Terms Of Waste Management Research Articles

Composting and Mechanical Biological Treatment for Reducing Greenhouse Gas Emissions in Bizerte, Tunisia

This study seeks to develop effective solutions and strategies for waste management in the Tunisian municipality of Bizerte by addressing the urgent need for sustainable waste management practices in light of the global imperative to mitigate climate change. With a specific focus on reducing greenhouse gas emissions, this investigation aligns with Tunisia’s commitment to international agreements, including the Paris Agreement and the Global Methane Pledge. This study begins with an exploration of background information, followed by data collection and waste characterization to determine the current situation and to detect gaps that exist in terms of waste management in Bizerte municipality. Two scenarios are proposed as potential solutions for the municipality. The first examines a green waste composting facility with a 1000-ton yearly capacity, which has been operational since 2020. This study describes the compost production process and evaluates the quality of compost derived from green waste. This approach demonstrates its potential for delivering significant environmental and economic benefits. The second scenario delves into the implementation of a mechanical biological treatment (MBT) plant for sustainable handling of residual waste while contributing to a reduction in the municipality’s overall environmental footprint. Using the Sweet software, version 4.0.2, July 2022. this study quantifies the potential reduction in greenhouse gas emissions resulting from composting to be 3%, while the MBT achieves a reduction of 28%.

Multi-objective non-linear programming problem with rough interval parameters: an application in municipal solid waste management

In dealing with the real-world optimization problems, a decision-maker has to frequently face the ambiguity and hesitancy due to various uncontrollable circumstances. Rough set theory has emerged as an indispensable tool for representing this ambiguity because of its characteristic of incorporating agreement and understanding of all the involved specialists and producing more realistic conclusions. This paper studies an application of the rough set theory for a multi-objective non-linear programming problem that originates for the management of solid wastes. Municipal solid waste management is a global problem that affects every country. Because of the poor waste management system in many nations, the bulk of municipal solid waste is disposed of in open landfills with no recovery mechanism. Hence, an effective and long term waste management strategy is the demand of the day. This research offers an incinerating, composting, recycling, and disposing system for the long-term management of the municipal solid waste. A model for the municipal solid waste management with the goal of minimizing the cost of waste transportation, cost of waste treatment and maximizing the revenue generated from various treatment facilities is developed under rough interval environment. To tackle the conflicting nature of different objectives, an approach is proposed that gives the optimistic and pessimistic views of the decision-maker for optimizing the proposed model. Also, the biasness/preference of the decision-maker for a specific objective is handled by establishing the respective non-linear membership and non-membership functions instead of the linear ones. Finally, to demonstrates the practicality of the proposed methodology, a case study is solved and the obtained Pareto-optimal solution has been compared to those obtained by the existing approaches.

Study the Relevance of the Development of a Garbage Power Plant to the Large Increase in Waste Volume in Indonesia

Garbage endangers the community in terms of health, the economy, and the land that is taken up. Indonesia is a country with many waste piles, but there is waste management in terms of recycling, the use of computers, and other things, even from energy sources for power plants. The Waste Power Plant (PLTSa) is an electric power plant that helps add electrical energy for the PLN to be distributed to the community. The source of combustion and the driving point for garbage power plan (PLTSa) is waste; therefore, most of these locations are located in landfills in big cities. This research article aims to strengthen the argument that the development of PLTSa can be accelerated because the increase in waste piles every year will cause unmanaged waste to also increase. The results of studies and literacy studies show that the average managed waste pile is 15,000 tons/year and still leaves 5 million tons/year of waste that is not appropriately managed; however, the PLTSa capacity is still small at 10 MWh/year. It is necessary to increase the quality of waste containers as a source of PLTSa energy to reduce the amount of unmanaged waste.

