Fractionation of phosphorus biowastes: Characterisation and environmental risk

García‐Albacete, Marta; Martín, Azucena; Cartagena, M. C.

doi:10.1016/j.wasman.2012.02.003

Cited by 86 publications

(57 citation statements)

References 27 publications

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“…Sharpley and Moyer 2000;Ylivainio et al 2008;García-Albacete et al 2012;Nanzer et al 2014). In brief, labile P, Fe-/Al-bound P and stable Ca phosphates are distinguished when P is sequentially extracted from samples using solvents with different pH and increasing extraction capacity.…”

Section: Introductionmentioning

confidence: 99%

Waste products as alternative phosphorus fertilisers part I: inorganic P species affect fertilisation effects depending on soil pH

Brod

Øgaard

Hansen

et al. 2015

Nutr Cycl Agroecosyst

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One of the bottlenecks to efficient phosphorus (P) recycling is limited understanding of the relationships between inorganic P species in waste products and their P fertilisation effects. In this study, we characterised inorganic P species in seven waste products (two biomass ashes, meat bone meal, fish sludge, catering waste and two food waste-based digestate products) and two manure products (dairy and chicken manure) by: (1) Sequential chemical fractionation, (2) X-ray powder diffraction and (3) solid-state 31 P MAS-NMR spectroscopy. We then used the characterisation data to explain the results of a bioassay studying the fertilisation effects of waste and manure products after application to a nutrientdeficient model soil that was limed to two pH levels (approximately pH 5.5 and 6.9 at pH level 1 and 2), with ryegrass (Lolium multiflorum) as the experimental crop. The P in waste products was mainly present as a complex mixture of inorganic P species, predominantly Ca phosphates with differing solubility. Fertilisation effects were largely explained by sequential fractionation data, with a positive relationship between apparent P use efficiency and the H 2 Osoluble inorganic P fraction at pH level 1 (R 2 = 0.52) and a negative relationship between apparent P use efficiency and the HCl-soluble inorganic P fraction at pH level 2 (R 2 = 0.66). X-ray powder diffraction and solid-state 31 P MAS-NMR spectroscopy confirmed the sequential fractionation data, but provided little additional information.

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Section: Introductionmentioning

confidence: 99%

Waste products as alternative phosphorus fertilisers part I: inorganic P species affect fertilisation effects depending on soil pH

Brod

Øgaard

Hansen

et al. 2015

Nutr Cycl Agroecosyst

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show abstract

“…Large differences are observed in the amounts of TP in the samples (SMT protocol, Tab. ), according to others authors , with concentrations from 6.6 g kg −1 for the compost to 42.0 g kg −1 for the fresh sludge. The inorganic P (IP) percentage was higher than that of OP for all of the organic wastes, with percentages falling between 60 and 93%.…”

Section: Resultsmentioning

confidence: 70%

Phosphorus Runoff Losses After Application of Organic Waste

García‐Albacete

Requejo²,

Cartagena

2016

CLEAN Soil Air Water

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In this work, phosphorus (P) losses due to runoff were evaluated to understand the factors influencing the processes by which this element is lost. The forms of P present in organic wastes were studied using information provided by three P fractionation methods. All three methods contributed successfully to the understanding of the P forms present in wastes. However, it is difficult to compare the results from each to one another, as each protocol employs different extraction methods and times. In parallel, simulated rain systems were developed according to the "National Phosphorus Research Project" (2001) to characterize the P lost in the surface runoff generated. Experiments were performed on soil dosed with organic wastes applied both superficially and by mixing with the soil, and significant differences were found in the amounts of P determined to be in the runoff water of each, in both solution and particulate forms. Losses in experiments in which organic waste was applied to the soil surface were larger than those in experiments in which the samples mixed. In general, losses during the first rainfall event were the highest and particulate P forms predominated over dissolved forms. In mixed samples, significant differences in results were found depending on the type of waste used. Finally, a positive relationship was found between various P forms determined by sequential fractionation protocols and P losses by runoff.

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“…Although the air release value time increases from 1.7 to 4.9 min after 10,000 h, it is still below the 10-min requirement. Element analysis of the in-service oil indicated the presence of some metals, such as Zn, Cu, Fe and Na, which are mainly attributed to mechanical wear and external pollutants [24].…”

Section: Discussionmentioning

confidence: 99%

Composition and degradation of turbine oil sludge

Liu¹,

Wang²,

Zhang

et al. 2016

J Therm Anal Calorim

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Sludge is an inevitable by-product of turbine oil during the operation of lubricating turbines. However, there are few reports of the detailed analytical results of the sludge. In addition, no global specification exists to evaluate the sludge formation from turbine oils. Hence, it is critical to analyze the contents of the sludge. In this study, we investigate both fresh and in-service (contains sludge) turbine oil based on ASTM standards. In-service turbine oil was first washed by petroleum ether to obtain the sludge and then characterized by FTIR, SEM, TG and EDAX. We found that the main compositions of sludge were C, O and N, while metals were \4 mass %. The analytical results show that antioxidant, defoamer, antirust and demulsifier are possible origins for the formation of sludge, which would be beneficial to decrease the sludge for the formulation of turbine oil.

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Fractionation of phosphorus biowastes: Characterisation and environmental risk

Cited by 86 publications

References 27 publications

Waste products as alternative phosphorus fertilisers part I: inorganic P species affect fertilisation effects depending on soil pH

Waste products as alternative phosphorus fertilisers part I: inorganic P species affect fertilisation effects depending on soil pH

Phosphorus Runoff Losses After Application of Organic Waste

Composition and degradation of turbine oil sludge

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