Preparation of activated carbon with large specific surface area from reed black liquor

Y. Sun, J. P. Zhang, G. Yang, Z. H. Li

Research output: Journal PublicationArticlepeer-review

32 Citations (Scopus)

Abstract

Activated carbon with large specific surface area and well-developed porosity was prepared from pyrolysis of K2CO3-impregnated lignin precipitated from reed pulp black liquors. The impregnation ratio was 1:1. The effect of activation temperature upon the Brunauer-Emmett-Teller (BET) specific surface area and pore volume of the carbon was closely investigated. Increasing activation temperature led to an opening and widening of the porous structure below 800°C. Above 800°C, the excess widening of pore led to the decrease of BET surface area and micropore volume. The BET surface area and pore volume of the carbon activated at 800°C were 1395 m2 g-1 and 0.7702 ml g-1, respectively. The potential application of the carbon activated at 800°C for removal of Cr (VI) was also investigated. The experimental results showed that it had good adsorption capacity.

Original languageEnglish
Pages (from-to)491-497
Number of pages7
JournalEnvironmental Technology (United Kingdom)
Volume28
Issue number5
DOIs
Publication statusPublished - May 2007
Externally publishedYes

Keywords

  • Activated carbon
  • BET specific surface area
  • Cr (VI)
  • Reed lignin

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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