Effective Waste Management Strategies Research Articles

The Strategy of the Yogyakarta City Government in Implementing a Sustainable Zero Inorganic Waste Policy

This research aims to analyze the implementation of the Zero Inorganic Waste policy enacted by the Yogyakarta City Government, focusing on waste sorting strategies, infrastructure support, and challenges encountered in managing inorganic waste. The qualitative methodology involves field observations, in-depth interviews, and focus group discussions with various stakeholders. The research findings indicate that while this policy has successfully raised public awareness about waste separation, significant challenges remain, such as low public participation, limited infrastructure, and insufficient education efforts. Therefore, the government must increase resource allocation for waste management infrastructure and develop more effective educational programs to encourage behavioral change. This study’s contribution to urban waste management literature lies in its emphasis on the importance of a participatory and systematic approach to waste management and the need for public behavioral change to achieve sustainability goals. The conclusions of this study provide valuable insights for policymakers and practitioners in formulating more effective waste management strategies in Yogyakarta and other urban areas. This research also offers substantial theoretical contributions, particularly regarding the importance of participatory and systematic approaches in urban waste management and the necessity for societal behavioral changes to achieve sustainability objectives.

Microorganisms of solid waste as an opportunity for waste disposal and increasing environmental sustainability in the south of Kazakhstan

The study is devoted to the problem of processing the organic waste that is generated as a result of paper, textiles and other industries production as well as food waste. The growth of economic activity in Kazakhstan has resulted in a significant challenge with regard to industrial waste management. The accumulation of waste on the territory of the country has reached 31.72 billion tonnes, comprising approximately 2.5 billion tonnes of hazardous waste, 50 million tonnes of phosphorus-containing waste, over 2.5 million tonnes of lead-zinc waste and more than 120 million tonnes of solid domestic waste. The study object was the Shymkent-Kokys polygons. According to the research carried out, it was determined that the titer of microorganisms of the studied groups is 1–10 CFU/g in the soils selected around the garbage in the area of the Shymkent landfill. The titer of microorganisms in the soil horizons was high at a depth of 20–30 cm and the titer were 109 cells/mL. The structure of the soil microbiome obtained around the Shymkent Waste Landfill consists of actinomycetes, micromycetes, heterotrophic bacteria, nitrifying, nitrogen-fixing bacteria, enterobacteria, as well as algae and protozoa. It was found that strains KPA1, KPA2 Pseudomonas sp. strains KPA3, KPA4, KPA5 Bacillus sp. isolated from the soils of the Shymkent-Kokys landfill are able to recycle domestic waste with a high content of cellulose and organic substances up to 95%–97%. The findings can be used to develop more effective organic cellulosic waste management strategies and improve the environmental sustainability of various industries.

Time Series approach to map areas of Agricultural Plastic Waste generation

Abstract. The escalating presence of plastics in agriculture has raised concerns regarding Agricultural Plastic Waste (APW). Hitherto, a lack of comprehensive plasticulture data impedes effective waste management strategies, potentially resulting in plastic pollution and contributing to microplastic formation. APW locations and quantities are pivotal for territorial planning and the formulation of public policies on waste management and land use. Remote detection of agri-plastics has garnered increased consideration, particularly in mapping plastic-mulched farmlands (PMFs) dispersed in extensive regions. This study investigates whether the use of satellite image time series can map PMFs accurately. We assessed pixel-based classification using a 16-day composite time series of Sentinel-2 imagery (S2-16D) obtained from the Brazil Data Cube project. The Plastic-Mulched Landcover Index (PMLI) was joined into S2-16D bands because it is an index focused on PMF detection. Four classifiers (RF, MLP, L-TAE, and TCNN) were compared through agreed classification metrics. The most promising outcome showed an overall accuracy of 100% employing L-TAE but with visible noise in the map. The time series enhanced accuracy while minimizing background confusion, offering a viable solution for PMF detection. The PMF map presented herein represents an initial stride toward fostering circularity in plasticulture throughout South America.

