose have been shown. The chemical composition of the main raw material of the dish – Atlantic mackerel has been analyzed and its advantages in the recipe composition have been proved. Possibility of using poppy seeds and sesame seeds as functional ingredients in the dish has been confirmed. The organoleptic parameters of the dish were studied and the optimal ratio of poppy seeds and sesame seeds in breadcrumbs has been determined. The nutritional, energy value and vitamin-mineral composition of the dish “Fish slices chopped with poppy and sesame seeds” have been calculated. Conclusions and discussions. The traditional recipe of the dish “Zrazy fish cut” has been analyzed. The expediency of modification of the traditional recipe due to the complete replacement of the main fish raw material with Atlantic mackerel fillet and the functional ingredients introduction of plant origin, namely poppy seeds and sesame seeds in breadcrumbs zrazy has been proved. The optimal content of poppy seeds and sesame seeds has been determined in the recipe of the dish “Fish cut with poppy seeds and sesame seeds”, which is 1.2% of poppy seeds and 0.6% of sesame seeds in breadcrumbs. It has been found that the variant of the recipe № 3 dishes “Zrazy fish slices cut with poppy and sesame seeds” has the best organoleptic quality indicators: harmonious taste properties, and due to the introduction of breading poppy and sesame seeds acquire an attractive and original appearance. It has been proved that the introduction of Atlantic mackerel fish fillets, poppy seeds and sesame seeds into the recipe composition allows to significantly increase the content of fats (5 times chopped fish with poppy seeds and sesame seeds) in fats (5 times), unsaturated fatty acids (4.5 times) , PUFA (6.9 times). The content of such minerals as calcium, magnesium, iron, and vitamins B2, B3, B6, PP, K, D in the dish increased by more than 50%. The latest recipe “Fish cut with poppy and sesame seeds” ensures the absorption of calcium in full due to the presence in its chemical composition of the optimal ratio of Ca: P: Mg = 1: 1,48: 0,5. The energy value of the dish has increased almost 1.5 times. The degree of daily nutrient requirements for men of the III working age group aged 30 to 39 years of the dish “Fish cut with poppy and sesame seeds” in such as dietary fiber (13.05%), PUFA (36.6%), calcium (12.99%), magnesium (18.88%), phosphorus (19.23%), vitamin D (258.4%).

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