AI Article Synopsis
- The study examined the pyrolysis behavior and kinetics of four types of organic hazardous wastes: oil sludge (OS), paint sludge (PS), waste print circuit boards (WPCBs), and penicillin fermentation residue (PFR).
- Researchers used techniques like thermogravimetry and derivative thermogravimetry, along with Gaussian fitting and the Flynn-Wall-Ozawa method, to analyze the decomposition processes.
- Findings revealed that OS pyrolyzed at higher temperatures (550-900 °C), while the other wastes pyrolyzed at lower temperatures (150-550 °C); co-pyrolysis of PS/PFR showed the best results, indicating beneficial interactions in the blends, especially between OS with PS and P
Article Abstract
Here, the pyrolysis decomposition behavior and kinetics of four kinds of organic hazardous wastes (OHWs) and their blends were investigated. The four types of OHWs are oil sludge (OS), paint sludge (PS), waste print circuit boards (WPCBs), and penicillin fermentation residue (PFR). A combination of thermogravimetry (TG) and derivative thermogravimetry (DTG) analysis was employed with Gaussian multi-peak fitting and Flynn-Wall-Ozawa (FWO) method. The results showed that OS was mainly pyrolyzed at 550-900 °C while PS, WPCBs, and PFR were mainly pyrolyzed at 150-550 °C. During co-pyrolysis, the PS/PFR exhibited the best pyrolysis performance among all the blends due to the high volatiles content in PS and PFR. The interaction analysis revealed that OS/PS exhibited the lowest coefficient of residue percentage compared to other blending samples, with OS/PFR following behind. This observation indicates a synergistic promotional effect between OS and PS, as well as between OS and PFR, during the co-pyrolysis process. Gaussian fitting showed that the carbonate decomposition peak of OS shifted towards lower temperatures during its co-pyrolysis with PS and PFR.
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| http://dx.doi.org/10.1016/j.jenvman.2024.122854 | DOI Listing |
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