Phosphorus fractions and phosphate sorption-release characteristics relevant to the soil composition of water-level-fluctuating zone of Three Gorges Reservoir

Zhang, Bin; Fang, Fang; Guo, Jinsong; Chen, You‐Peng; Li, Zhe; Guo, Songsong

doi:10.1016/j.ecoleng.2011.12.024

Cited by 124 publications

(57 citation statements)

References 24 publications

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“…The adsorption efficiency (1/n was calculated by the Freundlich model and represented the adsorption capacity of the adsorbent) was between 0.40 and 0.77 in the water covered zone and larger (0.94-1.42) in the water-level fluctuating zone, which indicates that P adsorption is more difficult in the water-level fluctuating zone. The similar results are reported in research examining the Three Gorges Reservoir research [15].…”

Section: Adsorption and Release Characteristics Of Sediments P In Bilsupporting

confidence: 74%

“…These values in Biliuhe reservoir are 8.8-25.13 mg/kg and 1.16-4.16%, respectively. In the Three Gorges reservoir, Ca-P is the main fraction of IP, while Fe/Al-P is the main fraction of IP in Biliuhe reservoir, and Fe/Al-P is more easily released [15]. Through comparison, it is obvious that there is a greater release capacity in the Biliuhe reservoir, which is related to the fraction of phosphorus in the sediment.…”

Section: Environment Influence Of Sediment Pmentioning

confidence: 85%

“…The concentration of sediment phosphorus ranges from 443 mg/kg to 611 mg/kg in Baiyangdian Lake, which has become a potential factor of water eutrophication [16]. Similarly, sediment P concentration is between 390 mg/kg and 810 mg/kg in the Three Gorges reservoir [15]. In Nyanza Lake in Africa, the concentration ranges from 812.7 mg/kg to 1738 mg/kg, and this relatively high concentration results in high contamination risk [39].…”

Section: Environment Influence Of Sediment Pmentioning

confidence: 99%

“…Plants have the ability to adsorb some P in a long exposed area, and rainfall erosion can also reduce the P content. Thus, sediment P in water-level fluctuating zones can result in lower values after a longer exposure time [15,27].…”

Section: Distribution and Fractions Of Sediments P In Biliuhe Reservoirmentioning

confidence: 99%

“…Generally, the Langmuir and the Freundlich equations can be used to describe the sediment adsorption process, which can calculate the maximum adsorption capacity and the adsorption efficiency to analyse the characteristics of sediment. Zhang et al studied the adsorption and release of sediment P in the Three Gorges Reservoir and showed that the maximum adsorption capacity varied from 137.79 to 1975.5 mg/kg [15]. Dong et al, researched the adsorption and release characteristics of P in sediments of Baiyangdian Lake, which showed that P was a risk factor for water quality and ecosystems [16].…”

Section: Introductionmentioning

confidence: 99%

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Spatial Distribution, Adsorption/Release Characteristics, and Environment Influence of Phosphorus on Sediment in Reservoir

Wang

Liu

et al. 2017

Water

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Sediment gradually accumulates at the bottom of reservoirs after decades of running. To explore the influences of sediments on the water quality of reservoirs, the spatial distribution, adsorption/release characteristics, and environment influence of sediment pollutants should be analyzed. In this paper, the spatial distributions of phosphorus (P) and P fractions in the Biliuhe reservoir (river valley reservoirs) sediments were investigated. The adsorption and release characteristics of sediments P were studied in the experiment, while its environmental influence was analyzed too. The results indicate that the concentration of P in sediments was higher at the dam and the Zhongling site, while lower at other entrances of the reservoir and the smallest in the water-level fluctuating zone. Total Phosphorus (TP) varied from 355.46 to 764.57 mg/kg. Inorganic Phosphorus (IP) was the main form of TP in sediments, making up a proportion of 56-75%, while the correlation coefficient of P bound to Al, Fe, and Mn oxides was 0.922. Hydroxide (Fe/Al-P) was the main form of IP, which accounted for 46-83% with a correlation coefficient of 0.888. The maximum adsorption capacity calculated by Langmuir model was between 714.29 and 3333.33 mg/kg. The adsorption efficiency obtained by the Freundlich model was within the range of 0.40-1.42, which indicated that P adsorption was more difficult in the water-level fluctuating zone. The critical adsorption and release concentration range was 0.1-0.2 mg/L for the majority of the sampling points. The amount of P released in 24 h (the initial concentration of TP in the overlying water was 0 mg/L) accounted for 1.15-4.16% of TP in sediments, which was higher than the average concentration in the reservoir. It is concluded that the sediment is the potential pollution source. The relationship between the change of environmental factors and the release of sediment contaminants should be considered in the future.

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Section: Adsorption and Release Characteristics Of Sediments P In Bilsupporting

confidence: 74%

Section: Environment Influence Of Sediment Pmentioning

confidence: 85%

Section: Environment Influence Of Sediment Pmentioning

confidence: 99%

Section: Distribution and Fractions Of Sediments P In Biliuhe Reservoirmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial Distribution, Adsorption/Release Characteristics, and Environment Influence of Phosphorus on Sediment in Reservoir

Wang

Liu

et al. 2017

Water

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Adsorption Characteristics of Phosphorus onto Soils from Water Level Fluctuation Zones of the Danjiangkou Reservoir

Ren

Zhang

et al. 2016

CLEAN Soil Air Water

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A comparative study was conducted to investigate the adsorption characteristics of phosphorus (P) on two soil samples collected from a typical subtropical reservoir and to reveal the possible influence of alternating exposure and inundation on the P adsorption onto soil in a water level fluctuation zone. Short-term batch experiments were performed, and characterization methods, such as scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy, were also used. The P adsorption kinetics for both soils was best described by a pseudo-second order model (R 2 > 0.99). A modified Langmuir model described the P adsorption on both samples well, and low temperature increased the risk of releasing soil P into the overlying water. Low pH values were not conducive to the P adsorption process. It appeared that alternating exposure and inundation had no significant impact on the adsorption capacity of P onto soil from water level fluctuation zones in this research. pH, SEM, and FT-IR analyses demonstrated that Fe, Al, and Ca contained in the clay minerals of the soil played an important role in the adsorption of P onto soil from water level fluctuation zone.Abbreviations: BET, Brunauer-Emmett-Teller; EPC 0 , zero equilibrium phosphorus concentration value; FT-IR, Fourier transform infrared; NAP, native-adsorbed exchangeable phosphorus; SEM, scanning electron microscopy; XRF, X-ray fluorescence. 975

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Phosphorus Availability in Soils and Use Efficiency for Food and Environmental Sustainability

Singh¹,

Bhatt

Kaur³

2021

Input Use Efficiency for Food and Environmental Security

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Phosphorus fractions and phosphate sorption-release characteristics relevant to the soil composition of water-level-fluctuating zone of Three Gorges Reservoir

Cited by 124 publications

References 24 publications

Spatial Distribution, Adsorption/Release Characteristics, and Environment Influence of Phosphorus on Sediment in Reservoir

Spatial Distribution, Adsorption/Release Characteristics, and Environment Influence of Phosphorus on Sediment in Reservoir

Adsorption Characteristics of Phosphorus onto Soils from Water Level Fluctuation Zones of the Danjiangkou Reservoir

Phosphorus Availability in Soils and Use Efficiency for Food and Environmental Sustainability

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