Crystals of the rare earth metal polytelluride LaTe1.82(1), namely, lanthanum telluride (1/1.8), have been grown by molten alkali halide flux reactions and vapour-assisted crystallization with iodine. The two-dimensionally incommensurately modulated crystal structure has been investigated by X-ray diffraction experiments. In contrast to the tetra­gonal average structure with unit-cell dimensions of a = 4.4996 (5) and c = 9.179 (1) Å at 296 (1) K, which was solved and refined in the space group P4/nmm (No. 129), the satellite reflections are not compatible with a tetra­gonal symmetry but enforce a symmetry reduction. Possible space groups have been derived by group–subgroup relationships and by consideration of previous reports on similar rare earth metal polychalcogenide structures. Two structural models in the ortho­rhom­bic superspace group, i.e. Pmmn(α,β,1 over 2)000(−α,β,1 over 2)000 (No. 59.2.51.39) and Pm21n(α,β,1 over 2)000(−α,β,1 over 2)000 (No. 31.2.51.35), with modulation wave vectors q1 = αa* + βb* + 1 over 2c* and q2 = −αa* + βb* + 1 over 2c* [α = 0.272 (1) and β = 0.314 (1)], have been established and evaluated against each other. The modulation describes the distribution of defects in the planar [Te] layer, coupled to a displacive modulation due to the formation of different Te anions. The bonding situation in the planar [Te] layer and the different Te anion species have been investigated by density functional theory (DFT) methods and an electron localizability indicator (ELI-D)-based bonding analysis on three different approximants. The temperature-dependent electrical resistance revealed a semiconducting behaviour with an estimated band gap of 0.17 eV.

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A National Science Foundation-funded research has discovered the root cause of why lithium metal batteries fail -- bits of lithium metal deposits break off from the surface of the anode during discharging and are trapped as "dead" or inactive lithium that the battery can no longer access. The discovery challenges the conventional belief that lithium metal batteries fail because of the growth of a layer, called the solid electrolyte interphase (SEI), between the lithium anode and the electrolyte. The researchers made their discovery by developing a technique to measure the amounts of inactive lithium species on the anode -- a first in the field of battery research -- and studying their micro- and nanostructures. The findings could pave the way for bringing rechargeable lithium metal batteries from the lab to the market.

Image credit: University of California - San Diego

The Critical Investor discusses recent developments at the company that is exploring the Goliath Gold Project in Ontario.

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Maurice Jackson of Proven and Probable speaks with Andy Schectman, president of Miles Franklin Precious Metals Investments, about the present situation with physical precious metals.

A new study has investigated the possibility of a regional industrial symbiosis of metal industries across the Sweden-Finland border. The analysis suggests that it is technologically feasible, but that regulatory support may be inefficient, particularly with respect to changing the status of a waste product to a by-product.

A new study has investigated the possibility of a regional industrial symbiosis of metal industries across the Sweden-Finland border. The analysis suggests that it is technologically feasible, but that regulatory support may be inefficient, particularly with respect to changing the status of a waste product to a by-product.

Certain vegetables take up heavy metals from contaminated water used for irrigation, a new study finds. The researchers grew vegetables in greenhouses similar to field conditions in Greece and found that concentrations of nickel and chromium increased in potatoes and onions, but not in carrots, when irrigated with water containing contaminant levels similar to those found in industrial wastewater.

The most effective way to lower the greenhouse gas (GHG) emissions associated with metal production is to pursue a circular economy for the material in the long term, says a recent study. This century will see a high demand for seven major metals; the resultant overall environmental impact is expected to outweigh any environmental savings that may result from greener production processes or an increased use of renewable energy.

Precious metals, such as gold and silver, constitute a small but valuable part of waste electrical and electronic equipment (WEEE). New research suggests that significant amounts of these precious metals are lost in the initial stage of the waste recovery process and makes recommendations for improvements in the recycling chain.

Spanish medical and public health researchers have found no clear evidence for increased heavy metal levels in adults living near a recently-built urban solid waste incinerator over two years of operation. Concentrations of lead, chromium and mercury in blood and urine samples taken around the plant were not significantly higher than for populations who lived further away.

A new study has investigated the possibility of a regional industrial symbiosis of metal industries across the Sweden-Finland border. The analysis suggests that it is technologically feasible, but that regulatory support may be inefficient, particularly with respect to changing the status of a waste product to a by-product.

Vast resources are required to extract speciality and difficult-to-recycle metals that are often only used once before disposal. Researchers argue in a new analysis that more must be done to improve metal recycling rates in order to secure our material needs for the future.