Communes’ Expenditure on Municipal Waste Management in Terms of Sustainable Development

Theoretical background: As we work towards achieving sustainable development under Goal 12, which entails promoting sustainable consumption and production patterns, one of our key tasks is to minimize waste generation through prevention, reduction, recycling, and reusing. Local government units (LGUs) have a significant role to play in implementing this task. By investing in municipal waste management, LGUs can influence the behavior of residents toward responsible waste collection and management, including hazardous waste. Purpose of the article: This article aims to evaluate how local government spending affects municipal waste management in different voivodeships. The hypothesis of this paper is that local government expenditure improve waste management effects. To achieve effective spending that supports sustainable development, public authorities at the regional level must coordinate their activities and adapt to EU standards. Research methods: This article used literature and statistical analysis to adopt dynamics indicators and correlation coefficients. Data on selected variables for the study came from the Local Data Bank of the Central Statistical Office and Eurostat. Main findings: According to the analyses conducted, there has been a positive development in municipal waste management in Polish communes. This suggests that the government’s policies are contributing towards achieving the sustainable development goal of responsible and sustainable waste management, especially when it comes to hazardous waste. These findings could be utilized to recommend to public authorities the necessary changes to fiscal instruments that would promote sustainable public finances.

Comparative study of high-performance mesophilic and thermophilic anaerobic membrane bioreactors in the co-digestion of sewage sludge and food waste: Methanogenic performance and energy recovery potential

To support smart cities in terms of waste management and bioenergy recovery, the co-digestion of sewage sludge (SeS) and food waste (FW) was conducted by the anaerobic membrane bioreactor (AnMBR) under mesophilic and thermophilic conditions in this study. The biogas production rate of the thermophilic AnMBR (ThAnMBR) at the SeS to FW ratio of 0:100, 75:25, 50:50 and 100:0 was 2.84 ± 0.21, 2.51 ± 0.26, 1.54 ± 0.26 and 1.31 ± 0.08 L-biogas/L/d, inconspicuous compared with that of the mesophilic AnMBR (MeAnMBR) at 3.00 ± 0.25, 2.46 ± 0.30, 1.63 ± 0.23 and 1.30 ± 0.17 L-biogas/L/d, respectively. The higher hydrolysis ratio and the poorer rejection efficiencies of the membrane under thermophilic conditions, resulting that the permeate COD, carbohydrate and protein of the ThAnMBR was higher than that of the MeAnMBR. The lost COD that might be converted into biogas was discharged with the permeate in the ThAnMBR, which was partly responsible for the inconspicuous methanogenic performance. Furthermore, the results of energy recovery potential assessment showed that the energy return on investment (EROI) of the MeAnMBR was 4.54, 3.81, 2.69 and 2.22 at the four SeS ratios, which was higher than that of the ThAnMBR at 3.29, 2.97, 2.02 and 1.80, respectively, indicating the advantage of the MeAnMBR over the ThAnMBR in energy recovery potential. The outcomes of this study will help to choose a more favorable temperature to co-digest SeS and FW to support the construction of smart cities.

Synthesis and Evaluation of Geopolymer Mixtures Containing Chronologically Aged Basic Oxygen Furnace Slags

Applying industrial by-products as a substitution for conventional construction materials (natural resources) is a superior solution for the environment in terms of waste management and reduction in greenhouse emissions and for the construction industry in terms of cost and expenditure. Applying basic oxygen furnace slag (BOFS), one of the metallurgical industry by-products, as a construction material can be a high-potential and promising idea. However, the utilization of BOFS in construction applications is considerably limited because of its inherent characteristics leading to volumetric expansion behavior caused by the chemical reaction between free lime (f-CaO) and water. This study used geopolymer technology to stabilize the expansive behavior of chronologically aged BOFS aggregates. The compressive strength, expansion behavior, and drying shrinkage characteristics of a normal ordinary Portland cement (OPC) mixture and a geopolymer mixture containing siliceous river sand and chronologically aged BOFS aggregates were investigated. The test results showed that the compressive strength of geopolymer mixtures containing chronologically aged BOFS aggregate achieved 64.02 MPa, and the expansion behavior of geopolymer mixtures was improved compared with normal OPC mixtures containing the same BOFS aggregates, reaching 0.02% and 0.44%, respectively. However, due to the air-curing method, geopolymer mixtures had higher drying shrinkage values than normal OPC mixtures. Therefore, further studies should be conducted to investigate how to control the drying shrinkage of geopolymer mixtures containing chronologically aged BOFS aggregate.

