CO ₂ ‐Assisted Catalytic Co‐Pyrolysis of Sewage Sludge and Mixed Plastics in a Fluidized Bed Reactor

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The research aims to optimize the co-pyrolysis process of sewage sludge and plastics for enhanced energy product yield.
Conducted co-pyrolysis of sewage sludge with polyethylene and polypropylene in a fluidized bed reactor.
Utilized thermogravimetric analysis to assess thermal behavior under different gas atmospheres.
Applied an HZSM-5 catalyst and tested various blending ratios and temperatures for optimization.
Achieved maximum pyrolysis oil yield of 18.01% under optimized conditions.
Reduced activation energy significantly with increased plastic content.
Optimized conditions resulted in 5.7% aviation fuel yield with 26.46% of hydrocarbons in the aviation-fuel range.

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Investigates catalytic co-pyrolysis of sewage sludge and mixed plastics, indicating increased energy efficiency and product yield.

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Chen et al. (2026) studied this question.

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