期刊
BIOREMEDIATION JOURNAL
卷 14, 期 2, 页码 92-97出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10889861003767050
关键词
absorption; As(III); ESCA; FTIR; Lactobacillus acidophilus
资金
- C.S.I.R., New Delhi
Lactobacillus acidophilus was used for the removal of As(III) from 50-2000 ppb As(III)-containing water solution. Biosorption of As(III) by L. acidophilus was dependent on concentration (50 to 2000 ppb) and time (0 to 3 h).L. acidophilus(1 mg dry wt/ml) was able to remove 30, 60, 300, 420, 600 ppb As(III) from 50, 100, 500, 1000, and 2000 ppb of As(III)-containing water solution, respectively, within 3 h at pH 7. Moreover, by increasing the biomass of L. acidophilus(2 mg dry wt/ml) removal of As(III) was enhanced 1.66, 1.33, 1.16, 1.42, and 1.33 times, respectively. Fourier transform infrared (FTIR) and electron spectroscopy for chemical analysis (ESCA) spectrum of As(III)-loaded biomass was also investigated. An FTIR sample spectrum of L. acidophilus fresh biomass and As(III)-loaded biomass showed band stretching of fresh and As(III)-loaded biomass for O-H, 3423.43 to 3385.04 cm-1, and for C-O, 1742.82 to 1731.14 cm-1, and signified that -OH and -CO groups were also involved in the removal of As(III) from As(III)-containing water solution.
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