Simulation of Pyrolysis Process for Waste Plastics Using Aspen Plus: Performance and Emission Analysis of PPO-Diesel and PPO-Biodiesel Blends

As the global population increases, so does the usage of plastics in households, water bottles, and garbage bags, posing significant environmental threats. Plastics, being inorganic waste with long degradation periods, contaminate air, water, and soil when disposed of in landfills. Given the rise in global plastic production, effective waste management strategies are essential. This study utilized Aspen Plus simulation to analyze the pyrolysis process of waste plastics, specifically PE, PS, and LDPE. Simulations were conducted with temperature variations between 350°C to 550°C to determine the optimum conditions. Additionally, the study compared engine performance and emissions using mixtures of plastic pyrolysis oil (PPO), biodiesel from waste cooking oil (WCO), and diesel. Engine performance tests were conducted with variations in engine speed and load for PPO-diesel and PPO-biodiesel mixtures. Simulation results showed that the optimal pyrolysis temperature for the highest PPO yield was 450°C, producing 89% for PS plastic. Pyrolysis at 500°C yielded 85% oil for PE, 83% for LDPE, and 60% for mixed plastics. Engine performance tests indicated that adding PPO to diesel and WCO biodiesel significantly affected engine performance and emissions. A 5% PPO blend in diesel demonstrated better brake thermal efficiency and lower BSFC compared to higher PPO blends.

Plastic Use in Agriculture: Balancing Benefits, Environmental Impacts, and Sustainable Solutions

Plastics have become an essential component of modern agriculture, significantly enhancing productivity, improving water efficiency, and protecting crops due to their versatility, durability, and cost-effectiveness. Their widespread use in applications such as plastic mulches, greenhouse covers, irrigation systems, and packaging has revolutionized crop production by boosting yields and aiding pest control. However, the growing reliance on plastics in agriculture, commonly referred to as plasticulture, has raised significant environmental concerns. These include soil contamination, diminished soil fertility, microplastic pollution, and greenhouse gas emissions, all of which pose serious long-term risks to ecosystems. This review offers a comprehensive exploration of plastic use in agriculture, detailing its various applications and the associated environmental challenges. The persistence of plastic waste in soils, waterways, and natural habitats not only leads to pollution and biodiversity loss but also presents potential threats to human health. This review emphasizes the urgent need for sustainable solutions, including effective waste management strategies and advancements in biodegradable and bio-based plastics. It also discusses the potential of recycling technologies and the role of policy reform in minimizing the ecological footprint of agricultural plastics. In conclusion, this review advocates for a balanced approach that maximizes the agronomic benefits of plastics while minimizing their environmental impacts through innovation, research, and the promotion of sustainable agricultural practices.

Degradation of Polymer Materials in the Environment and Its Impact on the Health of Experimental Animals: A Review

The extensive use of polymeric materials has resulted in significant environmental pollution, prompting the need for a deeper understanding of their degradation processes and impacts. This review provides a comprehensive analysis of the degradation of polymeric materials in the environment and their impact on the health of experimental animals. It identifies common polymers, delineates their degradation pathways, and describes the resulting products under different environmental conditions. The review covers physical, chemical, and biological degradation mechanisms, highlighting the complex interplay of factors influencing these processes. Furthermore, it examines the health implications of degradation products, using experimental animals as proxies for assessing potential risks to human health. By synthesizing current research, the review focuses on studies related to small organisms (primarily rodents and invertebrates, supplemented by fish and mollusks) to explore the effects of polymer materials on living organisms and underscores the urgency of developing and implementing effective polymer waste management strategies. These strategies are crucial for mitigating the adverse environmental and health impacts of polymer degradation, thus promoting a more sustainable interaction between human activities and the natural environment.

Waste Management Strategies by the Village Government

The general background waste management is a critical issue for sustainable community development, particularly in rural areas where resources are often constrained. Specific background in Wedoroklurak Village, effective waste management practices have become increasingly necessary due to rising waste production and its environmental impacts. Knowledge Gap: Although there is considerable literature on community-based waste management, there is limited research examining the specific roles of village governments in facilitating effective waste management strategies. Aims this study to analyze the roles of the village government in waste management, particularly its functions as a facilitator, mobilizer, and regulator. Results: The research findings reveal that the village government has successfully served as a facilitator by providing essential infrastructure, such as waste disposal facilities and educational resources for residents. Moreover, it has acted as a mobilizer by encouraging community participation through training programs. However, the government’s regulatory role has been inadequate, primarily relying on informal agreements rather than formal regulations. Novelty this study contributes valuable insights into the governance of waste management in rural contexts, emphasizing the need for more robust regulatory frameworks. Implications the findings suggest that strengthening regulatory measures can significantly improve waste management practices and promote sustainable environmental health in rural communities. Highlights: The government facilitates waste management through resource provision. Community education and training are essential for environmental awareness. Regulatory measures are needed for effective waste management practices. Keywords: Waste Management, Government, Community, Facilitator, Mobilizer

