Mid Sweden University

Eating habits are among the strongest drivers of negative environmental impact. Public procurement has been suggested as an efficient lever to catalyze changes within the food system. This study examines alternative purchase processes that may decrease the carbon footprint of publicly procured food through a case study of a municipality in the Northern part of Sweden. The GHG emissions associated with the current food service in the case study were 2.2 kg CO2e per kg food and must be reduced by 40.9% by 2030 to comply with the Paris Agreement; 76% of the emissions derive from food of animal origin (44% from unprocessed red meat). Three alternative diet scenarios, “zero red meat,” “−50% red meat,” and “flexitarian free from red meat,” were explored. Only 6% of the total purchased food kilograms were altered, yet the cutback of meat caused GHG emissions reductions turned out to be as high as 44%. The Swedish Law on Public Procurement, deficient infrastructure, unsustainable food culture, and local politicians' reluctance to change were mentioned as the main obstacles to materializing necessary changes in the food procurement system. The respondents also pointed out essential policy changes at the national and municipal levels.

One third of the world´s land surface (or half of all cultivable land) is currently used for cultivation of crops or raising of livestock. The global population is expected to increase to about 10 billion in 2050 which entails a need for increased food production while the land that can be sustainably used for food production remains constant. The world´s agroecosystems are not only limited in terms of area but are also losing their capacity to produce safe and reliable yields due to loss of topsoil, soil pollution, and extreme weather events due to climate change. This study assesses the potential to establish food production systems on marginal and degraded land with the purpose of avoiding new land clearings resulting from agricultural sprawl. A scoping review of the risks and opportunities associated with different approaches to exploit marginal land for food production was conducted and some illustrative examples were highlighted. The study suggests that marginal land, degraded by desertification, urban development and even soil pollution can contribute substantially to food security and thus decrease the need for further expansion of the agricultural frontier. Prominent challenges associated with such practises include the risk that pollutants enter the food chain. Several strategies to manage or avoid such risks were identified. Furthermore, well-designed restoration projects of degraded lands can provide ecosystem services such as soil remediation, carbon sequestration, and increased biodiversity, at the same time as food is safely produced. In order to sustainably produce more food on a limited land area with decreasing quality, innovative approaches such as the inclusion of marginal lands of little industrial or agricultural value are needed. Private gardens also occupy a large part of many cities making them a significant contributor to the food security in urban areas. This study conclude that the use of marginal and degraded land is a promising option to address the need to feed a growing population on limited land resources without interfering with areas worthy of protection due to ecological or cultural values.

Alternative food production technologies are being developed to meet the global increase in population and demand for a more sustainable food supply. Aquaponics, a combined method of vegetable and fish production, is an emerging technology that is widely regarded as sustainable. Yet, there has been limited research on its environmental performance, especially at a commercial scale. In this study, life cycle analysis (LCA) was used to assess the environmental impacts of food produced by an urban commercial aquaponic system located next to a retail store in a cold-weather region (Östersund, Sweden). The functional unit (FU) used is 1 kg of fresh produce, which includes cucumber (Cucumis sativus), tomatoes (Solanum Lycopersicum), and Atlantic salmon (Salmo salar). The system boundary is set from cradle to farm or retailer's gate due to the proximity of the aquaponic system to the retail store. Results were reported employing eight environmental impact categories, including global warming potential (GWP), marine eutrophication (MEU), and cumulative energy demand (CED). According to contribution analysis, the main hotspots of the system are electricity, CO2 enrichment, and heating. Potential areas to mitigate the impact of these parameters were highlighted in this study, including the establishment of symbiotic links to utilize urban waste and by-products. The impact per vegetable or fish produced was partitioned using energy and economic allocation and compared to other common cultivation methods. The yearly harvest from the aquaponic system was also compared to importing these food items from other European countries which showed lower annual greenhouse gas (GHG) emissions for the aquaponic system.

Soil pollution is a threat to food security and ecological and human health. Cd is one of the most common pollutants in agricultural soil and, due its human toxicity, one of the most hazardous. Amaranth is a documented hyperaccumulator of Cd and other pollutants, and it is commonly grown in Asia and South America. A considerable amount of amaranth is grown in suboptimal conditions, including nutrient-poor acidic soils. The objective of this experimental study was to examine the capacity of Amaranthus hypochondriacus to extract Cd from a nutrient-poor, acidic substrate that was spiked with different concentrations of Cd (2 and 20 mg kg−1 dw) during a period of 180 days. The plants grown in the substrate that was spiked with 20 mg Cd kg−1 dw did not develop into mature plants, but the plants grown in substrate that was spiked with 2 mg Cd kg−1 dw extracted a significant amount of Cd from the substrate by accumulating it into the above-ground biomass. The Cd levels varied from 113 to 176 mg kg−1 in the stems at the four measuring points, and from 64 to 94 mg kg−1 in the leaves. The concentrations in the plants increased with time and reached a maximal concentration of 176 ± 45 mg kg−1 dw for stems and 94 ± 41 mg kg−1 dw for leaves after 180 days. The mean bioaccumulation factor in the plants was 86 ± 15 after 90 days, 72 ± 12 after 120 days, 105 ± 37 after 150 days, and 99 ± 31 after 180 days, which confirms the previously reported capacity of Amaranthus hypochondriacus to hyperaccumulate Cd. Amaranthus hypochondriacus may, thus, be used to improve ecological and human health by remediating moderately Cd-polluted soils, even in nutrient-poor acidic soils.

