Alkaline Earths

The formation of chelate complexes is often regarded as an exclusive property of transition metal cations, but both iminodiacetate and aminophosphonic resins chelate alkaline earth cations and consequently are highly selective for them relative to the alkali metal cations. Separation factors achievable with iminodiacetate resins are reported to be 50-60 for Mg/Na and 500-600 for Ca/Na at pH 7-10;

for aminophosphonate resins aMf + 1000 and aNl + 20 000. These resins are very effective in softening applications, including, as an extreme case, the removal of low levels of unwanted divalent cations from brine in caustic chlorine plants, despite the great excess of sodium ions.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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