Complexation of Copper by Sewage Sludge-derived Dissolved Organic Matter: Effects on Soil Sorption Behaviour and Plant Uptake

Ashworth, Daniel J.; Alloway, B. J.

doi:10.1007/s11270-006-9331-7

Cited by 58 publications

(26 citation statements)

References 30 publications

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“…The mechanism of copper corrosion in an aqueous medium is a complex one involving formation of a large number of by-products, including cuprous oxide and cupric hydroxide that form a protective scale on a copper surface (Kear et al 2004). The extent of copper complexation in water is affected by a broad range of variables, including pH and ionic strength as well as specific inorganic ligands present in solution (Ashworth and Alloway 2007). Inorganic ions have been observed to have a lower potential to form complexes with copper ions as compared to organic matter (Bryan et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Inactivation and sub-lethal injury of Escherichia coli in a copper water storage vessel: effect of inorganic and organic constituents

Sharan

Chhibber

Attri

et al. 2010

Antonie van Leeuwenhoek

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This study provides information on the effects of inorganic and organic constituents on inactivation and sub-lethal injury of Escherichia coli in water stored in a copper vessel. E. coli suspensions were stored for up to 24 h in copper vessels containing one of the following dissolved constituents at 1 g/l: salts of inorganic ions, carbohydrates, proteins and complex natural organic mixtures. Samples were surface plated onto (i) nutrient agar, incubated under standard aerobic conditions to provide conventional counts for uninjured bacteria count and onto (ii) nutrient agar plates with 0.5 g/l sodium pyruvate incubated under anaerobic conditions to enumerate sub-lethally injured (oxygen-sensitive) bacteria alongside their healthy counterparts. The concentration of dissolved copper in the stored water was determined using atomic absorption spectrophotometry. The addition of chloride salts resulted in a faster inactivation of E. coli compared to pure water with no dissolved additives, irrespective of the counterion. In contrast, a slower inactivation was observed in the presence of Na(2)SO(4), NaNO(3) and NaNO(2) when compared to NaCl. Addition of the carbohydrates glucose, lactose and starch gave broadly similar results to those obtained using unsupplemented water. However, the addition of amino acids, proteins, humic acid or complex organic mixtures caused a dramatic decrease in inactivation of E. coli, with evidence of a greater number of sub-lethally injured bacteria than was seen with other added constituents. The amount of copper was highest in stored water containing amino acids and complex organic constituents, with the slow inactivation most likely to be due to complex formation between leached copper and these organic constituents. The present study clearly demonstrates that water composition, particularly natural organic constituents, has a substantial impact on the antibacterial effectiveness and dissolved copper concentration of water stored in copper vessels and that both aspects will need to be considered in terms of their impact on the practical use of copper-based systems for small-scale water treatment.

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Section: Discussionmentioning

confidence: 99%

Inactivation and sub-lethal injury of Escherichia coli in a copper water storage vessel: effect of inorganic and organic constituents

Sharan

Chhibber

Attri

et al. 2010

Antonie van Leeuwenhoek

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“…Cu complexation with soluble low-molecular organic matter obtained from sewage sludge, occurred between pH 4 and pH 7.5 and peaked at pH 6.5. Addition of soluble organic matter from liquid sewage sludge, resulted in the release of soil adsorbed Cu from a contaminated soil of 527 mg Cu/kg [21].…”

Section: Iron and Metalsmentioning

confidence: 99%

Vertical Migrations in an Alpine Grassland Cambisol after Long-Term Sewage Sludge Application

Sager

2017

Ecological Chemistry and Engineering S

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Differences between vertical mobilities of nutrient and trace elements within a long-term sludge-treated and an adjacent untreated Alpine grassland cambisol were investigated by column experiments. The site had been intensely fertilized with urban sewage sludge for 10 years of 7.5 Mg/ha annually, whereas an adjacent site had been left untreated. A model column experiment was set up to investigate changes of permeabilities and trace element retentions at 0-20 cm and 20-60 cm layers thereof. Elution was performed with de-ionized water at amounts of expected rainfall at the sampling site (1000 mm), as well as with equal volume of manure after biogas production. Long-term sludge treatment increased organic carbon, formation of ammonium and nitrate, and increased vertical mobility of K, P, S, Cu, and Fe, but also slightly higher (below 10-fold) for Na, Sr, Ba, Ni and V. Additional application of manure was of minor effect, mainly upon nitrate formation, and upon leaching of Fe, Mn as well as Fe/Mn proportion. Prior addition of FeCl2 to the manure in order to increase sulfide precipitation, mainly affected the output of ammonia, but hardly the cations or anions (e.g. P) investigated.

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“…As a result, a series of new interesting perspectives on ISEs application in environmental analysis has been identified [82]. For research concerning trace elements in soils, ion-selective electrodes are currently mainly used to measure free metal ion (mainly Cu 2þ ) activities for the assessment of the complexation of trace elements by organic matter [83][84][85][86], their sorption by clays [87], their mobility, availability and toxicity in soils [88][89][90] and their chemical behaviour in rhizosphere microenvironments [91]. They are also frequently used in procedures for validation of speciation models [92].…”

Section: Ion-selective Electrodesmentioning

confidence: 99%

Fractionation and Speciation of Trace Elements in Soil Solution

Laing

2010

Trace Elements in Soils

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Complexation of Copper by Sewage Sludge-derived Dissolved Organic Matter: Effects on Soil Sorption Behaviour and Plant Uptake

Cited by 58 publications

References 30 publications

Inactivation and sub-lethal injury of Escherichia coli in a copper water storage vessel: effect of inorganic and organic constituents

Inactivation and sub-lethal injury of Escherichia coli in a copper water storage vessel: effect of inorganic and organic constituents

Vertical Migrations in an Alpine Grassland Cambisol after Long-Term Sewage Sludge Application

Fractionation and Speciation of Trace Elements in Soil Solution

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