![]() It was apparent from a literature survey that the Langmuir and Freundlich isotherms are by far the most widely used models for the biosorption equilibria representation, while pseudo-first and second order kinetic models have gained popularity among kinetic studies for their simplicity. This paper also discusses the equilibria and kinetic aspects of biosorption. The current spectrum of effective adsorbents includes agricultural waste material, various algae, bacteria, fungi and other biomass. Undoubtedly, the biosorption process is a potential technique for heavy metal econtamination. This paper attempts to present a brief summary of the role of biomass in heavy metal removal fromaqueous solutions. "Heavy metal pollution has become a more serious environmental problem in the last several decades as a result of its toxicity and insusceptibility to the environment.
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