ASSESSMENT OF WASTE GENERATION, COMPOSITION AND REVENUE LOSS ESTIMATION DUE TO FLOATABLE RIVERINE LITTER AT LOG BOOM SUNGAI PINANG, KLANG, MALAYSIA

The presence of floatable riverine litter poses a significant environmental challenge, impacting both aquatic ecosystems and local economies. The purpose of this study is to quantify waste generation and composition based on two different seasons and estimate revenue loss from floatable litter at the log boom in Sungai Pinang. Using systematic waste sampling and analysis techniques, we categorised and measured the types and volumes of waste collected over a specified period. The data revealed substantial quantities of plastic, organic matter, and miscellaneous debris. To estimate the economic impact, we employed a revenue loss model that considers cleanup costs, damage to local fisheries, and the tourism sector. Our findings indicate that the accumulation of floatable riverine litter results in considerable economic losses annually. The study highlights the urgent need for effective waste management strategies and policies to mitigate the negative impacts of riverine litter on both the environment and the local economy.

ON SOME ISSUES OF IMPROVING LEGISLATION IN THE FIELD OF WASTE MANAGEMENT OF PRODUCTION AND CONSUMPTION

Environmental pollution caused by waste-related activities remains one of the main problems of modern society. Improper waste management has serious consequences for the environment, human health and the economy. It is necessary to strictly comply with legislation, develop effective waste management strategies and raise awareness of environmental responsibility to solve these problems. Legislation on the management of production and consumption waste is regulated by regulatory legal acts, primarily the Constitution of the Republic of Kazakhstan, the Environmental Code of the Republic of Kazakhstan, etc. The article suggests some ways to improve the legislation of the Republic of Kazakhstan in the field of waste management, developed scientifically sound recommendations and proposals for their implementation. In this regard, the authors identified gaps, as well as duplicate, outdated norms, conducted an audit of the conceptual apparatus and assessed the effectiveness of the implementation of the Law. In particular, it is recommended to adopt a special law regulating public relations related to the management of production and consumption waste. A review and analysis of scientific and legal approaches to the management of production and consumption waste has been carried out, on the basis of which it is proposed to update the terminology used within the framework of waste management legislation: «waste», «waste of production», «waste of consumption», «waste of consumption and production». Thus, the relevance of this study is enhanced due to the objective needs of further improving the effectiveness of legislation in the field of waste management, its consistency and consistency.

LOCAL PERSPECTIVES ON COMMUNITY-DRIVEN MARINE DEBRIS MANAGEMENT FOR SUSTAINABLE TOURISM IN THE ANDAMAN ISLANDS, THAILAND

Community-driven marine debris management is key to sustainable island tourism. This qualitative research aimed to explain perspectives on waste management for sustainable tourism, via two case studies of Andaman Islands. Data were collected by reviewing secondary data, in-depth interviews, and focus group discussions with nineteen key informants: 6 marine debris collectors, 6 community leaders, 5 entrepreneurs, and 2 government officers. Content and narrative analyses were applied. Marine debris management comprised 2 main perspectives with 4 minor perspectives, valuable for policy and long-term planning. Notably, understanding internal factors like beliefs and motivations towards sustainability is crucial for effective waste management strategies.

Physical characterization of agar-based biodegradable films derived from nonhazardous laboratory waste

