Production of activated carbons from pyrolysis of waste tires impregnated with potassium hydroxide

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Abstract

Activated carbons were produced from waste tires using a chemical activation method. The carbon production process consisted of potassium hydroxide (KOH) impregnation followed by pyrolysis in N2 at 600-900 °C for 0-2 hr. The activation method can produce carbons with a surface area (SA) and total pore volume as high as 470 m2/g and 0.57 cm3/g, respectively. The influence of different parameters during chemical activation, such as pyrolysis temperature, holding time, and KOH/tire ratio, on the carbon yield and the surface characteristics was explored, and the optimum preparation conditions were recommended. The pore volume of the resulting carbons generally increases with the extent of carbon gasified by KOH and its derivatives, whereas the SA increases with degree of gasification to reach a maximum value, and then decreases upon further gasification.

Original languageEnglish
Pages (from-to)1940-1946
Number of pages7
JournalJournal of the Air and Waste Management Association
Volume50
Issue number11
DOIs
Publication statusPublished - 2000 Nov

All Science Journal Classification (ASJC) codes

  • Management, Monitoring, Policy and Law
  • Waste Management and Disposal
  • Atmospheric Science
  • Environmental Engineering
  • Environmental Science(all)
  • Environmental Chemistry
  • Pollution

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