Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially to another when both metals are in electrical contact, in the presence of an electrolyte. This same galvanic reaction is exploited in primary batteries to generate an electrical voltage.n other cases, such as mixed metals in piping (for example, copper, cast iron and other cast metals), galvanic corrosion will contribute to accelerated corrosion of parts of the system. Corrosion inhibitors such as sodium nitrite or sodium molybdate can be injected into these systems to reduce the galvanic potential.
Iron. Iron is an essential mineral, with several important roles in the body. For example, it helps to make red blood cells, which carry oxygen around the body.A lack of iron can lead to iron deficiency anaemia.Good sources of iron include: 1  liver. 2  meat. 3  beans. 4  nuts.5  dried fruit â such as dried apricots.ron. Iron is an essential mineral, with several important roles in the body. For example, it helps to make red blood cells, which carry oxygen around the body.
Iron is an essential nutrient because it is a central part of hemoglobin, which carries oxygen in the blood. Iron deficiency anemia is a worldwide health problem that is especially common in young women and in children. Iron is found in food in two forms, heme and non-heme iron. Heme iron, which makes up 40 percent of the iron in meat, poultry, and fish, is well absorbed. Non-heme iron, 60 percent of the iron in animal tissue and all the iron in plants (fruits, vegetables, grains, nuts) is less well absorbed.