Sosialisasi dan Pelatihan Pemanfaatan Sampah Anorganik Menjadi Media Tanam Vertikultur pada Masyarakat di Gili Air

Gili Air as one of the Small Islands in West Nusa Tenggara (NTB) has various geographical limitations and even has economic dependence on the tourism industry. The large number of tourists has an impact on the amount of waste generated every day. This is not balanced with optimal waste management in Gili Air, where waste from each household and tourism supporting facilities is just piled up, then taken by the transportation service (Gili Care) and disposed of in the TPA (Final Disposal Site) in Lombok Big Island. Waste management on Gili Air requires a large amount of money because you have to pay for transportation by boat. Some local people and owners of tourism-supporting facilities manage their waste by dumping it in pits or burning it. Some of them who know the economic value of inorganic waste sell directly cardboard, used bottles, iron and others to collectors or scavengers themselves. The waste bank in Gili Air has not run optimally, so the reduction in waste generation only comes from selling used goods individually. Based on these various problems, the service team carried out community service activities through outreach and training on the use of inorganic waste to become verticultural planting media which indirectly contributed to household-scale greening in Gili Air. The goal of this activity is to generate enthusiasm and participation from Karang Taruna Gili Air (KTGA) in terms of waste management. This service activity took place enthusiastically and actively involved KTGA, where the evaluation results showed that there was an increase in knowledge of 47%. The community's activeness in providing questions and responses is an asset for participatory community empowerment in Gili Air.

Waste LCA and the future

Life cycle assessment (LCA) models quantifying the environmental aspects of waste management have become an integral part of waste management decision-making over the last two decades and have provided ample knowledge on both environmental benefits and drawbacks in the way we handle waste. Waste management and LCA modelling of waste management systems will soon be challenged by profound changes necessary in our societies and sectors to meet sustainable development goals. Foreseen changes in energy, material, and nutrient provision will directly and indirectly affect waste management in terms of its operation and goals. This study reflects on anticipated changes in society and industrial sectors and how these changes may affect waste management and LCA modelling of waste management systems in terms of waste input, the modelling of technologies and systems and exchanges of energy, materials, and nutrients, as well as how it may affect impact assessment and the interpretation of results. The study provides practical recommendations for LCA modelling of future waste management systems, which will hopefully lead to robust assessments that can support decision-making in an evolving society subject to great changes.

Assistance in managing organic and non-organic waste in residential areas

Good management of organic and non-organic waste has an impact on comfort in residential areas and currently in the Cileungsi area, waste management has not been managed properly and has an adverse impact on the environment. As for housing, RT and RW environments, they are less active in terms of waste management. In the waste disposal process, each RT objected to the annual fee being increased. The fee charged for disposing of waste to the final shelter is around Rp. 12,500, - per head of family. It has been more or less 5 years since the levy fee has not been increased, due to the reason that the fee is used for other needs. Another problem also occurs in the Pesona Vista residential area, where garbage is collected by related parties, which takes 3-4 days each week. Under these conditions, discomfort arises in the environment, starting from the smell of garbage, because the rats eat the trash. The solution offered in this community service activity is organic and non-organic waste management to improve the economy of the community around the housing and create a healthy atmosphere in the housing environment. Organic waste will be managed to become liquid or solid compost. In the process of managing this organic waste using a counter, where there is a need for training on proper and correct operating and maintenance procedures. Meanwhile, plastic waste will be managed, to be sold to collectors

RT 027 Community Participation in Waste Management in Puspita Bengkuring Housing Environment, Samarinda City

Research on Community Participation of RT 027 Residents in Waste Management in the Puspita Bengkuring Housing Environment, Samarinda City, along with the level of community participation in managing waste The research method used is a qualitative descriptive approach, using interactive model data analysis from Miles, Huberman, and Saldana (2014). The results of the research show that residents of Rukun Tetangga 027 actively participate directly in thoughts, labor, goods and money. The level of community participation in terms of waste management is still not optimal, so it is necessary to increase participation, especially in terms of participation in separating waste based on its type, participating in waste management fees so that waste management can be properly organized, increasing community participation in community service implementation, and realizing the program as soon as possible, so that a high level of participation can be achieved.

