Bioflocculant BF-R1 production by Bacillus sp. R1 using wheat bran hydrolysate and its application in wastewater treatment

VIEWS - 233 (Abstract) 102 (PDF) 28 (Figure S1)
Rexiding Abuduaini, Naling Bai, Cai Hui, Sheng Wang, Hui Jiang, Yuhua Zhao

Abstract


Bioflocculants are commonly used in wastewater treatment. In this study, an efficient bioflocculant-producing strain, Bacillus sp. R1, was isolated and identified; strain R1 could efficiently produce bioflocculant BF-R1 with wheat bran hydrolysate. The characteristics and flocculation mechanisms of BF-R1 were determined and it was then applied for the granular carbon particles treatment in wastewater. Notably, 3.71 g of BF-R1 were produced when 200 mL/L wheat bran hydrolysate was used as the sole carbon and nitrogen source. BF-R1 contained polysaccharides, proteins, and glycoproteins and showed a good flocculating efficiency of 91.00% for granular carbon particles in contaminated wastewater when 3.50 g/L BF-R1 was added, thus achieving successful recycling of fine particle-contaminated wastewater. Taken together, our findings for the first time demonstrate that BF-R1 fermented using WBH can probably be a promising candidate agent for wastewater management processes.

Keywords


bioflocculant; Bacillus sp. R1; wheat bran hydrolysate; granular carbon particles ; flocculation efficiency

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References


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DOI: http://dx.doi.org/10.26789/AEB.2019.02.005

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Copyright (c) 2019 Rexiding Abuduaini, Naling Bai, Cai Hui, Sheng Wang, Hui Jiang, Yuhua Zhao

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