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  • 1
    Publication Date: 2015-05-07
    Description: Torrefaction is a thermochemical pre-treatment process for upgrading the properties of biomass to resemble those of fossil fuels such as coal. Biomass properties of particular interest are chemical composition, physical property and combustion characteristics. In this work, torrefaction of beech wood and miscanthus (sinensis) was carried out to study the influence of torrefaction temperature (240–300 °C) and residence time (15–150 min) on the aforementioned properties of the biomass. Results of the study revealed that torrefaction temperature has a significant influence on mass and energy yields, whereas the influence of the residence time becomes more apparent for the higher torrefaction temperatures (>280 °C). Torrefied miscanthus resulted in higher energy densification compared to beech wood for a residence time of 30 min. A significant improvement in grindability of the torrefied beech wood was obtained even for lightly torrefied beech wood (at 280 °C and 15 min of residence time). Observation from the combustion study showed that the ignition temperature is slightly affected by the torrefaction temperature. As a whole, the torrefaction temperature determines the characteristics of the torrefied fuel compared to other process parameters like residence time. Furthermore, with optimal process conditions, torrefaction produces a solid fuel with combustion reactivity and porosity comparable to raw biomass, whereas grindability and heating value are comparable to low quality coal.
    Electronic ISSN: 1996-1073
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 2
    Publication Date: 2016-03-12
    Description: Bio-oil produced from conventional flash pyrolysis has poor quality and requires expensive upgrading before it can be used as a transportation fuel. In this work, a high quality bio-oil has been produced using a novel approach where flash pyrolysis, catalysis and fractionation of pyrolysis vapors using two stage condensation are combined in a single process unit. A bench scale unit of 1 kg/h feedstock capacity is used for catalytic pyrolysis in an entrained down-flow reactor system equipped with two-staged condensation of the pyrolysis vapor. Zeolite-based catalysts are investigated to study the effect of varying acidities of faujasite Y zeolites, zeolite structures (ZSM5), different catalyst to biomass ratios and different catalytic pyrolysis temperatures. Low catalyst/biomass ratios did not show any significant improvements in the bio-oil quality, while high catalyst/biomass ratios showed an effective deoxygenation of the bio-oil. The application of zeolites decreased the organic liquid yield due to the increased production of non-condensables, primarily hydrocarbons. The catalytically produced bio-oil was less viscous and zeolites were effective at cracking heavy molecular weight compounds in the bio-oil. Acidic zeolites, H-Y and H-ZSM5, increased the desirable chemical compounds in the bio-oil such as phenols, furans and hydrocarbon, and reduced the undesired compounds such as acids. On the other hand reducing the acidity of zeolites reduced some of the undesired compounds in the bio-oil such as ketones and aldehydes. The performance of H-Y was superior to that of the rest of zeolites studied: bio-oil of high chemical and calorific value was produced with a high organic liquid yield and low oxygen content. H-ZSM5 was a close competitor to H-Y in performance but with a lower yield of bio-oil. Online fractionation of catalytic pyrolysis vapors was employed by controlling the condenser temperature and proved to be a successful process parameter to tailor the desired bio-oil properties. A high calorific value bio-oil having up to 90% organics was produced using two staged condensation of catalytic pyrolysis vapor. Zeolite-based acidic catalysts can be used for selective deoxygenation, and the catalytic bio-oil quality can be further improved with staged vapor condensation.
