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- W2893929108 abstract "A novel bioflocculant, A-GS408, produced by Klebsiella oxytoca GS-4-08 cultured in acetonitrile (ACN) as sole nitrogen source was investigated in this study. A complete degradation of 1 g l-1 of ACN was achieved in 350 h, and 4.6 g of crude A-GS408 can be obtained in one litter of synthetic medium. The as-prepared bioflocculant exhibits good flocculation efficiency (over 90%) toward Kaolin solution with the aid of Fe3+. Chemical analysis showed that the bioflocculant was mainly composed of polysaccharides (46.3%) and proteins (20.6%). FTIR and XPS results indicated the abundant carboxyl, amine and hydroxyl groups in A-GS408 s, which play an important role on Pd2+ and Cu2+ adsorption. The adsorption of heavy metals can be well stimulated by Freundlich isotherm equation, and the Kf was up to 439.2 mg1-1/n l1/n g-1 and 112.2 mg1-1/n l1/n g-1 for Pb2+ and Cu2+, respectively. The kinetic fitting results proved that the adsorption of heavy metals by A-GS408 was chemisorption. This study may provide a new method for preparation of bioflocculant, which can not only degrade toxic compound i.e., acetonitrile, but also can reuse considerable nitrogen source from nitrile-containing wastewater." @default.
- W2893929108 created "2018-10-05" @default.
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- W2893929108 date "2019-02-01" @default.
- W2893929108 modified "2023-10-17" @default.
- W2893929108 title "Preparation of a bioflocculant by using acetonitrile as sole nitrogen source and its application in heavy metals removal" @default.
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- W2893929108 doi "https://doi.org/10.1016/j.jhazmat.2018.09.063" @default.
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