Pneumatic waste collection system - A proposed innovation for Indian Institute of Technology, Roorkee Campus, India

Solid Waste Management (SWM) is a challenging issue to be addressed in most of the urban centres in India. Heavy population densities and exponential growth of the cities’ boundaries, due to migration, create kiosks to the cities’ resources such as land and other amenities. In such cities, the unsegregated waste gets generated in huge quantities while the rest are dumped in landfill sites without any specific treatment. Centralised and holistic approaches are missing, as most of the waste-to-energy & waste treatment plants are either getting closed or not working to its fullest efficiency. The strategies for a decentralised collection system, segregation and treatment of waste are not usually standard practices. In spite of the global impacts being pretty visible due to global warming, a massive amount of plastic gets dumped into ocean, which reaches the human beings via food chain and results in the most number of incurable diseases like cancer. Further, it also results in rapid extinction of the indigenous species. Campuses are known as mini-city or autonomous urban centres for knowledge sharing and the development of innovations. The time is here to make the Indian campuses smatter in collecting and treating the waste on their premises. Hence, the pneumatic collection process of the garbage can play an essential role in making the campus, an advanced and a sustainable one. Thus, there is an urgent need to develop a compact and a decentralised strategy to manage the waste in various urban centres. Also, a formalised informal sector of waste could be contributing to further recycling and processing of the garbage on the campus. The aim of the current research investigation is to identify various possibilities for making the campus, a smart one, in terms of waste management. Furthermore, the study also intends to find out how the compact, decentralised waste collection methods in urban can manage their solid waste in the limited available space. Making zero-waste campuses is a herculean task and a massive challenge must be dealt with immediately to help the cities achieve long-term sustainability.

Impact of Waste Management Education at Smu Witama Pekanbaru Students

This article discussed the impact of waste management education on students of SMU Witama Nasional Plus Pekanbaru. Schools are a great place to increase public knowledge about waste and the impact of waste. The environment of Witama National Plus is known to be clean, free from garbage, and has carried out waste selected in the trash can. This research is qualitative research conducted in May – June 2023. Data was obtained through class meetings, where 30 female students were gathered in one class to be given knowledge about waste management, and discuss waste management at school. Students are given pre-test and post-test questionnaires. After that, monitoring the improvement of waste management in schools was carried out. Data analyzed qualitatively and tabulatively displayed. The results of questioner and monitoring are known to change student attitudes toward treating waste, first, there is an increase in student knowledge of management litter; Secondly, there is an increase in waste management in terms of personal waste disposal of students based on the type of waste and waste management plans as activities Student Council. Based on these field findings, it can be concluded that student education has a positive impact on changing students' attitudes toward waste. This research contributes to the field of environmental technology.

Conformity assessment analysis of self-declare ecolabel criteria for Indonesia’s tourism villages development in Cikolelet, Banten Province

This study aimed to observe the potential of conformity ecolabel self-declaration claims in Cikolelet Tourism Village, Banten Province, Indonesia. The village has an alternative tourism highland nature, unique culture, creative industry, and environmental conservation. Local people and tourism activities impacted the quality of the village, especially waste management. The literature review and field observation were applied to assess the Self Declare Ecolabel Criteria for waste management in Cikolelet using applicable standards and regulations in Indonesia. The scope of waste management applied to the tourism village includes compostable, recyclable, reusable, and waste reduction. According to the result of assessment and observations, generally, Cikolelet Tourism Village has made environmental management efforts. However, some lack of waste management in terms of waste reduction and handling, including sorting, transportation, processing, and final disposal, requires some improvements to comply with environmentally friendly criteria. A strong commitment is required to actualize the scope of the ecolabel self-declaration.