    Electronic ISSN: 1996-1073
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 3
    Publication Date: 2018-05-14
    Description: Sustainability, Vol. 10, Pages 1546: Does Thinking Style Make a Difference in Environmental Perception and Orientation? Evidence from Entrepreneurs in Post-Sanction Iran Sustainability doi: 10.3390/su10051546 Authors: Asghar Afshar Jahanshahi Alexander Brem Mohammad Shahabinezhad Styles of thinking set different paths for an entrepreneur’s perception and strategic action. In order to understand the environmental consequences of a thinking style, we investigated the relations between entrepreneurs’ linear and nonlinear styles of thinking with their perception of environmental uncertainty in their businesses. Furthermore, we tested the effect of the entrepreneurs’ linear and nonlinear style of thinking on their newly established firms’ orientation towards preserving the surrounding internal and external environment. Entrepreneurs with linear or rational thinking styles prefer more tangible data, information, facts, and analytical tools, and entrepreneurs with nonlinear or non-rational thinking styles rely more on internal feelings, impressions, imagination, creativity, and sensations when making important organizational decisions. By using cross-sectional survey data from 144 entrepreneurs in post-sanction Iran (2016–2017), we found that entrepreneurs with a linear style of thinking, in comparison to entrepreneurs with a nonlinear style of thinking, perceive a higher level of environmental state, effect, and response uncertainty in their business context. Furthermore, our survey results reveal that newly established firms by entrepreneurs with nonlinear styles of thinking have a more external environmental orientation, while newly established firms by entrepreneurs with a linear style of thinking have a more internal environmental orientation. Recognizing this contingency advances our understanding of how entrepreneurs perceive and enact their environments.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 4
    Publication Date: 2018-06-07
    Description: IJERPH, Vol. 15, Pages 1191: Antecedents of Corporate Environmental Commitments: The Role of Customers International Journal of Environmental Research and Public Health doi: 10.3390/ijerph15061191 Authors: Asghar Afshar Jahanshahi Alexander Brem The management of natural environments has become a fundamental issue for companies in recent years. A firm’s environmental commitment affects all levels of its operation. In this study, we investigated whether having an effective and constant relationship with customers over time (customer capital) makes a difference to firms with a high environmental commitment compared with less environmentally committed firms. We found support for our idea by using original survey data from 149 small and medium-sized enterprises (SMEs) in Iran (2016–2017). Furthermore, we found that customer capital enhances environmental collaboration with customers which, in turn, has a positive impact on the firm’s environmental commitments. These findings provide empirical evidence for the important role of “getting closer to customers” as a way of enhancing corporate environmental responsibility in developing countries with weak institutional environments.
    Print ISSN: 1661-7827
    Electronic ISSN: 1660-4601
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by MDPI Publishing
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  • 5
    Publication Date: 2017-06-17
    Description: Responsible research and innovation (RRI) is an approach to research and innovation governance aiming to ensure that research purpose, process and outcomes are acceptable, sustainable and even desirable. In order to achieve this ambitious aim, RRI must be relevant to research and innovation in industry. In this paper, we discuss a way of understanding and representing RRI that resonates with private companies and lends itself to practical implementation and action. We propose the development of an RRI maturity model in the tradition of other well-established maturity models, linked with a corporate research and development (R&D) process. The foundations of this model lie in the discourse surrounding RRI and selected maturity models from other domains as well as the results of extensive empirical investigation. The model was tested in three industry environments and insights from these case studies show the model to be viable and useful in corporate innovation processes. With this approach, we aim to inspire further research and evaluation of the proposed maturity model as a tool for facilitating the integration of RRI in corporate management.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 6
    Publication Date: 2017-09-26
    Description: Sustainability, Vol. 9, Pages 1636: Who Takes More Sustainability-Oriented Entrepreneurial Actions? The Role of Entrepreneurs’ Values, Beliefs and Orientations Sustainability doi: 10.3390/su9101636 Authors: Asghar Afshar Jahanshahi Alexander Brem Amitab Bhattacharjee We examine the relationships between entrepreneurs’ values, beliefs and orientations with their firms’ engagement in sustainability-oriented entrepreneurial actions, using a sample of 352 newly established businesses from two Asian countries (Bangladesh and Iran). Our results reveal a dual role of entrepreneurs’ values, beliefs and orientations when taking sustainability-oriented actions. We confirm that individual differences in the set of values, beliefs and orientations can foster or hinder the sustainability-oriented actions across organizations. Our paper contributes to the growing literature of sustainable entrepreneurship, by providing answers for recent calls for better understanding which entrepreneurial ventures engage more in sustainability-oriented actions.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 7
