ArticleACS omega2025
Catalytic Pyrolysis Oil from Landfilled Plastics through Ni/HZSM-5 and Co/HZSM-5 Catalysts.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plastic waste poses a significant environmental challenge. To address this issue, the pyrolysis process offers a promising solution to convert plastic waste into valuable products. This study investigated the pyrolysis of plastic waste sourced from a Hat Yai municipal landfill, aiming to optimize process conditions and characterize the resulting products. The plastic waste was classified into three primary types: polyethylene terephthalate (PET) (7 wt %), polypropylene (PP) (23 wt %), and polyethylene (PE) (70 wt %). Thermogravimetric analysis (TGA) revealed that the waste decomposed completely within the temperature range of 520-600 °C. To optimize pyrolysis conditions, experiments were conducted on both unwashed and water-washed plastic waste, varying particle size, catalyst type, and loading. Nickel- and cobalt-based zeolite catalysts (Ni/HZSM-5 and Co/HZSM-5) were employed to enhance the pyrolysis process. The results indicated that medium-sized, water-washed plastic waste, pyrolyzed at 560 °C with 5 wt % of 5 wt % Co/HZSM-5 catalyst, yielded the highest pyrolysis oil (47.42 ± 1.00 wt %) and a high heating value (HHV) of 38.06 ± 0.67 MJ/kg. To further optimize the process, central composite design (CCD) and response surface methodology (RSM) were utilized to investigate the effects of the temperature and catalyst loading on the pyrolysis oil yield and HHV. Optimal conditions were determined for both unwashed and washed plastic waste. Gas chromatography-mass spectrometry (GC-MS) analysis of the pyrolysis oil from both optimum conditions revealed a high proportion of hydrocarbon compounds similar to fossil fuels, including gasoline, jet fuel, and diesel. This study successfully optimized the catalytic pyrolysis of plastic waste, resulting in significant improvement in oil yield and product quality. The use of water-washed plastic waste and 5% Co/HZSM-5 catalyst proved to be effective in enhancing the pyrolysis process. These findings provide valuable insights into the sustainable management of plastic waste and the production of valuable resources.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.