Spatial distribution of phosphorus forms and the release risk of sediments phosphorus in West Lake, Hangzhou, China

Xu, Dong; Yan, Pan; Liu, Zisen; Zhang, Mingzhen; Yan, Wenhao; Liu, Yunli; Wu, Zhenbin; Zhang, Yi

doi:10.1016/j.ecoleng.2021.106421

Cited by 17 publications

(5 citation statements)

References 58 publications

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“…PSI exhibits a strong correlation with the maximum adsorption capacity of phosphorus, indicating the buffering effect of the adsorbent. A smaller PSI value indicates a weaker buffering effect, while a larger one suggests a stronger one ( Xu et al., 2021 ). The smaller the value the lower the buffering capacity of the soil for phosphorus, and vice versa, the better the buffering effect ( Xu et al., 2021 ).…”

Section: Resultsmentioning

confidence: 99%

“…A smaller PSI value indicates a weaker buffering effect, while a larger one suggests a stronger one ( Xu et al., 2021 ). The smaller the value the lower the buffering capacity of the soil for phosphorus, and vice versa, the better the buffering effect ( Xu et al., 2021 ). DPS can be used to evaluated the soil environmental capacity of phosphorus ( Lauryssen et al., 2023 ), and to predict the potential of soil phosphorus loss, and the greater the DPS, the greater it means that most of the adsorption points on the soil surface that can adsorb phosphate in water have been occupied ( Xu et al., 2022 ).…”

Section: Resultsmentioning

confidence: 99%

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Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

Jiang,

Yan,

Liu

et al. 2023

Front. Plant Sci.

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IntroductionThe Songnen Plain is one of the three major saline-alkali areas in China, covering a vast area, where drought and overgrazing have exacerbated the salinization trend, and will have great potential for development if utilized rationally. Phosphorus, as one of important soil nutrients, plays a crucial role in plant growth. How to minimize its loss and migration has become a current research hotspot. The objective of the present study was to elucidate the adsorption properties of phosphorus in soils affected by salinization and to establish the correlation between the potential for phosphorus release and soil properties.MethodsA batch treatment test was conducted in this study using three soils with the various salinization degrees to examine the impact of environmental factors on the adsorption properties and potential release of phosphorus.Results and discussionIt was found that the maximum phosphorus adsorption by the three salinization soils in 0-360 minutes accounted for 86.8%-90.5% of the total adsorption capacity; the equilibrium adsorption capacity was: HS> MS> LS. In cases where the phosphorus level in the surrounding liquid is low, the three levels of salinized soils exhibited varying levels of phosphorus discharge, with the adsorbent acting as the origin of contaminants. The Pseudo-second-order model kinetics and Langmuir equation can well describe the adsorption process, and the adsorption process is spontaneous heat absorption with entropy increase. Increasing the pH led to an increase in the adsorption of phosphorus from the three salinized soils. Additionally, the adsorption was enhanced by introducing varying concentrations of Na+, Ca2+, and Al3+ to the background solution. The phosphorus eutrophication release risk (ERI) demonstrated a gradual decline as temperature increased. Correlation analysis revealed a noteworthy positive correlation between TN, TP, and ERI, as well as a significant negative correlation between CEC, K+, and ERI. Furthermore, there was a highly significant negative correlation between coarse silt and fine silt. Considering local climatic and environmental factors is crucial for controlling the adsorption capacity of phosphorus in various salinized soils, as it can unveil the mechanism of phosphorus adsorption and impact its migration and release risk.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

Jiang,

Yan,

Liu

et al. 2023

Front. Plant Sci.

