Solid Waste Management Process Research Articles

Anaerobic digestion of municipal solid waste produced by the city of Algiers using life cycle assessment

This study analyses the life cycle assessment of anaerobic digestion process of municipal solid waste management (MSWM) produced by Algiers city. Some keys parameters of the processes are then modified to analyze the "hot spots" and perform a sensitivity analysis to identify their influence on the results. Data for the inventory came from actual city facilities, and background process information came from Eco invent version 3.1 of SimaPro 8.1 software. The analyzed process contribution indicates that the global warming potential is affected by the anaerobic digestion because of the NOx and CO emissions from the thermal processes of biogas burning and fuel oil combustion for digesters heating. Furthermore, plastics recycling is environmentally beneficial because of net savings. The energy valorization of biogas produces the least amount of environmental damage, eliminating 403.06 kg CO2 eq/ton of waste, saving 18.2 E+09 MJ/ton of fossil fuels, and producing 2.8 E+08 kWhel/year, or 6% of the city's annual electricity consumption.

DEVELOPMENT OF WATER SOFTENING METHOD BY USING NATURAL ADSORBENT: TEMPLE WASTE

Nowadays, Heavy metals are the prime concern due to their adverse effects on the environment and human beings. It is discharged from various industries such as mining, metal finishing, electroplating, glass, textiles, ceramics, and storage batteries. Copper is the metal used in many electronic devices and involved in other production processes. On the other hand, the amount of floral waste generated from temples and festivals/celebrations are increasing day by day, its impact on the solid waste management process is huge and it creates a fouling smell when it is disposed of improperly. Therefore, the present aim of the project is to utilize the waste flowers for the development of Biochar where it is used in the removal of heavy metal i.e., copper from synthetic wastewater. The other advantage of floral Biochar is the increase in soil organic matter (SOM) which can influence the soil microclimate, microbial community structure, biomass turnover, and mineralization of nutrients. The preparation, physicochemical properties, and adsorption mechanisms of floral waste Biochar in removing copper metal from synthetic wastewater have been discussed in this study. Key Words: optics, photonics, light, lasers, templates, journals

Boboiboy Animation Episode, Care of the Earth: Managing Solid Waste with the 3R Method

The increasing volume of domestic solid waste needs a sustainable solution to avoid complex environmental issues. The 3R practice of reuse, reduce, and recycle is said to be one of the efforts taken to educate the community on how to manage residential solid waste. A practice that wants to be cultured in the community must begin as early as childhood. As the saying goes, strike while the iron is hot. The application of environmental care practices to the younger generation can be implemented in the form of entertainment by inserting animation which attracts children’s attention. This study analyses solid waste management with the 3R method featured in Boboiboy animation. There are three episodes of Boboiboy’s animation of “Jagalah Bumi” used as the main study text (episodes 21, 22, and 23). Based on this analysis, it was found that this animation have successfully highlighted the 3R concept in three episodes of "Jagalah Bumi" including showing how the does solid waste management process is carried out at the landfill. The explanation of this method was successfully presented clearly and easily understood by the audience. This is able to influence and leave an impression on the audience indirectly.

Exposure, knowledge, and perceptions of hazards associated with solid waste management at the household level in jigjiga town, northeast Ethiopia

The goal of this study is to look into household exposure, knowledge, and perceptions of the risks connected with solid waste management in Jigjiga, Ethiopia. Jigjiga is currently grappling with overflowing landfills and limited waste collection, resulting in open dumping and serious health concerns such as disease transmission. The goal of this research is to better understand how Jigjiga residents interact with the waste management system, as well as their perceptions of the health and environmental issues that arise. The study employed a cross-sectional design using a multistage sampling technique. Two kebeles were used to select 200 families living near and far from the dumpsite. Questionnaires were utilized to collect data on demographics, exposure, knowledge, and risk perception. The analysis was carried out utilizing descriptive statistics and binary logistic regression.A survey of 357 households in Jigjiga, Ethiopia, found concerning trends in solid waste management. 78 % of the population visits the dumpsite on a weekly basis, with the majority residing within a 3-km radius. Almost half (44.5 %) reported monthly visits. Despite this, more than 90 % of locals are aware of the health dangers connected with poor waste management. 72 % of individuals believe that inadequate waste disposal causes to illness, with diarrhea being the most prevalent health concern. This study sheds light on the exposure, understanding, and perceptions of risks associated with solid waste management at the household level in Jigjiga, Ethiopia. The findings highlight the significance of improving solid waste management processes to mitigate the negative consequences on human health, the environment, and the economy.

