Characteristics of phosphorus sorption at the sediment–water interface in Dongting Lake, a Yangtze-connected lake

Huang, Wei; Wang, Kun; Du, Hongwei; Wang, Ting; Wang, Shuhang; Yangmao, Zhuoma; Xia, Junqiang

doi:10.2166/nh.2016.206

Cited by 19 publications

(4 citation statements)

References 32 publications

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“…The largest amount of phosphates was adsorbed by sediments from the surface layer (5-10 cm) at Station 2, at 356.39 mg P kg −1 dw, while the weakest sediment sorptive abilities with respect to phosphorus were shown by sediment taken at St. 1, at 202.47 mg P kg −1 dw (Figures 2-4). These values are within the range recorded for the sediments of other Olsztyn lakes [44] or around the world [45][46][47][48][49][50]. The pH level during experiments was favorable for P adsorption processes onto sediment.…”

Section: Discussionsupporting

confidence: 82%

Sorption Properties of the Bottom Sediment of a Lake Restored by Phosphorus Inactivation Method 15 Years after the Termination of Lake Restoration Procedures

Augustyniak

Grochowska

Łopata

et al. 2019

Water

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Artificial mixing and phosphorus inactivation methods using aluminum compounds are among the most popular lake restoration methods. Długie Lake (Olsztyńskie Lakeland, Poland) was restored using these two methods. Primarily, P precipitation and inactivation methods significantly increased the sorption properties of Długie Lake bottom sediment. Fifteen years after the termination of the restoration procedure, the alum-modified “active” sediment layer still has higher P adsorption abilities, which can limit P internal loading. Relatively low amounts of phosphates in the near-bottom water of Długie Lake, even in anoxia, as well as the fact that the assessed maximum sediment P sorption capacity is still higher than NH4Cl–P (labile P) and BD–P (Fe-bound P) sum (“native exchangeable P”), confirm that hypothesis. Among the tested P adsorption models for the sediment, the double Langmuir model showed the best fit to the experimental data (the highest R2 values). This may indicate that phosphorus adsorption by the tested sediments most likely occurs through phosphate binding at two types of active sorption sites. P adsorption by the studied lake sediment during experiments was significantly connected to aluminum content in sediment. The research into the adsorption properties of sediment can be used as a tool for the evaluation of lake restoration effects.

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Section: Discussionsupporting

confidence: 82%

Sorption Properties of the Bottom Sediment of a Lake Restored by Phosphorus Inactivation Method 15 Years after the Termination of Lake Restoration Procedures

Augustyniak

Grochowska

Łopata

et al. 2019

Water

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“…As an internal source, P sorption in sediments may influence the P concentration in water, and the effect of P sorption on the trophic status of lakes should not be ignored. The sorption characteristics of P at the sediment–water interface are therefore significant to study [1,13]. …”

Section: Introductionmentioning

confidence: 99%

Seasonal characteristics of phosphorus sorption by sediments from plain lakes with different trophic statuses

et al. 2018

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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 indicates that the moderately trophic lake sediment 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 processes of P sorption of the three sediments are spontaneous, entropy-driven and endothermic reactions. The risk of P release in sediments was analysed 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, calcium-bound P and iron-bound P are significantly related to the sorption capacity of sediments from the three lakes (p < 0.05). The different sediments have different P release risk, and P fraction in sediment is one of the significant factors of P sorption.

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“…where C i (mg L −1 ) and C ef (mg L −1 ) are the pollutant concentrations of influent and effluent, respectively. Sorption kinetics were described by pseudo-first-and -secondorder models as follows (Huang et al, 2015;Huang et al, 2016):…”

Section: Discussionmentioning

confidence: 99%

“…Sorption kinetics were described by pseudo-first- and -second-order models as follows ( Huang et al, 2015 ; Huang et al, 2016 ):

…”

Section: Methodsmentioning

confidence: 99%

Removal efficacy of fly ash composite filler on tailwater nitrogen and phosphorus and its application in constructed wetlands

et al. 2023

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Constructed wetlands (CWs) have been widely used in tailwater treatment. However, it is difficult to achieve considerable removal efficiency of nitrogen and phosphorus in tailwater solely by CWs—an efficient green wetland filler is also important. This study investigated 160 domestic sewage treatment facilities (DSTFs) in rural areas from two urban areas in Jiaxing for TP and NH3-N and found that TP and NH3-N concentrations in rural domestic sewage (RDS) in this plain river network are still high. Therefore, we selected a new synthetic filler (FA-SFe) to enhance nitrogen and phosphorus reduction, and we discuss the importance of filler in constructed wetlands. Experiments revealed the adsorption capacity of the new filler: the maximum adsorption amounts of TP and NH3-N reached 0.47 g m-2 d-1 and 0.91 g m-2 d-1, respectively. The application potential of FA-SFe was verified in actual wastewater treatment, with the removal rates of ammonia nitrogen and TP reaching 71.3% and 62.7%, respectively. This study provides a promising pathway for nitrogen and phosphorus removal from rural tailwaters.

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Characteristics of phosphorus sorption at the sediment–water interface in Dongting Lake, a Yangtze-connected lake

Cited by 19 publications

References 32 publications

Sorption Properties of the Bottom Sediment of a Lake Restored by Phosphorus Inactivation Method 15 Years after the Termination of Lake Restoration Procedures

Sorption Properties of the Bottom Sediment of a Lake Restored by Phosphorus Inactivation Method 15 Years after the Termination of Lake Restoration Procedures

Seasonal characteristics of phosphorus sorption by sediments from plain lakes with different trophic statuses

Removal efficacy of fly ash composite filler on tailwater nitrogen and phosphorus and its application in constructed wetlands

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