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| Utilizing algae for agricultural non-point source pollution control: A review |
| Received:July 04, 2018 |
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| KeyWord:agricultural non-point source pollution;algae;nitrogen fixation and phosphorus reduction;ecological ditch;biofertilizer;nutrient recovery/reusing |
| Author Name | Affiliation | E-mail | | LI Sheng-nan | Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China
Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Ministry of Agriculture, Changsha 410125, China | | | JI Xiong-hui | Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China
Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Ministry of Agriculture, Changsha 410125, China | | | ZHU Jian | Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China
Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Ministry of Agriculture, Changsha 410125, China | | | LI Chang-jun | Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China
Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Ministry of Agriculture, Changsha 410125, China | | | JIAN Yan | Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China
Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Ministry of Agriculture, Changsha 410125, China | | | PENG Hua | Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China
Key Laboratory of Agro-Environment in Midstream of Yangtze Plain, Ministry of Agriculture, Changsha 410125, China
Central South University, Changsha 410083, China | phlove10@163.com |
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| Abstract: |
| According to the first national census bulletin of China in 2010, agricultural non-point source pollution has been the primary contributors of total nitrogen (TN) and total phosphorus (TP) to surface waters. Algae are widely distributed in all kinds of aquatic ecosystems, including the paddy fields. Large-scale biomass production of algae, which can be reused to produce bio-fuel, bio-fertilizers and soil amendments, requires plenty of N and P nutrients. While the algae can permanently remove these nutrients from agricultural waste waters, they also provide a way for nutrient recovery through the use of algal products. Based on the characteristics of algae growth, the present study explored the ecological modes using algae to control agricultural non-point source pollution, including algae inoculation in paddy fields, integrated multi-trophic aquaculture, periphytic algae-based ecological diches and high rate algal ponds. The potentials and limitations of each technology were further discussed. |
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