Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Farm-scale bio-power-to-methane: Comparative analyses of economic and environmental feasibility
    Bekkering, Jan ; Zwart, Kor ; Martinus, Gerard ; Langerak, Jort ; Tideman, Jeroen ; Meij, Tineke van der; Alberts, Kees ; Steenis, Machiel van; Nap, Jan Peter - \ 2020
    International Journal of Energy Research 44 (2020)3. - ISSN 0363-907X - p. 2264 - 2277.
    bio-methanation - biogas - electrolysis - energy efficiency - greenhouse gas emission saving - supply chain optimisation

    Power-to-gas technologies are considered to be part of the future energy system, but their viability and applicability need to be assessed. Therefore, models for the viability of farm-scale bio-power-to-methane supply chains to produce green gas were analysed in terms of levelised cost of energy, energy efficiency and saving of greenhouse gas emission. In bio-power-to-methane, hydrogen from electrolysis driven by surplus renewable electricity and carbon dioxide from biogas are converted to methane by microbes in an ex situ trickle-bed reactor. Such bio-methanation could replace the current upgrading of biogas to green gas with membrane technology. Four scenarios were compared: a reference scenario without bio-methanation (A), bio-methanation (B), bio-methanation combined with membrane upgrading (C) and the latter with use of renewable energy only (all-green; D). The reference scenario (A) has the lowest costs for green gas production, but the bio-methanation scenarios (B-D) have higher energy efficiencies and environmental benefits. The higher costs of the bio-methanation scenarios are largely due to electrolysis, whereas the environmental benefits are due to the use of renewable electricity. Only the all-green scenario (D) meets the 2026 EU goal of 80% reduction of greenhouse gas emissions, but it would require a CO2 price of 200 € t−1 to achieve the levelised cost of energy of 65 €ct Nm−3 of the reference scenario. Inclusion of the intermittency of renewable energy in the scenarios substantially increases the costs. Further greening of the bio-methanation supply chain and how intermittency is best taken into account need further investigation.

    Towards Airborne Thermography via Low-Cost Thermopile Infrared Sensors
    Pereira Valente, J.R. ; Roldán, Juan Jesús ; Garzón, Mario ; Barrientos, Antonio - \ 2019
    Drones 3 (2019)1. - ISSN 2504-446X
    unmanned aerial vehicle - temperature tracking - IR temperature sensors - aerial remote sensing - energy efficiency
    This paper presents a novel tool capable of collecting thermal signatures inside a building by using low-cost IR temperature sensors mounted on-board an aerial platform. The proposed system aims to facilitate the detection of heat loss inside buildings, which is a key aspect for improving energy efficiency in large commercial or industrial buildings. Current detection systems usually require manual labor as well as the use of expensive instrumentation. The proposed system on the other hand, relies on the use of a small unmanned aerial vehicle carrying low-cost thermopile IR sensors. Moreover, the system delivers a fast temperature sensing scheme and it provides coverage to inaccessible areas, thus overcoming the limitations of current mobile platforms which use ground robots. Different experiments were carried out in order to assess the behavior of the sensors as well as to validate the full system. Moreover, the hypothesis that thermopile IR sensors can be used to track temperature signature on-the-fly is validated experimentally with the use of the proposed system over different targets.