A review on the evaluation models and impact factors of greenhouse gas emissions from municipal solid waste management processes.

The total amount of global municipal solid waste (MSW) will reach 3.5 billion tons by 2050, thereby bringing tremendous environmental pressure, especially global warming. Large amounts of greenhouse gases (GHGs) have been released during MSW management (MSWM). Accounting for GHG emissions is a prerequisite for providing recommendations on appropriate treatment options to mitigate emissions from MSWM systems. There are many methods involved in estimating emissions. This paper summarizes the computing models commonly used in each process of the integrated MSWM system and emphasizes the influence of parameters and other factors. Compared with other disposal methods, landfilling has the highest emissions, commonly estimated using first-order decay (FOD) methods. Emission reduction can be realized through waste to energy (WtE) and resource recovery measures. IPCC is commonly used for calculating direct emissions, while LCA-based models can calculate emissions including upstream and downstream processes, whose results depend on assumptions and system boundaries. The estimation results of models vary greatly and are difficult to compare with each other. Besides, large gaps exist between the default emission factors (EFs) provided by models and those F measured in specific facilities. These findings provide a systematic view for a bettering understanding of MSW emissions as well as the estimating methods and also reveal the key points that need be developed in the future.

A review towards developing a hierarchical model for sustainable hospital solid waste management in rural areas of Zimbabwe.

Management of solid waste from rural hospitals is amongst problems affecting Zimbabwe due to diseases, population, and hospital increase. Solid waste from rural hospitals is receiving little attention translating to environmental health problems. Therefore, 101 secondary sources were used to write a paper aiming to proffer a hierarchical model to achieve sustainable solid waste management at rural hospitals. Rural hospitals' solid waste encompasses electronic waste, sharps, pharmaceutical, pathological, radioactive, chemical, infectious, and general waste. General solid waste from rural hospitals is between 77.35 and 79% whilst hazardous waste is between 21 and 22.65%. Solid waste increase add burden to nearly incapacitated rural hospitals. Rural hospital solid waste management processes include storage, transportation, treatment methods like autoclaving and chlorination, waste reduction alternatives, and disposal. Disposal strategies involve open pits, open burning, dumping, and incineration. Rural hospital solid waste management is guided by legislation, policies, guidelines, and conventions. Effectiveness of legal framework is limited by economic and socio-political problems. Rural hospital solid waste management remain inappropriate causing environmental health risks. Developed hierarchical model can narrow the route to attain sustainable management of rural hospitals' solid waste. Proposed hierarchical model consists of five-layered strategies and acted as a guide for identifying and ranking approaches to manage rural hospitals' solid waste. Additionally, Zimbabwean government, Environmental Management Agency and Ministry of Health is recommended to collaborate to provide sufficient resources to rural hospitals whilst enforcing legal framework. Integration of all hierarchical model's elements is essential whereas all-stakeholder involvement and solid waste minimisation approaches are significant at rural hospitals.

Inhibition of pathogenic microorganisms in solid organic waste via black soldier fly larvae-mediated management

Inadequately managed solid organic waste generation poses a threat to the environment and human health globally. Biotransformation with the black soldier fly larvae (BSFL) is emerging as talent technology for solid waste management. However, there is a lack of understanding of whether BSFL can effectively suppress potential pathogenic microorganisms during management and the underlying mechanisms. In this study, we investigated the temporal variations of microorganisms in two common types of solid waste, i.e., kitchen waste (KW) and pig manure (PM). Natural composting and composting with BSFL under three different pH levels (pH 5, 7, and 9) were established to explore their impact on microbial communities in compost and the gut of BSFL. The results showed that the compost of kitchen waste and pig manure led to an increase in relative abundance of various potentially pathogenic bacteria. Temporal gradient analyses revealed that the most substantial reduction in the relative abundance and diversity of potentially pathogenic microorganisms occurred when the initial pH of both two wastes were adjusted to 7 upon the introduction of BSFL. Through network and pls-pm analysis, it was discovered that the gut microbiota of BSFL occupied an ecological niche in the compost, inhibiting the proliferation of potentially pathogenic microorganisms. This study has revealed the potential of BSFL in reducing public health risks during the solid waste management process, providing robust support for sustainable waste management.

