scholarly journals Rare Earths’ Recovery from Phosphogypsum: An Overview on Direct and Indirect Leaching Techniques

Minerals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1051
Author(s):  
Jean-Luc Mukaba ◽  
Chuks Paul Eze ◽  
Omoniyi Pereao ◽  
Leslie Felicia Petrik
Keyword(s):  
Rare Earths ◽  
Global Economy ◽  
Raw Materials ◽  
Recovery Process ◽  
Extraction Methods ◽  
Industrial Wastes ◽  
High Tech ◽  
Advantages And Disadvantages ◽  
Viable Approach ◽  
Technology And Economy

The need for rare earths elements (REEs) in high tech electrical and electronic based materials are vital. In the global economy, deposits of natural REEs are limited except for countries such as China, which has prompted current attempts to seek alternative resources of REEs. This increased the dependence on major secondary rare earth-bearing sources such as scrap alloy, battery waste, spent catalysts, fly ash, spent magnets, waste light-emitting diodes (LEDs), and phosphogypsum (PG) for a substantial recovery of REEs for use. Recycling of REEs from these alternative waste sources through hydrometallurgical processes is becoming a sustainable and viable approach due to the low energy consumption, low waste generation, few emissions, environmentally friendliness, and economically feasibility. Industrial wastes such as the PG generated from the production of phosphoric acid is a potential secondary resource of REEs that contains a total REE concentration of over 2000 mg/kg depending upon the phosphate ore from which it is generated. Due to trace concentration of REEs in the PG (normally < 0.1% wt.) and their tiny and complex occurrence as mineral phases the recovery process of REE from PG would be highly challenging in both technology and economy. Various physicochemical pre-treatments approaches have been used up to date to up-concentrate REEs from PG prior to their extraction. Methods such as carbonation, roasting, microwave heating, grinding or recrystallization have been widely used for this purpose. This present paper reviews recent literature on various techniques that are currently employed to up-concentrate REs from PG to provide preliminary insight into further critical raw materials recovery. In addition, the advantages and disadvantages of the different strategies are discussed as avenues for realization of REE recovery from PG at a larger scale. In all the different approaches, recrystallization of PG appears to show promising advantages due to both high REE recovery as well as the pure PG phase that can be obtained.

scholarly journals Environment Potential and Adjusting of Gross Domestic Product to the Safe Industrial Development

2018 ◽  
Vol 41 ◽  
pp. 04001
Author(s):  
Michal Cehlár ◽  
Zou Liang ◽  
Lian Wan ◽  
Khanindra Madauri ◽  
Sergey Krysin
Keyword(s):  
Economic Growth ◽  
Global Economy ◽  
Industrial Development ◽  
Raw Materials ◽  
High Tech ◽  
Negative Consequences ◽  
Resource Base ◽  
Environmental Goods ◽  
Goods And Services ◽  
Social And Economic Development

The importance of the natural resource and environmental factors in the development of the modern economy is becoming more important in the context of energy security and the quality of economic growth. This is also due to the fact that the state’s policy in increasing GDP has been adjusted to a qualitative social-and-economic development. In this regard, the quantitative measurement of the quantity and quality ratio of economic growth is relevant. The rise of the global economy as a whole and its individual territories is due to both a high-tech breakthrough and the development of raw materials industries – oil, gas, coal and metallurgy. Currently, to meet the needs of society in natural resources, environmental goods and services, ever-increasing costs are required for expanded reproduction of the mineral resource base and compensation for negative consequences resulting from the degradation of ecological systems and pollution of the natural environment.

Theoretical, methodological and practical development in strategic management of agro-economic growth in regions of the Russian Federation within the context of global and national trends in the formation of integrated economic relations

2021 ◽  
Vol 7 (Extra-A) ◽  
pp. 155-160
Author(s):  
Zhansurat Sultanovna Zhangorazova ◽  
Eldar Safarovich Bakkuev ◽  
Elvira Ruslanovna Kokova ◽  
Rukiyat Omarovna Ugurchieva ◽  
Tatyana Evgenievna Khorolskaya
Keyword(s):  
Economic Growth ◽  
Russian Federation ◽  
Global Economy ◽  
Large Scale ◽  
Raw Materials ◽  
Import Substitution ◽  
High Tech ◽  
Industrial Complex ◽  
Resource Saving ◽  
The Russian Federation

