期刊论文

Effects of coexisting ions on adsorption of Pb~(2+)onto Bentonite/LS-g-AM-co-MAH

Xie, Jianjun(xiejianjun12@sina.com)

中文

复合材料学报

1000-3851

2016

33

10

2181-2186

10.13801/j.cnki.fhclxb.20151118.002

国家自然科学基金（31270603） 湖南省研究生科研创新项目（CX2015B285）

本校为第一且通讯机构

采用自制膨润土/木质素磺酸钠接枝丙烯酰胺-马来酸酐复合吸附树脂(Bentonite/LS-g-AM-co-MAH), 研究了外加电解质中竞争阳离子与共存阴离子对Bentonite/LS-g-AM-co-MAH吸附Pb~(2+)的影响。结果表明:竞争阳离子Li~+、Na~+、K~+、Mg~(2+)、Ca~(2+)、Ni~(2+)、Co~(2+)、Zn~(2+)、Cd~(2+)和Cu~(2+)抑制Pb~(2+)的吸附,抑制作用顺序为Cu~(2+) > Cd~(2+)>Zn~(2+)>Co~(2+)>Ni~(2+)>Ca~(2+)>Mg~(2+)>K~+>Na~+>Li~+;Fe~(3+)和Al~(3+)在pH=2.0~3.0时抑制Pb~(2+)的吸附, 在pH=4.0~6.0时促进Pb~(2+)的吸附,两者的影响顺序为Fe~(3+) >Al~(3+)。共存阴离子NO_3~- 、Cl~-和Br~-抑制Pb~(2+)的吸附,抑制作用顺序为...

Self-made composite adsorbent resins comprising of Bentonite/sodium lignosulfonate graft-polymerized with acrylamide and maleic anhydride (Bentonite/LS-g-AM-co-MAH) were used to investigate the effect of competitive cations and coexisting anions in supporting electrolyte on the adsorption of Pb2+onto Bentonite/LS-g-AM-co-MAH. The results show that, under the presence of Li+, Na+, K+, Mg2+, Ca2+, Ni2+, Co2+, Zn2+, Cd2+and Cu2+in the solution, the removal capacities of Pb2+reduce and the order of decreasing effect is as follows: Cu2+>Cd2+>Zn2+>Co2+>Ni2+>Ca2+>Mg2+>K+>Na+&g...