The sorption effect of Na-attapulgite on heavy metal ion of Co(II) was studied. The experimental factors such as contact time, solid content, pH value, ionic strength, foreign ions, FA and temperature on the adsorption ratio were investigated. The results indicate that the sorption of Na-attapulgite on Co(II) ions achieves equilibration rapidly and can be described well by pseudo-second-order model. pH and ionic strength are the main impact factors and the sorption effect of Na-attapulgite on Co(II) ions is mainly dominated by ion exchange and/or outer-sphere surface complexation. The thermodynamic parameters (△G°, △S°, △H°) calculated from the temperature-dependent sorption isotherms indicated that the sorption of Na-attapulgite on Co(II) is an endothermic and spontaneous process and Langmuir model simulated the experimental data very well.
张万旭. 钠基凹凸棒土对模拟废水中重金属Co（II）离子的吸附研究[J]. 煤炭与化工, 2018, 41(9): 148-154.
Zhang Wanxu. Study on the sorption effect of Na-attapulgite on heavy metal ion of Co（II） in simulated wastewater. CCI, 2018, 41(9): 148-154.
[ 1 ] 李珍媛. 一次核试验的地下放射性核素调查[ J ]. 国外铀金地质，1996，13（ 1 ）：74 - 82.
[ 2 ] 李雯玺，邵嘉慧，蒯琳萍，等. 聚乙烯亚胺辅助超滤法处理
含锶含钴废水[ J ]. 净水技术，2011，30（ 4 ）：31 - 34.
[ 3 ] 柳建设，夏海波，王兆慧. 硫化沉淀-混凝法处理氧化钴生产废水[ J ]. 中南大学学报，2004，35（ 6 ）：940 - 944.
[ 4 ] 易发成. 沸石活化处理及其对铅、钴的吸附性研究[ J ]. 矿物岩石，2005，25（ 3 ）：118 - 121.
[ 5 ] Lynwood Haden W, Albert Schwint I. Attapulgite: its properties and applications [ J ]. Industrial and Engineering Chemistry, 1967, 59( 9 ): 59 - 69.
[ 6 ] 田 煦. 中国坡缕石矿石特征及物化性能研究[ J ]. 矿产综合利用，1996（ 6 ）：1 - 4.
[ 7 ] Cao E, Bryant R, Willianms D J A. Electrochemical properties of Na-palygorskite [ J ]. J. Colloids Interf Sci, 1996, 179: 143 - 150.
[ 8 ] Hu J, Shao D D, Chen C L, et al. Plasma induced grafting of cyclo-
dextrin onto multiwall carbon nanotube/iron oxides for adsorbent application[ J ]. J Phys Chem, B 2010, 114: 6 779 - 6 785.
[ 9 ] Yang S T, Li J X, Shao D D, et al. Adsorption of Ni(II) on oxidized multi-walled carbon nanotubes: Effect of contact time, pH, foreign ions and PAA[ J ]. J Hazard Mater, 2009, 166: 109 - 116.
[ 10 ] Sheng G D, Hu J Jin H, et al. Effect of humic acid, fulvic acid, pH, ionic strength and temperature on 63Ni(II) sorption to MnO2[ J ]. Radiochim Acta, 2010, 98( 5 ): 291 - 299.
[ 11 ] Tan L Q, Jin Y L, Cheng X C, et al. Sorption of radioeuropium onto attapulgite: Effect of experimental conditions [ J ]. J Radioanal Nucl Chem 2011, 290: 575 - 585.
[ 12 ] Shao D D, Fan Q H, Li J X, et al. Removal of Eu(Ⅲ) from aqueous solution using ZSM-5 zeolite[ J ]. Microporous Mesoporous Mater, 2009, 123: 1 - 9.
[ 13 ] Shao D D, Xu D, Wang S W, et al. Modeling of radionickel sorption on MX-80 bentonite as a function of pH and ionic strength[ J ]. Sci China, Ser B, 2009, 52: 362-371.
[ 14 ] Sheng G D, Hu J, Wang X K. Sorption properties of Th(IV) on the raw diatomite-Effect of contact time, pH, ionic strength and temperature [ J ]. Appl Radiat Isot, 2008, 66: 1 313 - 1 320.
[ 15 ] Chen C L, Wang X K. Sorption of Th(IV) to silica as a function of pH, humic/fulvic acid, ionic strength, electrolyte type[ J ]. Appl Radiat Isot, 2007, 65: 155 - 163.
[ 16 ] Sheng G D, Wang S W, Hu J, et al. Adsorption of Pb(II) on diato-
mite as affected via aqueous solution chemistry and temperature[ J ]. Colloids Sur, A 2009, 339: 59-166.
[ 17 ] Chen H, Zhao Y G, Wang A Q. Removal of Cu(II) from aqueous solution by adsorption onto acid-activated palygorskite[ J ]. J Hazard Mater, 2007, 149: 346 - 354.
