scholarly journals The beginning and the end of the aluminium value chain

2020 ◽  
Vol 108 (5-6) ◽  
pp. 506
Author(s):  
Leiv Kolbeinsen
Keyword(s):  
Value Chain ◽  
Bauxite Residue ◽  
Bayer Process ◽  
International Institute ◽  
Silicon Iron ◽  
Alumina Production ◽  
The World ◽  
Scrap Recycling ◽  
Negative Environmental Impact ◽  
Electric Cables

Metallic aluminium does not naturally occur in nature, and it was largely unknown, virtually a mystery, until 200 years ago. The modern aluminium production using a hydrometallurgical refining process for making alumina followed by electrolysis of this mineral was first developed in 1886 and, in principle, the same technology is still used to this day. About 90% of alumina refineries in the world use the Bayer process for refining Bauxite ore. It is very efficient, but it can only be used on high quality bauxite with low content of admixtures, especially silicon. The Bayer process also generates a Bauxite Residue (BR), maybe better known as Red Mud (RM) which is a thick red-brown, high-basicity paste consisting of silicon, iron, aluminium, titanium and others. The International Institute of Aluminium estimates that since 1886 almost a billion tonnes of aluminium were produced around the world with three fourths of this amount still being in use today, of which about 35% is located in buildings and structures, 30% in electric cables and equipment and 30% in transport. Aluminium scrap is collected all over the world. In the home, it mostly consists of aluminium beverage cans. It is claimed that 1 ton of recycled empty beverage cans save 8 tons of bauxite, 4 kg of various fluorides and 14 kWh of electricity. Additionally, recycling aluminium significantly reduces the negative environmental impact of ever-expanding RM landfills. As the idea of environmental responsibility is gaining more and more traction, separate household scrap recycling is becoming more and more popular around the world. How challenges related to such activity can be met will be the main topic of this paper alongside discussing new developments for alumina production without RM generation.

Book Reviews

2011 ◽  
Vol 49 (3) ◽  
pp. 746-747
Keyword(s):  
Value Chain ◽  
World Trade ◽  
Alternative Hypothesis ◽  
International Institute ◽  
Columbia University ◽  
Research School ◽  
The World ◽  
Trade Collapse

Veronica Rappoport of Columbia University reviews “On the Brink of Deglobalization: An Alternative Perspective on the Causes of the World Trade Collapse” by Peter A. G. van Bergeijk. The EconLit Abstract of the reviewed work begins “Explores the breakdown of international trade and capital flows in 2008-09 and presents challenges to the mainstream narrative for the world trade collapse. Discusses setting the stage; moving from peak to trough; the trade finance confusion--tales of capital, finance, credit, and trade; the international value chain myth; whether protectionism is just around the corner; an alternative hypothesis--the forgotten role of trade uncertainty; and testing the theories.0 Van Bergeijk is Professor of International Economics/Macroeconomics with the International Institute of Social Studies at Erasmus University and the CERES Research School for Resource Studies for Development at Utrecht University. Index.”

scholarly journals Seed Yam Production Using High-Quality Minitubers Derived from Plants Established with Vine Cuttings

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 978
Author(s):  
Beatrice Aighewi ◽  
Norbert Maroya ◽  
Lava Kumar ◽  
Morufat Balogun ◽  
Daniel Aihebhoria ◽  
...  
Keyword(s):  
Block Design ◽  
Research Station ◽  
International Institute ◽  
Tropical Agriculture ◽  
Single Node ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
The World ◽  
Cropping Seasons ◽  
Set Up

Yam (Dioscorea spp.) is a valuable food security crop in West Africa, where 92% of the world production occurs. The availability of quality seed tubers for increased productivity is a major challenge. In this study, minitubers weighing 1, 3, and 5 g produced from virus-free single-node vine cuttings of two improved yam varieties (Asiedu and Kpamyo) growing in an aeroponics system were assessed for suitability in seed production at a population of 100,000 plants ha−1. A 3 × 2 factorial experiment with randomized complete block design and three replications was set up during the cropping seasons of 2017 to 2019 at the International Institute of Tropical Agriculture Research Station in Kubwa, Abuja, Nigeria. Results showed field establishments of 87%–97.8%. Yields differed with minituber size, variety, and cropping season; the highest was 31.2 t ha−1 in 2019 and the lowest, 10 t ha−1 in 2018 from 5 and 1 g Kpamyo minitubers, respectively. The estimated number of tubers produced per hectare by 1, 3, and 5 g minitubers was 101,296, 112,592, and 130,555, with mean weights per stand of 159.2, 187.3, and 249.4 g, respectively. We recommend using less than 6 g minitubers for seed yam production due to their high multiplication rates.

scholarly journals Preliminary Characterization of Three Metallurgical Bauxite Residue Samples

