Waste Processing Research Articles

Innovative Strategies in Lean Supply Chain Management: Enhancing Efficiency in Healthcare

In the ever-evolving healthcare landscape, integrating Lean principles into supply chain management has emerged as a crucial strategy for enhancing efficiency and resource allocation. This paper explores recent advances in Lean Supply Chain Management (LSCM) within the healthcare sector and presents innovative strategies to optimize resource allocation. Synthesizing existing literature and case studies elucidates the principles of Lean thinking and their application to healthcare supply chains. Key topics addressed include waste reduction, process optimization, inventory management, and collaboration among stakeholders. Additionally, the role of technology and data analytics in streamlining supply chain operations is investigated. Furthermore, the paper delves into challenges and potential barriers to implementing LSCM in healthcare settings, along with recommendations for overcoming them. A comprehensive analysis of current trends and practices provides valuable insights for healthcare organizations seeking to enhance efficiency and effectiveness in their supply chain management practices.

Modified electrode configuration of the free-fall tribo-electrostatic separator for the recovery of polyethylene and polypropylene flakes from shredded packaging waste

Free-fall tribo-electrostatic separators have long been used for sorting granular plastic wastes. The aim of this paper is to propose a modified configuration of the electrode system of such a separator and validate its effectiveness for processing a mixture of polyethylene (PE) and polypropylene (PP) flakes originating from the processing of packaging waste at GRANUPLAST Company, Jassans-Riottier, France. The mixture to be treated is not homogeneous and consisted of roughly 2/3 PE and 1/3 PP. The granular mixture samples were charged by triboelectric effect in a fluidized bed device, and then introduced into a laboratory-scale free-fall electrostatic separator. Preliminary tests were conducted to ascertain the mass of the mixture to be introduced in the fluidized bed and the duration of the charging process. Better results were obtained with the modified electrode configuration of the free-fall electrostatic separator. Thus, from 100 g of mixed flakes, 98.2% of PE and 96.6% of PP were recovered with purities of 99.1% and 98%, respectively. In addition, numerical modeling of the PP and PE particles trajectory was performed to simulate the behavior of charged particles in the standard and modified electrode configurations. Work is in progress for the industrial implementation of this tribo- electrostatic separation technology.

Efficient conversion process and mechanism of bromine in bromine-rich saline wastewater

Bromine resources, widely utilized in basic chemical engineering, are considered non-renewable. A substantial amount of Bromine-Rich Saline Wastewater (BRSW), a hazardous waste, is generated during the smelting process of waste printed circuit boards (WPCBs). The efficient conversion of bromine resources is important in BRSW, which contain high concentrations of bromide ions. This study developed a synergistic treatment method utilizing electrolytic manganese anode sludge (EMAS) achieved efficient conversion of Br− to Br2 in BRSW. Optimal technical parameters are determined through single-factor experiments, and the oxidative acid leaching process was optimized using response surface methodology (RSM). The significant influencing factors for Br− conversion were ranked as acidity > anode mud addition amount > temperature > time, resulting in a bromine conversion efficiency of 96.55%. Kinetic studies of bromine conversion in BRSW during the oxidation-acid leaching process indicated a two-stage process: Stage I being a chemical reaction control model and Stage II being a diffusion control model. The reaction mechanism was elucidated, where H+ initially breaks the Mn-O bond in MnO2, exposing O vacancies and forming Mn4+, leading to a redox reaction between free Br− and Mn4+. This research embodies the concept of synergistic solid waste disposal, achieving cost-effectiveness and streamlined preparation of bromine, and providing technical and theoretical support for bromine resource recovery in BRSW.

Recycling Pesticide Plastic Containers in Indonesia: An Evaluation of Technical, Economic, and Regulatory Impact Feasibility

