Effects of particle size, organic matter and ionic strength on the phosphate sorption in different trophic lake sediments

Wang, Shengrui; Jin, Xin; Bu, Qingyun; Zhou, Xuefei; Wu, Fengchang

doi:10.1016/j.jhazmat.2005.07.048

Cited by 100 publications

(42 citation statements)

References 37 publications

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“…As a proxy for organic matter, mass loss-on-ignition (LOI) was measured by difference after combustion in a muffle furnace at 550°C for 4 h (Belmont et al 2009). The grain size fractions were measured using a Mastersizer 2000 Laser Size Analyzer (Malvern, UK) and were classified into clay (<0.002 mm), silt (0.002-0.05 mm) and sand fractions (0.05-2 mm) (Wang et al 2006). The Brunauer, Emmett and Teller (BET) surface area was determined at liquid N 2 temperature (−194°C) by the N 2 sorption-desorption technique on an ASAP 2010 (Micrometrics, USA).…”

Section: Sampling and Analysismentioning

confidence: 99%

Influence of incubation time on phosphorus sorption dynamics in lake sediments

et al. 2011

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Purpose Estimating phosphorus (P) sorption is generally achieved by measuring a decrease in P concentration over a defined period. However, information within the literature has not been able to be widely applied, probably due to the variability in incubation periods and initial P concentrations in reported experiments. The objective of this study was to investigate whether variations in incubation time and initial P concentration might result in differences in measured levels of P sorption in sediments. Materials and methods Sediments were collected from four eutrophic lakes (Hua, Mei, Gong and Dong) in eastern China. Sorption kinetics were measured over a 360-h incubation period. Isotherm sorption experiments were conducted over two incubation periods (24 h and 360 h) and three initial P ranges (0-5 mg l −1 , 0-20 mg l −1 and 0-100 mg l −1 ). Results and discussion The longer incubation period (360 h) and increased levels of initial P resulted in increased sorption maxima (S max ). Fit to the Langmuir model decreased with an increase in the range of initial P concentration. The Freundlich model provided a better fit for the isotherm data than the Langmuir model. Desorption of freshly sorbed P with triplicate P-free water solution indicated that the longer incubation period facilitated the net retention of P. Loosely bound P, aluminum-bound P and iron-bound P were the most predominant P pools. Overall, the Mei, Gong and Dong sediments showed much larger P sorption potential and lower levels of labile P than Hua sediments. The P sorption reaction was a continuous process. The amount of sorption determined at any given time may be underestimated under conditions when the sorption rate was not negligible and sorption equilibrium had not been reached. As a consequence, experimental conditions in sorption studies such as time and initial concentration could, therefore, influence observed results. Conclusions Differences in incubation period and initial P concentration resulted in different sorption outcomes in these sorption experiments. These differences are likely to lead to difficulties when comparing results obtained under different experimental conditions. It is, therefore, recommended that experimental conditions need to be designed to ensure that sorption equilibria have been reached. It is Responsible editor: Ian Foster recommended that standardized procedures be used for studies designed to determine P sorption.

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Section: Sampling and Analysismentioning

confidence: 99%

Influence of incubation time on phosphorus sorption dynamics in lake sediments

et al. 2011

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“…Texture of sediment determined most size particle of sediment sample that refer specific area of sediment of sediment. The specific surface area is increase as a particle size become small that important for sorption capacity and ion exchange capacity [14]. 137 Cs and the % organic matter that showed not significant correlation (r=0.76, p>0.05) (Fig 4).…”

Section: Resultsmentioning

confidence: 97%

“…One of the more important factors influencing the transport of particle-reactive chemicals is the particle size distribution of sediment. Furthermore, the particle size distribution of sediment that important factor influencing the transport of 137 Cs in sediment [1] [6] [14]. The concentrations of 137 Cs in the fine fraction higher than the coarser fraction that indicated the 137 Cs concentration decrease with an increase in particle size [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of sediment characteristics on sorption of 137Cs at the sediment-water interface

2013

IOSR-JESTFT

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“…Organic matter was removed for laser-diffraction particle size study. Pretreatments for grain-size analysis frequently use oxidative treatments (Buurman, Pape, & Muggler, 1996;Fullen, Zheng, & Brandsma, 1996;Scott-Jackson & Walkington, 2005;Wang, Jin, Bu, Zhou, & Wu, 2006). All of the samples were mixed with a dispersing agent (.3% sodium hexametaphosphate) in order to disperse the clay particles.…”

Section: Loss-on-ignition and Grain-size Analysesmentioning

confidence: 99%

Reconstructing mid-to-recent Holocene paleoenvironments in the vicinity of ancient Amarynthos (Euboea, Greece)

et al. 2012

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This article examines the shoreline evolution and human occupation in the vicinity of the important archeological site of Amarynthos (Euboea Island, Greece) over the last six millennia. Archeological evidence indicates a continuous occupation of the site from the Bronze Age to the Roman period and the site is well-known, thanks to the existence of a sanctuary dedicated to the goddess Artemis. Based on the study of four boreholes, a paleogeographic reconstruction of the coastal landscape is proposed. Facies were determined based on mollusc identification, and sedimentology based on grain-size measurements (hand sieving for the fraction above 2 mm and LASER technique for particles below 2 mm) and loss-on-ignition. In addition, a series of 12 AMS radiocarbon dates define a reliable chronostratigraphy. Results suggest the presence of a fully marine environment from the early Holocene to ca. 2600-2400 cal. BC, which developed into a brackish environment from ca. 2600-2400 cal. BC to ca. 750 cal. BC due to the deltaic progradation of the nearby stream (Sarandapotamos River). From ca. 750 cal. BC onward, coastal swamps prevailed in the study area. Human-environmental interaction is discussed and particular attention is paid to the paleolandscape configuration of Amarynthos.

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Effects of particle size, organic matter and ionic strength on the phosphate sorption in different trophic lake sediments

Cited by 100 publications

References 37 publications

Influence of incubation time on phosphorus sorption dynamics in lake sediments

Influence of incubation time on phosphorus sorption dynamics in lake sediments

Effect of sediment characteristics on sorption of 137Cs at the sediment-water interface

Reconstructing mid-to-recent Holocene paleoenvironments in the vicinity of ancient Amarynthos (Euboea, Greece)

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