期刊论文

中文

环境科学与技术

1003-6504

2012

35

5

136-140

10.3969/j.issn.1003-6504.2012.05.030

本校为第一机构

研究了改性MCM-41材料对污水中重金属铅、镉离子的吸附行为。在MCM-41材料中加入Al、Ti两种诱因金属离子来合成新的Al-Ti-MCM-41及Ti-Al-MCM-41改性材料,通过氮气吸附-脱附等温线对Al-Ti-MCM-41(Al/Ti=1∶1)及Al-Ti-MCM-41(Al/Ti=2∶1)样品进行了表征,并采用改性后的MCM-41材料为吸附剂对含有二价铅、镉离子的溶液进行吸附实验,考察了吸附剂投加量,Pb~(2+)、Cd~(2+)初始质量浓度和吸附温度对吸附的影响。结果表明:改性Al-Ti-MCM-41(Al/Ti=1∶1)材料的最可几孔径和比孔容分别为16.68 nm和0.046 cm~3/g,由BJH计算得到的平均孔径为17.02 nm;Al-Ti-MCM-41(Al/Ti=2∶1)的最可几孔径和比孔容分别为16....

Al-Ti-MCM-41 and Ti-Al-MCM-4,the new adsorbing materials made by modifying MCM-41 with aluminum and titanium ions,were prepared and used as adsorbents to remove Cd2＋ and Pb2＋ from wastewater at a bench-scale level.The adsorption behavior of the modified MCM-41 was investigated and the results revealed the data of pore diameters and specific pore volumes of the new modified adsorbents and reported the adsorption ratios of Cd2＋ and Pb2＋ ions onto Al-Ti-MCM-41 i.e.,99.8% and 99.96% respectively.According to the investigation,generally adsorpti...