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Improving the growth of Rubrivivax gelatinosus cultivated in sewage environment

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Abstract

Rubrivivax gelatinosus cultivated in wastewater environment can combine the biomass resource recycling for generating chemicals with sewage purification. However, low biomass accumulation restricts the exertion of this advantage. Thus, this paper investigated Fe3+ advancement for biomass production in starch wastewater under light–anaerobic condition. Results showed that addition of Fe3+ was successful in enhancing biomass production, which certainly improved the feasibility of biomass recycling in R. gelatinosus starch wastewater treatment. With optimal Fe3+ dosage (20 mg/L), biomass production reached 4,060 mg/L, which was 1.63 times that of control group. Amylase activity was improved by 48 %. Both COD removal and starch removal reached 90 %. Hydraulic retention time was shortened by 25 %. Proper Fe3+ dosage enhanced biomass production, but excess Fe3+ was harmful for biomass accumulation.

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Acknowledgments

The authors are grateful for the financial support from National Natural Science Foundation of China.

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Authors and Affiliations

  1. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China

    Pan Wu, Jian-zheng Li, Qing-yue Tong, Xian-shu Liu & Cong Du

  2. School of Environmental Science and Engineering, SunYat-Sen University, Guangzhou, 510275, China

    Pan Wu

  3. Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China

    Yan-ling Wang

  4. School of Qiaoxing Light Industry, Fuzhou University, Fuzhou, 350002, China

    Ning Li

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  1. Pan Wu
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  2. Jian-zheng Li
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  3. Yan-ling Wang
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  4. Qing-yue Tong
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  5. Xian-shu Liu
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  6. Cong Du
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Correspondence to Jian-zheng Li.

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Wu, P., Li, Jz., Wang, Yl. et al. Improving the growth of Rubrivivax gelatinosus cultivated in sewage environment. Bioprocess Biosyst Eng 38, 79–84 (2015). https://doi.org/10.1007/s00449-014-1245-y

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  • DOI: https://doi.org/10.1007/s00449-014-1245-y

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