Recent trends in Ni(II) sorption from aqueous solutions using natural materials

Abstract The use of materials natural origin for the adsorption heavy metal ions from aqueous solutions has gained attention in recent years among scientific community. This is explained by fact that nickel compounds, due to severe health consequences, are considered be most dangerous environment. article reviews results studies on biosorbents purification ions, and then attempts classify them according their origin. characteristics sorption capacity have been compared, removal mechanisms identified which chemisorption ion exchange common. From analyses, a major trend biomass; however, other groups also continue attract interest researchers. Conducting laboratory can help select with high efficiency. highest values each group were: waste products 56 mg Ni·g −1 (olive stone), peat 61 , miscellaneous 225 (microbial flocculant GA1), biomass 286 ( Plantanus orientalis bark) composites/modified calcinated eggshells 769 (calcinated eggshells). However, some phenomenon may accompanied precipitation presence hydroxides, significantly affects achieved. There need transfer these experiments an industrial scale so as verify applicability. In such applications, should paid not only effectiveness material, but its availability, price, ease use, well effect biosorbent terms changing quality parameters aquatic