Peningkatan Pengetahuan Masyarakat Tentang Pengelolaan dan Pemilahan Sampah di Kelurahan Karangjati Kecamatan Bargas Kabupaten Semarang

This article discusses the management of household waste disposal and segregation in Karangjati Village, Bergas District, Semarang Regency. The background of this activity is that most of the people in this village work as factory workers, and they still have limitations in terms of waste management. Through Community Service this time it is hoped to be able to provide solutions to the problems faced by residents in Karangjati Village. The method for implementing this activity consists of (1) preparation, (2) implementation, and (3) evaluation with participants. The activity begins with the delivery of material with lectures, discussions, questions and answers about waste management and demonstrations about handling household waste such as food scraps and leaves for composting. The results of this community service activity show that the participants who took part in the activity from the beginning to the end of the activity have succeeded in increasing their understanding of waste management. This is indicated by the seriousness of the activity participants when doing waste sorting and composting practices.

Recycle potential of thermoplastic composites

Thermoplastic composite materials have become indispensable for the aerospace industry due to their processing and recycling potentials. The use of recyclable thermoplastic composites in aerospace manufacturing, offers a solution to the composite waste. It is a fact that a lot of waste convenient materials emerge every year. In this study, the advantages of thermoplastic composites being suitable for recycling and the benefits of recycling as a waste management in terms of environment, economy and energy were evaluated. Current outcomes indicate that thermoplastic composites are quite convenient for recycling and reshaping. In this context, the use of recyclable thermoplastics in production provides economic and environmental benefit by reducing the production of zero materials.

A typology of consumers regarding perceived obsolescence: The paradox of eco-conscious consumers

The lifespan of durable goods is a global concern because it has consequences not only in terms of waste management and natural resources but also in terms of consumer well-being. Companies and consumers are concerned, in particular, by the frequency of product replacement, which itself depends, on the consumer side, on their evaluations of the product's perceived obsolescence. The objective of this article is to better explain the intention to replace a durable good while it is still in working order. More specifically, we investigate the role of perceived product obsolescence (PPO) on product replacement intention. An exploratory qualitative study (n = 10) leads to a definition of PPO as the difference between the perceived value of a product owned and what is currently available on the market. Four data collections (n = 948) form the basis for the development of a PPO measurement scale involving five dimensions (aesthetic, social, technological, commercial, environmental), and their association with product replacement intention is demonstrated. Finally, a typology of consumers with respect to their “PPO scores and individual characteristics” is built. We show that the most ecologically aware consumers are also the ones who intend to replace the perceived obsolete product the quickest, as they perceive that it is not ecologically efficient enough. These results and this paradox allow us to formulate societal recommendations.

(Un)Learning sustainability practices in a multi-tiered supply chain: an interpretive study

PurposeAlthough the number of studies that investigate supply chain sustainability learning has increased, little is known about the way sub-suppliers build knowledge and learn sustainability practices. Thus, moving beyond merely investigating the accumulation of knowledge, this research explores sub-suppliers’ knowing that supports the learning of sustainability practices in a multi-tiered food supply chain.Design/methodology/approachIn the conduct of this interpretive research in South Brazil, two ethnographies were completed during 74 days of observations to understand similarities and differences between certified and non-certified sub-suppliers with respect to sustainability practices. As part of our research conducted in the context of poultry production, secondary data and data gathered through semi-structured interviews with representatives of the buyer and first-tier supplier firms were used to provide a better comprehension of the multi-tiered supply chain context. Then, we executed an interpretive textual analysis.FindingsOur investigation explored six vignettes to reveal ways of learning sustainability practices in terms of waste management, biosecurity and animal welfare. Although the buyer firm requested these practices, we noted that the first-tier supplier was responsible for translating the practices to sub-suppliers. Moreover, we found that sustainability learning was shaped by the sub-supplier context embodied in knowledge through knowing. The ways of learning were related to sharing knowledge between experts and novices with the support of material practices; however, knowledge was also gained by unlearning some knowledge shared by the supplier. Sustainability practice learning, thus, was performed in a space of learning via knowledge creation among practitioners.Practical implicationsRecognising how sustainability learning happens in a multi-tiered supply chain context can help managers to develop plans to implement sustainability practices that will broaden their sustainability knowledge.Originality/valueUnlike previous studies on supply chain sustainability learning, we reveal ways that sustainability practices emerge from knowledge that results from sub-suppliers’ knowing. We also explain how unlearning can consciously occur in several situations of sustainability learning.