Modern conditions for the global economy development clearly indicate that the formation of competitive agrarian economy advantages in the Russian Federation is possible only with the use of an innovative development scenario and the large-scale use of the scientific and technological potential of high-tech industries. Of course, the complex of the most important criteria for the economic growth of the national economy determines the volume of the high-tech sector and the scientific and technical potential of the country at the present stage. The situation in the Russian market clearly implies the need for a quick solution to the main problems of developing high-tech sectors in the agro-industrial complex, accelerating import substitution and ensuring sustainable food security based on resource-saving technologies of agro-industrial production and deep processing of agricultural raw materials.

scholarly journals Selected Aspects Related to Medicinal and Aromatic Plants as Alternative Sources of Bioactive Compounds

2021 ◽  
Vol 22 (4) ◽  
pp. 1521
Author(s):  
Radu Claudiu Fierascu ◽  
Irina Fierascu ◽  
Anda Maria Baroi ◽  
Alina Ortan
Keyword(s):  
Raw Materials ◽  
Scale Up ◽  
Extraction Methods ◽  
Industrial Applications ◽  
Critical Discussion ◽  
Aromatic Plants ◽  
Medicinal And Aromatic Plants ◽  
Synthetic Drugs ◽  
Advantages And Disadvantages ◽  
Food And Feed

Natural compounds obtained from different medicinal and aromatic plants have gained respect as alternative treatments to synthetic drugs, as well as raw materials for different applications (cosmetic, food and feed industries, environment protection, and many others). Based on a literature survey on dedicated databases, the aim of the present work is to be a critical discussion of aspects regarding classical extraction versus modern extraction techniques; possibilities to scale up (advantages and disadvantages of different extraction methods usually applied and the influence of extraction parameters); and different medicinal and aromatic plants’ different applications (medical and industrial applications, as well as the potential use in nanotechnology). As nowadays, research studies are directed toward the development of modern, innovative applications of the medicinal and aromatic plants, aspects regarding future perspectives are also discussed.

scholarly journals ORGANISATION OF THE TRANSPORTATION PROCESS OF OVERSIZED CARGO BY MODES OF TRANSPORT. ROLE AND POSITION OF MARITIME TRANSPORT IN THIS PROCESS

2020 ◽  
Vol 1 (154) ◽  
pp. 231-239
Author(s):  
О. Melnyk
Keyword(s):  
Water Transport ◽  
Raw Materials ◽  
Mining Industry ◽  
Steel Structures ◽  
High Tech ◽  
Trade Relations ◽  
Advantages And Disadvantages ◽  
Transportation Process ◽  
Mode Of Transport ◽  
Time Required

The article deals with comparison of modes of transportation concerning oversized and heavylift cargo carriage. The peculiarities of each mode of transport directed to determine the rational spheres of its use, but at the same time the development of the geography of maritime trade and intercontinental mainline freight flows has had a significant impact on the increase in the volume of transportation of industrial cargoes, raw materials and high-tech equipment and served as an impetus for the realization of the competitive advantages of the water transport over the other modes of transportation. Assistance in the development of external economic relations and provision of international trade relations as priority components in the list of advantages of which marine transport has in the world economy. Therefore, it becomes obvious that one of the most difficult types of transportation is the carriage of oversized and heavylift cargoes. It is reasonable to note that this concept has differences depending on the type of transport used. There are also various rules of transportation by rail, sea, air and road. Advantages and disadvantages of the implementation of the transportation process of oversized cargo using a particular mode of transport are not very apparent and depend primarily on factors such as indication of dimensions, information on weight, type of cargo, route requirements and time required for transportation, volume of transportation, specific conditions and requirements for carriage. Oversized cargoes in their turn include the cargo units of construction vehicles (excavators, bulldozers, graders, trucks), drilling rigs, earthmoving machines, various machinery and mechanisms for mining industry, steel structures and bridge supports, wind generators, transformers, as well as extra-length equipment, parts and components of plants. Keywords: Oversized and heavylift cargo transportation, water transport, mode of transportation

Study of the current state of foreign trade of the Russian Federation under the influence of the covid-19 pandemic

2021 ◽  
pp. 35-44
Author(s):  
А.С. ПЕТРОВА ◽  
Е.Е. НОЕВА ◽  
В.М. ЗАРОВНЯЕВА
Keyword(s):  
Foreign Trade ◽  
Russian Federation ◽  
Global Economy ◽  
Raw Materials ◽  
Import Substitution ◽  
High Tech ◽  
Industry Trade ◽  
Current State ◽  
The Russian Federation ◽  
The Impact

