| Literature DB >> 29065328 |
Qi Zhou1, Yan Lin1, Xiang Li1, Chunping Yang2, Zhenfeng Han1, Guangming Zeng1, Li Lu3, Shanying He4.
Abstract
The effect of Zn2+ on ammonium and phosphorous removal and duckweed growth was evaluated for treatment of anaerobically digested swine wastewater (ADSW) at various initial Zn2+ concentrations ranging from 1.0 to 15mg/L. Lemna aequinoctialis taken from a local pond was selected for the treatment, and its fresh weight and contents of proteins, photosynthetic pigments, and vitamin E were examined. Results showed that the optimal Zn2+ concentration was 5.0mg/L for NH3-N and TP removal, the duckweed growth, and the accumulation of proteins in the duckweed. A maximum content of photosynthetic pigments increased with the increase of initial Zn2+ concentration, and it arrived earlier for a higher concentration of Zn2+. Vitamin E content in the duckweed reached 4.5mg/kg at 15mg/L Zn2+ in 12-day cultivation, which showed the potential for producing and harvesting a high value-added product of vitamin E by culturing duckweed in ADSW.Entities:
Keywords: Lemna aequinoctialis; Nutrient; Swine wastewater; Vitamin E; Zn(2+)
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Year: 2017 PMID： 29065328 DOI： 10.1016/j.biortech.2017.10.044
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642