“Credit for recognition of the phenomenon of ion-exchange is generally attributed to two agriculture chemists, H.S. Thompson and J. Thomas Way. In 1848, Thompson reported to Way that after “filtration of liquid manure…through a bed of an ordinary loamy soil…the urine was deprived of colour and smell—in fact, that it went in manure and came out water.” [5].” (https://www.sciencedirect.com/science/article/abs/pii/S0021967303005284)