期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 164, 期 2-3, 页码 1275-1280出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2008.09.038
关键词
Adsorption; Bisphenol A; Activated carbon; Modification; Kinetics
资金
- National Natural Science Foundation of China [50578051]
- Ministry of Education of China [705013]
Two commercial carbons (W20 and F20) had been selectively modified with nitric acid and thermal treatment under a flow of N-2 in present study to adsorb bisphenol A from aqueous solution. The results indicated that the experimental data were well described with pseudo-second-order kinetic model. W20 and its thermal modified sample (W20N) represented a better adsorption capacity, and the equilibrium adsorption amounts reached 382.12 and 432.34mg/g, respectively. Further, effects of temperature, pH and ionic strength on bisphenol A adsorption onto W20 and W20N had been examined. It was found that the adsorbed amount of bisphenol A decreased with the increase of temperature from 288 to 318 K and changed little with the increase of pH from 5.0 to 9.0. At pH 11.0, the two activated carbons represented the weakest adsorption capacity. The adsorption capacities of bisphenol A onto W20 and W20N first decreased and then increased with the increasing of ionic strength. (C) 2008 Elsevier B.V. All rights reserved.
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