Biosorption is a biotechnological breakthrough that provides an efficient, low-cost approach for detoxifying water of toxic metals. As so, it is illustrative of a common method for making use of less expensive biological alternatives for the same effect. One of the most important parts of modern environmental and bioresource technologies is biosorption. Due to their high surface to volume ratio, abundant availability, quick kinetics of adsorption and desorption, and low cost, the use of microorganisms (such as bacteria, algae, yeasts, and fungus) as biosorbents for heavy metal removal is attracting increasing attention. This review of the literature centres on different biosorbents, different biosorption methods, and different variables that impact biosorption ability. Biosorption, as a technique with potential to compete with standard industrial techniques, has also been examined critically.
Key words: Biosorption, Heavy metals, Environment, Lead, Cadmium, Chromium
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