Bauxite residue (red mud) is a byproduct from the smelting of aluminum. Like other waste slags from the metallurgy industry, bauxite residue is traditionally put into hazardous-waste landfills, although it contains a mixture of valuable raw materials in low concentrations.…
Granular activated carbon (GAC) can be used to remove polyfluoroalkyl substances (PFAS) from groundwater and drinking water, but current methods to regenerate spent GAC are costly and require high temperatures of greater than 1,000°C. A team of scientists at Battelle…
A collaborative research group in Japan has engineered a self-sustaining device that can detect the presence of COVID-19 particles or droplets in air. The device, which requires no batteries, employs a magnetostrictive clad plate composed of iron, cobalt and nickel,…
Spring-loaded pressure-relief valves (PRVs) often use bellows to ensure balanced operation. Data analysis from 30,000 PRV service records across different industries and valve brands shows a bellows failure rate between 2 to 6%, according to Emerson (St. Louis, Mo.; www.emerson.com).…
Microorganisms populate nearly any habitat, no matter how hostile it is. Their great variety of survival strategies is of huge potential in biotechnology. However, most of these organisms are unknown, because they cannot be cultivated. To make better use of…
Scientists from Nanyang Technological University, Singapore (NTU Singapore; www.ntu.edu.sg) have developed a technique to convert waste paper, from single-use packaging, bags and cardboard boxes, into electrodes, which can be made into rechargeable batteries that power mobile phones, medical equipment and…
LuminUltra Technologies Ltd. (Fredericton, N.B., Canada; www.luminultra.com) recently launched a suite of DNA-based monitoring tools specifically designed to address organisms linked to microbiologically influenced corrosion (MIC). The collection enables industrial users to collect, prepare and test samples for a range…
LanzaTech Inc. (Chicago, Ill.; www.lanzatech.com) has developed a genetically engineered bacterium capable of converting carbon dioxide directly to ethylene, the most widely used chemical building block globally. The company has incorporated the engineered biocatalyst into a continuous process in a…
Li extraction A new technology is going to be introduced at the Schlumberger NeoLith Energy direct lithium-extraction (DLE) project in Clayton Valley, Nev. Developed by Gradiant Ventures (Boston, Mass.; www.gradiant.com), the technology enables high levels of lithium concentration (while simultaneously…
In late October, Metso Outotec Corp. (Helsinki, Finland; www.mogroup.com) introduced the DRI (direct reduced iron) Smelting Furnace to substitute blast furnaces used in iron- and steelmaking. The furnace was developed to tolerate high-slag volumes, which are problematic for a conventional…