Waste In Urban Areas Research Articles

SiSMA‐SWMS: Signature‐based Secure Monitoring Approach for Smart Waste Monitoring Systems

AbstractWith the speedy growth of the populace, corresponding waste also grows, notably raising greater concern about the monitoring of waste in urban areas. Although the traditional method of waste monitoring has benefited city waste management systems, it remains time‐consuming, inefficient, and detrimental to public health. This situation can be improved by integrating advanced technologies, which can significantly enhance the flexibility and performance of waste monitoring systems. However, these advanced technologies encounter numerous security challenges. In this article, we have implemented a signature‐based monitoring approach to oversee the status of smart bins. To ensure the security, robustness, and reliability of the introduced protocol, we utilized tools such as AVISPA, Scyther, the ROR model, and Mao and Boyd logic. As discussed in the informal security analysis, the introduced protocol successfully fulfills the security requirements for smart waste monitoring systems. Finally, an in‐depth comparative analysis of the related works and the introduced protocol shows that the latter provides greater security, reliability, and efficiency. As a result, the reliability and hardness of the cryptographic operations used in the introduced protocol make it secure enough to use in real‐world applications.

HYGIENE HIVE MONITOR

In modern days, we desire a healthy and hygiene-friendly environment for our society. We see multiple dustbins with an overflow of waste in urban areas. This situation is created pathogens, which spread diseases in our society. Its affect clean India mission. So, we designed the system aimed at improve the effectiveness and sustainability of waste collection and disposal processes. In this setup, once the dustbin reaches its maximum capacity, a notification containing its live location is dispatched to the corporation. The detection of the dustbin's capacity is facilitated by employing an ultrasonic sensor. Then level of garbage is displayed by LCD and the level is sent to the corporation. This helps the timely collection of garbage. As the rain is fell into the trash can; the stink was affecting our society. The rain drop sensor detects the rain drops; trashcan will be automatically close. This helps to reduce the stench and improves healthy environment. If suppose, after sending the live location notification, the dustbin does not cleaned by workers then the notification sent to the higher authority. Then if the dustbin is empty or less than capacity of 80, message is sent to the corporation (Cleaned). It is helping the higher official, whether the workers are working properly or not. We used an efficient and cheap component to make this project economical. It can be easily understood by the workers. It reduces the overflow of garbage. A system is used to improve our nation. Concluding that the system helping us to save the time, energy, cost, and fuel. Improve the concept of less human and speedup process. Key Words: Ultrasonic sensor, raindrop sensor, IR sensor, IoT, Dustbin

Evaluating the efficacy of social capital in facilitating sustainable municipal waste management: Reflections from Harare, Zimbabwe

The volumes of waste in urban areas around the globe continue to increase due to the upsurge in disposals from exponentially growing urban populations. Ideally, the waste must be regularly collected by responsible councils, but in some countries, the collection has been erratic due to operational challenges. Unfortunately, this is the current and perpetually unresolved problem in Zimbabwe. A lack of garbage collection vehicles, as well as a lack of fuel for the available refuse collection trucks, has resulted in sporadic refuse collection in urban areas. The accumulation of uncollected waste in Zimbabwe's urban areas pollutes the environment and exposes the inhabitants to health risks, leaving waste management responsibilities to the community. This research, adopts the mixed-methods approach to evaluate the efficacy of using community social capital in waste management in urban Zimbabwe. Data was collected through a survey, observations and key informant interviews. The study revealed that due to poor refuse collection by the Harare City Council, residents have taken the initiative to use their social capital to manage waste in their communities through mechanisms like clean-up exercises, environmental cleanliness training workshops as well as forming collaborations with community-based organisations. However, these social capital initiatives are backtracked by some errant residents who continue to dump waste in undesignated areas. Measures such as the introduction of waste recycling income generation projects, giving incentives to community clean-up participants and enforcement of penalties for dumping waste in illegal places are recommended to support social capital initiatives in municipal waste management in Harare.

