1. Solid waste management and its problem in Asmara city of EritreaMd. Minhajul Hoda, Masihulla Khan, 2025, original scientific article Abstract: Urbanization, rising incomes, and lifestyle changes are major drivers of municipal solid waste generation, especially in developing countries. Asmara, Eritrea, faces significant waste management challenges, particularly due to a large, disorganized open dumping site at Betghiorghish. This site lacks a proper recycling strategy and threatens local biodiversity. A study was conducted to evaluate the types and amounts of waste generated in Asmara, using primary data collected from various economic groups through questionnaires. Study found a positive correlation between urbanization and waste generation. Moreover, different economic strata have different amount and nature of waste. There is report of increasing amount of non-biodegradable waste among the higher income people/region. An integrated sustainable planning is needed to manage the municipal waste.
Keywords: solid waste, developing countries, dumping site, waste management, municipal garbage
Published in DKUM: 16.01.2026; Views: 0; Downloads: 0
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2. The impact of using different lean manufacturing tools on waste reductionI. Leksic, Nedeljko Štefanić, Ivica Veža, 2020, original scientific article Abstract: Lean and green production was introduced to the western manufacturing industry nearly thirty years ago. The essence of the new business model was to eliminate waste through lean tools according to Taiichi Ohno's eight categories of waste. Many companies became more competitive with waste reduction techniques but some of them faced, and still are facing failures. Such failures are closely related with misapplication of lean and green tools, and its sequential order of implementation. In order to define most powerful lean tools for reduction of certain types of waste, a study was made among lean companies. The concept of a study was to define best lean toolbox for reduction of each category of waste and to determine right sequential order of lean tools implementation. Stepwise multiple regression model revealed that Total Productive Maintenance, Poka-Yoke, Kaizen, 5S, Kanban, Six Big Losses, Heijunka, Takt Time, Andon, OEE, SMED, and KPIs are best waste management techniques. Nevertheless, it has been demonstrated that 5S, Kaizen, Kanban, Poka-Yoke and TPM are highly recommended for start of every lean manufacturing initiative.
Keywords: green production, lean manufacturing, lean tools, waste reduction, waste management
Published in DKUM: 13.01.2026; Views: 0; Downloads: 1
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3. Zero waste initiatives in Slovenian municipalities : a material flow and life cycle assessment analysesKristijan Brglez, Rebeka Kovačič Lukman, Roman Gumzej, 2025, original scientific article Abstract: The European Union (EU) has implemented several strategies, including the zero-waste initiative, to minimize waste generation and enhance resource efficiency. Slovenia demonstrates this policy with the “Zero Waste Municipalities” project, which has shown notable success, but also highlights opportunities for further improvement. This study assesses the effectiveness of zero-waste initiatives and municipal solid waste management (MSWM) strategies across Slovenian municipalities using Material Flow Analysis (MFA) and Life Cycle Assessment (LCA). MFA results from eight municipalities indicate that biowaste (averaging 42.49 %) and paper (21.78 %) constitute the largest fractions of collected municipal waste. LCA results highlight that, on a per capita basis, environmental impacts in urban areas are generally lower than in rural areas for glass, wood, biowaste, and plastic waste streams, but higher for metal and paper. Scenario modelling for Ljubljana demonstrates that meeting the EU recycling targets for 2025 and 2030 would lead to substantial reductions in environmental impacts—especially in terms of Global Warming Potential (GWP) and Abiotic Depletion Potential (ADP). Specifically, achieving the 2030 targets could reduce CO 2 emissions from paper, plastic, and wood waste by 52 %, 25 %, and 77 %, respectively, compared to current baseline recycling ratios. The integration of MFA and LCA provides a comprehensive and quantitative assessment and insight into current waste management practices in Slovenian municipalities, accelerating a transition towards zero waste and circular municipalities. The findings offer valuable information for decision-makers, researchers and stakeholders aligning local waste management strategies with broader EU objectives.
