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Effects of electron acceptors on soluble reactive phosphorus in the overlying water during algal decomposition.
Environ Sci Pollut Res Int. 2015 Dec; 22(24):19507-17.ES

Abstract

Endogenous phosphorus (P) release from sediments is an important factor to cause eutrophication and, hence, algal bloom in lakes in China. Algal decomposition depletes dissolved oxygen (DO) and causes anaerobic conditions and therefore increases P release from sediments. As sediment P release is dependent on the iron (Fe) cycle, electron acceptors (e.g., NO3 (-), SO4 (2-), and Mn(4+)) can be utilized to suppress the reduction of Fe(3+) under anaerobic conditions and, as such, have the potential to impair the release of sediment P. Here, we used a laboratory experiment to test the effects of FeCl3, MnO2, and KNO3 on soluble reactive phosphorus (SRP) concentration and related chemical variables in the overlying water column during algal decomposition at different algal densities. Results showed that algal decomposition significantly depleted DO and thereby increased sediment Fe-bound P release. Compared with the control, addition of FeCl3 significantly decreased water SRP concentration through inhibiting sediment P release. Compared with FeCl3, addition of MnO2 has less potential to suppress sediment P release during algal decomposition. Algal decomposition has the potential for NO3 (-) removal from aquatic ecosystem through denitrification and by that alleviates the suppressing role of NO3 (-) on sediment P release. Our results indicated that FeCl3 and MnO2 could be efficient in reducing sediment P release during algal decomposition, with the strongest effect found for FeCl3; large amounts of NO3 (-) were removed from the aquatic ecosystem through denitrification during algal decomposition. Moreover, the amounts of NO3 (-) removal increased with increasing algal density.

Authors+Show Affiliations

State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. jiangxia@craes.org.cn.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. zhengbh@craes.org.cn.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, S 90183, Umeå, Sweden.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26263882

Citation

Wang, Jinzhi, et al. "Effects of Electron Acceptors On Soluble Reactive Phosphorus in the Overlying Water During Algal Decomposition." Environmental Science and Pollution Research International, vol. 22, no. 24, 2015, pp. 19507-17.
Wang J, Jiang X, Zheng B, et al. Effects of electron acceptors on soluble reactive phosphorus in the overlying water during algal decomposition. Environ Sci Pollut Res Int. 2015;22(24):19507-17.
Wang, J., Jiang, X., Zheng, B., Niu, Y., Wang, K., Wang, W., & Kardol, P. (2015). Effects of electron acceptors on soluble reactive phosphorus in the overlying water during algal decomposition. Environmental Science and Pollution Research International, 22(24), 19507-17. https://doi.org/10.1007/s11356-015-5057-7
Wang J, et al. Effects of Electron Acceptors On Soluble Reactive Phosphorus in the Overlying Water During Algal Decomposition. Environ Sci Pollut Res Int. 2015;22(24):19507-17. PubMed PMID: 26263882.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of electron acceptors on soluble reactive phosphorus in the overlying water during algal decomposition. AU - Wang,Jinzhi, AU - Jiang,Xia, AU - Zheng,Binghui, AU - Niu,Yuan, AU - Wang,Kun, AU - Wang,Wenwen, AU - Kardol,Paul, Y1 - 2015/08/13/ PY - 2015/04/15/received PY - 2015/07/07/accepted PY - 2015/8/13/entrez PY - 2015/8/13/pubmed PY - 2016/8/4/medline KW - Algal bloom KW - Electron acceptor KW - Internal loading KW - Phosphorus KW - Taihu Lake SP - 19507 EP - 17 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 22 IS - 24 N2 - Endogenous phosphorus (P) release from sediments is an important factor to cause eutrophication and, hence, algal bloom in lakes in China. Algal decomposition depletes dissolved oxygen (DO) and causes anaerobic conditions and therefore increases P release from sediments. As sediment P release is dependent on the iron (Fe) cycle, electron acceptors (e.g., NO3 (-), SO4 (2-), and Mn(4+)) can be utilized to suppress the reduction of Fe(3+) under anaerobic conditions and, as such, have the potential to impair the release of sediment P. Here, we used a laboratory experiment to test the effects of FeCl3, MnO2, and KNO3 on soluble reactive phosphorus (SRP) concentration and related chemical variables in the overlying water column during algal decomposition at different algal densities. Results showed that algal decomposition significantly depleted DO and thereby increased sediment Fe-bound P release. Compared with the control, addition of FeCl3 significantly decreased water SRP concentration through inhibiting sediment P release. Compared with FeCl3, addition of MnO2 has less potential to suppress sediment P release during algal decomposition. Algal decomposition has the potential for NO3 (-) removal from aquatic ecosystem through denitrification and by that alleviates the suppressing role of NO3 (-) on sediment P release. Our results indicated that FeCl3 and MnO2 could be efficient in reducing sediment P release during algal decomposition, with the strongest effect found for FeCl3; large amounts of NO3 (-) were removed from the aquatic ecosystem through denitrification during algal decomposition. Moreover, the amounts of NO3 (-) removal increased with increasing algal density. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26263882/Effects_of_electron_acceptors_on_soluble_reactive_phosphorus_in_the_overlying_water_during_algal_decomposition_ L2 - https://dx.doi.org/10.1007/s11356-015-5057-7 DB - PRIME DP - Unbound Medicine ER -