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Volume 16 Issue 1
Mar.  2025
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ZHANG ZhiYu, XIE ZhenYu, HUANG AiYou, ZHANG BaoXuan. Purification efficiency of three submerged plants in simulated aquaculture effluent[J]. Journal of Tropical Biology, 2025, 16(1): 134-151. doi: 10.15886/j.cnki.rdswxb.20240042
Citation: ZHANG ZhiYu, XIE ZhenYu, HUANG AiYou, ZHANG BaoXuan. Purification efficiency of three submerged plants in simulated aquaculture effluent[J]. Journal of Tropical Biology, 2025, 16(1): 134-151. doi: 10.15886/j.cnki.rdswxb.20240042

Purification efficiency of three submerged plants in simulated aquaculture effluent

doi: 10.15886/j.cnki.rdswxb.20240042
  • Received Date: 2024-03-12
  • Rev Recd Date: 2024-06-05
  • Publish Date: 2025-03-15
  • Three common submerged plants, Hydrilla verticillata, Elodea nuttallii and Ceratophyllum demersum,collected in Hainan Province were cultured in aquaculture effluent prepared to explore their effects under different factors such as temperature, illumination intensity and plant density on the purification efficiency of simulated tilapia aquaculture effluent in an indoor static water culture experiment. The submerged plants with the best purification efficiency for the effluent treatment were screened. The results showed C. demersum had best comprehensive removal efficiency, with removal rates of NH4+-N, PO43--P, NO2--N and NO3--N being upto 67.11%,78.92%, 96.89% and 75.04%, respectively. H. verticillata and E. nuttallii had best purification efficiency at the plant density of 6.4 g·L-1, while the comprehensive purification efficiency of C. demersum at the plant densities of 6.4 and 4.4 g·L-1 were similar. E. nuttallii and C. demersum reduced the removal rates of NH4+-N by 26.54% and 62.36%, respectively, at the illumination intensity of 6 000 lx as against those at 18 000 lx, and. meanwhile H.verticillata completely lost the water purification ability, indicating that high light intensity might inhibit the growth of plants and reduce the efficiency of water purification.
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Purification efficiency of three submerged plants in simulated aquaculture effluent

doi: 10.15886/j.cnki.rdswxb.20240042

Abstract: Three common submerged plants, Hydrilla verticillata, Elodea nuttallii and Ceratophyllum demersum,collected in Hainan Province were cultured in aquaculture effluent prepared to explore their effects under different factors such as temperature, illumination intensity and plant density on the purification efficiency of simulated tilapia aquaculture effluent in an indoor static water culture experiment. The submerged plants with the best purification efficiency for the effluent treatment were screened. The results showed C. demersum had best comprehensive removal efficiency, with removal rates of NH4+-N, PO43--P, NO2--N and NO3--N being upto 67.11%,78.92%, 96.89% and 75.04%, respectively. H. verticillata and E. nuttallii had best purification efficiency at the plant density of 6.4 g·L-1, while the comprehensive purification efficiency of C. demersum at the plant densities of 6.4 and 4.4 g·L-1 were similar. E. nuttallii and C. demersum reduced the removal rates of NH4+-N by 26.54% and 62.36%, respectively, at the illumination intensity of 6 000 lx as against those at 18 000 lx, and. meanwhile H.verticillata completely lost the water purification ability, indicating that high light intensity might inhibit the growth of plants and reduce the efficiency of water purification.

ZHANG ZhiYu, XIE ZhenYu, HUANG AiYou, ZHANG BaoXuan. Purification efficiency of three submerged plants in simulated aquaculture effluent[J]. Journal of Tropical Biology, 2025, 16(1): 134-151. doi: 10.15886/j.cnki.rdswxb.20240042
Citation: ZHANG ZhiYu, XIE ZhenYu, HUANG AiYou, ZHANG BaoXuan. Purification efficiency of three submerged plants in simulated aquaculture effluent[J]. Journal of Tropical Biology, 2025, 16(1): 134-151. doi: 10.15886/j.cnki.rdswxb.20240042
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