    National climate change mitigation legislation, strategy and targets: a global update
    Tudorica-Iacobuta, G. ; Dubash, Navroz K. ; Upadhyaya, Prabhat ; Deribe, Mekdelawit ; Hoehne, N.E. - \ 2018
    Wageningen University & Research
    national policies - domestic policy instruments - climate policy - energy efficiency - renewable energy policy
    Global climate change governance has changed substantially in the last decade, with a shift in focus from negotiating globally agreed greenhouse gas (GHG) reduction targets to nationally determined contributions, as enshrined in the 2015 Paris Agreement. This paper analyses trends in adoption of national climate legislation and strategies, GHG targets, and renewable and energy efficiency targets in almost all UNFCCC Parties, focusing on the period from 2007 to 2017. The uniqueness and added value of this paper reside in its broad sweep of countries, the more than decade-long coverage and the use of objective metrics rather than normative judgements. Key results show that national climate legislation and strategies witnessed a strong increase in the first half of the assessed decade, likely due to the political lead up to the Copenhagen Climate Conference in 2009, but have somewhat stagnated in recent years, currently covering 69% of global GHG emissions (almost 50% of countries). In comparison, the coverage of GHG targets increased considerably in the run up to adoption of the Paris Agreement and 93% of global GHG emissions are currently covered by such targets. Renewable energy targets saw a steady spread, with 79% of the global GHG emissions covered in 2017 compared to 45% in 2007, with a steep increase in developing countries. Key policy insightsThe number of countries that have national legislation and strategies in place increased strongly up to 2012, but the increase has levelled off in recent years, now covering 69% of global emissions by 2017 (49% of countries and 76% of global population).Economy-wide GHG reduction targets witnessed a strong increase in the build up to 2015 and are adopted by countries covering 93% of global GHG emissions (81% not counting USA) and 91% of global population (86% not counting USA) in 2017.Renewable energy targets saw a steady increase throughout the last decade with coverage of countries in 2017 comparable to that of GHG targets.Key shifts in national measures coincide with landmark international events – an increase in legislation and strategy in the build-up to the Copenhagen Climate Conference and an increase in targets around the Paris Agreement – emphasizing the importance of the international process to maintaining national momentum.
    National climate change mitigation legislation, strategy and targets : a global update
    Iacobuta, Gabriela ; Dubash, Navroz K. ; Upadhyaya, Prabhat ; Deribe, Mekdelawit ; Höhne, Niklas - \ 2018
    Climate Policy 18 (2018)9. - ISSN 1469-3062 - p. 1114 - 1132.
    climate policy - domestic policy instruments - energy efficiency - National policies - renewable energy policy

    Global climate change governance has changed substantially in the last decade, with a shift in focus from negotiating globally agreed greenhouse gas (GHG) reduction targets to nationally determined contributions, as enshrined in the 2015 Paris Agreement. This paper analyses trends in adoption of national climate legislation and strategies, GHG targets, and renewable and energy efficiency targets in almost all UNFCCC Parties, focusing on the period from 2007 to 2017. The uniqueness and added value of this paper reside in its broad sweep of countries, the more than decade-long coverage and the use of objective metrics rather than normative judgements. Key results show that national climate legislation and strategies witnessed a strong increase in the first half of the assessed decade, likely due to the political lead up to the Copenhagen Climate Conference in 2009, but have somewhat stagnated in recent years, currently covering 69% of global GHG emissions (almost 50% of countries). In comparison, the coverage of GHG targets increased considerably in the run up to adoption of the Paris Agreement and 93% of global GHG emissions are currently covered by such targets. Renewable energy targets saw a steady spread, with 79% of the global GHG emissions covered in 2017 compared to 45% in 2007, with a steep increase in developing countries. Key policy insightsThe number of countries that have national legislation and strategies in place increased strongly up to 2012, but the increase has levelled off in recent years, now covering 69% of global emissions by 2017 (49% of countries and 76% of global population).Economy-wide GHG reduction targets witnessed a strong increase in the build up to 2015 and are adopted by countries covering 93% of global GHG emissions (81% not counting USA) and 91% of global population (86% not counting USA) in 2017.Renewable energy targets saw a steady increase throughout the last decade with coverage of countries in 2017 comparable to that of GHG targets.Key shifts in national measures coincide with landmark international events – an increase in legislation and strategy in the build-up to the Copenhagen Climate Conference and an increase in targets around the Paris Agreement – emphasizing the importance of the international process to maintaining national momentum.