Пандемия COVID-19 и ограничения, направленные на ее сдерживание, привели к снижению экономической активности, сокращению мировой торговли, оказали масштабное воздействие на мировую экономику, усилив существующие проблемы. Следствием замедления темпов экономического роста в глобальных масштабах, затронувшим большинство секторов экономики, стало падение спроса на энергоресурсы. Такая тенденция должна была неизбежно отразиться на показателях российской внешней торговли, в структуре которой значительную долю экспорта формирует именно топливно-энергетическое сырье. В данной работе представлен анализ современного состояния и особенностей реализации внешнеторговой деятельности РФ в условиях антиковидных ограничений. Исследована как товарная, так и географическая структура экспорта и импорта Российской Федерации до пандемии и в 2020 г. Дана оценка влиянию пандемии на торговлю услугами. Рассчитаны индексы внутриотраслевой торговли РФ. Полученные данные позволили оценить степень воздействия текущего экономического кризиса на изменение динамики показателей внешней торговли России. Анализ выявил явный дисбаланс в структуре, как экспорта, так и импорта, и серьезную зависимость от конъюнктуры энергетических рынков, сжатие которых привело к существенному сокращению экспортных поступлений. Основываясь на результатах проделанной работы, можно прийти к выводу, что ранее принятые меры, ориентированные на импортозамещение и развитие в РФ высокотехнологичных отраслей, пока явных положительных результатов не дают, по крайней мере, структура внешней торговли их не отражает. Если анализировать показатели внутриотраслевой торговли, то они свидетельствуют о слабой диверсификации экспорта, а также о неконкурентоспособности целых секторов российской экономики. В условиях новых вызовов и увеличения степени неопределенности следует взглянуть на роль РФ в международном разделении труда под новым углом. The COVID-19 pandemic and the restrictions aimed at containing it have led to a decrease in economic activity, a reduction in world trade, and had a massive impact on the global economy, exacerbating existing problems. The slowdown in economic growth on a global scale, which affected most sectors of the economy, resulted in a drop in demand for energy resources. This trend should inevitably affect the indicators of Russian foreign trade, in the structure of which a significant share of exports is formed by fuel and energy raw materials. This paper presents an analysis of the current state and features of the development of foreign trade activities of the Russian Federation in the context of antiquated restrictions. We investigated both the commodity and the geographical structure of exports and imports of the Russian Federation before the pandemic and in 2020. The impact of the pandemic on trade in services is assessed. The indices of intra-industry trade of the Russian Federation were calculated. The data obtained made it possible to assess the degree of impact of the current economic crisis on the change in the dynamics of indicators of Russia’s foreign trade. The analysis revealed a clear imbalance in the structure of both exports and imports, and a serious dependence on the conjuncture of energy markets, the contraction of which led to a significant reduction in export earnings. Based on the results of the work done, we can conclude that the previously adopted measures aimed at import substitution and the development of high-tech industries in the Russian Federation have not yet yielded clear positive results, at least the structure of foreign trade does not reflect them. If we analyze the indicators of intra-industry trade, they indicate a weak diversification of exports, as well as the lack of competitiveness of entire sectors of the Russian economy. In the face of new challenges and an increasing degree of uncertainty, one should look at the role of the Russian Federation in the international division of labor from a new angle.

High-tech methods for processing meat raw materials

2020 ◽  
pp. 20-24
Author(s):  
M.G. Baryshev ◽  
A.A. Zaporizhzhya ◽  
G.I. Kasyanov
Keyword(s):  
Raw Materials ◽  
High Tech

Anthocyanins: Chemical Properties and Health Benefits: A Review

2021 ◽  
Vol 17 ◽  
Author(s):  
Siraj Salman Mohammad ◽  
Renata Oliveira Santos ◽  
Maria Ivone Barbosa ◽  
José Lucena Barbosa Junior
Keyword(s):  
Raw Materials ◽  
Health Benefits ◽  
Chemical Properties ◽  
Extraction Methods ◽  
The Body ◽  
Raw Material ◽  
Extraction Properties ◽  
Therapeutic Properties ◽  
Food Processes ◽  
Shed Light

: Anthocyanins are widely spread in different kinds of food, especially fruits and floral tissues, there is an extensive range of anthocyanin compounds reach more than 600 exist in nature. Anthocyanins can be used as antioxidants and raw material for several applications in food and pharmaceutical industry. Consequently, a plenty of studies about anthocyanins sources and extraction methods were reported. Furthermore, many studies about their stability, bioactive and therapeutic properties have been done. According to the body of work, we firstly worked to shed light on anthocyanin properties including chemical, antioxidant and extraction properties. Secondly, we reported the applications and health benefits of anthocyanin including the applications in food processes and anthocyanin characteristics as therapeutic and prophylactic compounds. We reviewed anticancer, anti-diabetic, anti-fatness, oxidative Stress and lipid decreasing and vasoprotective effects of anthocyanins. In conclusion, because the importance of phytochemicals and bioactive compounds the research is still continuing to find new anthocyanins from natural sources and invest them as raw materials in the pharmaceutical and nutrition applications.