This study explores the feasibility of recycling pesticide plastic packaging in Indonesia, focusing on technical, economic, and regulatory aspects. Technical feasibility analysis highlights challenges in material composition and pesticide residue removal, emphasizing the effectiveness of a cleaning process to ensure safety and quality of recycled materials. Economically, the study demonstrates significant cost savings when incorporating at least 40% recycled material into new packaging, enhancing market competitiveness. The regulatory analysis emphasizes the recommendation to the Indonesian government to reclassify waste pesticide containers from hazardous to non-hazardous materials following the validation of the triple rinsing trial’s effectiveness in removing pesticide residue. Reclassifying the containers as non-hazardous will reduce transportation costs from the source locations, such as plantations or farming areas, to the waste processing plant, thereby improving the economic feasibility of the pesticide plastic container recycling. Recommendations include conducting production trials with larger container sizes and adjusting the recycled material percentage, as well as exploring performance-enhancing additives for recycled plastics. Industries are advised to align with regulations by adopting best recycling practices and establishing robust compliance processes. Strengthening Extended Producer Responsibility (EPR) schemes and supporting advanced recycling infrastructure development are critical steps. These measures will improve the efficiency and effectiveness of recycling programs, ensuring regulatory compliance and promoting sustainable waste management. The study concludes that recycling pesticide plastic packaging is feasible and beneficial, provided that technical and economic challenges are effectively addressed with at least 40% recycled material content. The economic viability of recycling pesticide plastic containers will be further enhanced if the Indonesian government reclassifies the waste containers as non-hazardous, after triple rinsing process, thereby reducing transportation costs.

Enhanced La(III) adsorption performance and mechanism of urea-modified dolomite composite adsorbent

Dolomite, a prevalent mineral in rock formations, often coexists with various minerals, impacting their properties and typically being discarded as waste in the extraction process of other minerals. This research introduces a straightforward and effective technique for co-calcining urea with natural dolomite at 550℃, yielding a novel composite adsorbent designated as CN/xDO, where ‘x’ denotes the proportion of dolomite incorporated. During the preparation, urea promotes the conversion of dolomite to nano calcite, and the gas produced by urea pyrolysis during the calcination process has a cavitation effect on the material, enhancing its surface properties. BET analysis reveals that the specific surface area and total pore volume of CN/xDO notably surpass those of pure dolomite, with CN/0.6DO achieving 2.9479 m2/g and 0.0382 cm3/g, respectively. CN/0.6DO demonstrates an adsorption capacity of 237.91 mg/g for La(III) within 360 min at 298 K, which is 16.9 times greater than that of untreated dolomite (14.05 mg/g). The maximum adsorption capacity of CN/0.6DO for La(III) (C0 = 500 mg/L) reaches 382.94 mg/g at 308 K, exceeding the majority of adsorbents documented in the literature. The comparative analysis of batch adsorption experiments and material characterization before and after the adsorption process reveals that the mechanisms adsorption of La(III) adsorption by CN/xDO include physical adsorption, cation-π interactions, ion exchange, and complexation with oxygen-containing functional groups, especially −OH, CO32-. This study broadens the application of dolomite in adsorption and introduces a new strategy for the efficient recovery of rare earth elements from wastewater, consistent with the principles of sustainable development.

Education of Waste Cooking Oil Processing into Aromatherapy Candles for 2 Junior High School Karanganyar Students

Waste is a complex problem and an important challenge for the sustainable development of a circular economy and can have social, environmental and economic impacts. This service aims to provide education to students so that students can have high knowledge and awareness of waste processing and can utilize used cooking oil waste to make aromatherapy candles. This service was carried out at 2 Junior High School Karanganyar on Thursday, June 20 2024. The service method was socialization and direct practice in making aromatherapy candles. Students have the skills and are successful in making aromatherapy candles according to the material presented by the speaker. This activity succeeded in increasing students' awareness and knowledge regarding household waste management. Students showed high enthusiasm in following the process of processing used cooking oil waste into useful products such as aromatherapy candles, while also expressing their creativity in this process. Positive support from teachers also contributed to the successful implementation of this waste treatment.

Pyxis Proximity Improves Narcotic Waste Compliance Among Anesthesia Personnel.