Household food waste in Surakarta City, Indonesia: Quantity, global warming potential (GWP), and management

Households represent one of the main contributors to food waste in urban areas. Surakarta is one of the cities in Indonesia where a significant portion of household food waste is disposed of in landfill sites. The piles of food waste can become an environmental issue if left unmanaged, as they generate greenhouse gas emissions that contribute to global warming. The aim of this research is to determine the quantity, emission estimations, and management of household food waste in Surakarta City. A total of 151 household samples had their food waste collected over a period of 7 days. The method for measuring the quantity of food waste involved direct measurements using a scale, calculating food waste emissions using the GWP formula, and collecting management data through a questionnaire. The research results indicate that, on average, households dispose of 0.499 kg/week of food waste and estimate food waste emissions to be 0.789 kg CO2e/week. In addition to being discarded, some food waste is managed as animal feed and fertilizer. Implementing proper and sustainable management can lead to a reduction in the quantity of food waste sent to landfills.

Collaborative Governance in Waste Management: A Study from Surabaya Smart City Programme

Urban areas face severe environmental problems, where rapid population growth causes the amount of waste in urban areas to increase. As one of the metropolitan cities, Surabaya also experiences problems related to waste management, where the amount of waste generated by Surabaya residents daily is 1,600 tons. This research uses the literature study method by using some of the existing literature as a data source in this paper. The research results in this paper show that waste management in the city of Surabaya also involves the private sector from several companies and the community’s active role in managing waste around their living areas through waste banks. The collaboration was carried out by the Surabaya City Government, PT. Sumber Organik, and the community can work well in dealing with piles of garbage in Surabaya. The existence of a waste bank can help increase public awareness of reducing and recycling waste.

ВПЛИВ СМІТТЄВИХ ПОЛІГОНІВ НА МІСТОБУДУВАННЯ ТА АРХІТЕКТУРУ ВЕЛИКИХ МІСТ

Today, urban development is rapidly gaining momentum due to economic growth and changing lifestyles, which leads to urban expansion and population growth. This leads to an increase in the amount of solid waste in urban areas. The problem of solid waste management is now one of the most pressing issues on a global scale. Garbage does not leave us at home, at work, on the streets of the city, even during a quiet walk in the park - it accompanies us everywhere. In fact, garbage has become an integral part of our everyday life, and humanity has even learned to coexist with it. However, the problem is far from as simple as it seems at first glance. The root of the problem lies not in the garbage itself, but in the way people treat it. Consider, for example, such disturbing phenomena as "landfills" or "landfills", which are currently the subject of general concern. First, landfills have a negative impact on the environment. They cause soil contamination around the landfill and groundwater pollution, which in turn leads to serious problems with the availability of clean water. In addition, landfills cause air pollution and the spread of unpleasant odors over long distances. Despite the widespread belief that all waste-related problems can be solved through recycling, landfills remain the most common method of waste disposal worldwide. There is also a perception that landfills are a cost-effective way to treat waste. Although this is undoubtedly the most affordable and easiest way to solve the problem. But it is worth remembering that the cost of these savings exceeds the environmental problems that will soon arise. Modern waste and landfill management has a major impact on the architecture and urban planning of large cities. This article explores the urgent problem of improper waste management in the context of urban development. Based on the latest data and research, a thorough analysis of the impact of landfills on the environment, infrastructure, and quality of life of residents of large cities is carried out.

Advances in understanding kinetic mechanisms underlying waste ground tyre rubber pyrolysis

The depletion of natural resources and the need to reduce solid waste in urban areas have necessitated the incorporation of used materials such as waste ground tyre rubbers (WGTR), into manufacturing processes. As a result, techniques and recycling methods have been established to use tyres as feedstock for marketable products since tyres have a calorific value higher than coal and contain a significant amount of carbon black. Among several techniques, pyrolysis has emerged as the most appealing for treating WGTRs. This technique allows the recovery of valuable products like combustible gases, fuels and chemicals, and activated carbon. Studies have focused on understanding the mechanism underlying the WGTR pyrolysis through the establishment of mathematical models and reaction patterns to valorise WGTRs and efficiently produce marketable chemicals. This paper presents an overview of recent developments in understanding WGTR pyrolysis mechanisms. A general mechanism observed involves a first depolymerisation/condensation of the rubbers, then a degradation of the condensed products, and finally a devolatilisation of additives. Based on the limited information available on the chemicals' formation mechanism, it is assumed that limonene and isoprene are derived from natural rubber (NR), through a series of β-scission and depropagation reactions of polyisoprene and intramolecular cyclisation and scission of monomeric isoprene, respectively, with an equilibrium step of Diels-Alder reaction. The maximum yield of limonene and isoprene have been found to be 51% and 20.5% at temperature around 500°C respectively. The isoprene yield can be increased up to 37.57 % with the use of catalyst such as Calcium Oxide.

