Effects of aluminum, iron, oxygen and nitrate additions on phosphorus release from the sediment of a Danish softwater lake

Hansen, Jonas; Reitzel, Kasper; Jensen, Henning S.; Andersen, Frede Østergaard

doi:10.1023/a:1024826131327

Cited by 93 publications

(47 citation statements)

References 22 publications

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“…Effects of such measures on a small lake are discussed by Hansen et al (2003). In the lakes studied here, these measures do not seem feasible due to the size of the lakes and the still substantial P input, which would require repeated addition of Fe.…”

Section: Discussionmentioning

confidence: 99%

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Moosmann

Gächter

Müller

et al. 2006

Limnology & Oceanography

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Eutrophication of various lakes on the Swiss Plateau was targeted in the 1980s by reducing external nutrient loading and installing aeration/oxygenation systems. For five eutrophic lakes, three of which have been artificially oxygenated and aerated for almost 20 yr, phosphorus (P) balances were established using input, water-column inventory, export via the outlet, and sediment core data. To separate the effects of aeration/oxygenation from the effects of P-input reduction, two measures of P retention were determined-the ratio of net sedimentation to input and the ratio of net sedimentation to gross sedimentation. A comparison among the five lakes shows that, presently, P retention does not differ significantly between lakes with aeration/oxygenation and lakes with an anoxic hypolimnion, whereas retention at times of maximum P concentrations in the 1970s and 1980s was significantly lower compared with retention in today's moderately eutrophic lakes. This is in agreement with the finding that net sedimentation in all lakes remained relatively constant between 280 and 950 kg km Ϫ2, independent of their P concentration. It is shown that constant net sedimentation is likely to prevail as long as P concentrations remain above a critical value of around 40 mg m Ϫ3 . Constant net sedimentation indicates that permanent deposition of P is limited by the sediment's binding capacity. Oxic conditions in the hypolimnion do not necessarily increase this capacity because redox-dependent P species may still be released within the anoxic bulk sediment and diffuse back into the water column. To characterize the P retention capacity of anoxic sediments, we suggest that the P burial rate be determined from dated sediment cores rather than from input/output balances.In natural, nonoxygenated lakes, trophic state and oxygen concentration of lake water and sediments are closely linked. First, high levels of primary production result in high dissolved oxygen (DO) consumption in the hypolimnion and a low penetration depth of oxygen into the sediment. Second, the DO concentration of the water overlaying the sediment affects the release of phosphorus (P) from the sediment: As Einsele (1936) proposed andMortimer (1941) demonstrated in his classical field and laboratory studies, P is retained effectively in the sediment if the overlaying water is oxic but is released as soon as this water turns anoxic. Numerous field studies (e.g., Ashley 1983; Prepas and Burke 1997) have shown the reduction of hypolimnetic P concentrations after the onset of artificial oxygenation.This interaction of P and DO has called for a combined approach when targeting eutrophication in Swiss lakes. On the Swiss Plateau (Fig.

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Section: Discussionmentioning

confidence: 99%

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Moosmann

Gächter

Müller

et al. 2006

Limnology & Oceanography

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“…First, nitrate availability at the SWI reduces the likelihood of reductive dissolution of iron (oxyhydr)oxides during short periods of bottom water anoxia. This is due to nitrate's higher energetic efficiency as an electron acceptor than iron (e.g., Hansen et al 2003;Parsons et al 2017); as nitrate must be consumed prior to the onset of iron reduction (Reed et al 2011), longer periods of anoxia are required to cause release of iron-bound P. Second, heterotrophic nitrate reduction (denitrification) coupled to the oxidation of organic matter may deplete the sediment of labile organic matter, decreasing the probability, or rate, of reductive dissolution of iron oxyhydroxides at greater sediment depth due to electron donor limitation. Third, nitrate reduction can be coupled directly to the oxidation of upward-diffusing iron(II) from more reduced sediments (e.g., Straub et al 1996;Hauck et al 2001;Melton et al 2012).…”

Section: Nitrate Concentrations In Surface Watermentioning

confidence: 99%

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Orihel

Baulch

Casson

et al. 2017

Can. J. Fish. Aquat. Sci.

