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1 – 10 of over 2000Florian Lüdeke‐Freund, David Walmsley, Mirco Plath, Jan Wreesmann and Alexandra‐Maria Klein
This article seeks to address aviation as an emerging biofuel consumer and to discuss sustainability issues and consequences for feedstock production concepts. Biojet fuels have…
Abstract
Purpose
This article seeks to address aviation as an emerging biofuel consumer and to discuss sustainability issues and consequences for feedstock production concepts. Biojet fuels have been identified as a promising, readily deployable alternative to fossil‐based aviation fuels. At the same time they are highly criticised as their production may have negative social and environmental impacts. Therefore, the paper aims to identify major sustainability issues and assessment challenges and relate these to the production of biojet fuel feedstock.
Design/methodology/approach
Two plant oil production concepts are presented that address the sustainability issues discussed. Both concepts are being investigated within the research project “Platform for Sustainable Aviation Fuels”. A literature‐based overview of sustainability issues and assessment challenges is provided. Additionally, conceptual insights into new plant oil production concepts are presented.
Findings
The use of biojet fuels is often hailed as a strategy for the aviation industry to become more sustainable. However, biofuels are not necessarily sustainable and their potential to reduce GHG emissions is highly debated. Several unresolved sustainability issues are identified highlighting the need for improved assessment methods. Moreover, the two concepts presented have the potential to provide sustainably grown feedstock, but further empirical research is needed.
Originality/value
This article addresses researchers and practitioners by providing an overview of sustainability issues and assessment challenges related to biojet fuels. Consequences are identified for two plant oil feedstock concepts: catch cropping in temperate regions and silvopastoral systems in tropical and subtropical regions.
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Douglas Warner, John Tzilivakis, Andrew Green and Kathleen Lewis
This paper aims to assess agri-environment (AE) scheme options on cultivated agricultural land in England for their impact on agricultural greenhouse gas (GHG) emissions. It…
Abstract
Purpose
This paper aims to assess agri-environment (AE) scheme options on cultivated agricultural land in England for their impact on agricultural greenhouse gas (GHG) emissions. It considers both absolute emissions reduction and reduction incorporating yield decrease and potential production displacement. Similarities with Ecological Focus Areas (EFAs) introduced in 2015 as part of the post-2014 Common Agricultural Policy reform, and their potential impact, are considered.
Design/methodology/approach
A life-cycle analysis approach derives GHG emissions for 18 key representative options. Meta-modelling is used to account for spatial environmental variables (annual precipitation, soil type and erosion risk), supplementing the Intergovernmental Panel on Climate Change methodology.
Findings
Most options achieve an absolute reduction in GHG emissions compared to an existing arable crop baseline but at the expense of removing land from production, risking production displacement. Soil and water protection options designed to reduce soil erosion and nitrate leaching decrease GHG emissions without loss of crop yield. Undersown spring cereals support decreased inputs and emissions per unit of crop yield. The most valuable AE options identified are included in the proposed EFAs, although lower priority is afforded to some.
Practical implications
Recommendations are made where applicable to modify option management prescriptions and to further reduce GHG emissions.
Originality/value
This research is relevant and of value to land managers and policy makers. A dichotomous key summarises AE option prioritisation and supports GHG mitigation on cultivated land in England. The results are also applicable to other European countries.
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Eline de Backer, Joris Aertsens, Sofie Vergucht and Walter Steurbaut
Sustainable agriculture implies the ability of agro‐ecosystems to remain productive in the long‐term. It is not easy to point out unambiguously whether or not current production…
Abstract
Purpose
Sustainable agriculture implies the ability of agro‐ecosystems to remain productive in the long‐term. It is not easy to point out unambiguously whether or not current production systems meet this sustainability demand. A priori thinking would suggest that organic crops are environmentally favourable, but may ignore the effect of reduced productivity, which shifts the potential impact to other parts of the food provision system. The purpose of this paper is to assess the ecological sustainability of conventional and organic leek production by means of life cycle assessment (LCA).
Design/methodology/approach
A cradle‐to‐farm gate LCA is applied, based on real farm data from two research centres. For a consistent comparison, two functional units (FU) were defined: 1ha and 1 kg of leek production.
Findings
Assessed on an area basis, organic farming shows a more favourable environmental profile. These overall benefits are strongly reduced when the lower yields are taken into account. Related to organic farming it is therefore important that solutions are found to substantially increase the yields without increasing the environmental burden. Related to conventional farming, important potential for environmental improvements are in optimising the farm nutrient flows, reducing pesticide use and increasing its self‐supporting capacity.
