Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

An, Wenchao; Li, X. M.

doi:10.1007/s10661-007-0149-6

Cited by 55 publications

(33 citation statements)

References 22 publications

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“…C EPC is phosphorus equilibrium concentration in water where is no phosphorus adsorption/desorption (Q=0, C EPC =ω NAP /M). The status (adsorption/desorption) of phosphorus in soil can be estimated by comparing phosphorus concentration in water and C EPC at the same site (An & Li, 2009). Because the TP concentrations in the groundwater and spring water was almost TDP concentrations in this study (Sec.…”

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 93%

“…In this study, the Langmuir formula was selected for the fitting adsorption isotherm. When initial concentration phosphorus in solution is low or medium, Langmuir formula can be changed as following equation (An & Li, 2009). The results of application of equation (4) for different sites are shown in Fig.…”

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

“…The data of R 2 , m, ω NAP and C EPC in soils are shown in Table 4. (4) is phosphorus adsorption efficiency of soil particles, and the value of M is increasing with the phosphorus adsorption efficiency of soil particles (An & Li, 2009). Generally, phosphorus will be desorbed from soil when no phosphorus in water.…”

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

“…Therefore, the existing phosphorus in soil can be released when C eq is 0. The releasable phosphorus is mainly adsorbed by soil particle surface, which can be released into water easily under certain conditions (An & Li, 2009).…”

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

“…4.3), the comparison of TDP concentration (C TDP ) and C EPC should be used to estimate the status of phosphorus in soil. The estimating rules are 1) when C TDP <C EPC , phosphorus can be desorbed from soil particles, 2) when C TDP >C EPC , TDP in water can be adsorbed by soil particles, 3) when C TDP =C EPC , there is no adsorption/desorption of phosphorus in water by soil particles (balanced status) (An & Li, 2009;Gang, 2003;Zhou et al, 2005).…”

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

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Distribution and Adsorption Characteristics of Phosphorus at A Headwater Wetland in Ichikawa City, Chiba Prefecture, Japan

Piao¹,

Tang²,

Matsumaru³

et al. 2016

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The distribution and adsorption characteristics of phosphorus were investigated in a typical headwater wetland in Ichikawa City, Chiba Prefecture, Japan. Total dissolved phosphorus (TDP) was the main phosphorus fraction in the waters, ranging from limit of quantification (0.002 mg/L) to 0.059 mg/L in spring water, from limit of quantification to 0.128 mg/L in groundwater and from 0.012 to 0.048 mg/L in river water. TDP in 33% water samples were higher than the environmental quality standard for eutrophication (0

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Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 93%

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

Section: Adsorption Characteristics Of Phosphorus In Soilmentioning

confidence: 99%

See 3 more Smart Citations

Distribution and Adsorption Characteristics of Phosphorus at A Headwater Wetland in Ichikawa City, Chiba Prefecture, Japan

Piao¹,

Tang²,

Matsumaru³

et al. 2016

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Stability of P Saturated Water Treatment Residuals under Different Levels of Dissolved Oxygen

Wang

Fei

Pei

2012

CLEAN Soil Air Water

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Water treatment residuals (WTRs) are effective phosphorus (P) immobilizers that have been used in constructed wetlands (CWs). In CWs, dissolved oxygen (DO) levels vary from location to location and fluctuate over time. Therefore, this work accessed the stability of P saturated ferric and alum water treatment residuals (FARs) under low (<1 mg/L), medium (2-4 mg/L), and high (5-8 mg/L) DO levels. In the experiments, which had a 40-day duration, three stages of P release from the P saturated FARs were observed: an initial rapid P desorption stage, followed by a P re-adsorption stage, and a P desorption balance stage. The strongest bonding between P and FARs occurred at the low DO level. A limited amount of Fe and Al was released from the P saturated FARs. Interestingly, the P in the FARs tended to transform from the Al bound P to the Fe bound P, and this transformation was stronger at lower DO levels. However, no more than 1.12% of the total P in the P saturated FARs was desorbed under any of these DO levels. Therefore, FARs can be considered as a safe P adsorption medium for CWs.

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Phosphorus Bioavailability and Release Potential Risk of the Sediments in the Coastal Wetland: A Case Study of Rongcheng Swan Lake, Shandong, China

Gao

Zhang

Shao

2013

CLEAN Soil Air Water

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Rongcheng Swan Lake, a natural coastal wetland, is connected to Rongcheng Bay of Yellow Sea, China. In this lagoon, water quality has deteriorated gradually in recent 30 years and filamentous Chaetomorpha linum have bloomed during the past five years. In present study, the concentration, fractions, and bioavailability of phosphorus (P) in surface sediments were investigated throughout the lake. In order to evaluate P retention ability of the wetland, six sediment samples from different lake regions were collected to study P adsortion kinetics, adsortion capacity and the relation to sediment properties. In Swan Lake, total P concentrations in sediments varied from 79 to 616 mg/kg, which were significantly higher in northwest region than those in southeast region. Sediment grain size and external inputs were the main factors affecting P distribution. Inorganic P concentration was obviously higher than that of organic P, and Ca-P was the important form in the sediments. Fe/Al-P showed a large spatial variation, with relatively high concentrations occurring at the northeastern corner and the western tip strongly affected by the discharge of wastewater. The adsorption isotherms were well fitted by Linear equation at low P conditions and by Langmuir equation at high initial P concentrations, respectively. The sediments in the northern and central lake had higher P adsorption capacity, while in southern lake the degree of P saturation of the sediments was high. Ammonium oxalate extractable Al, organic matter, and fine particle were important factors influencing P adsorption. In Swan Lake, algae available P (AAP) was the largest form of bioavailable P, followed by Olsen-P; moreover, AAP and Olsen-P showed significant correlations with Fe/Al-P. As a whole, TP concentration in sediments from Swan Lake was low, and the sediments at most regions had buffering ability for P in overlying water; while at the western tip of lake where macroalgal blooms frequently breakout, AAP concentration was relatively high and the sediments had higher potential for releasing P into water column.

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Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

Cited by 55 publications

References 22 publications

Distribution and Adsorption Characteristics of Phosphorus at A Headwater Wetland in Ichikawa City, Chiba Prefecture, Japan

Distribution and Adsorption Characteristics of Phosphorus at A Headwater Wetland in Ichikawa City, Chiba Prefecture, Japan

Stability of P Saturated Water Treatment Residuals under Different Levels of Dissolved Oxygen

Phosphorus Bioavailability and Release Potential Risk of the Sediments in the Coastal Wetland: A Case Study of Rongcheng Swan Lake, Shandong, China

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