Globally, approximately 2.12 billion tons of waste are annually disposed of, with laboratories significantly contributing across diverse waste streams. Effective waste management strategies are crucial to mitigate environmental impact and promote sustainability within scientific communities. This study addresses the challenges by introducing a novel method that transforms laboratory media waste into a valuable biopolymer named “Agastic.” The process involves repurposing agar extracted from bulk laboratory waste, blending it with bio-based plasticizers to produce Agastic sheets exhibiting mechanical properties comparable to traditional bioplastics. Using response surface methodology (RSM) and central composite design (CCD), optimal concentrations of agar (1.5–2.5% w/v), glycerol (0.25–1% v/v), and ethanolamine (0.5–1.5% v/v) were determined. Predictions from Design Expert software indicated impressive tensile strength up to 14.31 MPa for AGA-1 and elongation at break up to 52% for AGA-2. Fourier Transform Infrared Spectroscopy (FTIR) analysis confirmed agarose structural features in AGA-1 and AGA-2. Thermogravimetric analysis (TGA) showed polysaccharide-related breakdown between 38°C and 280°C in AGA-1, peaking at 299.36°C; AGA-2 exhibited diverse thermal decomposition up to 765°C, suggesting their biodegradable potential in packaging applications. Scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS) analysis confirmed nontoxic nature of Agastic and preserved morphological integrity in both samples. Soil degradation studies revealed AGA-1 and AGA-2 losing 71.31% and 70.88% of weight, respectively, over 15 days. This innovation provides a sustainable pathway to repurpose laboratory waste into eco-friendly bioplastics, particularly suitable for moisture-sensitive packaging such as nursery applications. These findings underscore Agastic films’ promise as environmentally friendly alternatives to traditional plastics, supporting circular bioeconomy principles and significantly reducing ecological impacts associated with plastic waste.

Role of big data analytics and hyperspectral imaging in waste management for circular economy

The accumulation of waste has a profound impact on the environment, prompting a crucial discussion about effective waste management strategies aligned with Oman Vision 2040’s sustainability goals. The consequences of municipal solid waste generation have multifaceted impacts on the environment, public health, and overall well-being of communities. Addressing these consequences requires a holistic approach that includes the integration of sustainable waste management technologies to foster a circular economy. This paper emphasizes the necessity for a paradigm shift in waste management methodologies, emphasizing the importance of Hyperspectral Imaging and Big Data Analytics into municipal solid waste management processes. This paper explores the synergistic relationship between hyperspectral imaging which is capable of precise material identification, and big data analytics to facilitate comprehensive data analysis. The integration aims to optimize waste segregation, resource recovery, and recycling processes. The utilization of data-driven insights enables predictive modeling and the identification of trends thereby facilitating more efficient and sustainable waste management practices. The harnessing of big data analytics empowers stakeholders to make informed decisions in waste management to achieve long-term environmental, and economic sustainability.

Individual, household and institutional level predictors of waste sorting: Evidence for Ecuador.

The rapid increase in waste generation in developing countries presents significant challenges, necessitating effective waste management strategies. This study examines the influence of individual, household and institutional factors on waste sorting behaviours in Ecuador, employing an ordered logistic regression model. Data were sourced from the 2019 National Multipurpose Household Survey (NMHS) and the Census of Economic Environmental Information in Decentralised Autonomous Governments (CEEIGAD). The NMHS uses a two-stage probabilistic sampling methodology, with census sectors as the primary sampling units and households as the secondary units. After excluding outliers and selecting individuals aged 15-65 years, the final sample consisted of 8601 households, including 26,175 individuals. The findings reveal that personal attributes such as gender, ethnicity, age, marital status and environmental concern significantly influence waste sorting behaviours. Household characteristics, including urban or rural location, are also critical. Institutional factors, such as municipal regulations, waste collection fees and waste separation at source, play essential roles in promoting waste separation. The study highlights the necessity for targeted governmental policies. Recommendations include improving environmental education, increasing sorting infrastructure in urban areas and ensuring waste collection systems maintain the separation of waste streams.

Biochar Derived from Sewage Sludge: The Impact of Pyrolysis Temperature on Chemical Properties and Agronomic Potential

The rising volume of sewage sludge from urbanization poses substantial environmental and public health concerns, underscoring the urgency for the implementation of effective waste management strategies. The objective of this study was to evaluate the influence of pyrolysis temperature on the chemical composition and agronomic potential of biochar derived from sewage sludge. The pyrolysis process was conducted at temperatures ranging from 400 °C to 800 °C, and the resulting biochar was analyzed for pH, electrical conductivity, metal content, and carbon fractions. Additionally, phytotoxicity tests were conducted to assess the impact of the biochar on plant germination. The findings indicated that elevated pyrolysis temperatures resulted in an elevated alkalinity, electrical conductivity, and concentration of alkali metals in the biochar. Conversely, these processes resulted in a reduction in total organic carbon content and an increase in heavy metal content, which may limit the potential for biochar to be used in agricultural applications. The phytotoxicity tests indicated that the biochar produced at lower temperatures (400 °C) exhibited positive effects on plant growth when administered at doses of 5 and 10 t·ha−1. Conversely, the biochar produced at higher temperatures (800 °C) demonstrated significant toxicity. The findings indicate that the pyrolysis temperature is a critical factor in determining the suitability of biochar for agricultural applications. The production of biochar at lower temperatures may offer agronomic benefits, whereas the use of higher temperatures increases stability but is associated with the risk of higher heavy metal concentrations.