    Publication Date: 2017-10-22
    Description: Sustainability, Vol. 9, Pages 1899: Sustainability in SMEs: Top Management Teams Behavioral Integration as Source of Innovativeness Sustainability doi: 10.3390/su9101899 Authors: Asghar Afshar Jahanshahi Alexander Brem Top management teams’ (TMTs’) behavioral integration has received extensive attention from strategic management scholars in recent years. To learn more about the consequences of this phenomenon at the team level, we explore the relationship between TMTs’ behavioral integration with their innovativeness and sustainability orientation. To accomplish this, we surveyed 40 TMTs in Iranian small- and medium-sized enterprises (SMEs) at two points in time. We ran a hierarchical multiple regression in order to test the hypotheses of the study. Building a theoretical model based on the Upper-Echelons framework, we found that the extent to which a TMT is behaviorally integrated is positively and significantly related to TMT innovativeness. Furthermore, our result reveals that a highly behaviorally integrated TMT is more likely to engage in sustainability-oriented actions. Hence, behaviorally integrated TMTs offer its team members an increased chance of being innovative and generating new ideas as compared to less behaviorally integrated TMTs. Finally, our results indicate that the generation of novel ideas is higher in teams with younger members, and that highly educated TMTs generate more innovative ideas in the workplace.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 8
    Publication Date: 2016-11-10
    Description: The uptake of solutions that increase energy efficiency is significantly lower for small- and medium-sized enterprises (SMEs). This is due to several barriers, among which legislation, motivation, finance and other resources play a large role. In this paper, we describe a framework of market readiness and use it to assess the asymmetry between existing solutions and opportunities in the market. The aim is to identify which steps can be taken in order to introduce more energy optimizations into SMEs, and who should be taking those steps. More specifically, we explore how four Danish SMEs, in different parts of the value chain in the food processing industry, view energy efficiency improvements, focusing on the potential reuse of waste heat, along with what they consider important for taking on such projects. The findings show that while the companies operate very differently, they share common motivations and barriers when it comes to energy efficiency. Based on these findings, this paper argues that the biggest advancements are not to be made within the SMEs, but partly through the legislation that affects the financial benefits of energy improvement solutions, and through the marketing approach that solution suppliers take towards their potential customers when addressing the inherently individual needs of SMEs.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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  • 9
    Publication Date: 2018-03-06
    Description: Sustainability, Vol. 10, Pages 702: Responsible Research and Innovation in Industry—Challenges, Insights and Perspectives Sustainability doi: 10.3390/su10030702 Authors: André Martinuzzi Vincent Blok Alexander Brem Bernd Stahl Norma Schönherr The responsibility of industry towards society and the environment is a much discussed topic, both in academia and in business. Responsible Research and Innovation (RRI) has recently emerged as a new concept with the potential to advance this discourse in light of two major challenges industry is facing today. The first relates to the accelerating race to innovate in order to stay competitive in a rapidly changing world. The second concerns the need to maintain public trust in industry through innovations that generate social value in addition to economic returns. This Special Issue provides empirical and conceptual contributions that explore corporate motivations to adopt RRI, the state of implementation of concrete RRI practices, the role of stakeholders in responsible innovation processes, as well as drivers and barriers to the further diffusion of RRI in industry. Overall, these contributions highlight the relevance of RRI for firms of different sizes and sectors. They also provide insights and suggestions for managers, policymakers and researchers wishing to engage with responsibility in innovation. This editorial summarizes the most pertinent conclusions across the individual articles published in this Special Issue and concludes by outlining some fruitful avenues for future research in this space.
    Electronic ISSN: 2071-1050
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by MDPI Publishing
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