Components of Millet Biomass as Sorption Materials to Remove Various Pollutants from Aqueous Media (a Brief Literature Review)

The paper provides literature data on using millet biomass components (straw, husk, and bran) as sorption materials to remove various metal ions and dyes from aqueous media. It also presents data on the sorption capacity of millet biomass components for various pollutants. The analysis revealed that the adsorption isotherms, in most cases, are more accurately described by the Langmuir and Freundlich models, and the process kinetics most often follows the pseudo-second-order model. It has also been shown that millet biomass components can be used as precursors to produce activated carbons and carbonizates, which are also effective sorbents to remove various pollutants from simulated and real wastewater.