Extended Exergy Accounting (EEA) analysis of municipal wastewater treatment – Determination of environmental remediation cost for municipal wastewater

Seçkin, Candeniz; Bayülken, Ahmet

doi:10.1016/j.apenergy.2013.04.042

Cited by 27 publications

(6 citation statements)

References 28 publications

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“…nitrous oxide, and methane by Seckin et al [21]. The extended exergy cost values of municipal wastewater and sludge abatement are also known for Turkey in 2006 [8].…”

Section: Eea Methodologies: Review and Synthesismentioning

confidence: 99%

“…The environmental remediation cost values of carbon monoxide, mono-nitrogen oxides, and sulphur dioxide were published by Dai et al (2014) [20] while carbon dioxide, nitrous oxide and methane were studied by Seckin et al (2013) [21]. The extended exergy cost values of municipal wastewater and sludge abatement were obtained for Turkey in 2006 [8].…”

Section: Environmental Impactmentioning

confidence: 99%

“…While some of the studies developed using the EEA methodology have the aim of evaluating the EEC of a product or a service [7,8], others focus on quantifying the societal efficiency of a process [9][10][11]. This extended exergy efficiency (EEE), measured by the ratio between the exergy of the output fluxes and the exergy in the inputs, can have different meanings.…”

Section: Introductionmentioning

confidence: 99%

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The Way Forward in Quantifying Extended Exergy Efficiency

2018

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Extended exergy accounting (EEA) is a methodology which estimates the extended exergy cost (EEC) of a product or a service or the extended exergy efficiency (EEE) of a country or economic sector taking into account materials, energy, labour, capital, and environmental impact. The use of EEA results for policy or planning purposes has been hampered by: (1) the lack of data to quantify the EEC of most of the inputs, making it almost impossible to quantify the EEC of a product or service and (2) the lack of a conceptual framework to quantify in a consistent way the exergy of labour and capital. In this paper, we make a review of past studies to identify, synthesize, and discuss the different EEA methods. We identified 3 different EEA methods, that we further compare using the Portuguese Agriculture, Forestry, and Fishery (AFF) sector from 2000 to 2012. The equivalent exergies of labour and capital estimated for the AFF sector vary widely among the three EEA methodologies. We propose and test a new EEA methodology to estimate EEE which accounts for these fluxes in a more restricted scope but more consistently and that includes the Environmental Benefit (EB) that represents the capability of the forestry to capture carbon dioxide. Results show that the EEE of the Portuguese AFF sector has increased by 32% from 2000 to 2012.

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“…nitrous oxide, and methane by Seckin et al [21]. The extended exergy cost values of municipal wastewater and sludge abatement are also known for Turkey in 2006 [8].…”

Section: Eea Methodologies: Review and Synthesismentioning

confidence: 99%

Section: Environmental Impactmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Way Forward in Quantifying Extended Exergy Efficiency

2018

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“…The relationships between resources, and the relationships between the resource and the environment are ignored. The second group is conducted on the global scale of the terrestrial ecosystem, and the methods being used include the cumulative exergy [31,32], extended exergy [13,[33][34][35] and life cycle exergy analysis [12,36,37]. In these models, not only the traditional exergy content, but also all exergy inputs in the economic system for producing the resource and all exergy costs for restoring potential contamination in the environmental system, are accounted as the total exergy of the resource.…”

Section: Introductionmentioning

confidence: 99%

Renewability and sustainability of biogas system: Cosmic exergy based assessment for a case in China

Chen

Yang

et al. 2015

Renewable and Sustainable Energy Reviews

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“…The byproducts of wastewater treatment are methane gas and sludge cake (used as a fertiliser), which can be used to offset the exergy requirements of the process. Seckin and Bayulken [34] calculated the exergy required to treat municipal wastewater for the Turkish household sector. The treatment process used was anaerobic digestion, which is suitable for treating water effluent with high organic content.…”

Section: Exergy Modelling Of Water Flowsmentioning

confidence: 99%

Resource accounting in factories and the energy-water nexus

Khattak

Greenough

2017

Int J Adv Manuf Technol

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A manufacturing system comprises production processes and building services, both of which are supplied by different energy carriers as well as raw materials and water. These resources interact according to complex relationships and are converted into products for sale and waste flows. Holistic resource accounting allows the analyst to consider the dynamic relationships between these components, including the strong interdependence between energy and water, which has been called the energy-water nexus. Exergy analysis is a method that accounts for mass and both the quantity and quality of energy, while allowing analysis on a common basis, and for this reason, it is used increasingly to analyse resource consumption in manufacturing systems; however, it has rarely been used to consider water flows alongside energy and material flows. The main contribution of this paper is the presentation of modelling water flows in terms of exergy in the context of sustainable manufacturing. Using this technique in combination with previously developed exergy-based methods, the result is a truly holistic resource accounting method for factories based on exergy analysis that incorporates water flows. The method is illustrated using a case study of a food factory in which a 4.1% reduction in resource use is shown to be possible by employing anaerobic digester in an effluent water treatment process. The benefits of this technology option would have been underestimated compared to the benefits of waste heat capture if an analysis based on mass and energy balances alone had been used. The scientific value of this paper is the demonstration of the relatively high exergy content of effluent flows, which should therefore be regarded as potentially valuable resources. The analytical method presented is therefore of value to a wide range of industries beyond the food industry.

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Extended Exergy Accounting (EEA) analysis of municipal wastewater treatment – Determination of environmental remediation cost for municipal wastewater

Cited by 27 publications

References 28 publications

The Way Forward in Quantifying Extended Exergy Efficiency

The Way Forward in Quantifying Extended Exergy Efficiency

Renewability and sustainability of biogas system: Cosmic exergy based assessment for a case in China

Resource accounting in factories and the energy-water nexus

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