Economic-Financial Analysis of Municipal Solid Waste Recycling In Brazil: a Case Study of a Recycling Cooperative

Economic development and the growth of industrialization have contributed to an increase in the generation of solid waste in urban areas. Municipal solid waste recycling cooperatives (MSWRCs) provide environmental benefits as well as better working and living conditions for waste pickers. This article analyzes the economic viability of a MSWRC in Brazil using economic-financial indicators, with data from September 2021. Economic viability was analyzed considering the net present value (NPV), annualized net present value (ANPV), internal rate of return (IRR), benefit-cost ratio (BCR) and discounted payback with a minimum attractiveness return rate (MARR) of 3% per year. Financial risk was evaluated using the Monte Carlo method, considering three scenarios for income and the remuneration of cooperative members. The base scenario (operating conditions prioritizing the remuneration of the members of the cooperative) places the future sustainability of the business at risk. Variations in the revenue from the sale of recyclable materials and in the remuneration of cooperative members exert a considerable influence on economic and financial indicators, representing a high risk of losses (between 23% and 26.6%). In conclusion, the future sustainability of MSWRCs depends on strategies for increasing revenue whether through the enterprises themselves or through public policies. The need for the better remuneration of cooperative members constitutes a challenge for management due to the need to make investments in the maintenance and growth of the production unit.

Vermitechnology: A Sustainable Approach to Manage Organic Waste in Urban Areas

Vermicomposting is the natural process of compost formation by converting organic wastes into organic fertiliser utilising earth worms and cow dung. It is being widely used for solid waste management. Many species of earthworms are utilised in this process such as Eisenia fetida, Eudrilus eugeniae, Eisenia andrei, Lampito rubellus and Drawida willis. They feed on the organic waste to produce vermicompost, vermiwash and more earthworms as resultant products. Composting process with this technique takes around 28-120 days and it depends upon the type of worms and organic waste used. Kirori Mal College of the University of Delhi is pioneer in adopting the vermicomposting on a large scale. It has put 15 beds in place in its nursery. This set of fifteen composting beds is able to utilise about 1.7 tons of dry leaves in a single cycle and converts them into very nutritious fertilizer. As we could run four such cycles in a year, the Kirori Mal College has the potential of consuming about seven tons of dry leaves annually and put it to a better use, which otherwise, would have been a responsibility of the Municipal Corporation of Delhi. Along with the vermicompost, the process also produces vermiwash, a concentrated liquid fertilizer, which is stored and is being utilized after dilution. The vermicomposting also leads to rapid multiplication of earthworms, which can be sold in the market and the spare ones can be utilised for the next cycle. Vermicomposting for the disposal of the dry organic waste is very cost effective and energy efficient.

Formation and characterization of leaf waste into organic compost.

In solid waste management, pollution-free disposal of leaf waste in urban areas is still not standardized and adopted. According to the World Bank report, 57% of wastes generated in South East Asia are consisted of food and green waste, which can be recycled into valuable bio-compost. The present study shows a method of leaf litter waste management by composting it using essential microbe (EM) method. Different parameters, such as pH, electrical conductivity, macronutrients, micronutrients, and potentially toxic elements (PTE) were measured at zero to 50 days of composting using appropriate methods. The microbial composting was shown to mature within 20 to 40 days, and its maturity could be evaluated by the attainment of stable pH (8), electrical conductivity (0.9 mS/cm), and C:N ratio ≥ 20. The analysis was also performed on other bio-composts viz. kitchen waste compost, vermicompost, cow dung manure, municipal organic waste compost, and neem cake compost. The fertility index (FI) was evaluated based on six parameters viz. total carbon, total nitrogen, N ratio, phosphorus, potassium, and sulphur contents. The PTE values were used to calculate their clean index (CI). The results showed that leaf waste compost has a higher fertility index (FI = 4.06) than other bio-composts, except the neem cake compost (FI = 4.44). The clean index of the leaf waste compost (CI = 4.38) was also higher than other bio-composts. This indicates that leaf waste compost is a valuable bio-resource with high nutritive value and low PTE contamination, with a favourable prospective to be used in organic farming.

