Eucalyptus-based materials as adsorbents of heavy metals and dyes pollutants from (waste)waters

• Eucalyptus residues-based adsorbents for dyes and metals were reviewed. • High performance for modified and carbonized species relative to raw ones. • Adsorption isotherms, kinetics, thermodynamics, and mechanism were discussed. • Regeneration and reuse of adsorbents were applicable. Eucalyptus is the most widely planted type of hardwood trees. It considers as a cheap, renewable, and ecofriendly biomass source for the production of high value materials. In this context, Eucalyptus -based adsorbents in raw, modified, and carbonaceous forms have been efficiently applied to remove a variety of toxic and carcinogenic aquatic pollutants. This article provides a comprehensive review on the application of Eucalyptus -based adsorbents for the removal of heavy metal and dye pollutants from waste(water). The use of Eucalyptus residues such as bark, leaves, wood or sawdust, and seeds to prepare adsorbents is considered. The performance of Eucalyptus -based adsorbents towards the tested pollutants, as well as their reuse after regeneration is discussed. Furthermore, the adsorption isotherms, kinetics, thermodynamics, and mechanisms are also considered. Finally, the findings and future prospects for the Eucalyptus - based materials and their use as adsorbents for water treatment are presented.