As the land so cleared fell into disuse, the soil began to
leach and become more acidic, producing a suitable environment for the growth of heather and rushes.
Geography of Ireland
leaching and groundwater leakage still causes some pollution.
Lake Burley Griffin
leached yellower sands, the community (and B. aemula) is replaced by a taller heath containing B. serrata and B. oblongifolia.
Like most Adenanthos species it is common on deeply
leached siliceous sandplain sand.
Locally known as Karrakatta Sand, it is almost certainly the
leached remnants of coastal sand deposited by eolian processes in the late Pleistocene period, between 11,000 and 100,000 years ago.
Hamersley, Western Australia
Once the gold-bearing rocks were brought to the surface, the rocks were crushed, and the gold was separated out (using moving water), or
leached out, typically by using arsenic or mercury (another source of environmental contamination).
California Gold Rush
The aluminium sulfate in it is converted to the insoluble aluminium oxide by roasting the alum with carbon, and the resulting product is
leached with water to yield a Cs2SO4 solution.
The contamination of the karst underground waters is due to the large number of waste disposal sites
leached by rainwater, as well as to the accidental overflow of various liquids.
The dumps of the past mining operations
leach significant amounts of zinc and cadmium, and, as a result, the sediments of the Geul River contain significant amounts of heavy metals.
The gyromitrin is
leached into the water where it will remain, therefore the parboiling water must be discarded and replaced with fresh water after each round of boiling.
The mine used a chemical extraction process known as vat
leaching involving the use of a weak cyanide solution.
The plant distribution is influenced by the dunes' age as well as their moisture content, the deposits becoming less alkaline as calcium carbonate from animal shells is
leached out of the sand to be replaced by more acidic humus from plant decomposition products.
The primary danger with such a course is that the waste is likely to come into contact with water, which could
leach radioactive contamination into the environment.
The water content of the fumaroles' gases decreased, and water springs in the vicinity of Nevado del Ruiz became enriched in magnesium, calcium and potassium, which were
leached from the magma.
Nevado del Ruiz
The water content of the fumaroles' gases decreased, and water springs in the vicinity of Nevado del Ruiz became enriched with magnesium, calcium and potassium,
leached from the magma.
To improve the
leaching process in the gold cyanidation, lead(II) nitrate solution is added.
Van Erp used concrete from which alkali salts and calcium hydroxide
leached and were transported into the rest of the construction.