Chementator
Piloting a new sewage-treatment process to tackle emerging contaminants
As new types of water contaminants continue to emerge, such as retinoids and endocrine-disrupting chemicals, wastewater-treatment techniques are evolving to economically handle them. One new process that has shown promise against both conventional and emerging water pollutants integrates two technologies…
First industrial-scale plant uses CO2-lean cement production
By replacing part of cement clinker with calcined (thermally activated) clay, CO2 emissions in cement production are lowered by up to 40%, according to thyssenkrupp Industrial Solutions AG (Essen, Germany; www.thyssenkrupp-industrial-solutions.com), which developed the technology known as “polysius activated clay.”…
Ion-exchange beads for lithium extraction
With lithium demand higher than ever, processors are increasingly turning toward emerging technologies and new resources for lithium extraction. A new California-based project launched by Controlled Thermal Resources (CTR; Imperial, Calif.; www.cthermal.com) and Lilac Solutions (Oakland, Calif.; www.lilacsolutions.com) aims to…
‘Artificial photosynthesis’ system design overcomes problem of fast proton flow
Artificial photosynthesis systems seek to harvest sunlight and carbon dioxide to make fuels. Among the many challenges for making solar fuels has been achieving a fast flow of protons from where they are generated to where they combine with CO2…
New catalyst selectively promotes hydrodeoxygenation reaction
Scientists at Brookhaven National Laboratory (BNL; Upton, N.Y.; www.bnl.gov) and the University of Delaware (Newark; www.udel.edu) have designed a catalyst capable of selectively removing oxygen atoms from the side chain of an aromatic compound without affecting the ring. The team…
MOFs and nanochannels enable lithium extraction from brines
Lithium is a key raw material for batteries that power electric vehicles, portable electronics and more, but traditional methods for obtaining it are plagued by poor lithium recovery (a large portion of Li is lost in the recovery process), slow…
A desalination process that pumps ions instead of water
Researchers from Indonesia’s Bogor Agricultural University (Bogor, Indonesia; www.ipb.ac.id), the University of Bath (U.K.; www.bath.ac.uk), and the University of Johannesburg (Johannesburg, South Africa; www.uj.ac.za), led by Budi Riza Putra, have developed a low-cost, low-energy and low-maintenance, solar-powered desalination system that…
This gold catalyst improves CO2 reduction
Researchers from the Korea Advanced Institute of Science and Technology (KAIST; Daejeon; www.kaist.ac.kr) have developed a three-dimensional (3D) hierarchically porous nanostructured catalyst that is said to have a CO2-to-CO conversion rate up to 3.96 times higher than that of conventional…
Semiconducting material combines handedness and polarity
A semiconducting material synthesized by researchers at Rensselaer Polytechnic Institute (RPI; Troy, N.Y.; www.rpi.edu) could enable new ways of manipulating electronic materials remotely using light. The material, explains RPI professor of materials science and engineering Jian Shi, derives its unique…
Wood-supported catalyst safely keeps fruit fresh
Ethylene is a multifunctional phytohormone that regulates growth, ripening and other functions in plants. For example, bananas stored next to apples will ripen quickly due to the ethylene released from the apples, which in turn are triggered to release more…