A decision-making model for more sustainable municipal solid waste management

Sustainable Municipal Solid Waste management has remained a big challenge in Africa and other resource constrained settings. However, to achieve sustainability, the gaps in governance of waste management need to be addressed speedily as populations are expanding rapidly, far exceeding available infrastructure and resources. Ruiru subcounty has a rapidly expanding population which has not been matched with sustainable waste management in commercial and residential sectors. This study sought to establish the influence of governance on Sustainable Municipal Solid Waste management in Ruiru Sub-County. Mixed methods research approach and descriptive research design were used in both data collection and analysis. This involved administration of Questionnaires, interviews and observation checklist through an online platform Kobo Collect. Results of the study showed that the County Government and subsequent sub-counties are responsible for waste management. Despites this mandate there are heaps of waste remain in commercial and residential areas. This is attributed to various governance challenges such as lack of prioritization of waste management, limited financial and human resources, minimal community participation, disregard of informal players in waste management cycle, weak implementation and enforcement of waste management policies. While it is desirable to attain sustainable solid waste management in Ruiru, and while the national legal frameworks are in place, there are major challenges and gaps in solid waste governance. Therefore, this study concludes enforceability of mechanisms, adequacy of funding, wholistic involvement of all players remain daunting. Unless these are addressed, sustainable waste management will only remain an unattainable goal.

This chapter proposes for the introduction of a recycling system in developing countries to enhance sustainable municipal solid waste (MSW) management. Poor infrastructures, coupled with inadequate resources and lack of funding, work against the optimization of a MSW disposal service. Authorities in charge of waste management need to change not only behaviors, but modernize their processes. Recycling technology is a key part of the solution. A model has been developed which suggest the involvement of stakeholders to achieve meaningful sustainable MSWM. This can be achieved by recognizing the role of the informal sector through community-based organizations, Non-Governmental Organizations (NGOs), and the private sector. The open dump approach is leading to severe environmental consequences as groundwater and soil is been contaminated. In this chapter, an integrated municipal solid waste management approach was developed with a model to help achieve sustainable municipal solid waste management. Resource recovery, not waste disposal, must be the ultimate goal with clearly defined end user markets so that the recovery loop is complete. Mandatory sorting of waste at household level would help greatly in making recycling activity successful.

Chula model for sustainable municipal solid waste management in university canteens

This paper presents a road map for sustainable Municipal Solid Waste Management (MSWM) in Lagos, using Scotland as a case study of best practice. Lagos status as an industrial and commercial hub of the Nigerian economy, complemented by its rapid population growth and urbanisation, has complicated the problem of achieving sustainable solid waste management, thereby making it a subject of concern in the literature. Various authors have expressed issues with the types of municipal solid waste generated, waste treatments, and barriers to sustainable municipal solid waste management in Lagos. The existing collection service inosho Lagos has been rated inefficient despite the weekly average evacuation exercise, as waste accumulation exceeded the existing storage and collection facilities, resulting in an unclean environment and significant environmental degradation. This study provides a view of waste management practices in Lagos and the lessons Lagos can learnt from Scotland in achieving sustainable municipal solid waste practice. A total of eight interviews were conducted with authorities and experts involved in municipal solid waste in both Lagos and Scotland to gather their experience and opinions in their respective regions and analyse them thematically. The findings from this research highlighted some initiatives directed towards promoting sustainable waste practices in both Lagos and Scotland. These empirical findings were used to propose a framework that could be used to achieve a circular economy in Lagos and identify areas for improvement in Scotland. This would promote the creation of more jobs and a subsequent reduction in carbon emissions and raw material importation in both regions. Future work should involve informer actors in interviews to get a broader view and increase the accuracy of the data collected on MSW practice in Lagos and provide analysis of strategies used and their impact to engage communities and promote behaviour change towards sustainable MSW management practice in Scotland. Keywords: Municipal Solid Waste, Management Practice, Lagos, Scotland. Proceedings Citation Format Olaniyi, T.K. & Ajayi, A.J. Jane (2023): A Road Map for Sustainable Municipal Solid Waste Management In Lagos: Using Scotland As A Case Study Of Best Practice.Proceedings of the 37th iSTEAMS Multidisciplinary Cross-Border Conference. 30th October – 1st November, 2023. Academic City University College, Accra, Ghana. Pp 43-56 dx.doi.org/10.22624/AIMS/ACCRACROSSBORDER2023V2P4

Towards integrated, and sustainable municipal solid waste management system in Shashemane city administration, Ethiopia