Lignocellulose-bearing sediments are legacies of the previously unregulated wastewater discharge from the pulp and paper industry, causing large quantities of toxic organic waste on the Baltic Sea floor and on the bottom of rivers and lakes. Several km2 are covered with deposits of lignocellulosic residues, typically heavily contaminated with complex mixtures of organic and inorganic pollutants, posing a serious threat to human and ecological health. The high toxicity and the large volume of the polluted material are challenges for remediation endeavours. The lignocellulosic material is also a considerable bioresource with a high energy density, and due to its quantity, it could appeal to commercialization as feedstock for various marketable goods. This study sets out to explore the potential of using this polluted material as a resource for industrial production at the same time as it is detoxified. Information about modern production methods for lignocellulosic material that can be adapted to a polluted feedstock is reviewed. Biochemical methods such as composting, anaerobic digestion, as well as, thermochemical methods, for instance, HTC, HTL, pyrolysis, gasification and torrefaction have been assessed. Potential products from lignocellulose-bearing sediment material include biochar, liquid and gaseous biofuels, growing substrate. The use of a contaminated feedstock may make the process more expensive, but the suggested methods should be seen as an alternative to remediation methods that only involve costs. Several experiments were highlighted that support the conception that combined remediation and generation of marketable goods may be an appropriate way to address polluted lignocellulose-bearing sediments. Graphic abstract: [Figure not available: see fulltext.] 

This article seeks to contribute new insights into inclusive recycling environments through universal design. The aim is to develop knowledge on how waste is understood and managed by exploring the practice and design of a recycling environment. Applying a norm-critical view, this is explored in a study with participants from a municipal housing company and waste management company in northern Sweden. Methods used are go-along interviews together with professionals and observations of a recycling environment. The results are discussed as: 1) the “(un)social norm;” where our results show that the waste system is perceived as a social system, contradicting previous approaches where waste systems are treated as technical environments. 2) the “(un)design factor;” where we identify how design in a recycling context that doesn´t emphasise diversity may affect activities of sorting.

Global sustainability challenges associated with increasing resource demands from a growing population call for resource-efficient land-use strategies that address multiple sustainability issues. Multifunctional agroforestry-based phytoremediation (MAP) is one such strategy that can simultaneously capture carbon, decontaminate soils, and provide diverse incomes for local farmers. Chinandega, Nicaragua, is a densely populated agricultural region with heavily polluted soils. Four different MAP systems scenarios relevant to Chinandega were created and carbon sequestration potentials were calculated using CO2FIX. All scenarios showed the potential to store significantly more carbon than conventional farming practices, ranging from 2.5 to 8.0 Mg CO2eq ha−1 yr−1. Overall, carbon sequestration in crops is relatively small, but results in increased soil organic carbon (SOC), especially in perennials, and the combination of crops and trees provide higher carbon sequestration rates than monoculture. Changes in SOC are crucial for long-term carbon sequestration, here ranging between 0.4 and 0.9 Mg C ha−1 yr−1, with the most given in scenario 4, an alley cropping system with pollarded trees with prunings used as green mulch. The adoption rate of multifunctional strategies providing both commodity and non-commodity outputs, such as carbon sequestration, would likely increase if phytoremediation is included. Well-designed MAP systems could help reduce land-use conflicts, provide healthier soil, act as climate change mitigation, and have positive impacts on local health and economies. 

The contribution concerns Directives of the European Union related to environmental liability and the restoration of environmental damages caused by Fiber Banks in Swedish coastal waters. Fiberbanks and fiber-rich sediments are legacies of the previously unregulated wastewater discharge from the pulp and paper industry. Large quantities of this toxic waste material have accumulated in the Baltic Sea floor and on the bottom of rivers and lakes. The Environmental Liability Directive, the Habitats Directive and the Birds Directive of the EU addresses the liability against and restoration of damages of soil, water and biological diversity. The contribution aims to identify – based on the first results of an ongoing project -the potential to establish a liability for restoration measures also for cases of ongoing damages even if the discharges have been lawfully emitted prior to the release of these Directives. An in-depth literature review is applied as well as hermeneutic methods, such as comparative legal analyses and different types of text interpretation (e.g. historic, wording, rational).

