Methacryloylamidoglutamic Acid Incorporated Porous Poly(methyl methacrylate) Beads for Heavy-Metal Removal
Methacryloylamidoglutamic Acid Incorporated Porous Poly(methyl methacrylate) Beads for Heavy-Metal Removal
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DOI：
10.1021/ie030204z
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发表时间：
2004-07
影响因子：
4.2
通讯作者：
A. Denizli;N. Şanlı;B. Garipcan;S. Patır;Güleren Alsancak
中科院分区：
文献类型：
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作者：
A. Denizli;N. Şanlı;B. Garipcan;S. Patır;Güleren Alsancak
以甲基丙烯酰氨基谷氨酸(MAGA)为单体，与甲基丙烯酸甲酯(−)共聚，制得了平均粒径为15 0−2 0 0μm的聚甲基丙烯酸甲酯(MMA)微珠。用溶胀和比表面积研究、扫描电子显微镜和元素分析对聚甲基丙烯酸甲酯(−)微珠进行了表征。这些膨胀率为36.4%、MAGA含量为696μ/g的多孔珠被用于去除含镉、汞和铅的重金属。聚甲基丙烯酸甲酯−微珠的比表面积约为67.8m2/g。金属吸附结果与溶液性质(即介质pH和金属浓度)和要吸附的金属类型有关。吸附容量分别为2 9.9 mg/g(14 9μm ol/g)、2 8.2 mg/g(2 5 0μm ol/g)和65.2 mg/g(314μm ol/g)。在所观察的摩尔基上的吸附容量顺序为：铅(II)>；Cd(II)>；汞(II)。人工合成废水中重金属离子的吸附研究。
Poly(methyl methacrylate−methacryloylamidoglutamic acid) beads (average diameter 150−200 μm) were prepared by copolymerizing methyl methacrylate (MMA) with methacryloylamidoglutamic acid (MAGA). Poly(MMA−MAGA) beads were characterized by swelling and surface area studies, scanning electron microscopy, and elemental analysis. These porous beads with a swelling ratio of 36.4% and containing 696 μmol of MAGA/g were used for heavy-metal removal involving cadmium, mercury, and lead. Poly(MMA−MAGA) beads have a specific surface area of about 67.8 m2/g. Metal adsorption results were found to be a function of solution properties (i.e., medium pH and metal concentration) and the types of metals to be adsorbed. We have obtained adsorption capacities as 29.9 mg/g (149 μmol/g) for Hg(II), 28.2 mg/g (250 μmol/g) for Cd(II), and 65.2 mg/g (314 μmol/g) for Pb(II). The adsorption capacities on an observed molar basis were in the order of Pb(II) > Cd(II) > Hg(II). Adsorption of heavy-metal ions from synthetic wastewater w...