Tags

Type your tag names separated by a space and hit enter

Dynamics of phosphorus-iron-sulfur at the sediment-water interface influenced by algae blooms decomposition.
J Hazard Mater. 2015 Dec 30; 300:329-337.JH

Abstract

This study addresses the previously unknown effects of algae blooms on the dynamics of phosphorus (P), iron (Fe) and sulfur (S) across a lacustrine sediment-water interface (SWI). A mesocosm experiment was conducted in-situ to investigate these effects based on two recently-developed diffusive gradients in thin-films techniques (DGT). Soluble P, Fe(II), and S(-II) exhibited similar changing trends in a water column subject to the algae addition. Peak concentrations appeared on day 7 of the 16-day experiment. The lowest Eh occurred at the experiment's midway point indicating a strong algae degradation. A maximum increase in DGT-labile S appeared on day 8 near the SWI, while the DGT-labile P and Fe exhibited persistent increases almost to the end of experiment. Significantly positive correlations of labile P were observed switching from between labile Fe and labile S in sediments, suggesting a significant change in original Fe-coupled dynamics of P under algae decomposition. Apparent fluxes were calculated based on DGT profiles where a simultaneous release of P and S occurred from degraded algae, resulting in bidirectional diffusion fluxes from sediment to overlying water. In contrast, sediment acted as a major source of labile Fe due to added depth and apparently positive fluxes.

Authors+Show Affiliations

State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China. Electronic address: smding@niglas.ac.cn.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.School of Civil Engineering, Southeast University, Nanjing 210096, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.

Pub Type(s)

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

Language

eng

PubMed ID

26207579

Citation

Han, Chao, et al. "Dynamics of Phosphorus-iron-sulfur at the Sediment-water Interface Influenced By Algae Blooms Decomposition." Journal of Hazardous Materials, vol. 300, 2015, pp. 329-337.
Han C, Ding S, Yao L, et al. Dynamics of phosphorus-iron-sulfur at the sediment-water interface influenced by algae blooms decomposition. J Hazard Mater. 2015;300:329-337.
Han, C., Ding, S., Yao, L., Shen, Q., Zhu, C., Wang, Y., & Xu, D. (2015). Dynamics of phosphorus-iron-sulfur at the sediment-water interface influenced by algae blooms decomposition. Journal of Hazardous Materials, 300, 329-337. https://doi.org/10.1016/j.jhazmat.2015.07.009
Han C, et al. Dynamics of Phosphorus-iron-sulfur at the Sediment-water Interface Influenced By Algae Blooms Decomposition. J Hazard Mater. 2015 Dec 30;300:329-337. PubMed PMID: 26207579.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dynamics of phosphorus-iron-sulfur at the sediment-water interface influenced by algae blooms decomposition. AU - Han,Chao, AU - Ding,Shiming, AU - Yao,Lei, AU - Shen,Qiushi, AU - Zhu,Chungang, AU - Wang,Yan, AU - Xu,Di, Y1 - 2015/07/07/ PY - 2015/01/08/received PY - 2015/06/03/revised PY - 2015/07/05/accepted PY - 2015/7/25/entrez PY - 2015/7/25/pubmed PY - 2016/9/7/medline KW - Algae decomposition KW - Diffusive gradients in thin-films (DGT) KW - Lake taihu KW - Phosphorus–iron–sulfur (P–Fe–S) KW - Sediment–water interface (SWI) SP - 329 EP - 337 JF - Journal of hazardous materials JO - J Hazard Mater VL - 300 N2 - This study addresses the previously unknown effects of algae blooms on the dynamics of phosphorus (P), iron (Fe) and sulfur (S) across a lacustrine sediment-water interface (SWI). A mesocosm experiment was conducted in-situ to investigate these effects based on two recently-developed diffusive gradients in thin-films techniques (DGT). Soluble P, Fe(II), and S(-II) exhibited similar changing trends in a water column subject to the algae addition. Peak concentrations appeared on day 7 of the 16-day experiment. The lowest Eh occurred at the experiment's midway point indicating a strong algae degradation. A maximum increase in DGT-labile S appeared on day 8 near the SWI, while the DGT-labile P and Fe exhibited persistent increases almost to the end of experiment. Significantly positive correlations of labile P were observed switching from between labile Fe and labile S in sediments, suggesting a significant change in original Fe-coupled dynamics of P under algae decomposition. Apparent fluxes were calculated based on DGT profiles where a simultaneous release of P and S occurred from degraded algae, resulting in bidirectional diffusion fluxes from sediment to overlying water. In contrast, sediment acted as a major source of labile Fe due to added depth and apparently positive fluxes. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/26207579/Dynamics_of_phosphorus_iron_sulfur_at_the_sediment_water_interface_influenced_by_algae_blooms_decomposition_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(15)00538-5 DB - PRIME DP - Unbound Medicine ER -