Does recycling plastic actually work?

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1. 1

   A systematic review of plastic recycling: technology, environmental impact and economic evaluation

   Waste Management & Research The Journal for a Sustainable Circular Economy (Jiang & Bateer)Published Jan 18, 2025Checked Oct 3, 2026

   “The comparisons also reveal the challenges associated with these methods: mechanical recycling often encounters economic barriers due to contamination and inefficiencies in sorting and cleaning processes; thermolysis is constrained by high energy demands and operational costs, whereas chemical and biological recycling faces limitations related to scalability and material costs. Additionally, current challenges, emerging research areas and future directions in plastic recycling are discussed. For example, the role of innovative techniques, such as artificial intelligence, in refining recycling processes is emphasized. The importance of incorporating circular economy principles in the integrated sustainable analysis of recycling processes is also highlighted. The innovative contribution of this review is to address both technological developments and their environmental and economic implications. The focus is placed on literature from the past 10 years to ensure coverage of the most recent advancements. Overall, the insights of this review article aim to guide researchers, policymakers and industry stakeholders in improving sustainable management practices for plastic waste.”

2. 2

   Life cycle environmental impacts of chemical recycling via pyrolysis of mixed plastic waste in comparison with mechanical recycling and energy recovery

   The Science of The Total Environment (Jeswani et al.)Published Jan 7, 2021Checked Oct 3, 2026

   “Three LCA studies have been carried out under three perspectives: waste, product and a combination of the two. To ensure robust comparisons, the impacts have been estimated using two impact assessment methods: Environmental footprint and ReCiPe. The results suggest that chemical recycling via pyrolysis has a 50% lower climate change impact and life cycle energy use than the energy recovery option. The climate change impact and energy use of pyrolysis and mechanical recycling of MPW are similar if the quality of the recyclate is taken into account. Furthermore, MPW recycled by pyrolysis has a significantly lower climate change impact (−0.45 vs 1.89 t CO2 eq./t plastic) than the equivalent made from virgin fossil resources. However, pyrolysis has significantly higher other impacts than mechanical recycling, energy recovery and production of virgin plastics. Sensitivity analyses show that some assumptions have notable effects on the results, including the assumed geographical region and its energy mix, carbon conversion efficiency of pyrolysis and recyclate quality. These results will be of interest to the chemical, plastics and waste industries, as well as to policy makers.”

3. 3

   Comparative life cycle assessment of plastic waste management technologies: Environmental performance of pyrolysis, mechanical recycling, chemical recycling and open burning.

   The Science of the total environment (Shrestha et al.)Published Aug 7, 2026Checked Oct 3, 2026

   “Open burning, still common in informal systems, generated catastrophic emissions exceeding 3.2 million kg CO₂ eq per ton, approximately 230-340 times higher than engineered alternatives. For the engineered treatment pathways, transportation was the dominant contributor to total GWP (60-73%), suggesting that infrastructure decentralization and improved collection logistics may deliver larger benefits than process-level efficiency improvements. Monte Carlo uncertainty analysis confirmed robust comparative rankings, with coefficients of variation below 15% for all scenarios. These findings support integrated waste management strategies that combine mechanical and chemical recycling based on feedstock quality, and inform policy priorities for regions transitioning from informal to formal waste management. The framework provides a transferable method for context-specific assessment of plastic waste treatment options.”

4. 4

   Drivers of and barriers to consumers’ plastic packaging waste avoidance and recycling – A systematic literature review

   Waste Management (Jacobsen et al.)Published Jan 29, 2022Checked Oct 3, 2026

   “Focus is specifically on economically developed countries because they are responsible for the biggest share of plastic packaging waste and have implemented the most advanced and ambiguous legislation and regulation for plastic packaging waste prevention and recycling. Based on a search in Scopus, 36 peer-reviewed articles were identified that empirically address what motivates consumers to engage in these activities and what difficulties and hindrances they experience for doing so in an effective way. According to this research, the most important drivers of consumers' plastic packaging waste avoidance and recycling are environmental concern and task-specific benefits, and the most important barriers are lack of knowledge and understanding as well as lack of opportunities, inconvenience, and task difficulty. Moreover, there is some evidence that plastic packaging waste avoidance and recycling behaviours are interlinked, contingent on shared motives and understanding, which calls for an integrated approach considering potential positive and negative spill-over between plastic packaging waste behaviours.”

5. 5

   The Key to Solving Plastic Packaging Wastes: Design for Recycling and Recycling Technology

   Polymers (Ding & Zhu)Published Mar 16, 2023Checked Oct 3, 2026

   “In addition to the recycling of plastic wastes, design for recycling can effectively prevent plastic packaging from turning into solid waste at the source. The reasons are that the design for recycling can extend the life cycle of plastic packaging and increase the recycling values of plastic waste; moreover, recycling technologies are helpful for improving the properties of recycled plastics and expanding the application market for recycled materials. This review systematically discussed the present theory, practice, strategies, and methods of design for recycling plastic packaging and extracted valuable advanced design ideas and successful cases. Furthermore, the development status of automatic sorting methods, mechanical recycling of individual and mixed plastic waste, as well as chemical recycling of thermoplastic and thermosetting plastic waste, were comprehensively summarized. The combination of the front-end design for recycling and the back-end recycling technologies can accelerate the transformation of the plastic packaging industry from an unsustainable model to an economic cycle model and then achieve the unity of economic, ecological, and social benefits.”