Mining metals from landfill sites can be economically viable, a recent project in the US has demonstrated. Approximately 34 352 tonnes of metals, conservatively valued at US$7.42 million (€6.67 million) were recovered from the 8 hectare ashfill site, according to researchers who analysed the project.

The Alang-Sosiya shipbreaking yard in India is highly polluted with heavy metals, a study concludes. The researchers studied heavy metal contamination in sediments taken from the intertidal zone of the shipbreaking yard and compared them to a control site. The area was found to be ‘strongly polluted’ with copper, cobalt, manganese, lead and zinc.

Life cycle assessment (LCA) can measure the environmental impact of the different stages of a ship’s life cycle, from design to dismantling. This assessment focused on the impact of recycling the metal parts of a ship and did not consider the crucial impact of the hazardous materials present on board. The results showed that re-use of metals had environmental benefits, but overall these were small compared to the environmental impact of other life cycle stages, such as operation.

A successful circular economy for valuable metals needs more than just effective recycling technologies, as a new study shows. The research, which explored the governance of recovering vanadium from steel-industry waste, revealed that industry stakeholders feel the prospect of financial gain, or reduced costs, through recovery is too distant at present. This perception could hinder a circular economy for critical materials from industrial residue, the study warns.

Indium, a unique metal, is in short supply worldwide and is not recycled at the end of its life (EoL). Indium is used in a wide range of technologies, causing regions across the world that are reliant on its import — such as Europe — to be concerned about security of supply. Primary sources of indium are thought to be sufficient for medium-term needs, but with growing demand comes growing concern over long-term supply. A new study has conducted a material flow analysis and examined secondary sources of indium within European ‘urban mines’ and in-use stocks (IUS) of indium products, identifying these as potential sources of 500 tonnes of indium — if it were recycled at EoL.

The German Renewable Energy Sources Act was introduced in 2001 to encourage an increase in renewable energy supply. Since then, supply has increased from 7% (in 2001) to 37% (in 2017. Wind energy is an important part of Germany’s renewable energy production — but deploying sufficient turbines to achieve the climate goals requires a large amount of raw materials, many of which are metals in limited supply. This study found copper and dysprosium to be the most critical of these metals, as they could face future bottlenecks and are essential elements in present and future turbine design.

Energy demand is on the rise globally, and this is predicted to continue in coming decades. Increasing energy production to meet this demand requires materials — both metals and non-metal minerals — from a number of countries. As some materials are in short supply, it is important to consider material dependency and availability when developing national energy plans for the future. This study is the first to address material dependency effects on a nation’s energy development plans, with the UK and Turkey as case studies.

Rare earth elements (REEs) are used increasingly often in innovative technologies, causing these elements to enter the natural environment. They can be sourced via deep-sea mining, raising concerns about marine exposure to mining processes and waste products. This study examined how two REEs, lanthanum and yttrium, affected and stressed marine ecosystems, using young marine mussels (Mytilus galloprovincialis) as indicators of water quality. The researchers determine a parameter known as the ‘predicted no effect concentration’ (PNEC) for La and Y — the maximum environmental level of each of the two elements at which no effect is seen on the most sensitive organisms and which is, therefore, deemed safe for the environment.

A new study has indicated that metallic pollutants in river basins have more sources than other dangerous substances. Sources include stormwater, industrial effluents, treated effluents, agricultural drainage, sediments, mining drainage and landfills.

A new study assessing the levels, and potential health risk, of toxic heavy metals in market-bought fish and shellfish in Spain has found that they are generally below European Commission regulatory limits, and that these products are therefore safe to eat for the average consumer in Spain. However, for high level consumers of specific fish species, toxic element levels could pose a risk to health.

Human activities, including industrial development along coastal areas, risk polluting the marine environment with heavy metals which can harm human health and aquatic life. A recent study has found elevated levels of metal pollution in the Jade area of the German Wadden Sea, but concludes that metal contamination of the sediments would not be expected to have harmful effects on the marine environment and living organisms here.

Levels of toxic metals in batteries were not immediately reduced in line with new limits imposed by EU regulations, according to a survey from Germany. The study focuses on concentrations of toxic metals contained in batteries sold in Germany in 2010 and 2011, but its authors say the results are relevant to other EU countries.

Mercury-resistant bacteria could help scientists to understand more about mercury cycling in the environment. In a new study, researchers identified one particular strain of soil bacterium that could serve as a model for the conversion of the toxic metal into less toxic forms. They also discovered a new gene involved in the conversion process.

A study of the pollution caused by ship scrapping in Alang, India, shows significantly higher levels of heavy metal and petroleum hydrocarbons in sediment and seawater, compared to a control site. The researchers also found reduced populations of zooplankton — a critical food source for marine biota — and increased numbers of pathogenic bacteria.

