| Literature DB >> 24787320 |
Yonggui Zhao1, Yang Fang2, Yanling Jin3, Jun Huang4, Shu Bao5, Tian Fu6, Zhiming He7, Feng Wang8, Hai Zhao9.
Abstract
The application potential of duckweed (Lemna japonica 0234) and water hyacinth (Eichhornia crassipes) were compared in two pilot-scale wastewater treatment systems for more than one year. The results indicated duckweed had the same total nitrogen (TN) recovery rate as water hyacinth (0.4 g/m(2)/d) and a slightly lower total phosphorus (TP) recovery rate (approximately 0.1g/m(2)/d) even though its biomass production was half that of water hyacinth. The higher content of crude protein (33.34%), amino acids (25.80%), starch (40.19%), phosphorus (1.24%), flavonoids (2.91%) and lower fiber content provided duckweed with more advantages in resource utilization. Additionally, microbial community discovered by 454 pyrosequencing indicated that less nitrifying bacteria and more nitrogen-fixing bacteria in rhizosphere of duckweed provided it with higher nitrogen recovery efficiency (60%) than water hyacinth (47%). Under the presented condition, duckweed has more application advantages than water hyacinth because it more effectively converted the wastewater nutrients into valuable biomass.Entities:
Keywords: Duckweed; Rhizosphere microbial community; Valuable biomass; Wastewater nutrients; Water hyacinth
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Year: 2014 PMID： 24787320 DOI： 10.1016/j.biortech.2014.04.018
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642