Role of acidic hydrochar on dechlorination of waste PVC in high temperature hydrothermal treatment and fuel properties enhancement of solid residues

Ghalandari, Vahab; Volpe, Maurizio; Luz, Fábio Codignole; Messineo, Antonio; Reza, M. Toufiq

doi:10.1016/j.wasman.2023.07.005

Cited by 9 publications

(1 citation statement)

References 63 publications

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“…Also, the aqueous phase sample was diluted with DDW (100,000×) and was injected to the IC to determine the chloride content in aqueous phase. Equation () was used to calculate DE, where

C_{1}

and

C_{2}

represent the chlorine mass of the feedstock (WPVC) and solid residue (in a dry mass basis), respectively 30

DE (%) = \frac{C_{1} - C_{2}}{C_{1}} \times 100 % .

…”

Section: Methodsmentioning

confidence: 99%

Elucidating dechlorination of waste polyvinyl chloride under high‐temperature catalytic hydrothermal treatment

Ghalandari,

Scannell,

Reza

2023

AIChE Journal

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This study focused on evaluating the reduction of chlorine content in waste polyvinyl chloride (WPVC) through high‐temperature catalytic hydrothermal treatment (HTT). Catalytic HTT experiments were carried out to evaluate the effect of noble metal catalysts (Ru/C, Pt/C, and Pd/C), residence time (0.5, 1, 2, and, 4 h), reaction temperature (300, 325, and 350°C), and catalyst loading (0, 5, and 10 wt%). The findings indicated that dechlorination efficiency can be achieved by 99.01% at 350°C and 1 h, with 10 wt% Pd/C loading. Based on chlorine balance, the chlorine content of the solid phase significantly decreased from 568.8 to 5.64 g kg−1 at the same condition. The catalytic HTT solid residue ash has low chlorine content under most operational conditions. These results suggest that catalytic HTT is an effective method to dechlorinate WPVC as a high‐halogenated waste plastic in order to reduce its harmful effect on the environment.

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“…Also, the aqueous phase sample was diluted with DDW (100,000×) and was injected to the IC to determine the chloride content in aqueous phase. Equation () was used to calculate DE, where