Biological processes, such as activated sludge and granular sludge are widely used to remove organic pollutants as well as inorganic pollutants, such as metallic elements1–3, which are known to be potentially toxic, and impact the performance of biological waste treatment processes4. Granular sludge is a dense aggregate of microorganisms, minerals, and microbial produced compounds such as extra...

It is an emerging realistic problem on how to promote a high level of technology in the coal industry, find new upgrading powers and create new competitive advantages, which are also the core problems to efficient transformation pattern of economic growth for coal industry in the ‘‘twelfth five-year’’ period, involving the key to China’s energy supply and energy security. Through field surveys ...

Chemical characterization of PM2.5 (major and trace elements) was carried out for a source apportionment study at traffic site in Constantine, Algeria, from March 2017 to 2018. For this purpose, several tools were used which PMF, CPF, PSCF, Spearman correlation matrix HYSPLIT back trajectories. The mean annual concentration the sampling 54.07 ± 28.81 µg/m3. This value is much higher than thresh...

this review reports recent advances in metallic nanostructures based electrochemical sensors. interesting aspects of nps include size and shape-dependent interatomic bond distances, melting points, chemical reactivity, and optical and electronic properties. the small size of metallic nanostructures has allowed nanoscale electrochemical processes to be probed. electrochemical characteristics can...

Foreword Livestock production is the predominant industry in Tibet Autonomous Region of China with significant numbers of yaks, cattle, horses, sheep and goats raised under various production systems. Little is known about the mineral and trace element status of these animals although it is suspected that they may be at risk from iodine and selenium deficiency. This report is the outcome of a c...

The present study was performed in order to evaluate the effects of lower than usual industry levels of dietary trace minerals on plasma levels, faecal excretion, performance, mortality and morbidity in growing-finishing pigs in a hot African climate. Group 1 (n = 100 pigs) received a diet with common industry levels of trace minerals. Group 2 (n = 100 pigs) received reduced dietary trace miner...

Metal/Silicate Fractionation: The process of re-golith formation on an asteroid normally results in the sorting of the asteroid's regolith, a process that would involve segregation of the denser, less brittle metallic from silicate particles. It has been proposed that, as a result of mobilization of volatiles, the position of this particle layer in the regolith would depend on initial size and ...

A review of zirconium dioxide or zirconia ZrO2 is presented. The finding compounds in nature, the physical and chemical properties are given, polymorphism oxide, phase diagrams systems with its participation considered. areas application highlighted: automotive industry, electronics energy industrial ecology, equipment manufacturing mechanical engineering production zirconium-based refractories...

Hydrodesulphurization (HDS) and hydrogenation are carried out by thermal treatment using hydrogen (H2) with the objective of either removing sulphur from material, or improving yield organic finally forming hydrides reaction elements contained in mineral matrix hydrogen. The kinetics simpler when is used compared to pyrolysis, order equal unity (A. Attaoui: 1993). Timahdit (Morocco) oil shale l...