Corrigendum to “Steam gasification of polyethylene terephthalate (PET) with CaO in a bubbling fluidized bed gasifier for enriching H₂ in syngas with Response Surface Methodology (RSM)” [APEN 348 (2023) 121536] (Applied Energy (2023) 348, (S0306261923009005), (10.1016/j.apenergy.2023.121536))

The authors regret to inform the readers that there was a typo in Eq. (9). The coefficient of the term T² should be −0.000253 instead of −0.0025. Therefore, the correct Eq. 9 should be: [Formula presented] Correspondingly, the contour of CO yield in Fig. 6 (A) based on Eq. (9) should also be replotted.[Formula presented] Other results and conclusions would not be affected by this corrigendum. For example, the validation in Table 6 was conducted with the correct coefficient. The authors would like to apologize for any inconvenience caused.