The activated carbon achieved from sycamore bark via activation of zinc chloride was used to dispose Conge red wastewater. The characteristics of sycamore bark activated carbon were characterized by SEM and BET. The effects of adsorbent dosage, time, and shaking speed on the adsorption properties of Congo red by sycamore bark activated carbon were studied. The isotherm, kinetics, and thermodynamics of adsorption were explored. The results revealed that the activated carbon contains many apparent mesopores with well-developed pore structure. Adsorption efficiency was increased with enhancing the adsorption dosage. The adsorption reached equilibrium basically after 120 min. The removal rate of Conge red reached to 98.2% under room temperature with adsorbent dosage of 3.0 g/L, adsorption time of 120 min, shaking speed of 60 r/min. The adsorption of Congo red on sycamore bark activated carbon was followed Langmuir isotherm model and Lagergren pseudo-second order kinetics model. The adsorption is a spontaneous and endothermic entropy increase process.
Xinlai WEI Cong LI Jie JIN Ke WU Dandan ZHANG Yanbei WU
.
Adsorption Properties of Sycamore Bark Activated Carbon for Conge Red
[J]. The Chinese Journal of Process Engineering, 2017
, 17(3)
: 484
-490
.
DOI: 10.12034/j.issn.1009-606X.216294
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