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The purpose of this paper is to assess the waste characteristics and separation efficiency of source separation of household waste in low- and middle-income communities in Kumasi Metropolis, Ghana.

A sample of 60 households participated in the household survey, education on source separation and pilot source separation exercise. The solid waste was sorted into six fractions and three recycling categories (biodegradable; paper and plastic; residue).

The mean generation rate of solid waste was 0.52±0.26 kg/per capita/day for the low-income community and 0.65±0.27 kg/per capita/day for the middle-income community. The waste fractions in the communities (low, middle income) were biodegradable organics (59.15, 65.68 per cent), plastics (11.01, 10.68 per cent), papers (3.15, 4.51 per cent), glass (0.89, 2.57 per cent), metals (0.96, 4.63 per cent) and miscellaneous (24.84, 11.93 per cent), respectively. The separation efficiency for organic category was 70 per cent, inorganic and residue was over 69 per cent and the paper and plastics was over 60 per cent.

The study suggests that the success of source separation programme hinges on education and economic incentives. It was noted that the sample size could be increased to enhance the accuracy of the data for prediction purpose.

The findings showed there is potential for recycling through source separation programme in low-and middle-income communities. Public education and economic incentives are necessary for successful source separation programme.

The paper provides insight into source separation to contribute to better understanding of how city authorities in developing countries could take advantage of economic incentives to scale-up recycling.

The purpose of this paper is to examine the factors that encourage households’ source separation behaviour in Accra and Tamale Metropolises in Ghana.

Using a cross-sectional design, 855 households of Ghana were interviewed based on the theoretical framework of the theory of planned behaviour (TPB). The ordered probit regression model was employed to examine the factors that influence households’ source separation intention.

The results indicated that educational attainment of head of household, total income of household, occupation type of household head, information, past experience with source separation, inconvenience in terms of time, space and availability of formal source separation scheme, attitude, subjective norm and the location of the respondents significantly predicted households’ solid waste separation intentions.

The cross-sectional design does not determine causality but an association. Thus, future studies should examine actual household waste separation behaviour by using the experimental design to test the TPB model.

To promote solid waste separation at source, the public should be educated and provided with solid waste separation schemes that are efficient and compatible with households’ preference.

This study was partly motivated by the fact that despite the benefits associated with source separation, little attention has been given to formal source separation in Ghana. Moreover, there are limited studies on source separation behaviour in Ghana using the TPB as the theoretical framework.

The aim of this paper is to examine the motives behind the separation of household waste (or the lack of such separation) on the basis of the theory of interpersonal behaviour. The aim of this paper is to broaden and deepen the understanding of key determinants of household waste separation (or the lack of such separation). This study proposes a conceptual model based on the theory of interpersonal behaviour in combination with the focus theory of normative conduct.

A quantitative method was applied to investigate the views of 350 heads of households in the Johannesburg metropolitan area through an administered questionnaire. Structural equation modelling was employed to test the hypothesised structural relationships in the proposed model.

The results indicate that household waste separation intention is influenced by cognition of the consequences and by injunctive and personal normative pressures. Separation intention and past habits were found to have a direct influence on actual separation behaviour.

While the theory of planned behaviour is ubiquitous in the recycling literature, this study presents a different, broader framework for a better understanding of the drivers of household waste separation. This is achieved by applying the theory of interpersonal behaviour in combination with the focus theory of normative conduct. The findings provide insights that could help municipalities in emerging markets to promote household waste separation for better management of the environment.

The key challenge that urban cities in most developing and transitional economies is confronting is municipal solid waste (MSW) management. Waste separation is a critical component to successful recycling management in terms of enhancing the quality of recyclables, reducing MSW and optimizing incineration. The urge to actualizing sustained waste separation behavior has been hindered by potential barriers. This study aims to examine the influences of external and internal stimuli of targeted households' waste separation intention in parts of China.

A multifactor framework predicting the process that leads to waste separation attitude and behavioral intention is proposed. SEM analysis is conducted in SmartPLS based on 371 survey questionnaires collected in Nanning city in China.

