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Hydrogen is produced in a catalytic hydrolysis reaction of sodium borohydride (NaBH 4 ) with ruthenium powder as a catalyst. The system consists of two main chambers: an upper chamber with granulated sodium borohydride powder and a lower reaction chamber with a solution of water and catalyst. Zakhvatkin et al. 1c00367.
A team from the Indian Institute of Technology Bombay has devised a heterogeneous acid catalyst, silica sulfuric acid, that shows high activity towards releasing hydrogen from sodium borohydride (NaBH 4 ), with a hydrolysis rate of 5.5 Issues included water handling and catalytic reactivity and durability. Earlier post.). 2014.11.040.
Produced water from coal-bed natural gas (CBNG) production may contain sodium bicarbonate (NaHCO 3 ) at concentrations that can harm aquatic life, according to a new study by the US Geological Survey; Montana Fish, Wildlife and Parks; the Bureau of Land Management and the US Environmental Protection Agency.
Researchers in Germany have produced a hydrocarbon-based bio-crude and non-condensable gases from the thermal degradation of free fatty acids and animal fat in the presence of water and sodium carbonate (Na 2 CO 3 , a sodium salt of carbonic acid commonly used as a water softener). 1 over a period of 6 months.
Prototype sodium silicate hydrogen generation system as presented earlier this year at DOE merit review. The H300 utilizes real-time swappable cartridges that generate hydrogen on demand using SiGNa’s proprietary sodium silicide (NaSi) powder. Sodium-Silica-Gel: 2Na-SG + H 2 O → H 2 + Na 2 Si 2 O 5. Click to enlarge.
Example of a lithium-water rechargeable battery. Researchers at the University of Texas, including Dr. John Goodenough, are proposing a strategy for high-capacity next-generation alkali (lithium or sodium)-ion batteries using water-soluble redox couples as the cathode. The present sodium-sulfur battery operates above 300 °C.
We’re then able to separate the pretreatment solution into two phases, a sugar-rich water phase for recovery and a lignin-rich ionic liquid phase for recycling. As an added bonus, our new pretreatment technique uses a lot less water than previous pretreatments. —Blake Simmons, corresponding author. —Blake Simmons.
Researchers at Pacific Northwest National Laboratory (PNNL) have devised an alloying strategy that enables sodium-beta batteries to operate at significantly lower temperatures. The new electrode enables sodium-beta batteries to last longer, helps streamline their manufacturing process and reduces the risk of accidental fire.
Seawater contains significant quantities of lithium—approximately 5,000 times more than is found on land—potentially providing an almost unlimited resource of lithium for meeting the rapid growth in demand for lithium batteries. 13000 ppm of sodium, magnesium, calcium, and potassium ions, among others). —Li et al.
Flowchart of Molten Sodium Upgrading process. An innovative oil-upgrading technology that can increase the economics of unconventional petroleum resources has been developed under a US Department of Energy-funded project. Source: Field Upgrading. Click to enlarge. Click to enlarge.
The hot brine that comes up from the subsurface as part of geothermal power production at the Salton Sea in California is a rich stew of minerals, including iron, magnesium, calcium, sodium, and lithium. We’ll look at how quickly might you expect the resource to be regenerated—is it centuries? Credit: Jenny Nuss/Berkeley Lab).
a clean water company that recovers phosphorus and nitrogen from industrial and municipal wastewaters to create premium fertilizers, completed a US$14.5-million Ostara Nutrient Recovery Technologies Inc., million private equity financing. a fund managed by FourWinds Capital Management. a fund managed by FourWinds Capital Management.
Sodium-ion batteries (Na-ion, NIBs) are seen as an alternative to lithium-ion batteries for large-scale applications due to their lower cost and abundant supply of sodium. We also demonstrate a battery with the stibnite–graphene composite that is free from sodium metal, having energy density up to 80? Yu, Petr V. Mason, Sudip K.
The thermochemical production of hydrogen and oxygen from water via a series of chemical reactions is of interest because it directly converts thermal energy into stored chemical energy (hydrogen and oxygen), and thus can take advantage of excess heat given off by other processes. —Xu et al. NaMnO 2 at 850 °C; Na + extraction from ?-NaMnO
Schematic representation and operating principles of the lithium–water electrochemical cell used for hydrogen generation: (1) external circuit and (2) inside of lithium–water electrochemical cell. the high-school chemistry demonstration of the violent reaction between sodium and water.). sea water) by using sunlight.