High-resolution mapping and evolution of steel stocks and waste in civil buildings: a case study of Changsha, China.

Systematic estimation of steel stocks and waste in urban areas and analysis of its historical evolution pattern is crucial for urban buildings steel recycling and environmental sustainability. However, it is a challenging task to collect big data from different sources and estimate accurately with high resolution. In this study, we proposed a novel hybrid approach (GMB model) to estimate building steel stocks and the annual waste rate through combining Geographic Information System, Material Flow Analysis, and Big Data Mining techniques. We estimated the civil-building steel stocks and amount of waste in Changsha urban area from 1985 to 2020 based on the GMB model, and analyzed the historical evolution pattern of steel stocks by using standard deviation ellipse and kernel density. The results showed that the cumulative steel stock in civil buildings grew from 0.66 million tons in 1985 to 8.26 million tons in 2020. The amount of waste increased by 2557 times. The spatiotemporal analysis showed that variations in distribution of the steel stocks are mainly concentrated in the central city, indicating a "central-peripheral" distribution, with a southward trend in the standard deviation ellipse and a southeast-northwest direction in the center of gravity of the steel stocks. There is low-high and high-low spatial aggregation patterns. We also compared the experimental results with the observed data to determine the feasibility of the GMB model. Our study can promote the management of steel resources recycling and aid to achieve the green and low-carbon goals in sustainable development policies.

Mobile App as Digitalisation of Waste Sorting Management

The problem of waste in urban areas that are not managed properly has created a threat to the environment and human life. And this problem is the co-responsibility of the community to get involved in waste management and waste recycling. It is necessary to sort the waste starting at home with recycling because the amount of waste going to the landfill can be reduced. Another benefit of sorting waste is reducing the risk of contaminating the environment. The 3R concept, that is, reuse, reduce, and recycle, has become a government regulation to improve the environmental and waste problems in Indonesia. The focus of this research is on households, beginning with the selection of household waste. Waste sorting is divided into 4 categories, namely organic waste, non-organic waste, B3 or e-waste, and sanitary waste. Using mobile app technology as a solution to encourage individual households, especially housewives, to participate in household waste sorting, the ‘Pilahin’ prototype app was introduced. The selection of media apps on smartphones is because the app has been widely used by urban communities. The app is packed with features that help users scan and detect trash and provide trash categories to identify and sort, as well as the option to find nearby trash banks. The app ‘Pilahin’ has over 40 design screens that have been turned into interactive prototypes and tested on 4 target users with satisfactory results. This application has the potential for development by working with organizations that are already working on waste classification.

Consumer Behaviour Regarding Food Waste in Romania, Rural versus Urban

Reducing food waste is an important objective in order to raise awareness of the negative effects it produces. The lack of information regarding the efficient use of food will affect the environment and the health of each of us. The objective of the paper is to present the behaviour of Romanian consumers regarding food waste. By means of a semi-structured questionnaire administered to 267 consumers, the following aspects were investigated: the place where they serve meals, the preparation of meals at home, purchase preferences, the motivation for food waste, and selective collection. Consumption typologies identify a higher share of food waste in urban areas and a better use of food in rural areas. The people from rural areas ate more than 50% of their meals at home. The preferred location for procuring food was, by far, the supermarket or hypermarket in both urban and rural environments. Young people throw away more waste than older food consumers. Awareness about food waste is more accentuated in young adults, without a significant correlation to the area of origin.

