Several kinds of agricultural waste have natural deionising property.
The possibility of producing low cost adsorbents gained from agricultural waste enhanced many researchers’ interest.
In the last few years, several products with deionising characteristics were prepared from agricultural materials.
Including sawdust, sugar-cane bagasse, wheat-husk, the corn-cob, rice husk, soya husk, tobacco, peanut husk pellet, orange wastage, banana peel, etc.
These papers showed that different chemical treatments could be used successfully for improving the sorption capacity or the chemical characteristics of biological polymers – like the fibres containing starch or cellulose.