【摘要】 对介孔炭CMK-3进行单质硫改性得到OMC-S,并通过静态吸附实验研究了该材料对水溶液中汞的吸附性能。研究结果表明:单质硫改性可以在介孔炭上负载12.33%的硫,从而使得介孔炭对汞的吸附容量从185 mg/g提高到476 mg/g;OMC-S具有较广的适用pH值范围,在pH 3~11.5范围内其对汞的吸附去除率均达到92%以上;氯离子对OMC-S的吸附性能具有一定的抑制作用,原因在于它能和汞离子络合形成一系列吸附性能较差的Hg-Cl络合物,而腐殖酸在所研究的范围内对OMC-S的吸附性能无明显影响。更多还原

【Abstract】 An elemental sulfur-modified ordered mesoporous carbon(OMC-S) was prepared by impregnating elemental sulfur on the surface of CMK-3.Batch tests were performed to study aqueous Hg(Ⅱ) adsorption properties of OMC-S.Results showed that 12.33% sulfur was impregnated onto CMK-3,and the Qmax was increased from 185 mg/g to 476 mg/g.Hg adsorption removal rate was generally over 92% in the range of pH 3 to 11.5.The existence of Cl-decreased Hg adsorption because of the formation of Hg-Cl complex which had weaker affinity to OMC-S comparing with Hg-OH complex.While the existence of HA did not show obvious impact on the Hg adsorption.更多还原