Introduction Controlled substance waste processes in perioperative areas can be cumbersome. Streamlining this process is a critical component of improving operating room efficiency. At our institution, unused controlled substances require a two-person waste prior to disposal. We hypothesized that access to a centrally located automated medication dispensing system to conduct medication waste would decrease the amount of time required to perform a two-person waste and dispose of unused medications after the completion of a case. We further hypothesized that a decrease in the time required to waste would improve user satisfaction with the waste process. Methods This was a single-center, retrospective, IRB-approved quality assurance analysis. Research Electronic Data Capture (REDCap, Stony Brook, NY, United States) software was used to design an anonymous survey, which was distributed via email from 06/09/2021 to 09/09/2021. Wilcoxon signed-rank tests were used to compare before and after paired responses for individuals. Analyses were performed using SAS 9.4 © (Cary, NC, United States) software. Results Participants reported a significant decrease in time carrying used narcotics after a surgical case. For the primary outcome, median (IQR) scores demonstrated a significant decrease from 2, representing "10-20 minutes" (IQR 1-3), to 1, indicating "<10 minutes" (IQR 1-2) spent carrying used narcotics (p < 0.0001). Reported satisfaction with the process significantly increased from 2 to 3 points, on a scale of 5, after using the new centrally located Pyxis (p < 0.0001). Participants reported the wasting process as less time-consuming, carried fewer used controlled substances, and were less likely to wait until the end of the shift to waste. Conclusions By improving the ergonomics of the waste process after adding a Pyxis system in a more central location, the time anesthesia clinicians spent carrying used controlled substances decreased. Additionally, provider satisfaction increased, likely related to the ease of finding a partner to witness wasted medications.

Flux Calculation for Primary Metabolism Reveals Changes in Allocation of Nitrogen to Different Amino Acid Families When Photorespiratory Activity Changes.

Photorespiration, caused by oxygenation of the enzyme Rubisco, is considered a wasteful process, because it reduces photosynthetic carbon gain, but it also supplies amino acids and is involved in amelioration of stress. Here, we show that a sudden increase in photorespiratory activity not only reduced carbon acquisition and production of sugars and starch, but also affected diurnal dynamics of amino acids not obviously involved in the process. Flux calculations based on diurnal metabolite profiles suggest that export of proline from leaves increases, while aspartate family members accumulate. An immense increase is observed for turnover in the cyclic reaction of glutamine synthetase/glutamine-oxoglutarate aminotransferase (GS/GOGAT), probably because of increased production of ammonium in photorespiration. The hpr1-1 mutant, defective in peroxisomal hydroxypyruvate reductase, shows substantial alterations in flux, leading to a shift from the oxoglutarate to the aspartate family of amino acids. This is coupled to a massive export of asparagine, which may serve in exchange for serine between shoot and root.

Study on the mechanism of copper and arsenic separation in copper smelting acidic solution by arsenic sulfide residue

A large amount of acidic solution containing arsenic and copper is produced in the hydrometallurgical treatment process of arsenic-containing solid waste in copper smelting. It is necessary to develop an economical and efficient separation technology of arsenic and copper from the solution. In this paper, according to the difference of solubility product between As2S3 and CuS, arsenic sulfide residue (ASR) was used as copper precipitant to realize the efficient separation of copper and arsenic in acidic solution, so as to achieve the purpose of “treating waste with waste”. It is found that the copper precipitation reaction is a more sensitive reaction. With the increase of temperature and time, the precipitation efficiency of copper first increases and then decreases, mainly because CuS will react with AsO43- in the solution, and then re-dissolution occurs. With the increase of pH value, As and Fe precipitate, resulting in incomplete separation of Cu and As. Under the optimum conditions, the precipitation efficiencies of Cu, Sb, Cd, Fe and Zn reached 97.39 %, 46.31 %, 2.04 %, 2.59 % and 0.65 %, respectively. The content of Cu in the precipitated residue reaches 50.47 wt%. The precipitated residue can be used as raw material for copper smelting.

Biotechnological Processing of Organic and Domestic Waste and the Effect of Obtained Vermicompost on Soil Fertility

Biotechnological Processing of Organic and Domestic Waste and the Effect of Obtained Vermicompost on Soil Fertility

Development of Simplified Treatment Methods for Removal of Ra-226 and Ra-228 from Sludge Waste Produced in Natural Gas Processing Plants

The present study aims to establish a new treatment method for removing or reducing the concentration of 226Ra and 228Ra in sludge waste produced due to natural gas production at natural gas processing Plants. The main radionuclides present in sludge waste of natural gas processing are Radium and its daughters due to their low solubility in the water they can form compounds with sulfate ions, carbonate ions, silicate ions, then precipitation scale or sludge. The suggested method is designed to be simple, applicable, economically beneficial, and environmentally safe, by using internal available resources like emitted hydrogen sulfide and sodium hydroxide, also reduction of chemicals that used in radioactivity treatment to be sulfuric acid or sodium hydroxide instead of multiple different chemicals that used in other treatment procedures. The effects of the used chemical reagents sulfuric acid and sodium hydroxide in various concentrations at different reaction temperatures on the sludge waste to extract the radium isotopes have been studied, evaluated, and compared. The study proved that removing radium isotopes is increased by elevating the reagents concentration and sludge temperature. The removal effects of the used reagents are approximately similar.