Research limitations/implications
The research is a cradle‐to‐farm gate LCA, future research can be expanded to comprise all phases from cradle‐to‐grave to get an idea of the total sustainability of our present food consumption patterns. The research is also limited to the case of leek production. Future research can apply the methodology to other crops.
Originality/value
To date, there is still lack of clear evidence of the added value of organic farming compared to conventional farming on environmental basis. Few studies have compared organic and conventional food production by means of LCA. This paper addresses these issues.
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Temporary and permanent decline in the productive capacity of the land due to natural and human-induced activities such as soil erosion, changing cropping practices and less use…
Abstract
Purpose
Temporary and permanent decline in the productive capacity of the land due to natural and human-induced activities such as soil erosion, changing cropping practices and less use of organic matter (OM) has been the greatest challenge faced by mankind in recent years, particularly in the hills and mountains of Nepal. Hence, the purpose of this paper is to examine the effectiveness of sustainable soil management practices to mitigate desertification process in the hills of Nepal.
Design/methodology/approach
Promotion of sustainable soil management (SSM) practices through a decentralised agriculture extension approach by involving all the stakeholders in a participatory way.
Findings
SSM practices mainly: OM management, fodder and forage promotion, increased biomass production systems, integrated plant nutrition systems, and bioengineering for soil and water conservation are identified as the most appropriate and relevant technologies in mitigating the desertification process without deteriorating land quality, particularly conserving the top-soils effectively and efficiently in the hills and mountains of the country.
Research limitations/implications
This research is focus on the overall effect of SSM practices due to time and budget constraints. There is scope for doing research on the different aspects of SSM practices and the extent of their effect on different soil parameters (chemical, biological and physical).
Practical implications
SSM interventions clearly indicated that there is significant impact in increasing soil fertility, conserving fertile top-soils and mitigating physical, chemical and biologic desertification processes. These are possible through maintaining and improving the soil organic matter, which is the most important indicator for soil health. SSM practices have resulted in an increase of up to 30 per cent in crop yield compared to yields without SSM practices. This might be due to the improvement in SOC which improves soil texture, increases nutrient supply from organic source and conserves water quality, thus, improving soil quality.
Social implications
This has created awareness among farmers. Hence, farmers are mitigating pH through increased use of organic manures, where there is less availability of agriculture lime and they are far from road access.
Originality/value
SSM practices significantly contributes to combat soil desertification in the hills of Nepal.
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The purpose of this paper is to demonstrate applicability of the pervaporation technique for separation ethanol/water mixtures.
Abstract
Purpose
The purpose of this paper is to demonstrate applicability of the pervaporation technique for separation ethanol/water mixtures.
Design/methodology/approach
For the purposes of membrane material development for pervaporation zeolite filled and unfilled cellulose acetate membranes were prepared. Zeolite types were 4A, 13X. The effect of incorporation of nano‐sized zeolites prepared in a colloidal form in membranes was also investigated. Equilibrium sorption experiments were carried out. Degrees of swelling were calculated at different liquid feed mixture compositions for separating an azeotrope forming mixture, ethanol/water by pervaporation.
Findings
Zeolite 13X filled CA membrane may have the better pervaporation performance than zeolite 4A filled CA membrane. From the sorption tests it is concluded that ethanol/water azeotropy can be achieved by pervaporation.
Practical implications
Application of CA membranes in industrial scale pervaporation units may be feasible for separation of ethanol/water mixtures. Specially ethanol/water azeotropy will be achieved by pervaporation. Using distillation and pervaporation hybrid systems, bioethanol can be produced economically.
Orginality/value
The paper illustrates the success of pervaporation techniques in separating ethanol/water mixtures.
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The paper intends to show why farms as we know them today may soon be a thing of the past and that organisational behaviour research has an important contribution to make in…
Abstract
Purpose
The paper intends to show why farms as we know them today may soon be a thing of the past and that organisational behaviour research has an important contribution to make in assisting the upcoming transformation.
Design/methodology/approach
Two strains of literature are reviewed and then synthesised: the literature on robots replacing humans in agricultural production and the literature on vertical integration that shifts decisions to agribusiness. Then the potential contribution of organisational behaviour research is outlined.
Findings
It is shown how the farm is likely to lose both roles for which their geographic entity is important: making decisions and carrying out production. This requires contributions from organisational behaviour research in the realms of decision designs and social systems.
