Biosorption of cesium-137 and strontium-90 by mucilaginous seeds of Ocimum basilicum

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• 作者：Dipjyoti Chakraborty ; Samir Maji ; Abhijit B ; yopadhyay ; Sukalyan Basu
• 关键词：Ocimum basilicum ; Bioremediation ; ¹³⁷Cesium ; ⁹⁰Strontium
• 刊名：Bioresource Technology
• 出版年：2007
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：November 2007
• 卷：98
• 期：15
• 页码：2949-2952
• 文件大小：303 K

摘要

Mucilaginous seeds of Ocimum basilicum were used in uptake studies with cesium-137 and strontium-90. Results showed that uptake was dependent on the structural integrity of the mucilage fibrils. Water imbibed seeds showed higher adsorption of both ¹³⁷Cs and ⁹⁰Sr in comparison to seeds pretreated with NaOH, HCl and Na-periodate solution. The uptake was pH dependent and while some divalent metal ions had no or little detrimental effect, the alkali metal ions Li⁺, Na⁺ and K⁺ decreased the uptake. The maximum adsorption capacity was 160 mg cesium g⁻¹ and 247 mg strontium g⁻¹ seed dry weight.