198

133

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Many physical, chemical, and biological processes in freshwater ecosystems mobilize the nutrient phosphorus (P) from sediments, which in turn may contribute to the formation of harmful algal blooms. Here, we critically reviewed internal P loading in Canadian fresh waters to understand the geographic patterns and environmental drivers of this important process. From 43 publications, we consolidated 618 estimates of internal P loading from Canadian freshwater ponds, lakes, reservoirs, and coastal wetlands (n = 70). Expressed in terms of total P, short-term gross rates in sediment samples (L gross ) ranged from −27 to 54 mg·m −2 ·day −1 (n = 461), while long-term net rates in whole ecosystems (L net ) ranged from −1694 to 10 640 mg·m −2 ·year −1 (n = 157). The main environmental drivers of this variation were oxygen, pH, geology, and trophic state. Internal P loading tended to be higher during the open-water season and most prominent in small prairie lakes. Priorities for future research on internal P loading should include resolving methodological problems, assessing the relative importance of different mechanisms, examining the influence of anthropogenic activities, and quantifying rates in understudied ecosystems. Résumé :De nombreux processus physiques, chimiques et biologiques dans les écosystèmes d'eau douce mobilisent le phosphore (P), un élément nutritif, des sédiments, ce qui peut favoriser la formation de fleurs d'eau néfastes. Nous avons effectué un examen critique de l'apport interne de P dans les plans d'eau douce canadiens afin de comprendre les motifs de répartition géographique et les facteurs environnementaux qui influent sur cet important processus. À la lumière de 43 publications, nous avons colligé 618 estimations de l'apport interne de P d'étangs, de lacs, de réservoirs et de milieux humides littoraux d'eau douce canadiens (n = 70). Exprimés en termes de P total, les taux d'apport de P à court terme pour les échantillons de sédiments (L gross ) vont de −27 à 54 mg·m -2 ·jour -1 (n = 461), alors que les taux nets à long terme à l'échelle de l'écosystème (L net ) vont de −1694 à 10 640 mg·m -2 ·an -1 (n = 157). Les principaux facteurs environnementaux influant sur ces variations sont l'oxygène, le pH, la géologie et l'état trophique. L'apport interne de P tend à être plus élevé durant la période d'eau libre et le plus marqué dans les petits lacs de prairie. La priorité des travaux futurs sur l'apport interne de P devrait porter sur la résolution de problèmes méthodologiques, l'évaluation de l'importance relative de différents mécanismes, l'examen de l'influence des activités humaines et la quantification des taux dans les écosystèmes sous-étudiés. [Traduit par la Rédaction]

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“…Chemical modifiers such as aluminum, iron salts, nitrate, and Phoslock® have been studied in previous research (Hansen et al 2003;Liu et al 2009;Meis et al 2013). Aluminum and iron salts were able to inhibit the release of phosphorus (P) from sediment by combining with soluble reactive phosphorus (SRP) to form insoluble precipitants (Liu et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Effectiveness and Mode of Action of Calcium Nitrate and Phoslock® in Phosphorus Control in Contaminated Sediment, a Microcosm Study

Lin

Qiu²,

Yan³

et al. 2015

Water Air Soil Pollut

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Calcium nitrate and a lanthanum-modified bentonite (Phoslock®) were investigated for their ability to control the release of phosphorus from contaminated sediment. Their effectiveness and mode of action were assessed using microcosm experiments by monitoring the variation of physiochemical parameters and phosphorus and nitrogen species over time following the treatment for 66 days. Phoslock® was more effective reducing phosphorus in overlaying water and controlling its release from sediment. Calcium nitrate improved redox condition at the sediment-water interface and temporally reduce phosphorus in overlaying water but phosphorus level returned back in a long run. Phosphorus fractionation suggested that Phoslock® converted mobile phosphorus to more stable species while calcium nitrate increased the fractions of mobile phosphorus species.Phoslock® generally showed no effect on nitrogen species. Whereas calcium nitrate temporally increased nitrate, nitrite, and ammonium concentrations but their concentrations quickly reduced likely due to the denitrification process. Results suggested that Phoslock® can be more effective in controlling the release of phosphorus from sediment than calcium nitrate. However, calcium nitrate can improve the redox condition at the sediment-water interface, which may provide other benefits such as stimulating biodegradation.

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Effects of aluminum, iron, oxygen and nitrate additions on phosphorus release from the sediment of a Danish softwater lake

Cited by 93 publications

References 22 publications

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?

Internal phosphorus loading in Canadian fresh waters: a critical review and data analysis

Effectiveness and Mode of Action of Calcium Nitrate and Phoslock® in Phosphorus Control in Contaminated Sediment, a Microcosm Study

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