No abstract

In order to increase resource recovery from solid waste, better sorting of household waste is needed. This article reports on a case study about waste sorting infrastructure performance carried out in two buildings in Gothenburg, Sweden. Results from the study reveal mismatches between users' needs and what the system offers, affecting the sorting rates and quality of the sorted material. Frequent sorting errors were observed from the tenants in these apartment buildings, where more than 70% of the discards that go in the mixed waste could be sorted out into other available fractions, with biodegradable waste being the most neglected. Hazardous waste was often discarded wrongly and recurrent errors were observed in the containers available for sorting different packaging material. Given the performance observed, initial suggestions are made for housing companies to rethink the sorting system they offer to their tenants (i.e. accessible space for electronic waste, more space for biodegradable waste, possibility of sorting textiles, etc.). Most importantly this paper makes the case that housing companies have the opportunity to provide sorting infrastructure that is designed for the user, rather than just fitted to the waste management system.

Abstract:A common approach for understanding people's domestic energy behavior is to study the influence of deterministic factors, such as attitudes, norms and knowledge, on behavior. However, few studies have succeeded in fully explaining people's behavior based on these factors alone. To further the understanding of people's everyday energy use, a goal-oriented approach based on activity theory has been applied to discuss energy conservation from a multiple goal perspective based on the findings from an interview study with 42 informants. The findings show that the informants used energy to fulfill goals linked to basic needs or desires related to their well-being. Even though the majority of informants had an explicit goal to reduce their energy consumption, many experienced conflicts with other competing goals, which often made energy conservation undesirable or challenging. The findings suggest that actions to reduce energy use will most often not be prioritized if they cannot be integrated into people's daily life without jeopardizing their possibilities to achieve their primary goals and satisfy their everyday needs. It is thus vital to consider people's everyday life and the many conflicts they experience when aiming to understand why people do, or do not, prioritize energy conservation during everyday activities.

Both the daily use and renewal of kitchens significantly contribute to the overall environmental impact of domestic buildings. To identify design implications related to circular consumption in domestic kitchens, 20 household interviews and one focus group session were performed, investigating how kitchens are used and transformed to meet households’ wants and needs. This study determined that daily kitchen resource use is greatly affected by kitchen design and that typical kitchen design generally does not promote sustainable resource use. Key factors that support minimization of resource use in the kitchen are the availability and planning of storage and workspaces. Furthermore, kitchens should be equipped with functions that enable households to use energy and water efficiently. Regarding kitchen renewal, various motivations that may initiate kitchen renovations can be summarised as follows: (1) Functional demands and changing needs, (2) aesthetic demands and changing trends, (3) obsolescence due to wear, and (4) linkage to another home renovation. This article concludes that a combination of design strategies is needed to reach a higher level of kitchen circularity. Moreover, these design strategies must be accompanied by circular business models and efforts to increase awareness of the environmental impact related to activities in and involving the kitchen.

No abstract