Cited by 85Adsorption and biosorption for pollutant removalThermochemical Biomass Conversion ProcessesRecycling and utilization of industrial and municipal waste in materials production

Characterization and use of char produced from pyrolysis of post-consumer mixed plastic waste

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Martín-Lara, M. A., Piñar, A., Ligero, A., Blázquez, G., Calero, M.·2021·Water

Abstract

In this work, the pyrolysis of post-consumer mixed plastic waste (polypropylene (PP), polystyrene (PS) and polyethylene film (PE)) is carried out. The solid product of the pyrolysis is characterized and tested for its use as adsorbent of lead present in aqueous media. The pyrolysis temperature has a great influence on the solid product yield, decreasing when the temperature increases. The highest yield to solid product obtained is from the pyrolysis of film at lower temperature (450 °C), reaching almost 14%. The results of product solid characterization reveal that the carbon, hydrogen and nitrogen content decreases with increasing pyrolysis temperature. Furthermore, both the ash and the volatile content are related to the pyrolysis temperature. The ash content is higher when the pyrolysis temperature is higher, while when the temperature increases, a solid product with lower volatile content is obtained. In respect to specific surface area, a higher pyrolysis temperature improves the properties of the solid product as an adsorbent. The adsorption capacity increases as the pyrolysis temperature increases, with the highest value of 7.91 mg/g for the solid obtained in the pyrolysis at 550 °C. In addition, adsorption capacity increases as the initial concentration of lead rises, reaching a maximum value close to 26 mg/g for an initial concentration of 40 mg/L. The Sips model is the one that best reproduces the experimental results of the adsorption process equilibrium study.

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Crossref · 10.3390/w13091188

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  • Previous reviews focused only on biochar generated from biomass wastes, leaving out char made from plastic wastes, which can be effective in environmental remediation.

    “they focused only on biochar generated from biomass wastes, leaving out char made from plastic wastes, which can be effective in environmental remediation.225”

    From Technologies and perspectives for achieving carbon neutrality (2021) · cites this paper as [225]

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Research works printed but not linked: 2

  1. Tiwari, S.; Thipathi, L.P.; Tiwari, H.I. Effects of lead on environment. Int. J. Emerg. Res. Manag. Technol. 2013, 2, 1-5.
  2. Murphy, J. Additives for Plastics Handbook, 2nd ed.; Elsevier Advanced Technology, Elsevier Sciences: Amsterdam, The Nether- lands, 2001.

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Authors
Martín-Lara, M. A., Piñar, A., Ligero, A., Blázquez, G., & Calero, M.
Affiliations
  • Chemical Engineering Department, University of Granada, Avda. Fuentenueva, 18071 Granada, Spain
  • Universidad de Granada (ES)
Corresponding author
Calero, M.
Venue
Water
Publisher
MDPI AG
Published
2021-04-25
Volume
13
Issue
9
Pages
1188
ISSN
2073-4441 (ISSN-L)
OpenAlex
W3158469334
Cited by
85
References
46
Citations by year
2026: 20 · 2025: 20 · 2024: 15 · 2023: 12 · 2022: 15 · 2021: 3
FWCI
3.35
Type
journal article
Language
en
Open access
Locations
  • Water (publishedVersion, cc-by)
  • Institutional Repository of the University of Granada (University of Granada) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
State Research Agency - Spain (PID2019-108826RB-I00/SRA)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
  • Physical Sciences › Engineering › Building and Construction › Recycling and utilization of industrial and municipal waste in materials production
Keywords
plastic waste pyrolysis, polypropylene, polystyrene, polyethylene film, char, lead adsorption, adsorbents, pyrolysis temperature, specific surface area, Sips isotherm, adsorption equilibrium, wastewater treatment

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