The main point of this study is to investigate the optimal conditions for preparation of
activated carbon from wood sawdust (ACWSD) for removal of hydrogen sulfide (H2S)
from wastewater. The response surface methodology (RSM) was employed to prepare
the ACWSD by chemical activation with potassium hydroxide (KOH). The three
preparation variables impact of activation temperature (724 – 1000 °C), KOH: precursor
(wt%) impregnation ratio (IR) (2:1 – 4:1) and activation time (60 – 120 min) on
removal efficiency (RE, %) of H2S and activated carbon yield (ACY, %) were
investigated. The preparation parameters were correlated by developing a quadratic
model depend on the central composite design (CCD) to the two responses. The
analysis of variance (ANOVA) was identified the most influential variable on each
experimental design responses. The results showed that the temperature of 854 °C,
chemical impregnation ratio of 2.95 wt% and activation time of 80 min were the
optimum conditions for preparation of ACWSD with responses of RE and ACY of
72.88 % and 31.89 %, respectively. It is concluded that the ACWSD was appeared to be
a favorable substance for removal of dissolved H2S from synthetic wastewater
تاريخ النشر
30/04/2017
الناشر
Journal of Chemical Engineering and Industrial Biotechnology
جمعه عبدالجواد محمد على | Gomaa A. M. Ali | 20072