Analysing municipal officials' perceptions on solid waste management process and clean India mission in Thanjavur district, India

Analysing municipal officials' perceptions on solid waste management process and clean India mission in Thanjavur district, India

Analysis and Proposal for Actors' Roles in Solid Waste Management in the City of Fortaleza (Brazil)

The continuous population growth and the high rate of urbanization of cities, added to the growing consumption of products, result in the proportional generation of solid waste that brings various harms, such as air and water pollution, soil contamination and degradation, proliferation of various diseases and devaluation of urban real estate. In Fortaleza, regardless of its size or number of inhabitants, waste is collected through the action of collectors belonging to the most miserable layers of the population, without adequate preparation to carry out such activity and by a mega private company hired by the City Hall, with serious doubts about the execution of your work. This article analyzes the roles of public and private actors involved in the solid waste management process in the city of Fortaleza, Brazil, and suggests a new configuration for this operation that takes into account the needs of the community and more effective and necessary actions such as collection selection, review of waste disposal, use of gas and fertilizer generated in sanitary landfills, and greater attention to the work of collectors. Fortaleza is a capital that generates millions of tons of solid waste per year, with an obvious difficulty in dealing with this, caused by the inefficiency in solving the associated problems. We used a qualitative methodology for exploratory research, based on interviews with public and private managers related to solid waste management. We analysed the interviews through Content Analysis, using the Iramuteq software, and unveiled the roles of the different actors.

Environmental Management System for Solid Medical Waste Management In Pariaman City Hospital

This study aims to ensure the conformity of medical waste management with the Government Regulation of the Republic of Indonesia Number 7 of 2019 and to determine the implementation process of solid medical waste management of hospitals in Pariaman City, as well as to determine the value of environmental performance based on ISO14001. This research is descriptive qualitative research conducted in February - March 2022 at a hospital in Pariaman City. Sample collection techniques through interviews, filling out environmental performance assessment sheets based on ISO 14001, and documentation. The interview is conducted using a list of questions that have been prepared in advance. Next, descriptive statistical analysis was carried out. The results of this study are The process of solid medical waste management of hospitals in Pariaman City has referred to the Government Regulation of the Republic of Indonesia Number 7 of 2019, although the results are not all appropriate

Translation of the management control system in a privatised solid waste management network

PurposeThe purpose of this paper is to help better understand the translation process of the management control system (MCS) of privatised solid waste management (SWM) towards creating a stable network.Design/methodology/approachDrawing on the actor network theory (ANT), the case of a privatised SWM was studied. Data were collected from all entities involved in the privatisation process of SWM, which include Department A, Corporation X and the private sector concessionaire. Six documents were reviewed, 20 interviews were conducted and two observations were carried out.FindingsThe findings reveal that the control mechanism of SWM is complex, involving the interaction between human and non-human actors. Non-human actors include the key performance indicators (KPIs) and the concessionaire agreement (CA), which are the main control mechanisms towards creating a stable SWM network. Essentially, stability is achieved when the KPIs and CA can influence the activities of both intra- and inter-organisational relationships.Originality/valueThis paper provides a better understanding of the translation process of the MCS that adds to the stability of the network of a privatised SWM from the lens of the ANT.

Perception of the Current Situation of Urban Solid Waste in the Municipality of Quelimane, Mozambique

This paper analyzed the solid waste management process in the municipality of Quelimane, Mozambique. The methodology of this study is based on reviewing the scientific literature through fieldwork and observations on how urban solid waste management reaches its final destination. For that purpose, the population selected for this article was interviewed for a better perspective. As a result, it was possible to obtain answers that impacted the public management of the municipality since the level of attention to control depends on the location of the houses and also lacks a great deal of training for the workers who collect solid waste in the Quelimane region, along with awareness, environmental education programs for the population.

Solid waste management in the context of the waste hierarchy and circular economy frameworks: An international critical review.

