While Americans remain unfamiliar with fuki, Japanese farmers grow vast amounts of the vegetable (also known as sweet coltsfoot or giant butterbur) for their rhubarb-like stalks. Another colony-former, fuki grows where few other vegetables will---in wet, dark places. The leaves grow quite large, and the entire plant takes up a good deal of room, growing 3 to 6 feet high and wide. After harvesting the stalks, cut them into 6-inch pieces, blanch to loosen the outer skin, then peel.
Summary Acid mine drainage (AMD) refers to the outflow of acidic water from a mining site. In most cases, this acid comes primarily from oxidation of iron sulfide (FeS2, also known as pyrite or fool's gold), which is often found in conjunction with valuable metals.
This is commonly referred to as acid mine drainage (AMD) and can occur in paste backfill when the neutralizing reactions from carbonate minerals (or hydrates in the case of cemented paste backfill) are exhausted and when oxygen is available.Cesbron (2001) summed the mineralogy of the oxide phases of arsenic.8). These compounds come from the oxidation of arsenopyrite to essentially iron arsenites and arsenates. Result for fresh arsenopyrite only shows arsenic in a reduced sulphide form (As 2) 2â (for which the position is given by a line in Fig. 17).