Phosphorus uptake by suspended sediments from a heavy eutrophic and standing water system in Suzhou, China

Li, Dapeng; Huang, Yong

doi:10.1016/j.ecoleng.2013.07.008

Cited by 16 publications

(5 citation statements)

References 38 publications

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“…The total P concentrations in the higher sediment with MBR incorporation (T7) were higher ( Figure 2 ), showing a high level of total P content. Similar results were reported in highly eutrophic sediments incorporated in soils in China ( Li and Huang, 2013 ). Likewise, the highest P concentration in soils is incorporated with the sediments of Dianchi Lake sediment ( Li et al., 2007 ; Zheng et al, 2019 ).…”

Section: Discussionsupporting

confidence: 89%

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Mahmood,

Wang,

Ahmed

et al. 2023

Front. Plant Sci.

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Phosphorus (P) availability in soil is paradoxical, with a significant portion of applied P accumulating in the soil, potentially affecting plant production. The impact of biochar (BR) and fishpond sediments (FPS) as fertilizers on P fixation remains unclear. This study aimed to determine the optimal ratio of BR, modified biochar (MBR), and FPS as fertilizer replacements. A pot experiment with maize evaluated the transformation of P into inorganic (Pi) and organic (Po) fractions and their contribution to P uptake. Different percentages of FPS, BR, and MBR were applied as treatments (T1–T7), T1 [(0.0)], T2 [FPS (25.0%)], T3 [FPS (25.0%) + BR (1%)], T [FPS (25%) +MBR (3%)], T5 [FPS (35%)], T6 [FPS (35%) +BR (1%)], and T7 [FPS (35%) + MBR (1%)]. Using the modified Hedley method and the Tiessen and Moir fractionation scheme, P fractions were determined. Results showed that various rates of MBR, BR, and FPS significantly increased labile and moderately labile P fractions (NaHCO3-Pi, NaHCO3-Po, HClD-Pi, and HClC-Pi) and residual P fractions compared with the control (T1). Positive correlations were observed between P uptake, phosphatase enzyme activity, and NaHCO3-Pi. Maximum P uptake and phosphatase activity were observed in T6 and T7 treatments. The addition of BR, MBR, and FPS increased Po fractions. Unlike the decline in NaOH-Po fraction, NaHCO3-Po and HClc-Po fractions increased. All Pi fractions, particularly apatite (HClD-Pi), increased across the T1–T7 treatments. HClD-Pi was the largest contributor to total P (40.7%) and can convert into accessible P over time. The T5 treatment showed a 0.88% rise in residual P. HClD-Pi and residual P fractions positively correlated with P uptake, phosphatase activity, NaOH-Pi, and NaOH-Po moderately available fractions. Regression analysis revealed that higher concentrations of metals such as Ca, Zn, and Cr significantly decreased labile organic and inorganic P fractions (NaHCO3-Pi, R2 = 0.13, 0.36, 0.09) and their availability (NaHCO3-Po, R2 = 0.01, 0.03, 0.25). Excessive solo BR amendments did not consistently increase P availability, but optimal simple and MBR increased residual P contents in moderately labile and labile forms (including NaOH-Pi, NaHCO3-Pi, and HClD-Pi). Overall, our findings suggest that the co-addition of BR and FPS can enhance soil P availability via increasing the activity of phosphatase enzyme, thereby enhancing plant P uptake and use efficiency, which eventually maintains the provision of ecosystem functions and services.

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Section: Discussionsupporting

confidence: 89%

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Mahmood,

Wang,

Ahmed

et al. 2023

Front. Plant Sci.

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“…It was also found that a high portion of the P input into the Yellow river, China, was removed by adsorption, which was due to the high SPM values. In our study, the K f of PO 4 -P on SPM was 0.8360 mg/L (Table 1 ), which was almost 50% of the P adsorption capability of SPM discovered previously 19 and was remarkably lower than that in a heavy eutrophic water system in Suzhou, China 20 . We therefore suggested that the SPM in the Yulin River had a relatively weak P sorption capacity (Fig.…”

Section: Discussionsupporting

confidence: 52%

New insights into the impacts of suspended particulate matter on phytoplankton density in a tributary of the Three Gorges Reservoir, China

Qiu

Liu

et al. 2017

Sci Rep

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Phytoplankton density can be influenced by a wide range of factors whereas the role of suspended particulate matter (SPM) are not clear in river that annually subjected to hydrodynamics shift. Here, spatial-temporal variation of environmental parameters and phytoplankton density were studied from January 2013 to December 2014 in Yulin River, a tributary of the Three Gorges Reservoir, China. Laboratory experiments were conducted to elucidate the key parameter and interpret how it impacted phytoplankton density. SPM is negatively correlated with phytoplankton density. Despite SPM in Yulin River revealed weaker NH3-N, NO3-N and PO4-P adsorption capabilities in comparison to that in other aquatic ecosystems, increase of water velocity from 0.1 to 0.8 m/s led to approximately 6.8-times increase of light attenuation rate. In experiments evaluating the aggregation of Chlorella pyrenoidosa upon SPM, floc size showed 7.4 to 22% fold increase compared to the SPM or algae itself, which was due to the interaction between SPM and phytoplankton extracellular polymeric substances. Our results suggest that SPM could contribute to the variation of phytoplankton density through the integrated process including light attenuation, nutrient adsorption and algae aggregation. This is the first evaluation of the multiple processes underlying the impact of SPM on phytoplankton.

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“…Previous research has shown that in anaerobic conditions many DPAB could quickly absorb short-chain volatile fatty acids and store them in the form of PHA in their bodies, and degraded internal poly-P with PO 4 3À -P form into the sewage (Liu et al, 2011;Li and Huang, 2013). Under aerobic conditions, these strains could use O 2 or NO 3 À -N as electron acceptors for phosphorus absorption.…”

Section: Discussionmentioning

confidence: 99%

“…However, these two processes are not balanced in these organisms, with a clear bias toward phosphorus uptake (Li and Huang, 2013). The discovery of these organisms introduces the possibility of solving the contradiction between carbon utilization and sludge age such that nitrogen and phosphorus removal can be achieved simultaneously (Bortone et al, 1999;Lee et al, 2001;Guo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Biological characteristics of a denitrifying phosphorus-accumulating bacterium

Sun

Zhao

Zhang

et al. 2015

Ecological Engineering

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Phosphorus uptake by suspended sediments from a heavy eutrophic and standing water system in Suzhou, China

Cited by 16 publications

References 38 publications

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

New insights into the impacts of suspended particulate matter on phytoplankton density in a tributary of the Three Gorges Reservoir, China

Biological characteristics of a denitrifying phosphorus-accumulating bacterium

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