Assessing the economic cost of urban pollution: A case study of landfill waste in Kulonprogo, Indonesia

Introduction – Rapid urbanization in developing countries dramatically increases solid waste production, negatively impacting the socio-economy and ecology. Solid waste management is essential to minimize the associated risks, especially in health and the environment. Objective – This study assesses the economic cost of pollution from the disposal of household waste at the Banyuroto landfill, Kulonprogo, Indonesia. Methodology/Approach – This study uses the sickness and reimbursement cost approach. The subjects in this study were 100 households in Banyuroto, Kulonprogo, Indonesia, selected using cluster random sampling. Findings – The results show that the landfill has a negative impact on the community’s life because it causes air pollution (unpleasant odors), water pollution, and waste-related diseases, such as diarrhea, respiratory problems, flu, cough, cold, and itchy rash. The economic cost of pollution emerging from the landfill is IDR 2,355,000 per year. Meanwhile, using the replacement cost method, the estimated cost of environmental quality degradation is IDR 12,144,000 per year. For 1,230 households, the cost is IDR 125,941,304 per year, so the average economic cost due to environmental degradation is IDR 912,104,414 per year. Originality/Value/Implications – This study contributes to the literature by highlighting the environmental and health risks from the pollution caused by landfill waste in urban areas.

Application of system dynamics for the sustainable management of solid waste in urban areas of Pakistan

Application of system dynamics for the sustainable management of solid waste in urban areas of Pakistan

EFFECTIVITY OF POLLUTANT DECAY IN THE CONSTRUCTED WETLANDS BY USING WATER BAMBOO PLANTS (EQUISETUM HYEMALE)

One of the problems in urban areas is the pollution of water sources. Unmanaged domestic waste in urban areas causes the waste to enter the main river system, causing river water pollution. One of the efforts that can be made to reduce the burden of water pollution is to use phytoremediation through constructed wetlands. This study aimed to analyze the effectiveness of water bamboo or Equisetum hyemale in pollutant removal. The rate of pollutant decay in constructed wetlands using water bamboo plants or Equisetum hyemale, modeled using 4th order Runge-Kutta. The study was conducted by taking water samples from constructed wetlands planted with Water Bamboo plants for a certain period. The parameters measured were DO, nitrate, phosphate, and ammonia. The concentrations of these parameters were analyzed using linear regression to determine the gradient of each equation (k). The gradient is a representation of the plant's ability to shed pollutants. The value of k is then used to calculate the change in concentration with time with the help of the Runge-Kutta numerical model of 4th order. Based on the regression results, the decay rate values for each parameter are 0.026/day for DO, 0.024/day for ammonia, 0.006 /day for phosphate, and 0.1214 /day for nitrate. This data is then entered into a numerical model which is solved by 4th order Runge-Kutta to obtain the change in concentration per unit time. When compared theoretically, pollutants in water bodies experience a decay pattern according to the theory. Based on the calculation of pollutant decay results in the field, it was found that the effectiveness of the constructed wetland in eliminating DO was 41.68%, ammonia was 60.49%, phosphate was 30.62%, and nitrate was 53.51%.

RANCANG BANGUN APLIKASI ECODUACTION SEBAGAI STRATEGI PENGEMBANGAN KAMPUNG TEMATIK ECO ENZYME BERBASIS SOCIOTECHNOPRENEUR

Padang has 11 thematic villages, one of which is the Eco Enzyme Thematic Village, which is held at the Andalas Sepakat Unit Waste Bank office in Andalas Village. The idea of ​​the Eco Enzyme Thematic Village emerged seeing the problem of waste in urban areas, especially the city of Padang which has been piling up in Final Disposal Sites (TPA). In fact, if processed further, there is waste that can produce useful products such as processing with eco-enzymes. However, not many people are able and willing to manage their daily consumption waste into eco-enzyme products. The purpose of this research is to produce an application that can facilitate the community in managing waste into eco-enzyme products to selling finished products and selling the waste itself. This application will consist of 3 superior features, namely educational features, features for selling eco-enzyme and waste products (basic ingredients for eco-enzymes), as well as interaction features between users so that later they can become an active community to encourage education to the wider community. This application is called the "Ecoduaction Application" which is made based on sociotechnopreneur. This research applies the SDLC (System Development Life Cycle) method. The result of this research is an application that bridges the community in taking real action to solve the waste problem as well as being one of the solutions to economic problems in the city of Padang through eco-enzyme processing.