Effective management of municipal solid waste is a pressing issue for numerous developing countries, including Sri Lanka. Despite efforts to implement eco-friendly waste disposal methods, many nations struggle with open landfills and unregulated dumping, causing detrimental effects on both public health and the environment. This study delves into the impact of community participation on solid waste management, with Sri Lanka serving as a case study. Urbanization and shifting consumption patterns exacerbate the challenges surrounding solid waste management. In Sri Lanka's urban areas, the absence of adequate waste management mechanisms emphasizes the necessity for active community involvement. Identifying the types and sources of solid waste is crucial for devising efficient waste management strategies. Concepts like the 3R approach (reduce, reuse, recycle) and composting play pivotal roles in sustainable waste management. Employing logistic regression analysis, the study assesses how community participation influences solid waste management. Results indicate that community involvement positively affects waste reduction, recycling, and composting efforts. However, while a considerable portion of the community actively engages in waste reduction, participation in waste reuse and recycling is limited. This highlights the significance of promoting the 3R concept and enhancing community involvement in waste management endeavors. Overall, the study underscores the instrumental role of community participation in achieving sustainable municipal solid waste management. Recommendations include prioritizing the 3R approach, investing in composting initiatives, and fostering greater community engagement in waste management practices. By adopting these strategies, municipalities can effectively address solid waste challenges while promoting environmental sustainability and public health.

The aim of this study is to determine the effect of the separation of solid waste at the source on three different sustainable solid waste management scenarios using the analytic hierarchy process. In this context, the type of source separation method that would be most appropriate for three solid waste management scenarios was investigated (A1: material recycling facility + sanitary landfill; A2: material recycling facility + biological processes + sanitary landfill, and A3: thermal processes + biological processes + sanitary landfill) based on well-known solid waste management alternatives. Firstly, solid waste management scenarios were determined as decision points. Secondly, three solid waste collection options at the source (mixed: there is only one type of bin for all solid waste components; binary: paper + metal + plastic + glass, kitchen organics, and others; and triple: paper + metal + plastic + glass, kitchen organics, and others) were chosen as the main criteria affecting the decision points. Thirdly, fifteen sub-criteria were chosen based on the main criteria. In the process, not only the main and sub-criteria, but also stakeholders’ contributions are vital. For the pairwise comparison of all the criteria to be used in the study, the opinions of thirteen experts as stakeholders were obtained through face-to-face interviews. Within the scope of the zero waste vision, with a focus on environmental protection, the analytical hierarchy process was applied via pairwise comparisons of decision points and factors affecting the decision points. According to the results, in the case of mixed collection at the source, high preference rates were obtained for A1 as the decision point in terms of environmental (0.665), economic (0.699), social (0.510), and technical (0.544) criteria. In the case of binary separation at the source, A1 has high preference rates as the decision point in terms of environmental (0.553), economic (0.673), social (0.507), and technical (0.632) criteria. In the case of triple separation at the source, it is calculated that the A1 alternative has the highest preference values as the decision point in terms of environmental (0.558), economic (0.669), social (0.514), and technical criteria (0.611). Hence, the determining factor in the efficient integration of sustainable waste management with smart technologies is how waste is managed at the source. It is hoped that the results obtained in this study within the scope of the zero waste vision will assist decision-makers during sustainable municipal solid waste management processes.

This research proposes for the introduction of a recycling system in the Gambia to enhance sustainable municipal solid waste management. Poor infrastructures, coupled with inadequate resources and lack of funding, work against the optimization of a MSW disposal service. In the authors’ view, authorities in charge of waste management need to change not only behaviors, but modernize their processes. Recycling technology is a key part of the solution. A model has been developed which suggest the involvement of stakeholders to achieve meaningful sustainable MSWM. This can be achieved by recognizing the role of the informal sector through community-based organizations, Non-Governmental Organizations (NGOs), and the private sector. The open dump approach is leading to severe environmental consequences as the groundwater and soil within the dump is been contaminated. In this study, an integrated municipal solid waste management approach was developed with a model to help achieve sustainable municipal solid waste management. Resource recovery, not waste disposal, must be the ultimate goal with clearly defined end user markets so that the recovery loop is complete. Mandatory sorting of waste at household level would help greatly in making recycling activity successful.

PurposeThe research objectives are as follows: to understand the situation of solid waste management in the Makham Tia Subdistrict Administrative Organization, Surat Thani Province, Thailand; identify the patterns in household waste generation and 3Rs behavior (recycle, reuse and reduce waste); and formulate sustainable municipal solid waste management guidelines.Design/methodology/approachThis study aimed to propose the solution by using data analysis and a participatory research approach to set the guidelines for sustainable community waste management in a low-budget area. A survey of household behavior was done with questionnaires. Mixed clustering using the Gower coefficient was performed to assess the categorical socio-demographic variables along with the numeric variables related to the 3Rs behavior. The guidelines for waste management were generated based on the characteristics of the household groups.FindingsThe guidelines for waste management were generated based on the characteristics of the household groups. An appropriate practical plan for municipal solid waste management in Makham Tia Subdistrict was proposed in this work. The study showed that the guidelines were implemented and revised by members of the community, and this led to the development of sustainable community solid waste management for the future.Originality/valueThe goal of this study was to provide a solution for sustainable community waste management in a low-budget location by using data mining techniques and a participatory research approach. The study showed that the guidelines were implemented and revised by members of the community, and this led to the development of sustainable community solid waste management for the future.

