Recovery of rare earth metals as critical raw materials from phosphorus slag of long-term storage

2017 ◽  
Vol 173 ◽  
pp. 271-282 ◽  
Author(s):  
Zinesh Sadyrovna Abisheva ◽  
Zaure Baytasovna Karshigina ◽  
Yelena Gennadyevna Bochevskaya ◽  
Ata Akcil ◽  
Elmira Abdikhalikovna Sargelova ◽  
...  
Keyword(s):  
Rare Earth ◽  
Raw Materials ◽  
Rare Earth Metals ◽  
Long Term Storage ◽  
Term Storage ◽  
Critical Raw Materials

Screening of Agricultural Raw Materials and Long-Term Storage Products to Identify Bacillary Contaminants

2019 ◽  
pp. 641-653
Author(s):  
Olena Danylova ◽  
Marina Serdyuk ◽  
Liudmyla Pylypenko ◽  
Victor Pelykh ◽  
Inna Lopotan ◽  
...  
Keyword(s):  
Raw Materials ◽  
Long Term Storage ◽  
Storage Products ◽  
Term Storage

scholarly journals Dry functional blend with fruit-berry powders for yeast dough

2019 ◽  
Vol 81 (2) ◽  
pp. 177-183
Author(s):  
A. V. Moshkin ◽  
A. T. Vasyukova ◽  
A. E. Alexeyev
Keyword(s):  
Raw Materials ◽  
Long Term Storage ◽  
Chemical Indicators ◽  
Toxicological Studies ◽  
The Russian Federation ◽  
Milk Mixture ◽  
Physical And Chemical ◽  
Term Storage ◽  
High Calorie

The basic information about functional mixtures is outlined, options for compositions and recommendations for use in baking in mass production are proposed. The characteristic of microbiological, physical and chemical indicators is given, and the results of toxicological studies of dry functional mixtures with fruit and berry powders are given. High-calorie, medium-calorie, and low-calorie composite mixtures have been developed for the centralized production of yeast dough. Dry functional mixtures can be produced according to regulatory documents: TU 9161-004-51926638-11 and TI to TU 9161-004-51926638-11. A patent of the Russian Federation No. 2602629 was obtained for dry functional mixtures with fruit and berry powders. The technological scheme for obtaining a dry functional mixture consists of the following operations: sifting, dosing of prescription components in predetermined proportions: dry egg-milk mixture in the amount of 56.2-61.6% sugar – 20.0-24.3% and salt – 14.1-17.2%. Xanthan (1.06-2.43%) or guar (4.25-5.30%) and fruit and berry powders (1.0-1.5%) are introduced as additional raw materials. Then mixing is carried out, preparation for implementation. The resulting mixture is portioned and packaged in paper bags. Fruit and berry powders were prepared from rose hips, aronia, nettle, bananas, apples and carrots. According to microbiological studies, the degree of contamination during storage during the year corresponds to SanPiN 2.3.2.1078-01, which makes it possible to produce dry functional mixtures with fruit and berry powders for long-term storage. They can be stored in a dry, well-ventilated room in compliance with sanitary rules, with a relative humidity of 65-70% and a temperature of 18-20 °C from 0 to 12 months. It was found that during storage for 12 months. in hermetically sealed paper bags, no powder quality changes were observed. Bakery products made using these mixtures can be recommended for medical, preventive and gerontological nutrition.

scholarly journals CO2 Utilization and Long-Term Storage in Useful Mineral Products by Carbonation of Alkaline Feedstocks

2021 ◽  
Vol 9 ◽  
Author(s):  
Renato Baciocchi ◽  
Giulia Costa
Keyword(s):  
Raw Materials ◽  
Mineral Carbonation ◽  
Carbon Utilization ◽  
Waste Streams ◽  
Long Term Storage ◽  
Current State ◽  
Critical Issues ◽  
Term Storage ◽  
Change Mitigation

Accelerated carbonation is a carbon utilization option which allows the manufacturing of useful products, employing CO2-concentrated or -diluted emission sources and waste streams such as industrial or other processing solid residues, in a circular economy perspective. If properly implemented, it may reduce the exploitation of virgin raw materials and their associated environmental footprint and permanently store CO2 in the form of Ca and/or Mg carbonates, thus effectively contributing to climate change mitigation. In this perspective article, we first report an overview of the main mineral carbonation pathways that have been developed up to now, focusing on those which were specifically designed to obtain useful products, starting from different alkaline feedstocks. Based on the current state of the art, we then discuss the main critical issues that still need to be addressed in order to improve the overall feasibility of mineral carbonation as a CCUS option, as well as research needs and opportunities.

scholarly journals Drying Precess-A Factor That Ensures Long-Term Storage Of Agricultural Raw Materials

