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| Effects of light qualities, ammonia nitrogen, and copper on growth of Scenedesmus obliquus to treat swine wastewater |
| Received:February 05, 2018 |
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| KeyWord:Scenedesmus obliquus;light qualities;ammonia nitrogen;copper;swine wastewater |
| Author Name | Affiliation | E-mail | | QIN Yu-feng | School of Life Science, Jiangxi Normal University, Nanchang 330027, China | | | CHEN Fang-bo | School of Marine Sciences, Ningbo University, Ningbo 315211, China | | | ZHANG Gui-lin | Bureau of Agriculture, Lianxi District, Jiujiang City, Jiangxi Province, Jiujiang 332005, China | | | CHENG Peng-fei | School of Chemical and Environmental Engineering, Jiujiang University, Jiujiang 332005, China
School of Marine Sciences, Ningbo University, Ningbo 315211, China | pfcheng1792@163.com | | XIAO Peng | School of Marine Sciences, Ningbo University, Ningbo 315211, China | | | LI Shou-chun | School of Life Science, Jiangxi Normal University, Nanchang 330027, China | |
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| Abstract: |
| In this study, a strain of Scendesmus dimorphus with strong anti-fouling property was selected to investigate the effects of light qualities on the growth of Scendesmus dimorphus to treat swine wastewater. The growth of the algae based on standard concentrations of ammonia nitrogen and copper in swine wastewater was studied. The results showed that the growth of algal biomass in white light was better than that in blue and red light, with biomass productivity of 0.21, 0.04 g·L-1·d-1, and 0.03 g·L-1·d-1, respectively. The growth of the algae at low ammonia nitrogen concentration of 50 mg·L-1 was similar to that of the control, with biomass productivity of 0.20 g·L-1·d-1 and 0.18 g·L-1·d-1, respectively. However, the growth of the algae was influenced by high concentrations of ammonia nitrogen(500 mg·L-1 and 2000 mg·L-1) with biomass productivity of 0.12 g·L-1·d-1 and 0.11 g·L-1·d-1, respectively. In addition, the growth of Scendesmus dimorphus was influenced by copper, with biomass productivity of 0.18, 0.15 g·L-1·d-1, and 0.13 g·L-1·d-1 at copper concentrations of 0.5, 1.0 mg·L-1, and 2.0 mg·L-1, respectively. The algal cell can be resistant to high concentrations of copper when ammonia nitrogen co-exists in the medium. |
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