The circulating seawater in the open-cathode system results in a continuous supply of sodium ions, endowing the system with superior cycling stability that allows the application of various alternative anodes to sodium metal by compensating for irreversible charge losses. an alloying material), in full sodium-ion configuration.
Generation of H 2 and O 2 from untreated water sources represents a promising alternative to ultrapure water required in contemporary proton exchange membrane-based electrolysis. Resources D.H. The results of their study, published in Joule , could help advance efforts to produce low-carbon fuels. Marin, J.T. Perryman et al.
Schematic representation of the working principle behind a complete cycle of the desalination battery, showing how energy extraction can be accomplished: step 1, desalination; step 2, removal of the desalinated water and inlet of seawater; step 3, discharge of Na + and Cl ? in seawater; step 4, exchange to new seawater. Click to enlarge.
A team of researchers from Tufts University, the University of Wisconsin-Madison and Harvard University report that alkali ions (sodium or potassium) added in small amounts activate platinum adsorbed on alumina or silica for the low-temperature water-gas shift (WGS) reaction (H 2 O+CO→ H 2 +CO 2 ) used for producing hydrogen.
The nanosized crystalline primary particles and high surface areas enable an increased rate of photocatalytic hydrogen production from water and extended working life. They then treat the material with a sodium potassium alloy. Micrograph of mesoporous silicon with sodium chloride and potassium chloride salts embedded in the matrix.
Researchers from Tatung and National Cheng Kung Universities in China, and Case Western Reserve University in Ohio, report manufacturing a new oxygenate additive for diesels (bio or petroleum) using glycerol (a major byproduct of biodiesel production), dimethyl sulfate (DMS), and sodium hydroxide pellets as raw materials. —Chang et al.
Canadian oil sands are a complex mixture of sand, clays, water, and bitumen. For surface mining oil sands production, a hot water extraction process (HWEP) has been widely applied. In this process, hot water and processing aids are mixed with oil sands to liberate bitumen from the minerals by shearing the oil sand particles.
The deposit contains 136 million tonnes of declared resources. Following ramp-up to full production in 2029, the mine will produce ~58,000 tonnes of lithium carbonate, 160,000 tonnes of boric acid (B 2 O 3 units) and 255,000 tonnes of sodium sulfate annually, making Rio Tinto one of the top ten lithium producers in the world.
With the depletion of light oil resources and rising energy demands, the successful recovery of heavy oil is becoming increasingly important. To yield more oil, water may be injected into the reservoir to maintain pressure in order to keep the flow moving. —Yuichiro Nagatsu, corresponding author. —Yuichiro Nagatsu.
Using electrolyzed water rather than harsh chemicals could be a more effective and environmentally friendly method in the pretreatment of ethanol waste products to produce an acetone-butanol-ethanol fuel mix, according to research conducted at the University of Illinois. Resources. coli on fresh fruits and vegetables.
These plants pump hot water from geothermal deposits and use it to generate electricity. The LDH sorbent is made up of layers of the materials, separated by water molecules and hydroxide ions that create space, allowing lithium chloride to enter more readily than other ions such as sodium and potassium. Lili Wu, Samuel F.
Fresh water is then used to release the stored lithium. Purification of the lithium, then reaction with sodium carbonate to convert it to lithium carbonate. 3,500/t LCE EXW), with large-scale drainable resources (nearly 10 Mt LCE). Once filtered again and washed, it achieves the chemical quality of the finished product. .$3,500/t
Saint-Gobain Glass then mixes the recyclate with, among other things, quartz sand, sodium carbonate, and chalk—the basic components of glass. To do that, the glass granulate is initially segregated by type for clear verification of source and color and then stored in bins. That will mean that the company will emit up to 75 tons less CO?
The electrolyte is transformed into a sodium sulfate salt, which is then used in textiles, glass, and detergent manufacturing. Department of Natural Resources Stewardship Program, and storm water management. More than 98% of the batteries are recycled. Iron by-products are used in other industrial processes.
