Characteristic and mercury adsorption of activated carbon produced by CO2of chicken waste
HUANG Yaji , JIN Baosheng , ZHONG Zhaoping , ZHONG Wenqi , XIAO Rui
DOI:
Received April 17, 2007,Revised July 19, 2007, Accepted , Available online
Volume 20,2008,Pages 291-296
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Preparation of activated carbon from chicken waste is a promising way to produce a useful adsorbent for Hg removal. A three-stage
activation process (drying at 200℃, pyrolysis in N2 atmosphere, followed by CO2 activation) was used for the production of activated
samples. The effects of carbonization temperature (400–600℃), activation temperature (700–900℃), and activation time (1–2.5 h) on
the physicochemical properties (weight-loss and BET surface) of the prepared carbon were investigated. Adsorptive removal of mercury
from real flue gas onto activated carbon has been studied. The activated carbon from chicken waste has the same mercury capacity as
commercial activated carbon (Darco LH) (Hgv: 38.7% vs. 53.5%, Hg0: 50.5% vs. 68.8%), although its surface area is around 10 times
smaller, 89.5 m2/g vs. 862 m2/g. The low cost activated carbon can be produced from chicken waste, and the procedure is suitable.