2021 ◽  
Vol 5 (1) ◽  
pp. 66
Author(s):  
Panagiotis Angelopoulos ◽  
Maria Georgiou ◽  
Paschalis Oustadakis ◽  
Maria Taxiarchou ◽  
Hakan Karadağ ◽  
...  
Keyword(s):  
Low Cost ◽  
Bauxite Residue ◽  
Raw Material ◽  
Morphological Observation ◽  
Critical Metals ◽  
Alumina Production ◽  
Preliminary Characterization ◽  
Fine Grained ◽  
Extraction And Separation ◽  
Bulk Chemical

Bauxite Metallurgical Residue (BR) is a highly alkaline and very fine-grained by-product of the Bayer process for alumina production. Its huge global annual production has resulted in increasing accumulation of BR, causing deposition problems and serious environmental issues. RM contains oxides and salts of the main elements Fe, Al, Ca, Na, Si, Ti, and rare earths—REEs (Sc, Nd, Y, La, Ce, Ds)—many of which have been categorised by EU as critical metals (CMs). The valorisation of BR as a low-cost secondary raw material and metal resource could be a route for its reduction, introducing the waste into the economic cycle. REEScue constitutes a research project that aims to instigate the efficient exploitation of European bauxite residues, resulting from alumina production from Greece (MYTILINEOS SA), Turkey (ETI Aluminium), and Romania (ALUM SA), containing appreciable concentrations of scandium and REEs, through the development of a number of innovative extraction and separation technologies that can efficiently address the drawbacks of the existing solution. The consortium consists of three alumina producers from Greece (MYTILINEOS SA), Turkey (ETI Aluminium), and Romania (ALUM SA) and two academic partners from Greece (National Technical University of Athens) and Turkey (Necmettin Erbacan University). We present preliminary characterization results of three different BR samples that originate from the three aluminium industries, in respect of bulk chemical analysis (XRF, ICP), mineralogical investigation (XRD), and morphological observation through microscopy.

scholarly journals Managed infrastructure and services to empower meteorological services in developing countries

2021 ◽  
Author(s):  
Tom Smith
Keyword(s):  
Developing Countries ◽  
Life Cycle ◽  
Value Chain ◽  
Life Cycle Management ◽  
Observation Data ◽  
Negative Consequences ◽  
Observation Systems ◽  
Spatial Coverage ◽  
The World ◽  
The Impact

<p>Often in developing countries the spatial coverage with surface weather observations is sparse and the reliability of existing systems is lower than in other parts of the world. These gaps in the availability of observation data have significant negative consequences, locally and globally. For decades international funds have been used to acquire meteorological infrastructure with little to no focus on life-cycle management. Furthermore, improvements in one part of the value chain are often not connected with further downstream services meaning local benefits are generated with substantial delay, if at all.</p><p>DTN is one of the few organizations offering comprehensive solutions across the value chain from deployment and operation of observation systems through to weather analytics creating valuable insights for business, consumers and governments across the globe. DTN not only project manages the setup of weather observation systems but also maintains and operates measurement networks on different continents. The sensor agnostic approach enables us to offer the right sensor solution for each situation.</p><p>We see an opportunity to correct the mistakes of the past, changing the focus from acquiring observation systems to life cycle management to ensure the systems are maintained and leveraged effectively to provide forecasts and warnings for protection of life and property and enabling NMSs to focus on fulfilling their mission.</p><p>Funding organizations such as the World Bank must change the focus from hardware procurement to a performance-based PPE/P model that ensures the value of investments in infrastructure are realized. This sustainable approach will; ensure long lasting partnerships, harness the innovation in the private sector, create local jobs maintaining infrastructure and enable economic development through improved ability to manage the impact of weather and climate events.</p>

scholarly journals National Blockchain Laws as a Threat to Capital Markets Integration

2021 ◽  
Author(s):  
Matthias Lehmann
Keyword(s):  
International Institute ◽  
Private Law ◽  
Private International Law ◽  
The European Union ◽  
Legal Rules ◽  
Trade Law ◽  
International Trade Law ◽  
Commercial Code ◽  
The World ◽  
The Usa

Abstract Various states have started providing private law frameworks for blockchain transfers and crypto assets. France and Liechtenstein have adopted the first acts, while a commission of the British government sees no difficulties in extending property protection under the common law to crypto assets. In the USA, an amendment to the Uniform Commercial Code has been suggested, which has not stopped some states going their own, different way. The aim in all cases is to promote the use of modern distributed ledger technology and enhance investor protection. While these initiatives will increase legal certainty, they differ significantly. This has an important downside: there is a strong risk that the blockchain will be made subject to diverging legal rules. Similar to the world of intermediated securities, various national laws will need to be consulted to determine the rights and privileges of investors. This may increase transaction costs, thwart interoperability, and produce thorny conflict-of-laws problems. Markets risk being fragmented into national segments, with an inevitable diminution of their depth and liquidity. As a remedy, this article suggests developing uniform rules for the blockchain. Before national legislators and judges once again divide the world through idiosyncratic rules, the private law of crypto assets should be harmonized to the highest degree possible. Uniform rules should ideally be forged at the global level, by fora like the International Institute for the Unification of Private Law (UNIDROIT), the United Nations Commission on International Trade Law (UNCITRAL), and the Hague Conference on Private International Law. In the absence of worldwide rules, uniformization of private law should take place at the regional level—for instance, by the European Union. The article makes specific suggestions as to how this can be achieved and what the content of those rules should be.

