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1 – 10 of over 2000Guilherme Tortorella, Glauco Silva, Lucila M.S. Campos, Cassiano Pizzeta, Amanda Latosinski and Alessandro Soares
The purpose of this paper is to investigate, through a comparative analysis, the applicability of lean manufacturing practices, such as value stream mapping (VSM), for…
Abstract
Purpose
The purpose of this paper is to investigate, through a comparative analysis, the applicability of lean manufacturing practices, such as value stream mapping (VSM), for productivity improvement in recycling centres (RCs) aided by multi-criteria decision analysis.
Design/methodology/approach
The study is carried out in five RCs that sort the municipal solid waste of Porto Alegre, one of the main cities in Brazil. Since all of the centres present their labour composed by poor communities’ members, cultural and social characteristics may represent an incremental challenge for lean implementation. Further, these centres are organised in cooperatives, in which decisions are taken through a participatory way and all their members are entitled to vote, undermining and retarding the decision-making process.
Findings
The integration of a multi-criteria decision-making tool to the lean practices enables the prioritisation of improvements, complementing the final stage of VSM. In particular, this contribution becomes especially important in cooperatives managed by community, where decisions are often complex and time-consuming. Finally, despite the increasing pressure for better performance of RCs, the existent mindset is still far from the private sector, where lean practices were conceived. Further, the findings suggest that, despite processes similarities, it is not feasible to declare the existence of a one-best practice to such scenario.
Originality/value
In theoretical terms, the authors demonstrate through a multi-case study the adequacy of analytic hierarchy process as a decision analysis tool complementary to the VSM, enabling a broader perspective about this subject. Concerning the practical contribution, the comprehension of the adaptation needs for lean practices implementation within the production context of solid waste RCs provides a framework with guidelines for this sector, when incorporating lean activities. Lean practitioners and eventual municipal authorities involved in improving productivity of community-managed RCs might benefit from this framework, since they will be able to emphasise the development of recommended and already tested lean practices that tend to improve their operational performance.
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Shadi Moqbel, Rund Abu-Zurayk, Ayat Bozeya, Raed Alsisan and Abeer Al Bawab
This study sought to assess the process of initiating a sustainable recycling program at the University of Jordan. It illustrates the potentials of recycling, perceived awareness…
Abstract
Purpose
This study sought to assess the process of initiating a sustainable recycling program at the University of Jordan. It illustrates the potentials of recycling, perceived awareness of recycling by the students and staff, as well as challenges to a sustainable waste recycling program. This study aims to identify the barriers and challenges that face a sustainable waste recycling program at the University of Jordan.
Design/methodology/approach
The study consisted of investigating waste recycling potential on campus, inspecting general environmental awareness toward recycling and running an experimental recycling study on part of the campus. A waste characterization study was conducted to assess the current waste status and recycling extent. A questionnaire survey was carried out to obtain information on the students’ and staffs’ awareness of waste recycling and management on campus. In the experimental recycling study, seventy units of waste segregation bins were distributed on campus. The recycling efficiency was evaluated at two schools; the School of Engineering and the School of Medicine. The administrative support and collaboration while running the recycling program were also observed.
Findings
Overall, waste recycling at the University of Jordan has an appreciable opportunity and potential. A substantial amount of waste can be diverted from going to the landfill. Data showed general positive recycling rates except for plastic. Also, the recycling rates show great potential for enhancing. The recycling at the University of Jordan faces several barriers and obstacles. The greatest barrier was identified as the lack of cooperation of the administrative system on campus. The administrative support for the recycling program was strong only at the initiation of the recycling program. Administrative support has a vital influence on the recycling program. It has the potential of boosting it or bringing it to halt. Future studies should focus on investigating recycling efficiency for the entire campus and focus more on increasing pro-environmental behavior among students and staff in higher education institutions.
Originality/value
The value of this research lies in it being conducted in a large campus university in a developing country. Also, the study used a diagnostic approach that is based on evaluating an environmental sustainability program as it evolves inside a higher education institution. The study illustrates the challenges that face universities in developing countries while adopting green campus initiatives.
