References of "Journal of Cleaner Production"
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See detailPositioning Vancouver through urban sustainability strategies? The Greenest City 2020 Action Plan
Affolderbach, Julia, ; Schulz, Christian UL

in Journal of Cleaner Production (2017), 164

Cities around the world have launched greening initiatives to reduce their carbon footprint and to become more sustainable. At the same time, they have also sought to use these initiatives to position ... [more ▼]

Cities around the world have launched greening initiatives to reduce their carbon footprint and to become more sustainable. At the same time, they have also sought to use these initiatives to position themselves as climate change leaders and green champions. This paper focuses on the City of Vancouver's Greenest City 2020 Action Plan as urban policy strategy to reduce carbon emissions. Based on interviews with actors and experts involved in the development and implementation of the plan, the paper evaluates the role green leadership aspirations play in shaping urban climate change policy and how policy makers and stakeholders use policy to position the city and its greening initiatives locally and globally. In particular, it analyzes the role of competitive positioning and green leadership in sustainability initiatives and change within and beyond urban boundaries. While leadership suggests increased buy-in of residents and those involved in the implementation of the strategy and multiplication effects through learning within the region and between (peer) cities, it can also pose challenges as the interest in meeting leadership claims can impede more radical change through specific targets and implementation strategies and challenge other sustainability objectives. [less ▲]

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See detailEnergy saving in wastewater treatment plants: A plant-generic cooperative decision support system
Torregrossa, Dario; Hernández-Sancho; Hansen, Joachim UL et al

in Journal of Cleaner Production (2017)

In Europe, the analysis of Waste Water Treatment Plants (WWTPs) shows a significant energy efficiency potential (up to 25%). Optimistically, plant managers assess their plant efficiency once or twice per ... [more ▼]

In Europe, the analysis of Waste Water Treatment Plants (WWTPs) shows a significant energy efficiency potential (up to 25%). Optimistically, plant managers assess their plant efficiency once or twice per year. Consequently, the time gap between an inefficiency and its detection produces avoidable operational costs. Although the installation of multiple on-line sensors can provide detailed energy information, for a human operator it is unrealistic to analyse the produced data in a satisfactory time-scale. This paper proposes a cooperative tool for energy saving that remotely accesses and evaluates WWTP databases to produce daily energy assessment reports. The novelty of this decision support tool lies in the original combination of: key performance indicators, daily benchmarking, expert knowledge, scenario analysis, fuzzy logic and shared knowledge. In this paper, the Shared Knowledge Decision Support System (SK-DSS) concept is presented and the methodology demonstrated and validated on the energy consumption of biological aeration systems. [less ▲]

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See detailLearning through evaluation e A tentative evaluative scheme for sustainability transition experiments
Luederitz, Christopher; Schäpke, Niko; Wiek, Arnim et al

in Journal of Cleaner Production (2016), xxx

Transitions towards sustainability are urgently needed to address the interconnected challenges of economic development, ecological integrity, and social justice, from local to global scales. Around the ... [more ▼]

Transitions towards sustainability are urgently needed to address the interconnected challenges of economic development, ecological integrity, and social justice, from local to global scales. Around the world, collaborative science-society initiatives are forming to conduct experiments in support of sustainability transitions. Such experiments, if carefully designed, provide significant learning opportunities for making progress on transition efforts. Yet, there is no broadly applicable evaluative scheme available to capture this critical information across a large number of cases, and to guide the design of transition experiments. To address this gap, the article develops such a scheme, in a tentative form, drawing on evaluative research and sustainability transitions scholarship, alongside insights from empirical cases. We critically discuss the scheme's key features of being generic, comprehensive, operational, and formative. Furthermore, we invite scholars and practitioners to apply, reflect and further develop the proposed tentative scheme e making evaluation and experiments objects of learning. [less ▲]

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See detailLife cycle assessment and data envelopment analysis approach for the selection of building components according to their environmental impact efficiency: a case study for external walls
Iribarren, Diego; Marvuglia, Antonino; Hild, Paula UL et al

in Journal of Cleaner Production (2015), 87

Environmental criteria have to be taken into account when it comes to selecting a specific building component among a set of candidates with the same function. This article presents a methodological ... [more ▼]