Bangladesh’s economy is heavily dependent on ship recycling. However, the shipbreaking industry is polluting the Bay of Bengal, an area of high biodiversity. This study measured trace metals in sediments around the area, concluding that heavy metal pollution is at an alarming stage and an urgent threat to marine life.

A recent study has assessed the environmental impact of a group of technology-critical elements (TCEs) — niobium (Nb), tantalum (Ta), gallium (Ga), indium (In), germanium (Ge) and tellurium (Te) — that, to date, have been relatively under-researched. The researchers reviewed published concentrations of these elements in environmental archives and evaluated trends over time in surface waters. Overall, they found no evidence that the rising use of these elements in modern technologies is causing environmental concentrations to increase on a global level. These findings are relevant to future policy discussions regarding the source, usage and presence of less-studied TCEs, particularly in relation to critical raw metals.

Deposition of heavy metals and nitrogen is falling across Europe, a new study suggests. The researchers used the levels of these pollutants in mosses as indicators of how deposition has changed from 1990 to 2010. These reductions are likely to be the result of effective air pollution policies, they say.

Seaweed may prove to be a valuable tool to monitor metal pollution in coastal waters, new research has found. Spiral wrack seaweed (Fucus spiralis), which is common to rocky coastlines across western Europe, was found to contain concentrations of metals that rose and fell in line with concentrations in the surrounding seawater. This makes it a good candidate for inclusion in the European environmental specimen banks as part of an environmental monitoring network under the Marine Strategy Framework Directive.

Researchers have analysed the ability of two organic nanomaterials to remove the heavy metal chromium from water. In the laboratory, the nanomaterials successfully took up around 95% of the chromium. Further work is needed to confirm the feasibility of using these nanomaterials to purify water in real-world conditions.

A world in need of faster computers, smarter phones and more energy-efficient light bulbs threatens to strain the small supply of rare metals used by the global

New research seems to demonstrate that iridium, a rare metal found in meteorites, can kill cancer cells.

How do you build the world’s lightest metal? Make it mainly from air, according to scientists.

Researcher in Glasgow says he has created living cells made of metal instead of carbon — and they may be evolving.

New Integrated Control Center (ICC) for controlling and monitoring the entire continuous casting plant

･ The world’s first 6-stand tandem cold mill with Hyper UC-mills in all stands ･ Equipped with work roll shift function to enable precise edge profile control of electrical steels ･ Enables Shougang Qian’an to meet the growing demand for electrical steels

Amateur enthusiasts have uncovered some spectacular finds, including the Staffordshire Hoard and the Boot of Cortez.

Water- and Oil-resistant Photoelectric Sensor with Metal Housing Used for Long-range Sensing(E3S-C)

If you are in the market for loft beds or bunk beds, a major choice is wood versus metal. Depending on the overall look and size you desire, you will want to choose a differently constructed bed. Although both materials are both sturdy and safe, many individuals choose either metal or wood when searching for the optimum bed to fit the room.

The first one in the world for robo-delivery

A recent SmarTech report Additive Manufacturing With Metal Powders 2017 that projected the primary market for metal AM will grow to over $6.6 billion (USD) in 2026.

Firm will present findings from it's latest report on additive manufacturing with metal powders

Through Partnership With Classic Metal Roofing Systems, Local Roofing Company Adds Metal Shingle Services To Their Offerings

Could we see the yellow metal at $5,000 or even higher amid the coronavirus crisis? We invite you thus to read our today’s article and find out how high gold prices can go in this downturn.

Connecticut manufacturer has been supplying custom storage solutions since 1945.

Copper prices on Friday traded 0.48 per cent higher at Rs 408.75 per kg in futures market.

In the international market, silver was quoting 1.44 per cent higher at $15.82 per ounce in New York.

Another spectacular Sankey diagram from the final report of the project “Resource conservation through material flow-oriented secondary raw materials management” published by German Environment Protection Agency (Umweltbundesamt, UBA). This one is on non-ferrous metals in waste and recycling paths Germany. Flows are in mio. t for the year 2013.
[See image gallery at www.sankey-diagrams.com]
I had presented another Sankey diagam from this report (on paper and cardboard streams) here on the blog back in January. You can access the full report here.

Air quality is a critical issue affecting the health of billions of people worldwide, yet often little is known about what is in the air we breathe. To reduce air pollution’s health impacts, pollution sources must first be reliably identified. Otherwise, it is impossible to design and effectively enforce environmental standards. However, urban networks of air quality monitors are often too widely spaced to identify the sources of air pollutants, especially for pollutants that do not disperse far from their sources. Developing high-resolution pollution maps with data from these widely spaced monitors is problematic.