Green-Ruiz Carlos, Rodriguez-Tirado Victor, Gomez-Gil Bruno
Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Av. Joel Montes Camarena s/n, Col. Centro, 82000 Mazatlán, Sin., Mexico. mailto:
Bioresour Technol. 2008 Jun;99(9):3864-70. doi: 10.1016/j.biortech.2007.06.047. Epub 2007 Aug 13.
Effects of pH, salinity and temperature on biosorption of Cd and Zn by bacteria Bacillus jeotgali strain U3 were evaluated in batch experiments. Traditional and Subsequent Addition Methods (SAM) were used to carry out the bioassays. Sorption of metals was higher when pH or temperature was increased, or when salinity was reduced. The Langmuir isotherm better fit the biosorption data for Cd, while the Freundlich model fitted better for Zn biosorption. A comparison with similar biosorbents suggested that Bacillus jeotgali strain U3 could be considered a good biosorbent for Cd and Zn recovery.
通过批次实验评估了pH值、盐度和温度对嗜盐芽孢杆菌U3菌株对镉和锌生物吸附的影响。采用传统方法和后续添加法（SAM）进行生物测定。当pH值升高、温度升高或盐度降低时，金属的吸附量更高。Langmuir等温线更适合镉的生物吸附数据，而Freundlich模型更适合锌的生物吸附。与类似生物吸附剂的比较表明，嗜盐芽孢杆菌U3菌株可被视为回收镉和锌的良好生物吸附剂。
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