6. 6

   Plastic recycling in additive manufacturing: A systematic literature review and opportunities for the circular economy

   Journal of Cleaner Production (Sanchez et al.)Published Apr 15, 2020Checked Oct 3, 2026

   “This paper aims to examine the current advances on thermoplastic recycling processes via additive manufacturing technologies. After proposing a closed recycling global chain for DRAM, a systematic literature review including 92 papers from 2009 to 2019 was performed using the scopus, web of science and springer databases. This work examines main topics from six stages (recovery, preparation, compounding, feedstock, printing, quality) of the proposed DRAM chain. The results suggested that few works have been done for the recovery and preparation stages, while a great progress has already been done for the other stages in order to validate the technical feasibility, environmental impact, and economic viability. Potential research paths in the pre-treatment of recycled material at local level and printing chain phases were identified in order to connect the development of DRAM with the circular economy ambition at micro, meso and macro level. The development of each stage proposed using the open source approach is a relevant path to scale DRAM to reach the full technical potential as a centerpiece of the circular economy.”

7. 7

   Recycling of Flexible Plastic Films: Emergent Technologies.

   Polymers (Licht et al.)Published Aug 21, 2026Checked Oct 4, 2026

   “This has motivated the development of new recycling technologies designed around plastic films. Better characterization technologies to identify film compositions in municipal waste streams have been key to sorting out film feedstock for mechanical recycling and the baling of flexible plastic waste, but they struggle with multilayer films and black plastic. Compatibilization enables the recycling of mixed plastic waste but requires polymer compositions for selecting specific compatibilizers. Dissolution-precipitation recovers individual types of polymers from multilayer films and, at the same time, can purify polymers from additives or contaminants, but requires intense solvent processing and associated energy. Delamination of multilayer films can separate and recover solid films of polyolefins at relatively low amounts of solvent but requires quality feedstock to be efficient. Both dissolution-precipitation and delamination recycling of films recover the original polymer molecules and maintain their embodied energy, hence support circularity. In the case of PET-containing films, depolymerization to recover PET monomers offers opportunities to recycle challenging film feedstock.”

8. 8

   Environmental performance of waste electrical and electronic equipment plastic recycling based on life cycle assessment.

   Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA (NajiPublished Jun 3, 2026Checked Oct 4, 2026

   “However, recycling plastics from WEEE is a challenging task due to the complexity of the waste composition, which consists of several polymers, many of which contain heavy metals, additives, and brominated flame retardants. This study presents both technical and environmental concerns in the resource recovery of WEEE plastics. Based on results of a prior research on the composition of waste electrical and electronic plastics (WEEP) in Finland, this study assess the environmental impacts associated with the recovery of WEEP by comparing four technically available WEEP treatment methods: energy recovery (incineration), mechanical recycling of composite plastics, mechanical recycling for separated polymers, and chemical recycling by pyrolysis. This study concludes that mechanical recycling with plastic separation has the best environmental performance among the presented scenarios for all selected impact categories except for the acidification potential impact category. The substitution ratio of virgin plastics and the efficiency of the pyrolysis process were the primary factors contributing to the environmental impacts of WEEP treatment options.”

9. 9

   Is recycling sustainable: The promise and risks of scrap tire valorization.

   iScience (Vahdatbin et al.)Published Sep 5, 2026Checked Oct 4, 2026

   “Approximately 1.5 billion end-of-life tires accumulate globally each year, presenting major environmental and human health challenges. Although recycling pathways such as devulcanization, pyrolysis, and mechanical grinding are promoted to conserve resources, their real-world sustainability is limited by technical, economic, and environmental constraints. These recycling processes can release hazardous pollutants, including volatile organic compounds, polycyclic aromatic hydrocarbons, heavy metals, microplastics, and 6PPD-quinone, posing long-term ecological and toxicological risks. Integrating technical, regulatory, and toxicological perspectives, this review evaluates the risks and benefits of current tire management strategies. It uncovers overlooked downstream impacts and calls for advanced recycling technologies, high-fidelity monitoring systems, and strengthened regulations to enhance the overall sustainability of tire recycling practices.”

10. 10

    Environmental evaluation of plastic waste end-of-life pathways in Malang District, Indonesia: a life cycle approach.

    The international journal of life cycle assessment (Stepanchuk et al.)Published Sep 29, 2026Checked Oct 4, 2026

    “Villages with the highest recycling rates however present lower GWP100 and FFP, such as the case of Bedali and Mangunrejo, where 16.6% and 14.3% of plastic is recycled, respectively. Low PMFP is tied to options such as landfilling, which occurred in Rekasan. The alternative intervention strategy with the lowest environmental impact is recycling (when considering avoided plastic production, GWP100 and FFP are negative). However, it is the alternative with the highest PMFP, even surpassing the baseline scenario.ConclusionOpen burning remains one of the most prevalent PW management strategies in Malang, which is not only detrimental to the environment but also proven to negatively impact human health, particularly respiratory health. It is essential not only to increase waste collection and treatment rates, but also to ensure that waste‑management practices meet environmental standards and minimise adverse impacts on human health and the environment.Supplementary informationThe online version contains supplementary material available at https://doi.org/10.1007/s11367-026-02751-9.”