Biosorption of strontium ions from aqueous solution using modified eggshell materials.

What is it about?

Green composites emphasize renewable starting materials for better economy using biomass materials. Therefore, low-cost composite biosorbent was prepared by modification of eggshell material for removal of strontium ions from aqueous solution. Radiostrontium has long half-life (Sr-90 has a half-life of 28 years) and is characterized by high solubility and bioavailability, there is a similarity between strontium and calcium ions; they have very comparable biogeochemical behaviors, including the ability of Sr2+ to substitute for Ca2+ in bone given the bone cancer. Therefore, the elimination of strontium ions is quite necessary.

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Why is it important?

Green composites emphasize renewable starting materials for better economy using biological materials. Development of cost effective alternative technologies, such as the use of biological reagents for desired chemical processes has become an intensive area of exploitation over the past decade. Use of eggshell materials has been dominant among the alternative procedures because of the fact that it is cheap and readily available. It is also an environmental and waste control measure. The aim of this work is not only cost effective but also environmentally friendly; in the present work, modification of eggshell material was carried out to get composite biosorbent using heteropoly acid. Heteropoly acids are active for new types of catalysts, antivirus and anti-tumor agents, inorganic ion exchangers and analytical reagents. The sorption sensitivity of the modified eggshell was tested using a low concentration of strontium ions. Radiostrontium has long half-life (90Sr has a half-life of 28 years) and is characterized by high solubility and bioavailability, there is a similarity between strontium and calcium ions; they have very comparable biogeochemical behaviors, including the ability of Sr2+ to substitute for Ca2+ in bone given the bone cancer. Therefore, the elimination of strontium ions is quite necessary.

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