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Energy systems of the future will need to be cleaner, more reliable, much efficient and sustainable. Hydrogen looks a promising energy carrier and considered to be one of the best candidates for replacing fossil fuels. But hydrogen is not an elemental form (H2), it is found in nature only as part of other compounds such as natural gas, petroleum and coal, and can be produced generally by steam reforming...
This paper describes the experimental findings of the extraction of nickel and cobalt by high pressure acid leaching (HPAL) of a refractory limonitic nickel laterite ore from the Gördes region of Manisa in Turkey. By optimizing the basic HPAL process parameters: leaching at 255°C with 0.30 sulfuric acid to ore weight ratio with a particle size of 100% −850μ for 1h of leaching, it was found that 87...
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