Eutrophication of aquatic ecosystems a new method for calculating the potential contributions of nitrogen and phosphorus

Seppälä, Jyri; Knuuttila, Seppo; Silvo, Kimmo

doi:10.1007/bf02978568

Cited by 64 publications

(44 citation statements)

References 15 publications

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“…The scope of previous studies on sitedependent aquatic eutrophication assessment (e.g. Seppälä et al (2004); Basset-Mens et al (2006); Gallego et al (2010) do not allow for direct comparison with the CFs obtained in the present study, but they generally support the conclusion that even country-specific CFs miss some of the local variation. Alternative spatial resolution for sitedependent eutrophication LCIA based on hydrological processes has been proposed by e.g.…”

Section: Spatial Variation Of Characterisation Factorscontrasting

confidence: 75%

“…The following equation based on the adapted version of Seppälä et al (2004) from Gallego et al (2010) was used:…”

Section: Characterisation Modelmentioning

confidence: 99%

“…The recently published ReCiPe 2017 methodology does not provide a characterisation model for marine eutrophication, due to lack of endpoint model (Huijbregts et al 2016). Some other studies have focused on deriving CFs for a specific area, such as Finland (Seppälä et al 2004);Brittany, France (Basset-Mens et al 2006) and Galicia, Spain (Gallego et al 2010). Their results indicate that sitedependent eutrophication assessment on a finer scale than that on country level would add valuable information to LCA, but those studies used data of variable quality and/or were limited in scope in terms of geography and nutrients.…”

Section: Introductionmentioning

confidence: 99%

“…Their results indicate that sitedependent eutrophication assessment on a finer scale than that on country level would add valuable information to LCA, but those studies used data of variable quality and/or were limited in scope in terms of geography and nutrients. Seppälä et al (2004) rely on expert judgement for determination of fate factors, Basset-Mens et al (2006) only derive fate factors for nitrate, and Gallego et al (2010) derive transport factors using data that was not specific for the region. Moreover, both Seppälä et al (2004) and Gallego et al (2010) derived one set of site-dependent CFs for the whole region, rather than several sets of CFs which could be used at different sites within the region.…”

Section: Introductionmentioning

confidence: 99%

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Spatially differentiated midpoint indicator for marine eutrophication of waterborne emissions in Sweden

Henryson

Hansson

Sundberg

2017

Int J Life Cycle Assess

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Purpose In life cycle assessment (LCA), eutrophication is commonly assessed using site-generic characterisation factors, despite being a site-dependent environmental impact. The purpose of this study was to improve the environmental relevance of marine eutrophication impact assessment in LCA, particularly regarding the impact assessment of waterborne nutrient emissions from Swedish agriculture. Methods Characterisation factors were derived using sitedependent data on nutrient transport for all agricultural soils in Sweden, divided into 968 catchment areas, and considering the Baltic Sea, the receiving marine compartment, as both nitrogen-and phosphorus-limited. These new characterisation factors were then applied to waterborne nutrient emissions from typical grass ley and spring barley cultivation in all catchments.Results and discussion The site-dependent marine eutrophication characterisation factors obtained for nutrient leaching from soils varied between 0.056 and 0.986 kg N eq /kg N and between 0 and 7.23 kg N eq /kg P among sites in Sweden. On applying the new characterisation factors to spring barley and grass ley cultivation at different sites in Sweden, the total marine eutrophication impact from waterborne nutrient emissions for these crops varied by up to two orders of magnitude between sites. This variation shows that site plays an important role in determining the actual impact of an emission, which means that site-dependent impact assessment could provide valuable information to life cycle assessments and increase the relevance of LCA as a tool for assessment of product-related eutrophication impacts. Conclusions Characterisation factors for marine eutrophication impact assessment at high spatial resolution, considering both the site-dependent fate of eutrophying compounds and specific nutrient limitations in the recipient waterbody, were developed for waterborne nutrient emissions from agriculture in Sweden. Application of the characterisation factors revealed variations in calculated impacts between sites in Sweden, highlighting the importance of spatial differentiation of characterisation modelling within the scale of the impact.

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Section: Spatial Variation Of Characterisation Factorscontrasting

confidence: 75%

“…The following equation based on the adapted version of Seppälä et al (2004) from Gallego et al (2010) was used:…”

Section: Characterisation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatially differentiated midpoint indicator for marine eutrophication of waterborne emissions in Sweden

Henryson

Hansson

Sundberg

2017

Int J Life Cycle Assess

View full text Add to dashboard Cite

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“…Generally, there are two types of oxygen depletion: one is the primary oxygen consumption caused by the release of organic matter; another is the secondary oxygen consumption that resulted from the potential algae degradation (Karrman and Jonsson 2001). Existing manuals of LCA mainly consider the secondary oxygen consumption as the scientific background of eutrophication, stressing the potential contribution of phosphorus (P) or nitrogen (N) to biomass production (Guinee 2001;Hauschild et al 2013;Seppala et al 2004;Seppala et al 2006), however, has not given much consideration to the primary oxygen consumption. With respect to WRI, especially various legislations or various policies, there would be great difference in emissions of organic matter, which will damage local aquatic environment directly and differently during the phase of primary oxygen consumption (Wang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Set organic pollution as an impact category to achieve more comprehensive evaluation of life cycle assessment in wastewater-related issues

Zhao

Yang

2017

Environ Sci Pollut Res

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For wastewater-related issues (WRI), life cycle assessment (LCA) is often used to evaluate environmental impacts and derive optimization strategies. To promote the application of LCA for WRI, it is critical to incorporate local impact of water pollutants. Organic pollution, a main type of water pollution, has not been given much consideration in current LCA systems. This paper investigates the necessity of setting a regionalized impact category to reflect the local impact of organic pollution. A case study is conducted concerning an upgraded wastewater treatment plant (WWTP) in China, which is assumed to meet different sewage control strategies. Chemical oxygen demand (COD) is selected to represent the organic pollution and treated as an individual impact category. CML 2002 is used to quantify the environmental impacts of different strategies. Results show that abnormal LCA results are generated with the traditional eutrophication impact category, and after the introduction of COD, more reasonable LCA results are obtained, making the entire comparison of different control strategies more meaningful and compelling. Moreover, BEES, Ecovalue 08, and Chinese factors are adopted here as different weighting methods. Different weighting results exhibited various trade-offs for the increasingly strict control strategies; the results of BEES and Ecovalue08 underlined the potential environmental burden, but the results of Chinese factors only emphasized the local environmental improvement. It is concluded that setting regionalized impact category for organic pollution can make LCA results more reasonable in wastewater treatment, especially in evaluating Chinese cases because of the serious water pollution caused by large quantities of COD emission.

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Wirkungsabschätzung

Klöpffer

Grahl²

2009

Ökobilanz (LCA)

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Eutrophication of aquatic ecosystems a new method for calculating the potential contributions of nitrogen and phosphorus

Cited by 64 publications

References 15 publications

Spatially differentiated midpoint indicator for marine eutrophication of waterborne emissions in Sweden

Spatially differentiated midpoint indicator for marine eutrophication of waterborne emissions in Sweden

Set organic pollution as an impact category to achieve more comprehensive evaluation of life cycle assessment in wastewater-related issues

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