Application of Material Flow Analysis to Municipal Solid Waste in Urban Areas in Developing Countries and Possible Solutions Under Circular Economic Framework

"The understanding waste flow of a country is important to identify the main problems associated with waste management and identify opportunities in material flow management. A tool such as material flow analysis (MFA) is a widely used method in waste management studies, to provide a comprehensive analysis of material movements, support for material characterization analysis to identify the severity of a problem, identify the real root cause, and propose suitable management methods. This paper presents an application of MFA for municipal solid waste (MSW) management in Western provinces in Sri Lanka. The outcome includes the identification, and quantification of the main input and output flows of the system in the present context, from waste generation, collection, unaccounted and unidentified flows, material recovery, and final disposal of MSW. Results are evaluated under treatment mechanisms of Recycling, Reusing, and repurposing the materials. Overall results show per capita per day of waste generation in Sri Lanka stood at 0.43 kg, whereas, the Western province represents that 0.56 kg due to the high population area with the highest rate of urbanization. However, the global average per capita per day of waste generation stood at 2.22 kg. The material and energy recovery represent 31% and 33% respectively in the study area from total collected waste. 36% of the material finally ended up in open dumpsites even after collection. Further research needs to be done on material and energy recovery potential identification in dumping waste, as this can convert to valuable results with proper management practices with available resources."

Identification of urban sectors prone to solid waste accumulation: A machine learning approach based on social indicators

In the last decades, the accumulation of municipal solid waste in urban areas has become a latent concern in our society due to its implications for the exposed population and the possible health and environmental issues it may cause. In this sense, this research study contributes to the timely identification of these sectors according to the anthropogenic characteristics of their residents as dictated by 10 social indicators (i.e., age, education, income, among others) sorted into three assessment categories (sociodemographic, sociocultural, and socioeconomic). Then, the data collected was processed and analyzed using two machine learning algorithms (random forest (RF) and logistic regression (LR)). The primary information that fed the machine learning model was collected through field visits and local/national reports. For this research, the Puente Piedra and Chaclacayo districts, both located in the province of Lima, Peru, were selected as case studies. Results suggest that the most relevant social indicators that help identifying these sectors are monthly income, consumption patterns, age, and household population density. The experiments showed that the RF algorithm has the best performance, since it efficiently identified 63% of the possible solid waste accumulation zones. In addition, both models were capable of determining different classes (AUC – RF = 0.65, AUC – LR = 0.71). Finally, the proposed approach is applicable and reproducible in different sectors of the national Peruvian territory.

Quality and Fertility Assessments of Municipal Solid Waste Compost Produced from Cleaner Development Mechanism Compost Projects: A Case Study from Uganda

Despite the fact that compost projects under the Cleaner Development Mechanism (CDM) have been implemented in Sub-Saharan Africa in recent years, there is a paucity of information on the quality of compost produced from the compost plants. This study fills this gap by evaluating the properties of MSWC produced from 12 CDM plants in Uganda based on quality and fertilizing indices. pH, Pb N, K, P, Mn, Cd, Ca, Mg, Cu, Fe, Cr, Zn, OC, and CN levels differed significantly between locations. MSWC’s Fertility Indices (FI) ranged from 1.9 to 2.9, with Mbarara having the highest (2.9) and Soroti having the lowest (1.9). Fort Portal, Mbarara, Kasese, and Masindi have Clean Indices (CI) ranging from 3.8 to 4.9. According to the results of the fertility and Clean Indices analysis, all MSW composts generated at CDM facilities have low fertilizing capacity and poor quality and are classified as Class RU-1, which does not meet international and national compost criteria. As a result, these composts cannot be utilized as fertilizers and can only be used as soil conditioners under certain conditions. Windrow composting has been proven to be a viable method for lowering huge amounts of organic municipal solid waste in urban areas, and it can be scaled up to other parts of the world according to this study. Authorities must, however, engage urban citizens in waste separation at the source and MSWC enrichment with organic sources. This will aid in improving its quality and fertilizing capacity, as well as in ensuring that the MSWC produced is uniform and suited for use in agriculture and the market.