引用本文:
傅锦坤, 刘月英, 古萍英, 汤丁亮, 林种玉, 姚炳新, 翁绳周. 乳酸杆菌A09吸附还原Ag(I)的谱学表征[J]. 物理化学学报,
2000, 16(09): 779-782.
doi:
10.3866/PKU.WHXB20000904
Citation: Fu Jin-Zhou, Liu Yue-Ying, Gu Ping-Ying, Shang Ding-Liang, Lin Zhong-Yu, Yao Bing-Xin, Weng Sheng-Zhou. Spectroscopic Charcterization on the Biosorption and Bioreduction of Ag(I) by Lactobacillus sp.A09*[J]. Acta Physico-Chimica Sinica, 2000, 16(09): 779-782. doi: 10.3866/PKU.WHXB20000904
Citation: Fu Jin-Zhou, Liu Yue-Ying, Gu Ping-Ying, Shang Ding-Liang, Lin Zhong-Yu, Yao Bing-Xin, Weng Sheng-Zhou. Spectroscopic Charcterization on the Biosorption and Bioreduction of Ag(I) by Lactobacillus sp.A09*[J]. Acta Physico-Chimica Sinica, 2000, 16(09): 779-782. doi: 10.3866/PKU.WHXB20000904
English
Spectroscopic Charcterization on the Biosorption and Bioreduction of Ag(I) by Lactobacillus sp.A09*
Abstract:
Some characteristics of Ag＋ biosorption and bioreduction by Lactobacillus sp. A09 biomass were reported. The optimum pH value of Ag＋ biosorption by strain A09 was 4.5. Temperature(6～ 50 ℃) did not affect the biosorption. The biosorptive efficiency (91％) and biosorptive capacity(Ag＋ 125 mg• g－ 1 dry weight biomass ) were achieved under the conditions of Ag＋ 100 mg• L－ 1, biomass 800 mg• L－ 1, pH 4.5 and 30 ℃ for 24 h contact. TEM analysis indicated that A09 biomass could reduce Ag＋ to Ag0 as Ag particles on the surface of cells. IR spectroscopy showed that － CO2－ and － HN－ C=O on the surface of cells may involve in the precession for adsorbing Ag＋ .
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Key words:
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Lactobcillus
- / Silver
- / Biosorption
- / Bioreduction
- / Characterization
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