Social implications
It can be anticipated that the most profitable strategy for farmland owners in the future will be collaboration with contractors. Farms as organisations, are increasingly losing their importance. This not only has grave social implications for farmworkers and landowners but also for scholars in organisational behaviour research.
Originality/value
The paper challenges an organisational unit that is so familiar to us that it is rarely questioned.
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M. Rezaul Islam and Walter Leal Filho
Drawing findings from the river erosion-prone district Bhola in Bangladesh, this study presents the nature and causes of human displacement and the types of resilience livelihood…
Abstract
Drawing findings from the river erosion-prone district Bhola in Bangladesh, this study presents the nature and causes of human displacement and the types of resilience livelihood options for reducing risks caused by river erosion. The study used a quantitative research approach, in which a survey was employed. Data were collected through face-to-face interviews with 371 heads of households from three unions of three Upazilas (sub-divisions) in the Bhola District. Results showed that 95% of the households were displaced by river erosion, 54% of them were displaced two to four times in the last five years, 30% of the households were displaced to embankments, and 22% were displaced to their relatives’ houses. Nearly 70% of the households reported river erosion as a main cause and 42% referred other disasters. Regarding livelihood options, 47% of the households desired to engage in fishing labour, 44% in day labour, and 33% in independent fishing. During river erosion, 93% of the household members had to engage in income-generating activities, and one-half of them had to change their livelihood options. Finding new livelihood options and resilience strategies to reduce displacement would be an important guideline for disaster managers, policy-makers, and development practitioners.
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Roger L. Burritt and Stefan Schaltegger
The purpose of this paper is to explore the scope of applications and benefits of sustainability accounting for the production and industrial use of biomass as an energy source…
Abstract
Purpose
The purpose of this paper is to explore the scope of applications and benefits of sustainability accounting for the production and industrial use of biomass as an energy source and substitute for fossil‐fuel use. As environmental degradation and unacceptable social impacts not only increase from the production and use of fossil‐fuel based energy, but also from alternative energy sources, the monitoring, controlling and measuring of the (un‐)sustainability of alternative energy production and use emerges as an area in critical need of research.
Design/methodology/approach
The paper presents a review of the issues surrounding the accounting for the (un‐)sustainability of industrial biomass production and use, considering what biomass is, the current and forecast importance of industrial biomass, different approaches to its production, and the subsequent measurement and monitoring of its potential (un‐)sustainability.
Findings
The paper finds that it is insufficient to conclude in general terms, as is often done or assumed in policy documents and statements, that industrial production and use of biomass is sustainable (or unsustainable) and that accounting for biomass must recognise the broader ecological and social system of which the production and use form a part. A further finding of the paper is that from agricultural or industrial production of biomass through to consumption and industrial use of biomass, the accounting issues surrounding biomass production and use are essential to determining its (un‐)sustainability.
Originality/value
The paper provides an overview of the importance of and problems with the production of biomass for industrial use, and related sustainability issues. It discusses possibilities for and limitations of accounting to address these sustainability issues as well as the need for and the challenges in measuring the (un‐)sustainability of biomass production for industrial use and the accounting for sustainability improvements.
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The new Consumer Protection Act, 1987 has three main objectives:
Mary Shelman, Damien McLoughlin and Mark Pagell
This chapter presents the case study of Origin Green, the Irish food industry’s national program that committed the entire supply chain to meet sustainability targets and…
Abstract
Purpose
This chapter presents the case study of Origin Green, the Irish food industry’s national program that committed the entire supply chain to meet sustainability targets and simultaneously branded the efforts and outcomes to increase demand for Irish food products. The brand creation is discussed under headings of building predictability, creating innovative capacity, and facilitating an intimate relationship.
Methodology/approach
The chapter describes supply chain risk mitigation, brand development, and the relationship between the two, proposing that they should be regarded as simultaneous rather than separate processes. This is followed by the case history of Origin Green.
Findings
The literatures on risk mitigation and brand equity development are extended by suggesting that the development of each should be regarded as simultaneous rather than consecutive activities.
Practical implications
The chapter outlines a program for national branding and sustainability and an insight on risk mitigation and branding that should be of interest to policymakers designing such programs and senior leaders considering involvement.
Originality/value
This chapter will be useful to policymakers considering national or industry-wide initiatives. Further, the chapter demonstrates the opportunity and challenges of systemic approaches to sustainability. The opportunity to brand nations and systems and the need to simultaneously build supply chain and brand for such is an original insight that is of value to strategy and planning. Similarly, at firm level, removing risk from the supply chain and building a brand would be of value.
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