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细菌吸附Pd2+的研究
STUDIES ON BIOSORPTION OF Pd2+ BY BACTERIA

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细菌吸附Pd_2_的研究.pdf (184.2Kb)
Date
2000-10
Author
刘月英
傅锦坤
李仁忠
张秀丽
胡志钰
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  • 化学化工-已发表论文 [14235]
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Abstract
[中文文摘]从不同来源的细菌菌株中筛选获得一株吸附Pd2 +能力较强的菌株R0 8,经鉴定为地衣芽孢杆菌 (Bacilluslicheniformis)R0 8。R0 8死菌体吸附Pd2 +的最适 pH值为 3 5,其吸附作用是一种快速而非依赖温度的过程。吸附作用受菌体浓度和Pd2 +浓度影响。在起始Pd2 +浓度 2 0 0mg/L、菌浓度 0 4g/L、pH3 5和 30℃条件下 ,吸附 45min ,吸附量为2 2 4 8mg/ g。透射电镜观察显示 ,R0 8死菌体能够还原Pd2 +成Pd0 颗粒。红外光谱分析表明 ,细胞壁上的 COO- 和HPO42 - 基团可能与Pd2 +的生物吸附有关。[英文文摘]The st rain R08, showed relat ively st rong abilit y of adsorbing Pd2+ , was screened from different source of bacterial st rains. T he strain R08 was ident ified as Bacillus lichenif ormis. T he optimum pH value of Pd2+ biosorpt ion by R08 dead biomass is 3. 5. T he biosorption is a rapid and non-temperature dependent process. T he biomass and Pd2+ init ial concentration in solution affected the biosorption process. T he bosorptive capacity could reach 224. 8 mg/ g under the condit ions of Pd2+ 200 mg/ L, 0. 4g biomass/ L , pH3. 5 and 30 e for 45min. TEM observation showed that R08 biomass is able to adsorb and reduce Pd2+ ions to Pd0 particles. IR spect rum analysis indicat ed that COO- and HPO2-4 groups on the cell walls may involve in process of adsorbing Pd2+ .
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作者简介: 刘月英( 1942- ) , 女, 福建省云霄县人, 厦门大学生物系副教授, 主要从事微生物生理生化研究国家自然科学基金资助项目!( 2 974 3 0 0 1和 2 98760 2 6)&&
Citation
微生物学报,40(5):535-539
URI
https://dspace.xmu.edu.cn/handle/2288/14510

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