Sawdust as Low-Cost Adsorbents for the Removal of Heavy Metals From Water

Sawdust is currently investigated as a sorbent to eliminate heavy metals from wastewater and other aqueous solutions. The raw material is relatively cheap and is available in abundance. Sawdust also helps to eradicate other contaminants, such as dyes, pesticides, phenols, toxic salts, etc. This literature discusses the elimination of heavy metals from wastewater through the help of sawdust. The composition of the sawdust, and the work done concerning the sorption of heavy metals, kinetics, adsorption isotherm, etc., are discussed in this study. The adsorption capacity of sawdust depends on the concentration of adsorbate, composition and characterisation of adsorbent, and the type of modifications. Also, the challenges faced during research are mentioned in this literature. More research should be done in this field to enhance the use of sawdust on large-scale cost-effectively.