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Siti Nur Syamimi Mohd Na’im, Mohd Fadhil Md Din, Santhana Krishnan, Shazwin Mat Taib and Fadzlin Md Sairan
Sustainable recycling activities in higher education institutions (HEIs) are crucial as it serves as a common benchmark to a community that is socially and environmentally…
Abstract
Sustainable recycling activities in higher education institutions (HEIs) are crucial as it serves as a common benchmark to a community that is socially and environmentally responsible. This chapter presents a suitable case study of HEIs in Malaysia reporting on recycling rate, monitoring the recycling patterns, and matching the significant recycling policy in the HEIs. Therefore, four HEIs including Universiti Teknologi Malaysia (UTM), Universiti Malaya (UM), Universiti Kebangsaan Malaysia (UKM) and Universiti Putra Malaysia (UPM) were selected as the suitable case studies to examine the practices of recycling activities. These four HEIs are Malaysian research universities that are ranked in the top 300 in the UI Green Metric World University Rankings. Several findings and previous works were reviewed; further steps to set a recycling target were identified and served as a guidance of the standard recycling rate. Results showed the selected HEIs reflected the low percentage of recycling rate in the range of 0.03–29.26%, depending on its practices and policy. Three phases of planning have been structured to target the recycling rate at HEIs in Malaysia with the First Plan (2025), Second Plan (2035) and Third Plan (2040) towards the recycling rates of 20%, 30% and 40%, respectively. The recommendations for the HEIs formulate recycling policies and recycling rates, and for waste management, academia and research centres to play a more active role in increasing the efficiency of recycling activities for a positive impact on the recycling rate in HEIs.
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In 1978 the plastic bottle was introduced nationwide. In the thirteen years since that historic (and some say environmentally devastating) occasion, the consumer increasingly has…
Abstract
In 1978 the plastic bottle was introduced nationwide. In the thirteen years since that historic (and some say environmentally devastating) occasion, the consumer increasingly has embraced plastic packaging. Each American uses about 190 pounds of plastic per year, according to Earthworks Group, and about 60 pounds of it is discarded within minutes or seconds after opening. The plastic bottle is king. American consumers use 2.5 million plastic bottles every hour.
A systems perspective of waste management allows an integratedapproach not only to the five basic functional elements of wastemanagement itself (generation, reduction, collection…
Abstract
A systems perspective of waste management allows an integrated approach not only to the five basic functional elements of waste management itself (generation, reduction, collection, recycling, disposal), but to the problems arising at the interfaces with the management of energy, nature conservation, environmental protection, economic factors like unemployment and productivity, etc. This monograph separately describes present practices and the problems to be solved in each of the functional areas of waste management and at the important interfaces. Strategies for more efficient control are then proposed from a systems perspective. Systematic and objective means of solving problems become possible leading to optimal management and a positive contribution to economic development, not least through resource conservation. India is the particular context within which waste generation and management are discussed. In considering waste disposal techniques, special attention is given to sewage and radioactive wastes.
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Noushra Shamreen Amode, Prakash N. K. Deenapanray and Pratima Jeetah
The chapter aims to evaluate the efficacy of stakeholder participation in the solid waste management system of Mauritius in view of providing a possible mechanism to attain the…
Abstract
Purpose
The chapter aims to evaluate the efficacy of stakeholder participation in the solid waste management system of Mauritius in view of providing a possible mechanism to attain the goals of a sustainable waste management framework.
Methodology
The study employs qualitative indicators, namely, User Inclusivity and Producer Inclusivity of the Wasteaware Benchmark Indicators. Secondary data are used to conduct a critical and comprehensive analysis of the sub-indicators falling under each of the two main indicators to determine the overall compliance level with respect to stakeholder engagement of the waste management sector of Mauritius.
Findings
The results of the study show a LOW/MEDIUM compliance level for both User Inclusivity and Provider Inclusivity indicators, which indicates that improvement is required in the stakeholder engagement mechanism in Mauritius. The main weaknesses identified comprise of lack of an adequate legal framework with clear definition of waste types with regards to segregation, especially for non-hazardous wastes, low efficiency of sustainable waste management awareness campaigns and lack of inclusion of the informal sector. The main strengths identified consist of a proper bidding mechanism in place and a good level of equity in the provision of waste management services with respect to comingled waste collection. Suggested improvement areas include a revamping of the existing legal framework related to waste management to cater for higher inclusivity of all stakeholders together with including sustainable waste management topics in the formal education curriculum.
Originality
The User Inclusivity and Producer Inclusivity indicators were previously applied only to cities to measure the level of stakeholder participation, but this study has demonstrated that these indicators can also be adopted on a nation-wide level to evaluate stakeholder engagement. The use of these indicators together with secondary data presents a less time-consuming method to assess stakeholder participation in the waste sector, which can be particularly useful for Small Island Developing States.