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“…Among them, the state of iron-phosphorus binding is easily changed and directly affects the release of endogenous P [26,27]. Xu et al [28] evaluated the P content and release risk in West Lake sediments and found that the concentration of P in sediments was mainly related to the content of reactive iron-aluminum oxides, and was positively correlated with Fe/Al-P, with a correlation coefficient of 0.745. Wang et al [29] studied the distribution and morphology of P, Fe, and sulfur (S) in the surface sediments of a mildly eutrophic reservoir in southwest China using high-resolution thin-film diffusion gradient (DGT) and conventional sequential extraction techniques, and found that the release of sedimentary P was significantly inhibited at Fe/P > 30 ratios.…”

Section: Mechanisms Of Fe Oxidation and P Adsorption And The Influenc...mentioning

confidence: 99%

The Effect of Iron-Modified Biochar on Phosphorus Adsorption and the Prospect of Synergistic Adsorption between Biochar and Iron-Oxidizing Bacteria: A Review

Liu,

He,

Borham

et al. 2023

Water

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The release of endogenous phosphorus (P) from sediments is the main cause of lake eutrophication, even after the successful control of exogenous P. Among others, the release of iron-bound P is a major source of endogenous P, and it is necessary to reduce the P concentration by enhancing iron–phosphorus binding. Iron (Fe)-modified biochar adsorption is an effective and widely used method for fixing P in sediments. In this paper, the modification method, mechanism, and application effect of Fe-modified biochar are reviewed. It is found that most of the modification methods are realized through a physicochemical pathway. Therefore, the prospect of biochar modification through a biological pathway is presented. In particular, the possible application of iron-oxidizing bacteria (IOB) for promoting iron–phosphorus binding and biochar modifications is discussed. The potential effects of biochar additions on microbial communities in water and sediments are also discussed. In the future research, emphasis should be placed on the adsorption mechanism and effect analysis in simulated polluted environments before large-scale use, to ensure the economic practicability and sustainability of Fe-modified biochar applications.

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“…The upper reaches of the river were located in a transition region of land use type, i.e., from woodland to agricultural. This change in land use type led to a change of soil structure [44], which influenced the absorption and utilization degree of nitrogen and phosphorus of surface sediments. Therefore, the STP content at point B1 increased.…”

Section: Distribution Characteristics Of Total Phosphorus Content And...mentioning

confidence: 99%

Distribution Characteristics and Source Analysis of Nitrogen and Phosphorus in Different Rivers in Two Water Period: A Case Study of Pi River and Shiting River in the Upper Reaches of Tuo River in China

Zhou

Ding

et al. 2022

IJERPH

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In this paper, the distribution characteristics of total nitrogen (TN), total phosphorus (TP) and fractions of nitrogen and phosphorus in water and surface sediments of the Pi and Shiting rivers in the dry and wet seasons were studied by molybdenum blue/ascorbic acid spectrophotometry and Standard Measurements and Testing (SMT). Correlation analysis, cluster analysis and principal component analysis were used to identified nitrogen and phosphorus pollution sources. The results showed that: (1) nitrogen and phosphorus in water and surface sediments in the study area were at different levels. (2) In the Pi river, the decomposition of animal and plant residues, the leachate from the accumulation of aquaculture wastewater and urban domestic sewage were the main sources of nitrogen and phosphorus pollution, while in the Shiting river, the unreasonable application of pesticides and fertilizers, the degradation of animal and plant residues, agricultural wastewater from agricultural drainage channels, industrial production wastewater and the weathering of agricultural wastes had a great impact on the nitrogen and phosphorus pollution. The results in this study provide reliable experimental data and a reference to local relevant departments for the implementation of effective control measures for the reduction of the nitrogen and phosphorus pollution load in the river basin.

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Spatial distribution of phosphorus forms and the release risk of sediments phosphorus in West Lake, Hangzhou, China

Cited by 17 publications

References 58 publications

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

The Effect of Iron-Modified Biochar on Phosphorus Adsorption and the Prospect of Synergistic Adsorption between Biochar and Iron-Oxidizing Bacteria: A Review

Distribution Characteristics and Source Analysis of Nitrogen and Phosphorus in Different Rivers in Two Water Period: A Case Study of Pi River and Shiting River in the Upper Reaches of Tuo River in China

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