A glance on rare earth oxides: importance, reserves, demand, applications, critical uncertainties, global economy, and zeta potential characterization

2020 ◽  
Vol 05 ◽  
Author(s):  
Silas Santos ◽  
Orlando Rodrigues ◽  
Letícia Campos
Keyword(s):  
Rare Earth ◽  
Zeta Potential ◽  
Sample Preparation ◽  
Rare Earths ◽  
Smart Materials ◽  
Global Economy ◽  
Materials Science ◽  
Functional Materials ◽  
Rare Earth Oxides ◽  
Interparticle Forces

Background: Innovation mission in materials science requires new approaches to form functional materials, wherein the concept of its formation begins in nano/micro scale. Rare earth oxides with general form (RE2O3; RE from La to Lu, including Sc and Y) exhibit particular proprieties, being used in a vast field of applications with high technological content since agriculture to astronomy. Despite of their applicability, there is a lack of studies on surface chemistry of rare earth oxides. Zeta potential determination provides key parameters to form smart materials by controlling interparticle forces, as well as their evolution during processing. This paper reports a study on zeta potential with emphasis for rare earth oxide nanoparticles. A brief overview on rare earths, as well as zeta potential, including sample preparation, measurement parameters, and the most common mistakes during this evaluation are reported. Methods: A brief overview on rare earths, including zeta potential, and interparticle forces are presented. A practical study on zeta potential of rare earth oxides - RE2O3 (RE as Y, Dy, Tm, Eu, and Ce) in aqueous media is reported. Moreover, sample preparation, measurement parameters, and common mistakes during this evaluation are discussed. Results: Potential zeta values depend on particle characteristics such as size, shape, density, and surface area. Besides, preparation of samples which involves electrolyte concentration and time for homogenization of suspensions are extremely valuable to get suitable results. Conclusion: Zeta potential evaluation provides key parameters to produce smart materials seeing that interparticle forces can be controlled. Even though zeta potential characterization is mature, investigations on rare earth oxides are very scarce. Therefore, this innovative paper is a valuable contribution on this field.

China and the Geopolitics of Rare Earths

2017 ◽  
Author(s):  
Sophia Kalantzakos
Keyword(s):  
Rare Earth ◽  
Rare Earths ◽  
Resource Competition ◽  
Renewable Energy Sources ◽  
High Tech ◽  
Trade Dispute ◽  
Policy Responses ◽  
Economic Statecraft ◽  
The Rare Earth

In 2010, because of a geopolitical incident between China and Japan, seventeen elements of the periodic table known as rare earths became notorious overnight. An “unofficial” and temporary embargo of rare-earth shipments to Japan alerted the world to China’s near monopoly position on the production and export of these indispensable elements for high-tech, defense, and renewable energy sources. A few months before the geopolitical confrontation, China had chosen to substantially cut export quotas of rare earths. Both events sent shockwaves across the markets, and rare-earth prices skyrocketed, prompting reactions from industrial nations and industry itself. The rare-earth crisis is not a simple trade dispute, however. It also raises questions about China’s use of economic statecraft and the impacts of growing resource competition. A detailed and nuanced examination of the rare-earth crisis provides a significant and distinctive case study of resource competition and its spill-over geopolitical effects. It sheds light on the formulation, deployment, longevity, effectiveness, and, perhaps, shortsightedness of policy responses by other industrial nations, while also providing an example of how China might choose to employ instruments of economic statecraft in its rise to superpower status.

Australia—The Hidden Jewel

2018 ◽  
Author(s):  
Mahesh K. Joshi ◽  
J.R. Klein
Keyword(s):  
Natural Resources ◽  
Value Chain ◽  
Global Economy ◽  
Good Governance ◽  
Developing Economies ◽  
Raw Materials ◽  
Manufacturing Sector ◽  
Developed Countries ◽  
The United States ◽  
Dutch Disease

The twenty-first century is being touted as the Asian century. With its stable economy, good governance, education system, and above all the abundant natural resources, will Australia to take its place in the global economy by becoming more entrepreneurial and accelerating its rate of growth, or will it get infected with the so-called Dutch disease? It has been successful in managing trade ties with fast-developing economies like China and India as well as developed countries like the United States. It has participated in the growth of China by providing iron ore and coal. Because it is a low-risk country, it has enabled inflow of large foreign capital investments. A lot will depend on its capability and willingness to invest the capital available in entrepreneurial ventures, its ability to capture the full value chain of natural resources, and to export the finished products instead of raw materials, while building a robust manufacturing sector.

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