    Performance of an environmentally benign acid base flow battery at high energy density
    Egmond, W.J. van; Saakes, M. ; Noor, I. ; Porada, S. ; Buisman, C.J.N. ; Hamelers, H.V.M. - \ 2018
    International Journal of Energy Research 42 (2018)4. - ISSN 0363-907X - p. 1524 - 1535.
    acid base flow battery - bipolar membrane - co-ion transport - energy efficiency - ion exchange membranes - renewable energy storage - sustainable materials
    An increasing fraction of energy is generated by intermittent sources such as wind and sun. A straightforward solution to keep the electricity grid reliable is the connection of large-scale electricity storage to this grid. Current battery storage technologies, while providing promising energy and power densities, suffer from a large environmental footprint, safety issues, and technological challenges. In this paper, the acid base flow battery is re-established as an environmental friendly means of storing electricity using electrolyte consisting of NaCl salt. To achieve a high specific energy, we have performed charge and discharge cycles over the entire pH range (0–14) at several current densities. We demonstrate stable performance at high energy density (2.9 Wh L−1). Main energy dissipation occurs by unwanted proton and hydroxyl ion transport and leads to low coulombic efficiencies (13%–27%).
    Resource-efficient supply chains: a research framework, literature review and research agenda
    Matopoulos, A. ; Barros, A.C. ; Vorst, J.G.A.J. van der - \ 2015
    Supply Chain Management : an International Journal 20 (2015)2. - ISSN 1359-8546 - p. 218 - 236.
    greenhouse-gas emissions - life-cycle assessment - food-production systems - carbon footprint - land-use - environmental assessment - conceptual-framework - manufacturing firms - energy efficiency - complexity theory
    Purpose – The study aims to define a research agenda for creating resource-efficient supply chains (RESCs) by identifying and analysing their key characteristics as well as future research opportunities. Design/methodology/approach – We follow a systematic review method to analyse the literature and to understand RESC, taking a substantive theory approach. Our approach is grounded in a specific domain, the agri-food sector, because it is an intensive user of an extensive range of resources. Findings – The review shows that works of literature has looked at the use of resources primarily from the environmental impact perspective. There is a need to explore whether or not and how logistics/supply chain decisions will affect the overall configuration of future food supply chains in an era of resource scarcity and depletion and what the trade-offs will be. Research imitations/implications – The paper proposes an agenda for future research in the area of RESC. The framework proposed along with the key characteristics identified for RESC can be applied to other sectors. Practical implications – Our research should facilitate further understanding of the implications and trade-offs of supply chain decisions taken on the use of resources by supply chain managers. Originality/value – The paper explores the interaction between supply chains and natural resources and defines the key characteristics of RESC. Keywords Systematic literature review, Logistics and supply chain design decisions, Natural resource-based view, Resource scarcity, Resource-efficiency, Sustainable supply chains
    Extending environmental management beyond the firm boundaries: An empirical study of Dutch food and beverage firms
    Grekova, E. ; Bremmers, H.J. ; Trienekens, J.H. ; Kemp, R.G.M. ; Omta, S.W.F. - \ 2014
    International Journal of Production Economics 152 (2014). - ISSN 0925-5273 - p. 174 - 187.
    supply-chain management - resource-based view - institutional pressures - energy efficiency - performance - green - model - industry - drivers - system
    Consumer demand for environmental sustainability and for affordable prices calls for cooperation and information exchange in food chains to reduce joint environmental impact, known as externally-oriented environmental management (E-EM). E-EM is increasingly regarded as a management tool to simultaneously improve environmental, operational, and business performance. Understanding the factors that influence managers to develop E-EM helps to design environmentally and economically sustainable food chains. The prior research regarding these factors is not exhaustive and demanded a multi-period approach. This study expands the understanding of the factors that influence managers to develop E-EM with a multi-period empirical research. We address the effects of external institutional pressures (regulative, normative, and culturally-cognitive) and the level of in-company environmental management (I-EM) on E-EM, which involves information exchange in the chain, cooperation with suppliers and customers. The analysis relies on survey data of 255 and 96 Dutch food and beverage (F&B) processors from 2002 and 2010 respectively. The findings indicate that respondents have considerably improved I-EM over time. I-EM requires in-company pzrocedures ranging from environmental strategy formulation to the managerial review of achieved results to assure continuous improvement of environmental performance. F&B processors that had already achieved a high level of I-EM are more likely to develop E-EM. Also growing normative and culturally-cognitive pressures from supply chain partners and increasingly from long-term public–private environmental covenants significantly influenced E-EM implementation. However, regulative pressure from public authorities had no impact. It appeared that E-EM is influenced mostly by institutional pressures when the firms are less experienced with I-EM.
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