Evaluation of solid medical waste management system in Undata Regional General Hospital, Palu city, Central Sulawesi Province, Indonesia

Waste is an environmental problem that is still not fully resolved properly even though the resulting impact has a major effect on environmental pollution, especially solid medical waste. The purpose of this study was to assess the characteristics of solid medical waste at Undata Hospital based on its sources and types, calculate the average weight of solid medical waste generated per day, and evaluate the solid medical waste management system with sorting, packaging, collection and transportation modes in accordance with the criteria of Permen of Environment and Forestry Number 56 of 2015 and Permenkes Number 2 of 2023. This research uses a qualitative approach with a descriptive research type. This research was conducted in August-September 2023. The sampling technique in this study used Purposive Sampling, with 18 informants selected from each unit/room/installation at Undata Hospital, Palu City. Based on the results of the study, it was found that every day Undata Palu Hospital produces domestic waste as much as ± 270 kg / day. The results of the evaluation of the solid medical waste management system at Undata Palu Hospital show that basically it is quite effective but not optimal, because the storage process shows non-compliance with the guidelines for medical waste management by the Ministry of Health Number 2 of 2023, namely storage in TPS which should not be more than 2x24 hours, but in fact the accumulation of solid medical waste is stored for 1 month in the LB3 TPS due to delays in transportation by third parties. This causes a large amount of solid waste in the TPS so that the TPS becomes full and dangerous because the waste undergoes a process of decomposition and decay, which is harmful to the environment and human health. Undata Hospital needs to maximize the procurement of internal medical waste processing equipment (incineration equipment) which needs to be supported by the Environmental Agency and the relevant Health Office to prevent environmental pollution from medical activities.

Sustainable innovation: Economic valuation of wood waste for sustainable development at PT Wapoga Mutiara Industries

Background: This study describes the economic valuation of wood waste at PT Wapoga Mutiara Industries using the Market Price Approach to calculate the Total Economic Value (TEV) derived from utilising production waste. This research uses qualitative methods to explore how processed wood waste contributes economically to the company and the local community. Wood waste in industrial processes is often an underutilised asset. However, at PT Wapoga Mutiara Industries, innovative practices have turned this by-product into a significant economic opportunity. Method: This research investigated the direct use value of wood waste - mainly wood chips and sawdust - converted into local charcoal products, a resource increasingly recognized for its environmental and economic benefits. The research assessed the monthly economic impact of these waste products, measuring their market value to quantify the total benefits accruing to the local economy. Findings: The findings from this study are considerable, showing that wood chips alone contribute IDR 42,300,000 to the economy each month. Sawdust was processed in the same way, adding IDR 72,860,000 per month. Combined, these waste materials contribute a total direct use value of IDR 166,160,000 per month to the local economy, which on average provides a potential income of IDR 1,350,700 per person per month, suggesting there is significant economic potential from sustainable wood waste management practices. Conclusion: In addition, the study provides insight into the broader implications of such valuation practices, demonstrating that with the right innovations, what is often considered industrial waste can be re-evaluated as a viable economic resource. This aligns with the global shift towards more sustainable industrial processes, where waste minimisation and reuse contribute to environmental sustainability, economic resilience, and community well-being. Novelty/Originality of this study: This study presents a comprehensive analysis of the economic valuation of wood waste in the processing industry, demonstrating the significant potential of innovative waste management practices. This research opens up new perspectives on how industrial 'waste' can be transformed into valuable economic resources, supporting environmental sustainability and the well-being of local communities.

Waste management 2.0 leveraging internet of things for an efficient and eco-friendly smart city solution.