Keywords: zero waste initiatives, material flow analysis, life cycle assessment, municipal solid waste management, environmental impacts, Slovenia
Published in DKUM: 19.12.2025; Views: 0; Downloads: 0
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4. Does the education level of consumers influence their recycling and environmental protection attitudes? : evidence from CroatiaDoroteja Mandarić, Anica Hunjet, 2023, original scientific article Abstract: The empirical link between education and consumption varies depending on contextual factors. Some studies have sought a contemporary understanding of the education-environmental concern connection. Evidence shows that education levels might significantly impact environmental actions. Still, some research shows that the influence of education might not significantly impact green attitudes or depend on various contextual factors. This research explores whether the education level of Croatian consumers statistically influences their attitudes towards environmental care, recycling, and waste disposal. It aims to determine whether there exists a statistically significant difference in attitudes among consumers with varying levels of education. By exploring this relationship, the article aims to shed light on the potential role of education in shaping environmentally friendly behaviours. By addressing this research gap and examining the specific case of Croatia, the article aims to contribute to the broader understanding of how education influences environmental consciousness and action, ultimately contributing to global efforts for a more sustainable future.
Keywords: consumer behaviorđ, recycling, environmental protection, waste management, Croatia
Published in DKUM: 28.05.2025; Views: 0; Downloads: 3
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5. Multicriteria assessment of the quality of waste sorting centers - ǂaǂ case studyKarmen Pažek, Jernej Prišenk, Simon Bukovski, Boris Prevolšek, Črtomir Rozman, 2020, original scientific article Abstract: In this paper, the quality of the municipal waste sorting process in seven waste management centers in Slovenia was assessed using the qualitative multicriteria analysis (MCA) method DEX (Decision EXpert) implemented in DEXi software, which is based on multicriteria decomposition of the problem and utility functions in the form of ʺif-thenʺ decision rules. The study was based on eight types of secondary raw materials. The quality of the secondary raw materials, the regularity of the delivery of secondary raw materials to recycling units based on the sorting efficiency, and the loading weight of the individual baled fractions in the transport of secondary raw materials for recycling were the main parameters used in the model. The final assessment shows good waste management service in centers A and D. Centers B, C, and F were rated ʺaverageʺ. The ʺbadʺ rating was assigned to centers E and G.
Keywords: waste sorting, quality management, multicriteria decision analysis, expert system DEXi
Published in DKUM: 03.02.2025; Views: 0; Downloads: 8
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6. A waste separation system based on sensor technology and deep learning: a simple approach applied to a case study of plastic packaging wasteRok Pučnik, Monika Dokl, Yee Van Fan, Annamaria Vujanović, Zorka Novak-Pintarič, Kathleen B. Aviso, Raymond R. Tan, Bojan Pahor, Zdravko Kravanja, Lidija Čuček, 2024, original scientific article Keywords: waste management, smart waste bin system, central post-sorting, sensor technology, deep learning, convolutional neural networks
Published in DKUM: 23.08.2024; Views: 51; Downloads: 14
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7. Rationalisation of costs in the collection, segregation and transport of municipal wastePaweł Zając, Ivona Bajor, Matevž Obrecht, Stanisław Ejdys, 2023, original scientific article Abstract: The article contains answers to three "why" questions: - why the waste management system still does not bring the expected results, and the Polish state is one of the lowest-ranking in the European score regarding the amount of segregated waste; - why the sale of selected secondary raw materials and their material reuse in production processes do not cover the costs related to waste management; - why it does not bring additional profits. The article is based on research conducted in Wroclaw from 1998 to 2018. There is a cost model that can be adapted to similar cases. The article deals with removing organisational and/or technical reasons causing the stagnation of selective waste collection.