Policy regulation is the biggest determinant of attitude among external stimuli, while awareness of consequence has the strongest relationship with an attitude among internal stimuli. Facilitating conditions, subjective norms and moral norms are all significant predictors of attitude. As a result, increasing positive attitude leads to enhance waste separation lifestyle.

This study adopts a cross-sectional design to investigate the waste separation intention of local households. Data collection is restricted to one point in time for every individual. A mixed method is recommended. Quantitative research can examine variables provided in existing literature with numerical analysis. Qualitative research might be helpful to identify other unknown factors. Also, the survey questionnaires employ a self-reported manner, and respondents might be overrating to avoid embarrassment.

Future research is recommended to engage observation at houses or at the waste-collecting points for actual waste separation behavior. Moreover, this study measures intention toward household waste separation, but whether this intention will eventually lead to waste separation behavior is not a guarantee. Future study is recommended to examine whether intention translates into actual waste separation behavior.

Emphasizing the importance of policy element as a direct influence toward attitude, this paper focuses on the waste separation attitude accumulated from external and internal stimuli, and, concurrently, waste separation behavioral intention is influenced by accumulated attitudes. The study provides relevant policy development information of three Asian countries to enhance their present and future policy directions for a sustainable household waste separation management process

The paper aims to ascertain whether residents in Nguyen Du ward still sort their waste at source following the end of the 3R project that ended in 2009. Additionally, this paper aims to explore the relationship between waste separation practices and social bonds.

The Travis Hirschi theory of social control was applied, together with the mixed method research design which included a structured questionnaire survey. Twelve semi-structured interviews were also conducted with residents and the data processed by SPSS software, using Chi-Square test, Independent-Samples t-test and Pearson's correlation analysis.

A proportion of respondents has continued practicing waste separation since the 3R project ended. The study also indicated that the greater the involvement in family and neighborhood activities the more the participants were likely to practice waste separation.

The small sample size limits the extent to which the most influential factors can be determined and therefore the degree to which the findings can be generalized.

The study includes implications for rerunning the waste separation programs for households as together with community campaigns to improve individuals' attachment and commitment and thus their participation in pro-environmental behaviors.

To the author’s knowledge, this is the first study to take a sociological approach to investigate factors affecting household waste separation, which has attracted little attention in previous studies. Useful information is also provided to local authorities for a policy-making process to implement effective domestic waste policies.

This paper positions environmental concern as the antecedent of attitude, subjective norm and perceived behavioural control. It also sets to expand the theory of planned behaviour by including two condition factors: favourable situation and facility availability on the intention to separate food waste at source.

The study collects data by using self-administered questionnaires on 682 respondents in Malaysia. Structural equation modelling is employed to test the conceptual model and the proposed hypotheses.

The results show that environmental concern positively influences attitude and subjective norms, which, in turn, influences food waste separation intention. Favourable situation and facility availability are found to influence the separation intention.

This study is one of the earliest studies to investigate residents’ intention to participate in food waste separation at a source that employs the expanded theory of planned behaviour with environmental concern and condition factors.

This study aims to investigate the determinants of household behavioural intention towards household reducing, reusing and recycling behaviour of food waste management.

The data were collected from 670 households in Malaysia and analysed by using the partial least square method.

The findings reveal that motivation to participate, ability to participate and perceived benefits are the crucial factors that significantly influence households’ attitudes. Household attitude has a significant impact on household behavioural intention, whilst social influence and perceived behavioural control are not associated with it. Government support is positively related to perceived behavioural control. The result also indicates that household behavioural intention has a significant impact on household reducing, reusing and recycling behaviour.

The participants of this study were involved in home planning and food preparation in Malaysia. The individuals in charge of the household might have more awareness of food planning and waste control. Thus, it is recommended to adopt findings from other countries and learn from the experience of the local and international communities.

The households’ behavioural intentions can lead to the reducing, reusing and recycling behaviour of food waste management. The government policy mechanisms and households’ awareness can work effectively against food waste reduction because evaluations of the food waste programme were found to be scarce.

Food insecurity is one of the major social problems. Many people are not aware of the food waste impacts and consequences; thus, motivation, knowledge and information should be provided to the consumer through forums and campaigns.