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Terrance L. Pohlen and M. Theodore Farris
Recycling has experienced rapid growth as a technique to reduce thesolid waste stream volume. Despite the public appeal and acceptance ofrecycling, the reverse logistics channels…
Abstract
Recycling has experienced rapid growth as a technique to reduce the solid waste stream volume. Despite the public appeal and acceptance of recycling, the reverse logistics channels used in recycling have received minimal attention. However, the reverse channels′ membership and capabilities have a significant impact on the efficiency of processing recyclable material for remanufacture into recycled products. Differing product characteristics, extensive handling, and low density shipments pose considerable obstacles to establishing an efficient reverse channel for recyclable commodities. A framework, based on interviews and current literature, describes the reverse logistics channel structure, membership and functions, and provides a foundation for identifying the issues affecting efficiency and marketability, and possible future directions for improving efficiency within the reverse channel structure.
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Environmental engineering is primarily concerned with the application of technology to the urgent tasks of cleaning up our environment. Its practitioners generally attempt to cope…
Abstract
Environmental engineering is primarily concerned with the application of technology to the urgent tasks of cleaning up our environment. Its practitioners generally attempt to cope with the problems of streams and waterways polluted by sewage and industrial waste, oceans damaged by oil spills and sewage sludge dumpings, air polluted with noxious fumes and land abused by solid waste disposal. But that is not all that they do. The recent energy crisis has sharply brought into focus the need for alternate energy strategies, including energy extraction from solid waste. Under current estimates, the United States will produce approximately 340 million tons of solid waste by 1980. This is equivalent to one ton of solid waste per person per year. The most widely used methods of waste disposal right now are dumping, incineration and sanitary landfill. They are expensive and they cause pollution. Instead, solid waste can be burned to produce steam which can be used for heating or to generate electricity. It can also be converted to pyrolysis gas or oil, which can be stored or transported. It is from this standpoint that environmental engineering assumes considerable importance. A report which presents an overview of the state of the art in this area is the Resource Recovery from Municipal Solid Waste. Other pertinent guides include Energy from Solid Waste, Conversion of Refuse to Energy, Recycling and Reclaiming of Municipal Solid Wastes, Resource Recovery and Recycling Handbook of Industrial Wastes, and Wasteheat Management Guidebook. No project of this nature can be undertaken without government assistance. A description of the activities of the Federal Solid Waste Management Program is available from EPA's Solid Waste Recycling Projects: A National Directory.
Hamdiyah Alhassan, Felix Ankomah Asante, Martin Oteng-Ababio and Simon Bawakyillenuo
The purpose of this paper is to examine the factors that encourage households’ source separation behaviour in Accra and Tamale Metropolises in Ghana.
Abstract
Purpose
The purpose of this paper is to examine the factors that encourage households’ source separation behaviour in Accra and Tamale Metropolises in Ghana.
Design/methodology/approach
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.
Findings
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.
Research limitations/implications
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.
Practical implications
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.
Originality/value
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.
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Elena Moczygemba and Vesna Smaka‐Kincl
The purpose of this paper is to depict how a method of high collection and recycling rates can be easily achieved in communal solid waste management. The implementation of such a…
Abstract
Purpose
The purpose of this paper is to depict how a method of high collection and recycling rates can be easily achieved in communal solid waste management. The implementation of such a strategy means tremendous strain relief for the budget of municipalities and the environment.
Design/methodology/approach
An integrated approach to communal solid waste management is outlined which makes it possible to achieve recycling rates of up to 69 per cent. “Integrated” refers to the integration of different aspects of sustainability, the adjustment of the conception to the habitat scale and the co‐operation with different stakeholders such as citizens and domiciled companies.
Findings
The paper gives two examples of integrated plans of communal waste management. The strategy of the City of Graz is presented, as well as the conception of the Slovene City of Maribor. In Graz, public information on measures of waste prevention and separate collection by waste advisors, and companies' training within ECOPROFIT, as well as an intelligent collection and recycling system ensure that 69 per cent of the total arising waste can be recycled and only 14 per cent of the arising waste has to be deposited. In Maribor, the total waste going into landfill in 2014 can be reduced by 71 per cent (i.e. 71 per cent of the predicted total waste in 2014) if changes in the system are made.
Originality/value
The paper describes a new method elaborated by Cleaner Production Center Austria which shows how municipalities can improve the local environment and at the same time save money by implementing a clever solid waste management strategy.
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