Growing populations and consumption drive the challenges of solid waste management (SWM); globalization of transport, food production, and trade, including waste trading, distributes risks worldwide. Using waste hierarchy (WH; reduce, reuse, and recycle) and circular economy (CE) concepts, we updated a conceptual waste framework used by international organizations to evaluate SWM practices. We identified the key steps and the important factors, as well as stakeholders, which are essential features for effective SWM. Within this updated conceptual framework, we qualitatively evaluated global SWM strategies and practices, identifying opportunities, barriers, and best practices. We find that, although a few exceptional countries exhibit zero-waste compliance, most fare poorly, as exhibited by the high waste generation, incineration, and disposal (open dumping, landfilling) volumes. In the Global North, SWM strategies and practices rely heavily on technologies, economic tools, regulatory frameworks, education, and social engagement to raise stakeholder awareness and enhance inclusion and participation; in the Global South, however, many governments take sole legal responsibility for SWM, seeking to eliminate waste as a public "nuisance." Separation and recycling in the Global South are implemented mainly by "informal" economies in which subsistence needs drive recyclable material retrieval. Imported, regionally inappropriate tools, economic constraints, weak policies and governance, waste trading, noninclusive stakeholder participation, data limitations, and limited public awareness continue to pose major waste and environmental management challenges across nations. In the context of the framework, we conclude that best practices from around the world can be used to guide decision-making, globally. Despite variations in drivers and needs across regions, nations in both the Global North and South need to improve WH and CE compliance, and enhance stakeholder partnership, awareness, and participation throughout the SWM process. Partnerships between the Global North and South could better manage traded wastes, reduce adverse impacts, and enhance global environmental sustainability and equity, supporting UN Sustainable Development Goals. Integr Environ Assess Manag 2024;20:9-35. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

A framework for achieving a circular economy using the blockchain technology in a sustainable waste management system

In a circular economy, the use of blockchain applied to different models like the waste management process leads to sustainable solutions alternative to the non-efficient linear economy. This study proposes a new methodology capable of optimizing the waste management process through an enabling technology: the blockchain. An innovative method that can increase monitoring while reducing the general costs of waste management is proposed. A blockchain system is developed for the control of urban waste. In addition, a reward mechanism is established for the citizens in terms of the levels of sorted waste produced and the working procedures of the agency that manages waste collection are optimized. A mathematical model that formalizes the problem for an optimal solution to minimize the costs of all the stakeholders involved in the Waste Management process is also developed. The characteristics that the proposed system allows are very important for the entire process of solid waste management. In fact, the adoption of the blockchain enables full traceability of the waste, ascertainability of each action, and the possibility that every customer can directly verify the information that is stored in the blockchain, such as the quantity of disposed waste, the amount of his reward and several additional data. Last but not least, the integrity of all stored records is fundamental in order to enforce the trust between the citizen and the Municipality that is in charge of dealing with solid waste management.

Fate of Per- and Polyfluoroalkyl Substances in Postconsumer Products during Waste Management

Per- and polyfluoroalkyl substances (PFAS) have been widely used in consumer products, and some inevitably end up as municipal solid waste. Significant knowledge gaps associated with the fate and release of PFAS from postconsumer products in solid waste management processes exist that limit our current ability to develop appropriate end-of-life management strategies for PFAS. The objectives of this paper are to summarize the current knowledge associated with the fate and release of PFAS from postconsumer products from commonly used waste management processes (including landfilling, recycling, composting, and incineration) and to use that information to identify knowledge gaps and potential exposure pathways for humans and the environment. The current results indicate that landfills are major sinks of PFAS because most PFAS-containing consumer products are landfilled, and PFAS was extensively reported in landfill leachate. More information is needed regarding the total influx of PFAS into landfills as well as landfill gas emissions. Recycling and composting also present potential exposure pathways. The reprocessing of carpet and paper packaging was reported to cause direct exposure to onsite workers through PFAS volatilization and dust emissions. Recycling can cause the circularity of PFAS in the new product and subsequent release throughout its lifespan. Composted food packaging was found to contain PFAS and could cause contamination during the land application of compost. The incineration of waste provides near-complete destruction (∼99%) of PFAS. However, some low-temperature regions within the furnace may still result in products of incomplete combustion, such as short-chain perfluoroalkyl acids and other stable fluorinated compounds, which may be released in incinerator ash. More information is needed regarding the mechanisms of PFAS thermal destruction. Case studies of PFAS product categories indicated that carpet and cosmetics might contribute to the release of more soluble and volatile PFAS, such as perfluoroalkyl acids and fluorotelomer alcohols during landfilling in leachate and gas. The fate of specific PFAS during waste management aligns well with their physical/chemical properties, such as solubility and volatility.

Comparative Analysis of the Implementation of Support Vector Machines and Long Short-Term Memory Artificial Neural Networks in Municipal Solid Waste Management Models in Megacities

The development of methodologies to support decision-making in municipal solid waste (MSW) management processes is of great interest for municipal administrations. Artificial intelligence (AI) techniques provide multiple tools for designing algorithms to objectively analyze data while creating highly precise models. Support vector machines and neuronal networks are formed by AI applications offering optimization solutions at different managing stages. In this paper, an implementation and comparison of the results obtained by two AI methods on a solid waste management problem is shown. Support vector machine (SVM) and long short-term memory (LSTM) network techniques have been used. The implementation of LSTM took into account different configurations, temporal filtering and annual calculations of solid waste collection periods. Results show that the SVM method properly fits selected data and yields consistent regression curves, even with very limited training data, leading to more accurate results than those obtained by the LSTM method.