The results show the kind of scientific evidence that exists for negative causal effects by Fiber Banks on soil, water and biological diversity respectively. Furthermore, the legal framework as well as the related judgement at EU-level will be presented which are relevant to establish the duty to restore and the liability of particular stakeholders to do so. Finally, first answers to questions about the level of evidence required to establish causality of negative effects by Fiber Banks as well as to questions about the burden of proof in such procedures will be presented.

The first results on this ongoing project show based on Swedish costal Fiber Banks the high potential of the interplay among the three Directives to effectively mitigate even past and ongoing environmental damages that have their origin in a time prior to the entering into force of these Directives. Such an institutional interplay can provide a blueprint for other restoration activities beyond the case study presented, in wider EU and globally. The presentation has its focus on SDG 16 as it particular guides SDG 16.3. “16.3 Promote the rule of law at the national and international levels and ensure equal access to justice for all” as well as 15.5 “Take urgent and significant action to reduce the degradation of natural habitats, halt the loss of biodiversity and, by 2020, protect and prevent the extinction of threatened species”. It relates to the conference topic through its call for liability for and restoration of environmental damages that have been caused by past human culture of ignoring nature.

The endeavour to align the goals of the Swedish food strategy with the national environmental quality objectives and the 17 global SDGs, presents an extraordinary challenge that calls forsystemic innovation. Industrial symbiosis can potentially provide the means for increasing sustainable food production, using locally subexploited resources that can reduce the need for land, agro-chemicals, transport and energy. This case study of the municipality of Härnösand, aims to assess opportunities and challenges for using waste flows and by-products for local food production, facilitated by industrial symbiosis. A potential symbiotic network was developed during three workshops with the main stakeholders in Härnösand. The potential of the COVID-19 pandemic to instigate policy changes, behavioural changes and formation of new alliances that may catalyse the transition towards food systems based on industrial symbiosis is discussed. The material flow inventory revealed that many under exploited resource flows were present in quantities that rendered them commercially interesting. Resources that can be used for innovative food production include, e.g., lignocellulosic residues, rock dust, and food processing waste. The internalised drive among local companies interested in industrial symbiosis and the emerging symbiotic relations, provide a fertile ground for the establishment of a local network that can process the subexploited material flows. Although there are multiple challenges for an industrial symbiosis network to form in Härnösand, this study shows that there is a significant potential to create added value from the region’s many resources while at the same time making the food system more sustainable and resilient, by expanding industrial symbiosis practices.

In previous research waste is described as a design flaw, as the processes that generate waste are a result of poor design (Anastas & Zimmerman, 2006; Ordónez, 2017). Ekberg (2009) points out that waste is what is left behind when imagination fails and this also reflects a reconsidering of waste as resources if given another context.   

In a globalized world with international trade, there is a greater range of products on the market and the amount of waste is constantly increasing (Avfall Sverige, 2021). A challenge is therefore to reduce the amount of waste. De Laney (2018) points out that there is a huge opportunity to reduce landfill waste and improve consumer habits through design. In this process, we must learn to include new and more inclusive ways of thinking and acting that support long-term social sustainability through design (Wikberg Nilsson & Jahnke, 2018).  

More than forty years ago, Dilnot (1982) emphasized that through design, we humans give shape, direction and meaning to our individual and collective existence in the world. Today, there are different design solutions for household waste and recycling and Vollaard and van Soest (2020) argue that reducing unsorted waste normally requires little in the way of capital investment beyond buying a set of in-home recycling bins. Although, many times consumers aren´t aware of the impact of their disposal decisions and many facilities for local waste disposal and recycling have processes that are unique to them that could cause confusion (De Laney, 2018). In accordance, we must find a way to get consumers to care and to motivate a change in habits.  

The research question of this study is how waste is understood and managed and this is explored through a case study with a local housing company and waste management company, interested in improving waste sorting.   

In order to answer the research question, interviews are conducted with people living in the specific buildings belonging to the housing company, respondents from the local housing company and the waste management company and results are presented on perceptions of waste and what the barriers are to improve waste sorting. This is complemented by a literature review to provide a better understanding of research through design for a sustainable behavior related to waste.  

This paper presents a norm-critical aspect on universal design and waste in a collaborative research project with the objective of creating more inclusive solutions for waste systems. The overall ambition of this study is to build on knowledge of the role of design as an activity of shaping the human surroundings and as an expression of the culture to which it belongs (Skjerven & Reitan, 2018).   

The study is related to global goal number 2.5: by 2030, substantially reduce waste generation through prevention, reduction, recycling and reuse.