Keywords: waste, mixed, sorting, fee, management
Published in DKUM: 16.02.2024; Views: 204; Downloads: 22
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8. An analysis of the responsibility for zero wasteIvana Tršelič, Daniel Rolph Schneider, Niko Samec, Filip Kokalj, 2019, original scientific article Abstract: European Union Directive 2008/98/EC sets the priority hierarchy of the prevention of waste, re-using waste, recycling waste, waste recovery, and waste disposal. Although every one of us is in daily contact with waste, we do not have the knowledge that can lead us to the sound management of waste from the beginning, before products are identified as waste. Zero waste is a fundamental concept of the sustainable community of the future. It is a phrase frequently used by politicians seeking to upgrade the municipal solid waste management systems in their communities. In this manner, the responsibility of zero waste is given to the waste management process instead of to householders. Householders then equate waste prevention with recycling and the proper waste management of the collectors, public services, or waste management company. In reality, zero waste starts with each one of us at home. Households should aim to reduce consumption and undertake repairs to extend the life span of products. Behaviour change can only start with knowledge. In reality, waste prevention does not include recycling. Recycling leads to a combined reduction of waste brought to landfill and raw material extraction. The present paper evaluates household waste to clarify the facts. It analyses the composition of three streams: municipal solid waste, separately collected packaging waste, and bulky waste in different regions of Slovenia. The research defines waste into five different categories. The first category is waste that can and should be avoided. The second category is waste that can be re-used. Further on, the research expands by researching the market of the third category that defines recyclables, which waste can be recycled; the last two categories are the waste that we are fighting with at the end of the waste management process, either to make it to the waste-to-energy process or to comply with landfill restrictions. At the end of the research, we summarize the situation of household waste in 2018. Our goal is to reduce the quantity of waste, making only waste that can be recycled. If we consider waste prevention to be a fight against waste, we can put our plan in place by taking the first step: getting to know our enemy.
Keywords: municipal solid waste, zero waste, recycling, lightweight packaging waste, waste management, material recovery
Published in DKUM: 05.12.2023; Views: 397; Downloads: 56
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9. Potential of using waste materials in flexible pavement structures identified by optimization design approachPrimož Jelušič, Süleyman Gücek, Bojan Žlender, Cahit Gürer, Rok Varga, Tamara Bračko, Murat V. Taciroğlu, Burak E. Korkmaz, Şule Yarcı, Borut Macuh, 2023, original scientific article Abstract: This paper presents the design of geosynthetic reinforced flexible pavements and their modification by incorporating waste materials into bonded and unbonded layers of the pavement structure. The optimal design of flexible pavements was achieved by minimizing the construction cost of the pavement. The incorporation of waste materials into the pavement structure affects the material properties. Therefore, along with the traffic load, the effects of the material properties of the asphalt concrete, base layer, sub-base layer, and subgrade were analyzed in terms of pavement structure costs and CO2 emissions of materials used in pavement construction. In addition, a comparison was made between pavements with and without geosynthetic reinforcement in terms of design, optimum construction cost, and CO2 emissions. The use of geosynthetics is even more effective in pavement structures that contain waste materials in an unbound layer, both in terms of cost and CO2 emissions. The minimum value of the California Bearing Ratio of the subgrade was determined at which the use of geosynthetic reinforcement for pavement structure with and without the inclusion of waste materials is economically and sustainably justified. The use of geosynthetics could result in a 15% reduction in pavement structure cost and a 9% reduction in CO2 emissions due to the reduced thickness of unbound layers. In addition, reducing the CBR of the unbound layer from 100% to 30% due to the inclusion of waste materials implies a cost increase of up to 13%. While the present study is based on an empirical pavement design method in which pavement thickness is limited by the pavement thickness index, the same minimum thicknesses are obtained in the optimization process regardless of whether the objective function is the minimum construction cost or minimum CO2 emissions.
Keywords: pavement design, waste materials, optimization, minimum construction cost, CO2 emissions, geosynthetics, waste management
Published in DKUM: 18.09.2023; Views: 644; Downloads: 70
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