期刊
ENVIRONMENTAL TECHNOLOGY
卷 43, 期 2, 页码 163-170出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2020.1782479
关键词
Photosynthetic bacteria; lactic acid wastewater; NH4+-N removal; protein; pigment
资金
- Key Research and Development Plan of Shandong Province [2017CXGC1005]
Photosynthetic bacteria (PSB) were used for wastewater treatment and simultaneous production of valuable biomass. The study showed that PSB could effectively remove pollutants and produce protein, carotenoid, and bacteriochlorophyll. The results demonstrated high removal rates of COD and NH4+-N, as well as high concentrations of protein, carotenoid, and bacteriochlorophyll in the treated wastewater.
Photosynthetic bacteria (PSB) can be used in wastewater treatment to simultaneously remove pollutants and produce valuable biomass. In this study, PSB were used to treat lactic acid wastewater and produce high-value substances (protein, carotenoid and bacteriochlorophyll). The results showed that the PSB biomass increase, COD and NH4+-N removal reached 55%, 89% and 94% in 5 days, respectively. The protein content, carotenoid and bacteriochlorophyll concentrations reached 69.1%, 2.3 and 0.8 mg/L, respectively. Furthermore, kinetic analysis showed that both NH4+-N removal and protein content fitted the Boltzmann equation, and the NH4+-N removal was positively related with the content of protein and concentration of pigments. This novel wastewater treatment method can adapt to the changes of light-oxygen condition, F/M and pH conditions.
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