Propagation of the Effects of China’s Changing Economic Development Model to the Rest of the World

Economica ◽  
2021 ◽  
Author(s):  
Marina Soloviova ◽  
Keyword(s):  
Value Chain ◽  
Relative Reduction ◽  
Global Value Chain ◽  
Upward Movement ◽  
Financial Flows ◽  
Goods And Services ◽  
The World ◽  
Current Account Imbalances ◽  
Economic Development Model ◽  
China’S Economy

This paper tackles the potential effects of the fundamental changes that China’s economy is undergoing on the rest of the world. Thus, a range of effects in the development of China’s imports of goods and services can have on other countries were identified, in terms of China’s switching from investment to consumption and from manufacturing to services and innovations, as well as in exports, in the light of China’s upward movement within the global value chain. The spread of effects via the financial channel is examined for direct investment and external loans, with an emphasis on changes in both the size of financial flows and the motivation of Chinese investors. The emerging trend of relative reduction in China’s foreign exchange reserves, as well as the potential effects of the yuan’s internationalization going forward in terms of diminishing global current account imbalances were evaluated.

Value addition, Price spread and Profit margins along the Groundnut value chain- A study in Anantpur district of Andhra Pradesh

2020 ◽  
Author(s):  
I. Shakuntala Devi
Keyword(s):  
Value Chain ◽  
Tamil Nadu ◽  
Andhra Pradesh ◽  
Edible Oil ◽  
Oilseed Crop ◽  
Value Addition ◽  
Profit Margins ◽  
Wide Range ◽  
The World ◽  
Price Spread

Groundnut, the most important edible oilseed crop in India and is the low priced commodity with valuable source of all the nutrients. It is the sixth most important oilseed crop in the world. It contains 48-50% of oil and 26-28% of protein, and is a rich source of dietary fiber, minerals, and vitamins. More than seventy percent of the area and production is found in Gujarat, Andhra Pradesh, Tamil Nadu and Karnataka. Anantapur district is the largest groundnut producing district The present study was carried out with the objective of exploring movement of produce along the value chain, the Value addition, Price spread and Profit margins incurred and found that there is a wide range of price gap observed from producer of oilseed to the final consumer of edible oil due to the number of stakeholders involved in the value chain.

Normality, Naturalness, Necessity, and Nutritiousness of the New Meat Alternatives

2021 ◽  
pp. 1092-1109
Author(s):  
Diana Bogueva ◽  
Kurt Schmidinger
Keyword(s):  
Scientific Evidence ◽  
Sustainable Consumption ◽  
Meat Consumption ◽  
World Population ◽  
The West ◽  
Gen Y ◽  
Sustainable Diet ◽  
The Social ◽  
The World ◽  
Negative Environmental Impact

In the West, meat is acceptable, tasty, delicious, palatable, and enjoyable. It has a well-established position in the consumers' food habits shaping the taste of the affluent eating culture and accepted as normal, natural, necessary, and nutritious. Although recent scientific evidence recognizes that meat has a high negative environmental impact, there is still lack of attention on the fact that we live on a planet with limited resources which need to be preserved. Part of this is a transition to more sustainable consumption habits and diets. This chapter examines the social readiness and acceptability of new meat alternatives as normal, natural, necessary, and nutritious amongst Gen Y and Gen Z consumers. It concludes that a reduction in meat consumption should be an essential part of creating a more sustainable diet in light of the projected increase of the world population, expected human health benefits, and improved environmental wellbeing of the planet.

Part 2 National and Regional Reports, Part 2.5 Latin America: Coordinated by Lauro Gama and José Antonio Moreno Rodríguez, 63 Paraguay: Paraguayan Perspectives on the Hague Principles

2021 ◽  
Author(s):  
Rodríguez José Antonio Moreno
Keyword(s):  
Latin America ◽  
Member State ◽  
International Law ◽  
International Institute ◽  
Private International Law ◽  
State Law ◽  
Conflict Of Laws ◽  
Commercial Code ◽  
The World ◽  
The Hague

This chapter highlights Paraguayan perspectives on the Hague Principles. Paraguay does not have a law dealing comprehensively and organically with Private International Law. The Civil and Commercial Code of 1987 contains the basic regulation on conflict of laws, and other provisions on the field can be found scattered in several special laws dealing with specific matters. Paraguay adhered, as a Member State, to the Hague Conference on Private International Law via Law 2555 of 2005. It is the first country in the world to legislate on international contracts heavily influenced by the Hague Principles. The Paraguayan law on international contracts drawn upon the Hague Principles openly allows the application of non-State law, and the International Institute for the Unification of Private Law (UNIDROIT) Principles clearly qualify as such.

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