A novel magnesium modified rice husk biochar (MRB) was synthesized for toxic metal stabilization prior to the vegetation reclamation of mine tailing. Manganese tailing was mixed with the amendments followed by 90 days of incubation to investigate the variation of Mn leachability as a function of...

The aim of this study was to investigate the role of MgO on the long-term operation of a mixed media contactor. Specifically, the simultaneous removal of aqueous manganese and the remineralization of soft waters using pure calcite is limited by a remineralization breakthrough after 600h of...

Manganese (Mn) contained in cellulose is partially responsible for an increased consumption of paper bleaching chemicals (like O2, H2O2), consequently diminishing the efficiency in pulp processing, darkening the pulp and deteriorating pulp quality. Usually, Mn in the paper industry is removed...

The aim of this project was to develop a detailed physical understanding of the thermodynamic and kinetic behaviour of precipitation in high manganese austenitic steels and to provide essential data for the modelling of technologically important (iron-carbide and transition-metal-carbide)...

The aim of this project was to develop a detailed physical understanding of the thermodynamic and kinetic behaviour of precipitation in high manganese austenitic steels and to provide essential data for the modelling of technologically important (iron-carbide and transition-metal-carbide)...

The aim of this study was to evaluate the impact of microbial phytase addition to laying hen diet on the balance of phosphorus, calcium, manganese and zinc. Phytase supplementation caused a decrease in phosphorus excretion by 8% in the group with low-phytase diet and 21% in the group with...

The aim of this study was to evaluate the impact of microbial phytase addition to laying hen diet on the balance of phosphorus, calcium, manganese and zinc. Phytase supplementation caused a decrease in phosphorus excretion by 8% in the group with low-phytase diet and 21% in the group with...

Governments may decide to control the export of unprocessed raw materials hoping that this will promote local downstream industries. There is scant empirical examination of the actual outcomes of such policies put in place. This paper describes use of export control measures by four...

Basic ferro-alloys are some of the most important ingredients for producing carbon and special steel (using ferrochrome). The market of basic ferro-alloys is somehow independent of other raw materials markets, depending mostly of steel. There are sometimes speculative operations, but they do not...

Since the beginnings of venture creation the traditional role of the entrepreneur changed from only being the owner of a small business to include those individuals within a large company who has entrepreneurial skills and applies these to benefit the company. In an ever faster growing global...

Aim: To assess the effect of chronic manganese chloride exposure on testis and sperm parameters. Methods: Twenty four male rats, 6 months old, were divided in 2 groups. 12 rats in the lot exposed to manganese, were watered by water containing manganese chloride tetrahydrate (MnCl2 4H2O) at dose...

Oxygen-carrier materials for chemical-looping with oxygen uncoupling (CLOU) must be capable of taking up and releasing gas-phase O2 at conditions relevant for generation of heat and power. In principle, the capability of a certain material to do so is determined by its thermodynamic properties....

Cleaning of producer gas from biomass gasification is required for further processing, e.g. to avoid catalyst poisoning in subsequent conversion steps. High-temperature gas cleaning, of which sulfur removal is an important part, is a promising way to improve the overall efficiency of biomass...

This paper discusses concentrations of 7 essential trace metals (chromium,cadmium, copper, lead,nickel, manganese and zinc) in water, sediment and freshwater fish (Clarias. gariepinus) tissues from Oke-Afa Canal, Lagos Nigeria The sampling and analysis of the samples from Oke Afa canal were...

Plasma-based ion implantation was used to synthesize the manganese nitride Mn4N by implanting nitrogen in manganese layers first deposited by sputtering assisted by multi-dipolar microwave plasma. The structural characterization of the layer has been performed using X-ray diffraction at grazing...

Unternehmenskonzentrationen im Weltbergbau warfen die Frage auf, ob die bisher problemlose Rohstoffversorgung der deutschen Wirtschaft über die Weltmärkte und ohne wesentliche eigene Rohstoffengagements im Ausland gefährdet werden könnte. In der Studie werden die Märkte von zehn...