Waste management poses a major challenge for cities worldwide, with significant environmental, economic, and social impacts. This paper proposes a novel waste management system leveraging recent advances in the Internet of Things (IoT), algorithms, and cloud analytics to enable more efficient, sustainable, and eco-friendly waste collection and processing in smart cities. An ultrasonic sensor prototype is tailored for reliable fill-level monitoring. A LoRaWAN and cellular network architecture provides city-wide connectivity. A cloud platform handles sensor data storage, processing, and analytics. Dynamic route optimization algorithms minimize time, distance, and fuel use based on real-time bin data. Extensive pilot studies in 10 different locations across Lahore, Pakistan, validated the system, processing over 200 million data points. The results showed a 32% improvement in route efficiency, a 29% decrease in fuel consumption and emissions, a 33% increase in waste processing throughput, and 18% vehicle maintenance savings versus conventional practices. This demonstrates quantifiable benefits across operational, economic, and sustainability dimensions. The proposed IoT-enabled waste management system represents a significant advancement towards sustainable and ecologically responsible waste practices in smart cities worldwide. This research provides a replicable model for holistic smart city solutions integrating sensing, algorithms, and analytics to transition civic operations towards data-driven, efficient paradigms. It represents a significant advancement in sustainable waste practices for smart cities worldwide. Further work could apply emerging technologies like automation and artificial intelligence to create waste management 3.0.

Exploring citizens’ cluster attitudes and importance-performance policy for adopting sustainable waste management practices

This study aims to bridge the gap between governmental policymaking and citizens’ environmental attitudes by providing scientific advice to governments on how to encourage community engagement in sustainable waste management (SWM) programs. It seeks to integrate citizens’ class preferences, based on their environmental awareness, into SWM programs. The study employs comprehensive data analysis, including factor identification based on class attitudes, preference determination through environmental awareness, importance-performance analysis, and probit and logit models. Through this analysis, the study identifies the nexus between societal attitudes and environmental concerns as crucial for the success of SWM in metropolitan cities. The research consists of several stages of data analysis, such as identifying factors and classes based on citizen attitudes, analyzing preferences through an importance-performance analysis of SWM programs, and creating models using probit and logit methods. The analysis reveals two critical factors for the success of SWM in metropolitan cities: societal attitudes and environmental concerns. From the analysis, two distinct societal classes emerge: proactive ’Sustainable Supporters’ and more passive ’Indifferent Citizens’. The policy implications derived from the study suggest that while ’Sustainable Supporters’ can be further mobilized through an advanced SWM platform that emphasizes awareness, collection optimization, and waste processing, the ’Indifferent Citizens’ require strategies focused on bolstering digital SWM programs that simplify waste disposal and recycling. To encourage broader participation and ensure the effectiveness of SWM, governments and relevant organizations are advised to raise public awareness of SWM, improve infrastructural and technological capabilities in waste management, and formulate policies that unequivocally support SWM.

Investigating the Operational Feasibility of Waste Management at Integrated Waste Management Sites in Balikpapan City

Referring to the Balikpapan City Medium-Term Development Plan for 2021-2026, the percentage of waste transported to the Final Waste Processing Site (FWPS) is 75.45%, which is higher than the percentage of waste management. As of now, there are 2 Integrated Waste Management Sites (IWMS) in Balikpapan, namely MRF and ITF. Based on data from 2019, waste management at MRF decreased by 51.14%. Meanwhile, ITF only utilizes 25.98% - 31.31% of total incoming waste, with the remainder being sent to Manggar FWPS. This decline in performance is also related to the deteriorating condition of approximately 62% of waste management infrastructure in Balikpapan, so evaluation of the operational aspects of waste management becomes a crucial factor in addressing this issue. In addition, the ideal condition of waste management according to standards serves as the main indicator in assessing the performance of waste management. This research aims to evaluate operational aspects of waste management at Balikpapan IWMS by applicable regulations. Analysis methods used are mass balance analysis and operational performance analysis. Research findings show that waste management at IWMS Balikpapan City can reduce the volume of waste in Balikpapan City. However, the operational performance of MRF did not meet established standards, especially in terms of waste removal and processing systems, with a score of 19. On the other hand, ITF is considered sufficient by provisions of PUPR Minister Regulation Number 03 of 2013 and Indonesian National Standard 19-2454-2002 with a score of 23.

The Organic Waste Processing as an Alternative Energy Source of Bio- Briquettes For Kedung Klinter Citizen Surabaya

The Organic Waste Processing as an Alternative Energy Source of Bio- Briquettes For Kedung Klinter Citizen Surabaya

Strategy for developing the utilization of organic waste as an alternative source of electricity in Indonesia