PELATIHAN PEMANFAATAN BARANG BEKAS SEBAGAI MEDIA PEMBELAJARAN

Garbage is material that is disposed of by humans and is not used. Garbage is a very big problem, besides having a sale value, trash or used goods can be used to make learning media that are very useful for the learning process. Learning media is one of the tools used by teachers and functions to stimulate the mind, attention, and motivation to learn in students. The implementation method using community education and training methods aims to increase teacher creativity and can reduce waste pollution in Lennggajaya Village. The results of the service prove that learning media can help students' thinking processes become faster and easier to understand, arouse student motivation and teaching methods will be more varied. Based on the results of this evaluation, it can have an impact on reducing the accumulation of waste in Leggahjaya Village. By utilizing used goods in the surrounding environment, it can help in terms of waste management and using used goods as learning media in elementary schools, so it will directly save costs in making media in schools.

STUDI KARAKTERISTIK PROSES PIROLISIS CEPAT RDF-5 BEBRBAHAN DASAR LIMBAH AREN DAN KOPI DENGAN PENGIKAT LIMBAH PLASTIK TERHADAP KUANTITAS BIO-OIL

<p>Currently, the Indonesian people are faced with various problems in terms of waste management, both organic and inorganic waste. Some of the wastes that can be used are palm waste, coffee grounds and HDPE plastic waste which can be used as alternative fuels, one of which is through the pyrolysis process. Pyrolysis is a process of chemical decomposition of a material thermally in the absence of oxygen. This pyrolysis process converts RDF-5 biomass into a liquid smoke product in the form of bio-oil. This study aims to determine the quantity of pyrolysis oil through the best variation of the composition ratio used. In this study used composition ratio variables, namely 50%:30%:20%, 40%:40%:20%, and 30%:50%:20%. The results of this study obtained the best quantity from a mixture ratio of 50% palm waste, 30% coffee grounds and 20% HDPE plastic to produce 200 ml. The composition ratio affects the quantity of pyrolysis oil results. RDF-5 from palm waste and coffee grounds with HDPE plastic waste binder produces a quantity that tends to decrease as the composition ratio of palm waste waste decreases.</p>

Corn cob biochar as agricultural waste management for increasing soil resilient and crop yield

For the purpose of climate change mitigation and adaption, biochar is a solution for managing agricultural waste by maximizing its addition to soil. The conversion of corn cobs to biochar have advantages in terms of waste management and improving soil properties. This research aims to utilize corn cob biochar to enhance soil properties and corn yield. The study was conducted on September to December 2021 at Karangrejo village, South Lampung. The research arranged by randomized block design with 6 replications. The treatments tested were: 1) manure compost 2 tha-1; 2) corn cob biochar (CCBC) 5 tha-1+compost manure 2 tha-1; 3) Co-compost CCBC-manure 7 tha-1 and 4) Co-compost CCBC-manure 5 tha-1. Parameters observed were soil properties and dry grain yield. The research results showed that after one season, the application of CCBC, either as a single or in co-compost biochar-manure, increased soil porosity, soil pH to be 4.68 but no significantly differences in soil organic carbon content. The addition of co-compost CCBC-manure of 7 tha-1 or 5 th-1 was able to decrease the Al3+ content and increase dry grain as well. The conversion of corn cobs into biochar was not only increasing soil properties but also reduces carbon loss from agricultural waste.