2020 ◽  
Vol 02 (09) ◽  
pp. 57-63
Author(s):  
Akabirov Laziz Isamidinov ◽  
◽  
Gafurov Karim Hakimovich ◽  
Majidov Kakhramon Halimovich ◽  
◽  
...  
Keyword(s):  
Raw Materials ◽  
Long Term Storage ◽  
Term Storage

scholarly journals Modern aspects of disturbed land reclamation

2020 ◽  
Vol 192 ◽  
pp. 03019
Author(s):  
Natalia Antoninova ◽  
Lyubov Shubina ◽  
Artem Sobenin ◽  
Albert Usmanov
Keyword(s):  
Land Reclamation ◽  
Raw Materials ◽  
Long Term Storage ◽  
Disturbed Land ◽  
Environmental Rehabilitation ◽  
Hygienic Function ◽  
Scope Of Application ◽  
Overburden Dumps ◽  
Term Storage

The urgency of solving environmental problems of disturbed territories is obvious in connection with the accumulation of a huge amount of waste from mining and metallurgical industries, deposited in slime and tailings dumps, overburden dumps, slags and substandard raw materials. Environmental rehabilitation of such territories is determined by both the possible long-term existence of such objects and the prospect of their reuse. In this regard, the use of new geosynthetic materials, the most promising and effective method of restoring ecological characteristics of the areas of violations of land, based on the implementation of the principle of least possible scope of application of topsoil and vegetation established, carrying out sanitary-hygienic function, contributes to the improvement of the environment in the areas of enterprise functioning. The article presents the results of applied research on the reclamation of the horizon the shortage of topsoil, or when you use the fertile layer, exposed to long-term storage in dumps. And the planting of grass vegetation on the recultivated surface that corresponds to the regional nature of environmental optimization measures, taking into account zonal features, will ensure the creation of sod that stops the processes of deflation and water erosion.

scholarly journals The Recovery of Yttrium and Europium Compounds from Waste Materials

2013 ◽  
Vol 39 (3) ◽  
pp. 107-114 ◽  
Author(s):  
Stefan Góralczyk ◽  
Elżbieta Uzunow
Keyword(s):  
Rare Earth ◽  
Raw Materials ◽  
Electronic Waste ◽  
Rare Earth Metals ◽  
High Technology ◽  
Hazardous Substances ◽  
Waste Materials ◽  
Test Results ◽  
Secondary Materials ◽  
Critical Raw Materials

Abstract Rare earth metals including yttrium and europium are one of several critical raw materials, the use of which ensures the development of the so-called high technology. The possibility of their recovery in Europe is limited practically only to secondary materials such as phosphogypsum and electronic waste. The article presents the results of our research concerning the development of recovery technology of yttrium and europium from luminophore CRT used lamps. It describes the principle of separation of elements and the test results of cleaning the concentrate. It was shown that the costs of preparing the concentrate according to the proposed technology are lower than the phosphogypsum processing technology and the composition of the resulting product does not contain hazardous substances.

Semi-synthetic dry medium with serum for long-term storage of Neisseria

1985 ◽  
Vol 66 (3) ◽  
pp. 227-228
Author(s):  
L. A. Zarifullina
Keyword(s):  
Raw Materials ◽  
Laboratory Conditions ◽  
Long Term Storage ◽  
Term Storage ◽  
Made In

For storage of nonisseries, whey media on meat and casein are usually used, which are not produced by the industry, but are made in laboratory conditions from food (raw materials and therefore not enough are standard.

scholarly journals Ocorrência e Variabilidade de Composição dos Fosfatos do Grupo da Monazita em Carbonatitos

2003 ◽  
Vol 30 (1) ◽  
pp. 83 ◽  
Author(s):  
MARIA CRISTINA MOTTA DE TOLEDO ◽  
VITOR PAULO PEREIRA
Keyword(s):  
Rare Earth ◽  
Physical Stability ◽  
Morphological Characteristics ◽  
Ore Deposits ◽  
Structural Group ◽  
Long Term Storage ◽  
Monazite Ore ◽  
Synthetic Phase ◽  
Term Storage

Monazite structural group includes arsenates, phosphates, and silicates, with general formulae A B O4 , (A = Bi, Ca, Rare Earth Elements, Th, U and B = As5+, P5+, Si4+). Among them, the phosphate monazite is the most abundant independent Rare Earth Element mineral, occurring in several geological sites. It presents a variable composition and morphology and has strong chemical and physical stability. This paper presents a review about this mineral, particularly for monazite associated with carbonatite complexes. Detailed study of the composition of monazite will improve geochemical and petrological interpretations. In the economic field, monazite is, with bastnaesite, an ore mineral present in the main deposits in the world; its morphological and composition characteristics have influence in ore quality and in efficiency of concentration processes. Since the seventhies, its importance reachs the environmental field and his highly stable structure has been investigated as model for a synthetic phase to long-term storage of radionuclides from nuclear waste. The most important monazite ore deposits in Brazil are alluvional. Monazite occurs also in other materials, mainly in carbonatites and their weathering products, which may constitute important source of REE. In these rocks, because its high stability and possibility of weathering genesis, monazite is the most important among the phosphate minerals. However, researches about monazite associated with Brazilian carbonatitic materials have shown mainly unfavourable morphological characteristics for economic profit.

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