Environmental criteria have to be taken into account when it comes to selecting a specific building component among a set of candidates with the same function. This article presents a methodological approach – based on both Life Cycle Assessment (LCA) and Data Envelopment Analysis (DEA) – for the selection of building components according to their environmental impact efficiency. A three-step LCA + DEA approach is proposed and tested through a case study for 175 external walls. The three steps of this approach involve data collection, life cycle impact assessment, and DEA of the sample of building components using environmental impacts as DEA inputs. Overall, from the availability of multiple data on the material and energy flows of each building component, the method provides decision makers with eco-efficiency scores and environmental benchmarks. A cautious definition of the set of candidates is critical, as relative efficiency scores are calculated. Data availability and functional homogeneity regarding the building components evaluated are the key requirements for the general use of the method. The three-step LCA + DEA approach proposed is proven to be a useful method to enhance decision making and environmental benchmarking in the building sector. [less ▲]

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See detailUsing atmospheric plasma to design multilayer film from polylactic acid and thermoplastic starch: a screening Life Cycle Assessment
Benetto, Enrico; Jury, Collin; Igor, Elorri et al

in Journal of Cleaner Production (2015), 87

The accumulation of plastic waste and the increasing awareness of the environmental implications and technical challenges associated to their treatment and recycling have led to a constant increase of ... [more ▼]

The accumulation of plastic waste and the increasing awareness of the environmental implications and technical challenges associated to their treatment and recycling have led to a constant increase of biopolymers market in the 90's. Polylactic acid (PLA) is one of the most promising biodegradable plastics, showing a wide range of potential applications, e.g. in the packaging industry. However, the high production costs hamper its further development. The use of PLA in multilayer (ML) films is a potential opportunity to reduce the production costs. This study tackled the ecodesign of a clam shell for packaging applications based on a novel ML film made of PLA and thermoplastic starch (TPS), evaluating the environmental performance of different design concepts through Life Cycle Assessment (LCA). In order to assure proper compatibility between PLA and TPS, the use of dielectric barrier discharge (dbd) plasma technology at atmospheric pressure to increase the hydrophilicity of PLA was investigated. The results have highlighted the significant contribution of plasma treatment to the overall environmental impact of the ML film and the need for further optimisation. Despite the contribution of the PLA end-of-life phase to the overall environmental impact of the ML clam shell is low, the methodological approach to end-of-life can have a significant influence on the LCA results. This seems to be due to the low PLA recycling and recovery rate assumed, which is nevertheless realistic. The promotion of high recovery and recycling rates should therefore be a priority in the future. At the current development stage, even the most improved ML clam shell concept obtained using atmospheric plasma technology is not an environmentally sound alternative to pure PLA clam shell, although it is likely to be a cost-effective option. A good compromise between cost and environmental constrains to be further investigated could be to increase further the proportion of PLA in the ML, by improving the water adsorption capability of TPS through, e.g., the addition of a phthalate free plasticiser. [less ▲]

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See detailSimulated and experimental results on heat recovery from hot steel beams in a cooling bed applying modified solar absorbers
Tarrés Font, Joana UL; Maas, Stefan UL; Scholzen, Frank UL et al

in Journal of Cleaner Production (2014), (68), 261-271

In recent years, the steel industry has undertaken efforts to increase energy efficiency by reducing energy consumption and recover otherwise lost heat. About 60% of the energy consumed in a steel plant ... [more ▼]

In recent years, the steel industry has undertaken efforts to increase energy efficiency by reducing energy consumption and recover otherwise lost heat. About 60% of the energy consumed in a steel plant is lost in cooling beds where the hot steel beams are cooled down by natural convection and radiation. In this paper, the potential of heat recovery by radiation in a cooling bed was determined. Firstly, numerical simulations of the heat flux were done and validated with experimental measures. Secondly, a pilot test to recover the heat with modified solar absorbers was installed at the side of the cooling bed. The standard solar panels were painted with high absorption paint in the wavelength range of the hot beams. The results showed that up to 1 kW/m2 could be recovered with a temperature of 70°C at the side of the cooling bed, with a thermal efficiency of approximately 40%. As the experimental results were promising, further research is suggested to find an adequate selective coating and glazing. This would maximize the absorption at the wavelength range of the hot beams and minimize the emissivity at operational temperature of the absorber (100°C). Additionally, it would be of interest to find the optimum position for the absorbers in the cooling bed, which maximizes the heat recovery and does not interfere in the production process. [less ▲]

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