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Boosting the performance of a zero-gap flow microbial fuel cell by immobilized redox mediators.
Chempluschem
January 2025
Dmitry Mendeleev University of Chemical Technology of Russia, EMCPS Department, Miusskaya sq.9, 125047, Moscow, RUSSIAN FEDERATION.
Although microbial fuel cells (MFC) could be a promising energy source, their implementation is largely limited by low performance. There are several approaches to overcome this issue. For example, MFC performance can be enhanced using redox mediators (RM) capable of transferring electrons between microorganisms and MFC electrodes.
View Article and Find Full Text PDFImprovement strategies for fats and oils used in future food processing based on health orientation and sustainability: research progress, challenges and solutions.
Crit Rev Food Sci Nutr
December 2024
Zhengzhou Xuemailong Food Flavor Co. R&D Center, Zhengzhou, Henan, China.
As the third largest source of energy in addition to carbohydrates and proteins, lipids provide the body with more than twice as much energy as carbohydrates and proteins and are the accumulated "fuel bank" of the body. They are widely stored in animals, plants and microorganisms and are effectively extracted for dietary use by improved and novel technologies. Under the pressure of the current environment, we should immediately look for new strategies to improve or develop dietary lipids that are compatible with the development of the future food industry, in order to mitigate the environmental and climatic degradation caused by the lipid-producing activities of the animal husbandry industry, to avoid the contradiction between the demand for high quality of human beings and the strain on the resources, and to reduce the health risks caused by saturated fats and trans-fats in meat products.
View Article and Find Full Text PDFElucidating Confinement and Microenvironment of Ru Clusters Stably Confined in MFI Zeolite for Efficient Propane Oxidation.
Angew Chem Int Ed Engl
November 2024
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, P.R. China.
Article Synopsis
- Encapsulating noble metal species in zeolites can improve the performance and efficiency of catalysts used in thermal and environmental reactions, particularly with Ru which is a cost-effective alternative.
- The study developed a method combining hydrothermal processes and stepwise calcination to stabilize Ru clusters within MFI-type zeolite, leveraging special sites for better integration.
- Results indicate that the unique environment created by the Ru clusters and MFI enhances catalytic activity for alkane oxidation even at low temperatures, while maintaining stability up to 1000°C, thus providing important insights for future catalyst design.
Investigation of short-term chemical changes in stable ruthenium added to soil by using X-ray absorption fine-structure analysis.
Radiat Prot Dosimetry
November 2024
Department of Radioecology, Institute for Environmental Sciences, 1-7, Ienomae, Obuchi, Rokkasho, Kamikita, Aomori, 039-3212, Japan.
Article Synopsis
- - Radioactive ruthenium can be accidentally released from nuclear fuel reprocessing plants, but there's limited research on its environmental behavior due to its complicated chemical properties.
- - A study was conducted using X-ray absorption fine-structure analysis to examine different chemical forms of stable ruthenium (like RuO4, RuO2, Ru(NO)(NO3)3, and RuCl3) added to soil, revealing how they react and change over time.
- - Results indicated that some forms (e.g., RuO4 and RuCl3) change quickly when in soil, while others (like RuO2 and Ru(NO)(NO3)3) are stable, highlighting the importance of understanding the chemical forms of ru
Thermodynamic evaluation of contrail formation from a conventional jet fuel and an ammonia-based aviation propulsion system.
Commun Eng
November 2024
Mechanical Engineering Department, Tennessee Tech University, Cookeville, TN, USA.
Article Synopsis
- The study analyzes the formation of contrails from ammonia-powered engines compared to traditional jet fuel engines, focusing on thermodynamic processes like supersaturation and ice nucleation.
- It calculates how moisture from exhaust affects atmospheric conditions, determining the potential for contrail visibility based on temperature and humidity changes.
- Findings suggest that ammonia contrails are less dense but can form at lower altitudes and last longer due to higher moisture content, despite not producing soot which typically aids contrail formation.
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