Process for Sustainable Solid Waste Management in Tuti Island, Sudan, during Nile Flood Season; Comparison with International Standards Khogali Hind1

Tuti Island is at the confluence of the White and Blue Niles and lies at the center of Greater Khartoum. The solid waste volume from houses is estimated at 20 tons, which has a significant impact on human health, the environment, and climate change.
 
 This study aims to investigate the process of solid waste management on Tuti Island. Solid waste includes food remains, construction debris, wood, scrap iron, discarded furniture, and collecting and reusing flood and rainwater International standards state that the solid waste disposal process passes through specific stages.
 
 This study adopts a scientific methodology to analyze the current scenario of measuring the types and quantities of solid waste and find appropriate methods for its collection, transportation, classification, treatment, recycling, reduction, and reuse. The study additionally uses questionnaires for the identification of issues, the types of solid waste, and proposed solutions.
 
 The results demonstrated that 37% of the respondents agreed that solid waste management is addressed it means there’s a process, 45% agreed that they should pay for this service, and 75% agreed that one solution for waste management could be to increase people's awareness. It was proposed to continue this project by supporting people, demanding legislation from the government represented by the Ministry of Environment and policies that support the recycling process.

Study on Solid Waste Management System in Rangpur City Corporation (RpCC) and Suggestion for improving the System Using LEAN Tools

A healthy urban environment depends heavily on effective waste management. Recently, a large number of city/urban areas have sprung up in Bangladesh, where daily production of solid waste is rather high. Rangpur City Corporation (RpCC) is a recently built city with 33 wards in the northern region of Bangladesh. Only 15 of them out of the total practice solid waste management. The essential area of RpCC is covered by these 15 wards. This study aims to detail the solid waste management procedure as well as the current state of various garbage dumping locations inside the research region. In order to evaluate and keep track of the trash dumping places, the primary data was directly gathered via field survey in order to assess and monitor the waste dumping points. Besides, additional data/information were collected from books, journal, and websites. This study suggests the lean tool kanban and visual management to keep the solid waste management process standard and keep on the road of continuous improvement. Kanban is very helpful to avoid breakdown of solid waste management process. On the other hand, visual management also can take a part to make the solid waste management easier and more helpful to avoid any fault in this process by its implementation.

Integration of Formal and Informal Sector in Waste Management System in Sri Lankan Cities, Special Reference to Homagama

‘Solid waste management has been identified as a massive problem in especially developing countries, and there is no specific solution found for that. It is also a topic that gradually comes with a growing population, rapid urbanization, and fast development. There are two parties involved in waste management activities in the developing world, the formal sector and the informal sector. Both sectors play a specific role in the solid waste management process, but there is no official contact between these two sectors, which has an impact on the weekly waste management process. The purpose of this study is to investigate the formal and informal sectors' contributions to the waste management system, the importance of informal sector involvement in solid waste management, and to identify opportunities for integrating both sectors into the waste management process. Here, mass balance analysis is used to identify the waste flow within the boundary, and an integrated visualisation tool is used to identify possibilities for integrating formal and informal sectors in this Municipal solid waste management process. The result suggests the potential for integrating these two sectors in the municipal solid waste management system. It will provide mutual benefits for both sectors, public, health, and environment. Based on the findings, integration of both sectors will be a better solution for the solid waste management system in Sri Lankan cities.

Public Perception on Involvement in Solid Waste Management Process and Practices: A Case Study of Johor Bharu, Malaysia

Effective and efficient service delivery of urban service is paramount, especially in the ever-growing urban population. A high number of populations residing in urban areas has increased waste generation. Around the world, municipalities, especially in developing countries have to increase their waste management budget and various initiatives to deal with the generated waste. One of the preferable initiatives for developing countries in dealing with waste management issues is through the involvement of the public in the process and practices. Therefore, the purpose of this paper is to evaluate the perception of the public involvement in the process and practices of solid waste management in Johor Bharu, Johor, Malaysia. A total of 260 respondents in a mixed density residential housing scheme participated in the questionnaires survey. Therefore, several recommendations are put forward to enhance the cooperation of the public and municipalities in the solid waste management process and practices.