In the mid-20 th century, chemical companies successfully created magnesium feedstock from seawater by mixing it with sodium hydroxide, commonly known as lye. For example, the sodium hydroxide used to extract the magnesium salt can be generated on site using seawater and marine renewable energy. —Wang et al. 2c00229.
Researchers say the device, composed of inexpensive non-noble metal nitrides, manages to avoid many of the obstacles that have limited earlier attempts to inexpensively produce hydrogen or safe drinking water from seawater. The work is described in an open-access paper in Nature Communications.
The TWR commercial reactor plant design is a 1,150 MW liquid-sodium-cooled fast reactor that uses depleted uranium as fuel. The novel design allows for the use of depleted uranium generated by the enrichment process used for existing light water reactors fueled with enriched uranium. Resources. Source: TerraPower. Petroski, J.
Researchers at Wuhan University in China have developed a new electrochemical cell, PANI/Li x Mn 2 O 4 , for selective recovery of Li + ions from brine water with high impurity cations (K + , Na + , Mg 2+ , etc). free technology for Li + extraction from brine waters. 1 LiCl and a strong cycle ability with 70.8% Zhao et al. Zhao, A. ,
Bicarbonates are a component of many natural stones and are also commonly used as baking powder or sherbet (sodium bicarbonate, NaHCO 3 ). to sodium formate in 96% yield at 70 °C in water/THF without additional CO 2. In comparison to CO 2 , solid bicarbonate is easy to handle and is very soluble in water.
In addition to its advantage of size, the presence of hydrogen as a constituent of water enables fast conduction of protons in aqueous systems by a displacive mechanism first postulated by von Grotthuss in 1806. Computational scientists have made tremendous progress on understanding how the proton hopping really occurs in water.
EO28), were identified in hydraulic fracturing flowback and produced water using a new application of the Kendrick mass defect and liquid chromatography/ quadrupole-time-of-flight mass spectrometry. The Kendrick mass defect differentiates the proton, ammonium, and sodium adducts in both singly and doubly charged forms. Resources.
The new approach, described in an open access paper in the journal Biotechnology for Biofuels , potentially could significantly reduce costs of sugar production from lignocellulose by eliminating the need for costly enzymes and decreasing the water consumption requirements. Significantly reduced volume of water (.
Researchers led by a team from Griffith University in Australia have developed a multifunctional polymer binder that not only maintains the outstanding binding capabilities of sodium alginate but also enhances the mechanical integrity and lithium-ion diffusion coefficient in a LiFePO 4 (LFP) electrode during the operation of the batteries.
They quantified energy and material resource requirements for currently available energy storage technologies: lithium ion (Li-ion), sodium sulfur (NaS) and lead-acid (PbA) batteries; vanadium redox (VRB) and zinc-bromine (ZnBr) flow batteries; and geologic pumped hydroelectric storage (PHS) and compressed air energy storage (CAES).
Also, the conversion requires the toxic chemicals sulfuric acid and either potassium hydroxide or sodium hydroxide. Waste vegetable oil is made up of triacylglycerols, free fatty acids, and water. The second reaction converts the triacylglycerols into biodiesel, but that conversion requires sodium hydroxide or potassium hydroxide.
Uranium in nuclear fuel rods is in a chemical form that is “pretty insoluble” in water, said Professor Alexandra Navrotsky, UC Davis, corresponding author on the paper, unless the uranium is oxidized to uranium-VI—a process that can be facilitated when radiation converts water into peroxide, a powerful oxidizing agent.
A team of researchers from universities and national laboratories led by Tufts University has developed catalysts composed of a unique structure of single gold atoms bound by oxygen to several sodium or potassium atoms and supported on non-reactive silica materials. This single-site gold species is active for the low-temperature (.
Westinghouse AP-1000, advanced pressured water reactor (APWR, about 1,200MW capacity. GE Hitachi ABWR (advanced boiling water reactor), 1,300-1,600MW. India PHWR (pressurized heavy water reactor),540-700MW. Sodium-cooled fast reactor (SFR). Super-Critical Water-cooled Reactor (SCWR). GE Hitachi ESWBR, 1600 MW.
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