Background: Indonesia has pledged to reach its Net Zero Emission target by 2060, necessitating the shift to renewable energy sources. To achieve this, Indonesia must transition from its current reliance on fossil fuel power plants to renewable energy generators, ensuring the same or greater electricity capacity. One viable renewable energy source is organic waste. This study aims to explore strategies for developing organic waste as an alternative energy source to bolster Indonesia's energy resilience and environmental sustainability. Method: The research employs a qualitative approach, including literature reviews and qualitative descriptive analysis. Result: Waste to Energy (WtE) processes convert waste into electricity and/or heat, aiding in greenhouse gas reduction, improving waste management efficiency, and supporting sustainable development. WtE technologies can utilize both thermochemical and biochemical methods to convert waste into energy. The Indonesian government is known to have 12 projects to accelerate the installation of Waste Processing into Electrical Energy, both the Waste Power Plants that have been in operation and under construction and using gasification as the method. The development of WtE faces various challenges ranging from completeness and consistency of regulations, high tipping fees, complex cooperation mechanisms and business models, problems with the characteristics and nature of Indonesian waste that need special handling, and rejection from residents. Conclusion: Strategies that can be implemented in developing WtE in Indonesia include drafting policies and regulations, increasing public awareness, collaboration with the private sector, choosing the right technology, developing infrastructure, increasing the efficiency of waste collection, and international partnerships. Novelty/Originality of this study: This research offers concrete strategies to develop Waste to Energy (WtE) technology in Indonesia, including policy formulation, increasing public awareness, and collaboration with the private sector to utilize organic waste as a renewable energy source to support the 2060 Net Zero Emission target.

Analysis of waste generation characteristics as a reference for TPS 3R planning in community-based waste management efforts in Pandansari Lor Village, Malang Regency

Background: Waste management is a critical issue in Indonesia, particularly in rural areas like Pandansari Lor Village in Malang Regency. Improper waste disposal practices, such as open burning and dumping in rivers, pose environmental and health hazards. This study aims to analyze the waste generation characteristics in Pandansari Lor Village as a baseline for planning a community-based Reduce, Reuse, Recycle (3R) waste processing site (TPS 3R). Method: A waste sampling method was conducted following the SNI 19-3964-1994 guidelines to measure the waste generation rate, density, and composition. Findings: The results showed that the average waste generation rate in Pandansari Lor Village was 0.16 kg/person/day or 778.72 kg/day for the total population, with a waste density of 74.02 kg/m³. The waste composition was dominated by organic waste (62.26%), followed by plastic (26.74%), paper (5.89%), and other components. These findings suggest the need for a 3R-based waste management system that involves community participation. Conclusion: The TPS 3R facility should be designed to handle the projected waste generation for the next 10 years, with a capacity of 15,438 L/day. Proper waste segregation, composting of organic waste, and recycling of plastic and other recyclable materials are recommended. This study provides valuable insights for developing a sustainable and effective waste management strategy in rural areas, considering the specific waste characteristics and community involvement. Novelty/Originality of this article: This study proposes a 3R TPS model adapted to rural waste, focusing on organic waste composting and plastic recycling. This model is designed to increase community participation in waste management through community-based education and empowerment.

Waste Plastic Pyrolysis Industry: Current Status and Prospects

Pyrolysis is a technology that can produce pyrolysis oil by decomposing waste plastic, and has the advantage of being able to process contaminated waste plastic that is impossible to process with other technologies. In Korea, where the amount of waste plastic is increasing and natural resources such as fossil fuels are lacking, pyrolysis technology is attracting attention under the keyword ‘urban oil field’. The Ministry of Environment of the Republic of Korea announced a ‘plan to revitalize waste plastic pyrolysis’ to increase the proportion of waste plastic pyrolysis treatment from 0.1% in 2021 to 10% in 2030. The products of pyrolysis are both fuel and plastic raw materials, but the processing consumes significant energy. Therefore, as criticism continues that the marketability and economic feasibility of pyrolysis technology is poor, questions are being raised about its environmental friendliness. Against this background, this study investigated international trends in pyrolysis technology and performed a detailed comparative analysis with other technologies from an environmental perspective. According to the results of this study, currently environmentally advanced countries are very negative about using pyrolysis oil as fuel, and the following policy directions are suggested. 1) In order to comply with the mandatory use ratio of plastic recycled raw materials and at the same time achieve eco-friendliness, it is recommended to use pyrolysis technology as a plastic recycled raw material production technology rather than fuel conversion. 2) Since pyrolysis emits more greenhouse gases than physical recycling, pyrolysis technology is used as a complementary method to physical recycling to process waste plastics that are difficult to physically recycle. 3) Since physical recycling is very important in the resource circulation of waste plastic, the development of separation and sorting technology is promoted nationally.