Activated coke impregnated with cerium chloride used for elemental mercury removal from simulated flue gas

Elemental mercury removal by the modified bio-char from medicinal residues

“…This phenomenon was also observed by Tan et al for the bio-char from biomass [4]. After microwave and steam activation, the FTIR absorption peaks of S6W, S6WH5 8 and S6WN5 between 1400 and 400 cm -1 show lower intensities than their pyrolysed bio-chars without microwave activation, for example S6W< S6. The change in intensity is consistent with previous studies [18,22], stating that activation can cause decomposition of the surface bound hydrogen groups.…”

“…The weak peak at 529.4 (529.9) eV was attributed to lattice oxygen (O 2-) in metal oxides [8,27]. According to the ash analysis, this could be the oxide of calcium, iron and manganese in ash.…”

“…The main peak at 531.8 (531.4) eV contributed to chemisorbed oxygen or/and weakly bonded oxygen species (C-O*) [27,28]. Previous study suggested that the metal oxide could generate a charge imbalance, vacancies and chemical bonds on the surface of sorbents, resulting in the introduce of more chemisorbed oxygen or/and weakly bonded oxygen species [8,29].…”

“…However, the high cost for AC injection is beyond the economic tolerance of combustion system. Consequently, various inexpensive carbonaceous absorbent materials were extensively studied, such as the carbonaceous absorbent materials from mulberry twig [6], bamboo [4], coconut shells [7] and coke [8]. Some kinds of inexpensive inorganic materials were also considered as promising absorbents, for example bentonite [9], natural mineral sorbents [10] and fly ash [11].…”

Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal

“…Tao et al [72] reported activated coke impregnated with cerium chloride used for elemental mercury removal from simulated flue gas. The effects of CeCl 3 loading values, reaction temperatures and individual flue gas components including O 2 , NO, SO 2 and H 2 O (g) on Hg 0 removal efficiency of AICC samples were investigated.…”