The findings contribute to new insights of household behavioural intention towards food waste reduction management by assessing the determinants of household attitude and government support for food waste reduction management programmes towards household reducing, reusing and recycling behaviours.

In less than a decade to Sustainable Development Goals, the urban solid waste (USW) emanating from households, especially in developing countries, calls for concern. Several policies have been suggested and some implemented, but the challenges facing USW management remain, especially in developing nations. Past studies demonstrated that the fourth industrial revolution (4IR) technologies can be used to improve urban public services. The role of 4IR in mitigating the challenges of USW is yet to receive in-depth research in Nigeria. Thus, the study investigated 4IR role regarding mitigating the challenges facing USW.

Seven cities across Nigeria, including the Federal Capital Territory, were used as the study area to achieve the research objectives via a qualitative research design. Thirty-two semi-structured interviews were conducted from selected regulators, households, legislators, ICT experts, NGOs and waste managers. A thematic approach was adopted to analyse the collated data.

Findings group the USW challenges into five categories. The 4IR technologies can be used to manage USW; thus, they create an opportunity to integrate and promote sustainable clean cities.

This study is confined to the 4IR role concerning mitigating the encumbrances facing USW in Nigeria and proffered feasible policies to enhance a sustainable healthy environment.

Proffered policy solutions will stir policymakers and construction practitioners to think outside the box and offer and better understand how 4IR technologies can be utilised to mitigate those challenges. The outcome will create sustainable clean cities as part of the implication contribution to the body of knowledge.

Evidence from the reviewed literature shows a paucity of literature focussed on 4IR roles in mitigating the encumbrances facing USW in Nigeria. Therefore, this study contributes to the existing research work on 4IR concerning its role in enhancing USW in Nigeria and, by extension, to other developing countries.

Food waste is a systemic problem, with waste occurring at all stages in the supply chain and consumption process. There is a need to unpack which strategies, approaches and tools can be applied to reduce the amount of food wasted. Understanding the extent of social marketing principles used offers insights into the additional means that can be applied to increase voluntary behavioral change.

Following preferred reporting items for systematic reviews and meta-analyses guidelines, a systematic quantitative literature review was undertaken focused on outcome evaluation studies conducted since 2000. Six databases were examined, and cross rating was used to identify previous programs tackling food waste behavior at a household level. A total of 23 programs were analyzed against 8 social marketing components.

Overall, only 2 out of 23 food waste programs self-identified as social marketing programs. A lack of application of social marketing elements was observed across all studies, indicating a tendency to implement non-voluntary change approaches. The most commonly targeted behaviors were source-separation. Personal interaction involved the distribution of information in person (typically through door knocking). Personal interaction strategies were identified as the most effective program techniques. Program effectiveness was greater when the social marketing components of behavioral change, theory and marketing mix were used, indicating the potential for voluntary approaches to be applied more in the future.

To the best of the authors’ knowledge, the current study was the first systematic literature review to examine the extent of social marketing application in food waste programs reported in peer-reviewed academic literature using eight components of social marketing. The study revealed behavioral change was more likely when more social marketing components were used. Future research is recommended to consider the application of full range of social marketing elements to extend beyond involuntary approaches, which can be subjected to criticism from community.

This study aims to identify the key determinants of waste separation intention among the students in Universiti Teknologi Malaysia (UTM).

This study adopted the theory of planned behaviour (TPB) as the fundamental framework. The key determinants of waste separation behaviour are attitude, subjective norm (SN) and perceived behavioural control. An elicitation survey has been conducted to explore the students’ beliefs relative to waste separation behaviour. The empirical data collected were analysed using structural equation modelling (SEM) assisted by SmartPLS software.

The result shows that only two determinants are significant towards intention, attitude and perceived behavioural control, while SN is not. The results of the study are significant to the organisation, as an identification of the determinants that influence waste separation intention contributes to a more focused waste separation programme aligned to Malaysia’s objective towards a sustainable developing country.

There are few studies on solid waste separation compared to food waste and industrial waste separation. The authors focus on the identification of the key determinants of solid waste separation intention among students. This study serves as an initial attempt to adopt the TPB in solid waste separation context, hence contributing to existing literature.