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- W4224134041 abstract "The scientific community has believed the potential of waste PET plastics as an effective carbon precursor, however, developing PET-derived activated carbons (PETACs) for a specific application is still a challenge we are facing. To overcome the limitation, a whole chain from development method screening to experiments design, finally to sample optimization, for a sample with promising performance, is proposed in this work. By employing PETACs as CO2 adsorbents, the waste PET plastics, which we believed the diamond in the rough, have been polished successfully. Therewith the problems of plastic pollution and the greenhouse effect could be simultaneously solved. The first half part of this paper is a mini review: the PETACs development methods were reviewed and the most suitable solution to develop CO2 adsorbent, i.e., the two-step chemical activation method, was selected. In addition to that, the necessary procedure variables and their value range were determined. In the second half part, the central composite design method was applied for experiments design in which the procedure variables obtained were regarded as the independent indicators (factors here) while the performance indicators, including yield, CO2 adsorption uptake, and CO2 over N2 selectivity, were treated as the dependent indicators (responses here). The responses were obtained through the characterization of the samples developed and statistical analysis could be applied to reveal the relations between the factors and responses. A high-value PETAC, P600K600-1.5, with the highest gas selectivity (22.189) and decent CO2 adsorption uptake (3.933 mmol/g) was successfully designed." @default.
- W4224134041 created "2022-04-20" @default.
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- W4224134041 date "2022-08-01" @default.
- W4224134041 modified "2023-10-18" @default.
- W4224134041 title "Diamond in the rough: Polishing waste polyethylene terephthalate into activated carbon for CO2 capture" @default.
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- W4224134041 doi "https://doi.org/10.1016/j.scitotenv.2022.155262" @default.
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