Removal of eutrophication factors and heavy metal from a closed cultivation system using the macroalgae, Gracilaria sp. (Rhodophyta)

Kyoung Ho Kang; Zhenghong Sui

doi:10.1007/s00343-010-9902-8

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Removal of eutrophication factors and heavy metal from a closed cultivation system using the macroalgae, Gracilaria sp. (Rhodophyta)

Updated：2023-05-16

- Removal of eutrophication factors and heavy metal from a closed cultivation system using the macroalgae, Gracilaria sp. (Rhodophyta)
- Journal of Oceanology and Limnology Vol. 28, Issue 6, Pages: 1127-1130(2010)
- Affiliations：
  
  1. Department of Aquaculture Chonnam National University
  2. Key Laboratory of Marine Genetics and Breeding Ministry of Education Ocean University of China
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-9902-8
  CLC：
- Online First：10 November 2010，
  
  Published：2010
- Accepted：
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Kang, K.H., Sui, Z. Removal of eutrophication factors and heavy metal from a closed cultivation system using the macroalgae, Gracilaria sp. (Rhodophyta)., Chin. J. Ocean. Limnol. 28, 1127–1130 (2010). https://doi.org/10.1007/s00343-010-9902-8
DOI：

Kang, K.H., Sui, Z. Removal of eutrophication factors and heavy metal from a closed cultivation system using the macroalgae, Gracilaria sp. (Rhodophyta)., Chin. J. Ocean. Limnol. 28, 1127–1130 (2010). https://doi.org/10.1007/s00343-010-9902-8 DOI：

摘要

Abstract

In this study

the ability of macroalgae Gracilaria sp. of removing eutrophication factors and toxic heavy metals Al

and Zn in a closed cultivation system is reported. The results show that the concentration of the three heavy metals decreased significantly during the experimental period in an algal biomass dependent manner. The biofiltration capacity of the alga for Al

and Zn is 10.1%–72.6%

52.5%–83.4% and 36.5%–91.7%

respectively. Using more materials resulted in stronger heavy metal removal. Additionally

the concentration of chl-a

TP and DIN of water samples from aquariums involving large

medium

and small algal biomass cultivation increased first and then decreased during the experiment. COD value of all three groups decreased with time and displayed algal biomass dependency: more algae resulting in a greater COD value than those of less biomass. Furthermore

changes in COD reflect an obvious organic particles deprivation process of algae. This is the first report on heavy metal removal effect by Gracilaria species. The results suggest that macroalgae can be used as a biofilter for the treatment of nutrient-enriched or heavy-metal polluted water

to which an appropriate time range should be carefully determined.

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references

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