Exploring the Utilization of Municipal Solid Waste in Sustainable Construction Materials: A Review

Municipal solid waste (MSW) is a growing problem worldwide, as populations increase, and consumption patterns change. It not only causes pollution and health hazards, but it also results in the depletion of resources. Considering this, the utilization of MSW in sustainable construction materials has become a critical area of research. The purpose of this review study is to explore the various ways in which MSW can be utilized in sustainable construction materials such as fired clay bricks, eco-cement, geo-polymer, fly ash (FA), bottom ash (BA), ceramic bricks, municipal solid waste incineration (MSWI), incineration bottom ash (IBA), and coal bottom ash (CBA). This article also helps to understand the properties of waste-based materials and the potential for their use in various applications. This information renders the construction sector to design and develop standard guidelines for the use of waste-based materials. The significance of this review article lies in its potential to transform the construction sector into a more sustainable and resource efficient sector by leveraging the resources that are already available. Integrating waste into construction materials not only averts the waste from landfills and incinerators, but also facilitates the necessity of raw materials and consequently sustains the natural resources. Additionally, the utilization of waste-based building materials can lead to a reduction in the carbon trace of the construction industry, as waste materials often have lower embodied energy compared to traditional building materials. The outcomes of this review will provide valuable insights into the potential of MSW as a resource in sustainable construction and contribute to the development of effective Municipal Solid Waste Management (MSWM) strategies.

Selecting the Suitable Landfill Location for Efficient Waste Management in Udham Singh Nagar District, Uttarakhand: A Geospatial and Multi-Criteria Approach

The effective management process of solid waste is a pressing concern in Udham Singh Nagar district, where approximately 245 metric tons of waste is generated daily. To address this issue, it is essential to identify suitable landfill sites. This research aims to identify optimal sites for waste disposal in the district by combining the capabilities of Geographic Information Systems (GIS) and Multi-Criteria Decision-Making (MCDM) techniques. A total of ten key factors were evaluated and prioritized according to their respective significance. A comprehensive analysis was conducted using theses parameters, including distance from road networks, rivers, railroads, sensitive area, geology, slope, elevation, population density, soil and land use/land cover (LULC). The study area was categorized into four suitability zones: high, moderate, low, and very low, representing 43.22%, 16.09%, 28.16%, and 12.53% of the area, respectively. The locations were selected based on the optimal distances considered for efficient waste management. The final results were validated using a receiver operating characteristic (ROC) curve, which utilized a randomly selected set of 50 potential landfill site locations. The analysis demonstrated good accuracy, with the area under the curve (AUC) indicating that 84% of the results effectively validated the spatial analysis. To achieve sustainable solid waste management, planners should consider implementing alternative strategies such as source reduction, composting, sanitary landfills, and public awareness programs. The resulting map provides potential sites for landfilling waste, which can aid urban planners and authorities in implementing effective urban waste management strategies.

Remediation of plastic waste generated during the COVID-19 pandemic: A conceptual process design of pyrolysis using polyethylene, polypropylene, polystyrene based polymers

During the COVID-19 pandemic, the increase in plastic-based personal protective equipment has raised concerns about managing medical waste and protecting the environment. This study highlights the need for effective waste management strategies by creating a conceptual process flow diagram and investigating thermal treatment methods like pyrolysis as potential solutions. Using computational modeling and process optimization, the study examines different polymer blends, including High-Density Polyethylene (HDPE), Polystyrene (PS), and Polypropylene (PP), to understand how they behave during pyrolysis and the yields they produce. Two pyrolysis schemes have been developed to handle various polymer blends. In Scheme 1, the liquefied polymer is preheated and then pyrolyzed in a reactor, producing a vapor stream and a residue stream (carbon). The vapor stream is cooled to enhance liquid oil production and then is separated in a distillation column to isolate liquid oil from pyrogas. Scheme 2 follows a similar process but converts a significant portion of liquid hydrocarbons to gas in the distillation column, requiring further gas processing in a one-stage separator column. The results show that temperature significantly impacts liquid yield, with specific temperature ranges leading to increased yield. Additionally, the composition of the polymers and the rate at which the material is fed into the process affect the yields, with specific blends showing promise for higher liquid yield. This study emphasizes the importance of accurate process modeling to optimize the operational parameters and improve the economic viability of plastic pyrolysis technology presenting a promising opportunity to convert plastic waste into valuable resources.