Community participation (CP) in municipal solid waste management (MSWM) is a strategy introduced by UN Sustainable Cities Programme (SCP) in the early 1990s to developing countries. It aimed at complementing local governments‟ limited resources and capacities overwhelmed by rapid urbanization to managing solid waste sustainably. Tanzania adopted the strategy in 1992 under a market oriented economy starting with Dar es Salaam and then it was replicated to other urban areas of the country including Morogoro Municipality in 1998. This strategy has been received with different feelings and outcomes in Tanzania. In some situations, community participation through CBOs has failed to manage solid waste in their respective communities. This study identified Kikundi cha Usafi wa Mazingira (KIUM) CBO as a success story of community participation in municipal solid waste management project in Morogoro Municipality by achieving 50% of solid waste collection. The study employed the Institutional Economic Theory (IET) and Solid Waste Service Provision Linkage Triangle Model to the study‟s conceptual framework to analyse CP in municipal solid waste management using organizational, legal, resource, coordination, benefits and effective community participation variables in a market-oriented economy. Participatory Urban Appraisal (PUA) using Focused Group Discussions (FGDs) and researcher‟s in-depth interviews were employed to interview the CBO‟s leaders and community members in Mji Mkuu Ward where KIUM operates. The findings showed that a well organized CBO as KIUM with committed leadership which scored 50% in self-managing MSW service provision has the potentiality of achieving sustainable MSWM; if such poor communities-based groups are adequately given an enabling environment. The local government has not given enough encouragement to CBOs towards achieving sustainable municipal solid waste management.

Purpose – This paper examined the current status of municipal solid waste management across Nigeria. The core aspects covered are generation, characterization, collection, scavenging, open dumping, disposal and environmental implications of poor solid waste management. The purpose of this paper is to present a comprehensive overview of the current state of municipal solid waste management in Nigeria. Design/methodology/approach – This study was executed by a combination of an extensive literature search and field study. Solid waste generation rates for 31 Nigerian cities were obtained from literature. In addition, characteristics of municipal solid waste from 26 Nigerian cities were also obtained from literature. Other aspects such as characterization of solid waste obtained from final dumpsite and heavy metals accumulation in solid waste dumpsites were undertaken first hand. Findings – Solid waste generation rate was found to vary from 0.13 kg/capita/day in Ogbomosho to 0.71 kg/capita/day in Ado-Ekiti. Factors affecting solid waste generation rates were identified. Typically, food waste was found to constitute close to 50 percent of overall municipal solid waste in Nigerian cities. This study shows that the rate of generation of plastics, water proof materials and diapers has assumed an upward trend. Due to the dysfunctional state of many municipal waste management authorities, many cities have been overrun by open dumps. For instance, more than 50 percent of residents of Maiduguri in northern Nigeria and Ughelli in southern Nigeria dispose of their waste in open dumps. Indiscriminate disposal of waste has also resulted in the preponderance of toxic heavy metals in agricultural soils and consequent bioaccumulation in plants as well as groundwater contamination. Research limitations/implications – The main limitation of this research is municipal waste management authorities do not have relevant data. Hence, there was heavy reliance on published materials. The status of waste management in Nigeria is very deplorable and therefore poses serious threats to public and environmental health. There is urgent need for both government and individuals to adopt holistic and sustainable waste management strategies in order to safeguard public/environmental health. Practical implications – Findings from this paper can form a veritable resource for the formulation and implementation of sustainable municipal solid waste management framework and strategies in Nigeria. Originality/value – While most studies on municipal solid waste management in Nigeria are focussed on selected cities of interest, this particular study cuts across most cities of Nigeria in order to present a broader and holistic view of municipal solid waste management in Nigeria. The paper has also unraveled core municipal solid waste management challenges facing Nigerian cities.

