The influence of sodium chloride on dissolution of chalcopyrite and surface sulfur speciation during bioleaching of chalcopyrite with the extreme thermophile Acidianus manzaensis YN-25 was studied. The addition of sodium chloride accelerated the dissolution of chalcopyrite by reducing the accumulation of elemental sulfur layers on the mineral surface, resulting in an increase in the concentrati...

The major "benefit" alleged to accrue from transpiration (the evaporative loss of water from plant surfaces) is that it is essential for the long-distance transport of mineral ions, but the possible interrelation between these two processes has rarely been tested. Transpiration was experimentally dissociated from mineral supply by growing sunflowers (Helianthus anuus) in hydroculture and provid...

Hydroxyapatite, the main mineral phase of mammalian tooth enamel and bone, grows within nanoconfined environments and in contact with aqueous solutions that are rich in ions. Hydroxyapatite nanopores of different pore sizes (20 Å ≤ H ≤ 110 Å, where H is the size of the nanopore) in contact with liquid water and aqueous electrolyte solutions (CaCl2 (aq) and CaF2 (aq)) were investigated using mol...

Ca and P were supplied simultaneously to young Phaseolus vulgaris L. seedlings grown in solution. After short periods of uptake, the Ca/P ratios in opposite leaves and opposite leaflets were very similar. This relationship also held when Ca and Cs were paired. Ca/P ratios in lateral halves of the same leaf were in good agreement, also. However, the basal halves of leaves always had higher Ca/P ...

The aims of this study were to evaluate the quantitative and qualitative chemical compound of the calcium and phosphorus ions on the carious radicular dentine surfaces resulted after lesional treatment with Carisolv system and to compare with the healthy radicular surfaces. EDX method was used for quantitative and qualitative chemical microanalysis of dentine radicular surfaces. This method als...

Two common waste materials, red mud and fly ash, were used to produce a new nano-hybrid adsorbent by heat treatment with alkali addition. The new zeolitic structure formation of the hybrid adsorbent was revealed using the BET surface area, XRD, and SEM analyses. This hybrid adsorbent was utilized to remove arsenic from synthetic and real waste waters by batch and column adsorption experiments. ...

In the present research synthesis of zeolites, merlinoite minerals of natural clinoptiloite mineral in the presence of alkaline mediums, was investigated. The analyzed variants are a result of a concentration of Na+ and K+ ions, temperature and time. Phase transition of clinoptiloite was conducted in the presence of an 8 molar potash solution (KOH) and a 4 molar soda solution (NaOH). Results in...

The objective of the investigation was to ascertain the effect of storage to the seed membrane integrity and mineral ions leakage of horse gram seed by vigour and biochemical test results on mineral composition of the seed soaked solution used for the electrical conductivity reading. Analysis revealed storage temperature has great impact to the seed coat integrity and K is the most important io...