Evaluating Household Hazardous Waste Generation, Composition, and Health Risks in an Urban Municipality

This study aimed to assess the generation rate and composition of household hazardous waste (HHW) in Nakhon Si Thammarat Municipality, Thailand. A questionnaire survey was conducted to collect data on HHW generation and disposal practices from households in the municipality. Soil samples were collected and analyzed for heavy metals (cadmium, chromium, mercury, nickel, and lead) and PCBs contamination. The potential health risks from ingestion exposure associated with heavy metals and polychlorinated biphenyls (PCBs) contamination in the soil were evaluated. The result revealed that in 2023, the HHW generation rate was 11.95 kg/household/year, with the highest percentages occurring of electronic waste (17.40%), fluorescent lamps (16.98%), spray cans (12.38%), cleaning products (11.30%), and engine oil and lubricant oil products (9.87%). The majority of residents (92.90%) disposed of hazardous waste and general waste together in public waste containers. However, the health risk assessment indicated that the levels of heavy metals and PCBs in the soil were within the safe acceptable range for residents, with a total lifetime cancer risk from ingestion exposure of less than 1E-06 for both adults and children. The findings highlight the need for improved waste separation practices and the implementation of effective hazardous waste management strategies to minimize potential health risks and environmental impacts. This study serves as a basis for developing targeted interventions and policies to enhance household hazardous waste management in the municipalities and similar urban areas in Thailand. Doi: 10.28991/HEF-2024-05-03-011 Full Text: PDF

Banana Peel Extracts Enhance Climbing Ability and Extend Lifespan in Drosophila melanogaster.

Banana peels, often discarded as waste, represent one of the most abundant food by-products, highlighting the need for effective waste management and resource recycling strategies. Due to their rich nutritional content, banana peels have been investigated for various health benefits, including anti-obesity effects. In this study, we examined the potential anti-aging properties of banana peel extracts (BPEs) in Drosophila melanogaster. Our findings demonstrated that flies fed with BPEs exhibited an extended lifespan and a significant improvement in age-related decline in climbing ability. Additionally, Dilp2 mRNA expression level is markedly decreased in aged flies fed with BPEs. These results suggest that BPEs may serve as a potential anti-aging agent by enhancing locomotor function and extending lifespan, potentially through the modulation of insulin signaling in D. melanogaster.

Eco-friendly production of biodiesel from Carthamus tinctorius L. seeds using bismuth oxide nanocatalysts derived from Cannabis sativa L. Leaf extract

Global challenges in environmental protection, social welfare, and economic growth necessitate increased energy production and related services. Biofuel production from waste biomass presents a promising solution, given its widespread availability. This study focuses on converting highly potent Carthamus tinctorius L. seed oil (51 % w/w) into sustainable biofuel using a novel, highly reactive, recyclable, and eco-friendly bismuth oxide (Bi2O3) nano-catalyst derived from Cannabis sativa L. leaf extract. The physio-chemical properties of the synthesized biodiesel were analyzed using Gas Chromatography/Mass Spectroscopy (GC-MS), Nuclear Magnetic Resonance (NMR), and Fourier-Transform Infrared Spectroscopy (FTIR). Additionally, the green Bi2O3 nanoparticles were characterized through Scanning Electron Microscopy (SEM), Energy Diffraction X-Ray (EDX), and X-Ray Diffraction (XRD). Optimal conditions for biodiesel production were determined using Response Surface Methodology (RSM) in combination with Central Composite Design (CCD), focusing on molar ratio, catalyst loading, and reaction duration. The highest output (94 %) of C. tinctorius-derived biodiesel (CTBD) was achieved under the following conditions: a temperature (75 °C) for time duration (100 min), a methanol to oil ratio (6:1), and a catalyst loading (0.69 wt%). The resulting biodiesel met international standards, with a sulphur content of 0.00097 wt%, and an acid value of (0.34 mg KOH/g). This study demonstrates that converting C. tinctorius waste seed oil into clean bioenergy is an effective waste management strategy that minimizes environmental impact.