Influencing factors for nutrient removal from piggery digestate by coupling microalgae and electric field
文献类型： 外文期刊
作者： Luo, Longzao 1 ; Lin, Xiaoai 1 ; Li, Miao 1 ; Liao, Xing 1 ; Zhang, Bangxi 4 ; Hu, Yujie 1 ; Wang, Yufeng 3 ; Huang, Yan 3 ; Peng, Changsheng 2 ;
作者机构： 1.Shangrao Normal Univ, Sch Chem & Environm Sci, Shangrao, Peoples R China
2.Ocean Univ China, Key Lab Marine Environm Sci & Ecol, Minist Educ, Qingdao 266100, Peoples R China
3.Zhejiang Zone King Environm Sci & Technol Co Ltd, Hangzhou, Peoples R China
4.Guizhou Acad Agr Sci, Inst Agr Resources & Environm, Guiyang, Peoples R China
关键词： Microalgae; electric field; nutrient removal; electrode materials; light intensity
期刊名称：ENVIRONMENTAL TECHNOLOGY （ 影响因子：3.475； 五年影响因子：3.186 ）
ISSN： 0959-3330
年卷期：
页码：
收录情况： SCI
摘要： Microalgae show great potential for nutrient removal from piggery digestate. However, full-strength piggery digestate have been found to severely inhibit microalgal growth. In this study, microalgae were coupled into the electric field (EF)system to form an electric field-microalgae system (EFMS). The effects of EF characteristics and environmental conditions on the growth of Desmodesmus sp. CHX1 and the removal of nitrogen and phosphorus in EFMS were explored. The results indicated that the optimal EF parameters for forming a fine EFMS were electrode of Zn (anode)/graphite (cathode), electric frequency of three times per day (10 min/time) and voltage of 12 V. The suitable light intensity and microalgae inoculation concentration for the EFMS were 180 mu mol photons/(m(2)center dot s) and 0.2 g/L, respectively. Ammonium nitrogen and total phosphorus removal efficiencies were 65.38% and 96.16% in the piggery digestate by EFMS under optimal conditions. These results indicate that EFMS is a promising technology for nutrient removal from piggery digestate.
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