NDLI: Data from: Seasonal characteristics of phosphorus sorption by sediments from plain lakes with different trophic statuses (Dataset)

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Data from: Seasonal characteristics of phosphorus sorption by sediments from plain lakes with different trophic statuses (Dataset)

Content Provider	Dryad
Author	Huang, Wei Chen, Xing Wang, Kun Jiang, Xia
Abstract	Phosphorus (P) sorption in sediments plays a significant role in trophic status of a lake. This study investigated the characteristics of P sorption in sediments from three lakes with different trophic statuses (moderately eutrophic, lightly eutrophic, and moderately trophic) through kinetic, batch equilibrium, and thermodynamic experiments. Results show that pseudo-second-order kinetics best describe P sorption in sediments from the three lakes. Fitting by modified Langmuir and Freundlich isotherms indicate that the moderately trophic lake sediments has higher sorption capacity (maximum of 0.848 mg g-1 at 35 °C) than the sediments of the other two lakes at different temperatures (5, 15, 25, and 35 °C). Thermodynamic results indicate that the process of P sorption of the three sediments are spontaneous, entropy-driven, and endothermic reactions. The risk of P release in sediments was analyzed according to the calculated results of isotherms combined with the change in P fraction. Sediments from the moderately eutrophic lake act as a source in summer. The lightly eutrophic and moderately trophic lakes act as sources in spring and winter, and a pool in summer and autumn, respectively. Furthermore, the amounts of reductant-soluble P (RS-P), calcium bound P (Ca-P), and iron bound P (Fe-P) are significantly related to the sorption capacity of sediments from the three lakes (p<0.05). The different sediments have the different P release risk, and P fraction in sediment is one of the significant factors of P sorption.
File Size	275555
File Format	HTM / HTML
ISSN	20545703
DOI	10.5061/dryad.kt14vq3
Alternate Webpage(s)	https://datadryad.org/stash/downloads/file_stream/32606
Language	English
Publisher Date	2018-07-23
Access Restriction	Open
Subject Keyword	Sorption Sediment Phosphorus Trophic Status
Content Type	Text
Resource Type	Data Set
Subject	Multidisciplinary

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