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Herc Rentals is an equipment rental company, owned by Herc Holdings. It was formerly a subsidiary of The Hertz Corporation before being spun-off as a separate company in 2016. The company provides rentals of heavy equipment , [ 3 ] tools, power generators and pumps, [ 4 ] as well as sales of used equipment.
Iron(II) sulfide or ferrous sulfide (Br.E. sulphide) is one of a family of chemical compounds and minerals with the approximate formula Fe S. Iron sulfides are often ...
The oxidation of the sulfide to sulfate solubilizes the ferrous iron , which is subsequently oxidized to ferric iron : 4 Fe 2+ (aq) + O 2 (g) + 4 H + (aq) → 4 Fe 3+ (aq) + 2 H 2 O (l) Either of these reactions can occur spontaneously or can be catalyzed by microorganisms that derive energy from the oxidation reaction.
Iron(II,III) sulfide is a blue-black (sometimes pinkish [citation needed]) chemical compound of iron and sulfur with formula Fe 3 S 4 or FeS·Fe 2 S 3, which is much similar to iron(II,III) oxide. It occurs naturally as the sulfide mineral greigite and is magnetic. It is a bio-mineral produced by and found in magnetotactic bacteria.
Equipment rental was first developed in Anglo-Saxon countries. It emerged in the UK after the First World War and has now become a multi-billion euro business providing a wide range of construction and industrial equipment for customers globally.The American Rental Association was founded as early as 1955, [1] and the first waves of consolidation took place in the 1970s in North America ...
Oxidation of pyrite in clay formations in contact with concrete – this produces sulfuric acid which reacts with concrete. Bacterial activity in sewers – anaerobic sulfate reduction at work in the organic-rich sludges accumulated under water in the conduits produces hydrogen sulfide gas (H 2 S).