Purpose: This paper introduces a multi-period, multi-objective model for creating an integrated, sustainable municipal solid waste management supply chain. The model includes source separation and a reward-penalty mechanism, aiming to minimize total system costs, greenhouse gas emissions, and environmental impacts on residential areas. Many countries strive to develop efficient solid waste management systems (SWMS) that handle and dispose of daily waste cost-effectively while maintaining sustainability. These systems include waste sources, collection stations, landfills, incinerators, recycling plants, and a transportation network. Methodology: A systematic literature review was conducted on existing literature from various studies. Recent studies were used for this systematic review of sustainable municipal solid waste management strategies and practices. Findings: Decision-makers must design or reconfigure a sustainable MSWM to determine the optimal supply chain network for treating and disposing of daily waste effectively. This paper suggests sustainable waste management strategies and practices from various countries, aiming to determine the best number and locations for facilities and optimal waste flow within the system to minimize daily costs. The primary contribution of this review is the theoretical development of sustainable MSWM practices applicable worldwide. Unique contribution to theory, policy and practice: Cooperation between the private and public sectors involved in solid waste management and the circular economy is imperative to ensure the technical, financial, and social sustainability of waste management systems. Large-scale awareness programs on solid waste management and the circular economy should be implemented, focusing on fostering environmentally responsible behaviors and attitudes, promoting sorting, selective collection, and the recovery of materials and energy from waste.

Municipal solid waste constitutes environmental challenges globally, especially in developing countries, due to increasing waste generation, population growth, inadequate infrastructure, lack of data and poor planning. This study aims to conduct a comprehensive waste audit on the municipal solid waste generated in Aba, a metropolis in southeastern Nigeria. Aba is a commercial city considered the messiest because of the massive municipal solid waste generation and poor management. The study investigated the energy potential and waste regeneration. Municipal solid waste data was sought to provide insight into the quantity and composition of municipal solid waste. The methodology was site-based, in line with the standard test method for determining unprocessed municipal solid waste (ASTM-D5231-92) and SowaCLINK software, a computer-based environmental application, was used for characterization. Linear extrapolation was adopted to quantify the rate of municipal solid waste generated. The geometric mean was applied to forecast the area’s population for a 10-year design period. The chemical elements of the characterized municipal solid waste were utilized based on the ASTM-D5291 standard for municipal solid waste thermochemical conversion, and the high and low heating values were analyzed. The outcomes provided energy recovery potential, the electrical power potential, and the power to the grid of electrical power of the municipal solid waste. The results obtained were 0.7813 kg/p/d and 490,268 t/y for a population of 1,719,185 persons. The percentage of the municipal solid waste components with energy potential was 71%, comprising 48% combustible and 23% organic components on average. The high heating value computed was 176.5 MJ/kg, and the low heating value was 14 MJ/kg. The energy recovery potential was 3,709,463 MWh, the electrical power potential was 38,680 MW, and the power to the grid was 26.1 MW daily. The research reveals a promising direction in transitioning from the linear economy of municipal solid waste management toward implementing an integrated sustainable municipal solid waste management based on the circular economy model. The study recommends adopting detailed steps to proffer solutions to the environmental challenges associated with municipal solid waste in most low-middle-income countries to achieve sustainable municipal solid waste management while generating electricity and bio-fertilizers through incineration and anaerobic digestion.

Sustainable Municipal Solid Waste (MSW) management at military solutions necessitates a combined approach that includes waste reduction, alternative disposal techniques, and increased recycling. Military installations are unique because they often represent large employers in the region in which they are located, thereby making any practices they employ impact overall waste management strategies of the region. Solutions for waste sustainability will be dependent on operational directives and base location, availability of resources such as water and energy, and size of population. Presented in this paper are descriptions of available waste strategies that can be used to support sustainable waste management. Results presented indicate source reduction and recycling to be the most sustainable solutions. However, new waste-to-energy plants and composting have potential to improve on these well proven techniques and allow military installations to achieve sustainable waste management.

PurposeThe purpose of this paper is to review the present municipal solid wastes (MSWs) management system, from an engineering management (EM) perspective, for the City of Kitwe while proposing a levers-driven sustainable municipal solid waste management (MSWM) model focussing on improving waste management (WM).Design/methodology/approachThe research work involves four stages. First, a comprehensive review of literature is conducted on MSWM. Second, structured interviews are conducted with key experts in solid waste management in the City of Kitwe in order to enhance the knowledge inputs. Third, direct observations and an interview with a WM driver are conducted in order to understand; the collection, disposal and treatment options for MSWs. Lastly, a sustainable model for managing MSWs is proposedFindingsThe research findings indicate that the existing MSW system for the city is highly unsustainable and lacks EM methodologies. There are still a number of challenges in the management of MSWs which include: lack of proper collection and storage of MSWs; lack of an engineered landfill; lack of waste recovery and treatment systems; and lack of public education aimed at reducing and separating MSWs.Practical implicationsA correct and detailed database for waste generation, collection, treatment and disposal is needed for the City of Kitwe. The system is necessary for WM resources allocation as well as for planning sustainable WM projects. The proposed model has been developed based on the actual observations, data collection and analysis.Originality/valueThe research identifies a gap in the management of MSWs for the City of Kitwe. This work is original as no similar MSW model has been proposed globally and specific for a developing economy such as Africa.