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Pb2+的影响。结果表明：竞争阳离子 Li+、Na+、K+、Mg2+、Ca2+、Ni2+、Co2+、Zn2+、Cd2+和 Cu2+抑制 Pb2+的吸附，抑制作用顺序为 Cu2+>Cd2+>Zn2+>Co2+>Ni2+>Ca2+>Mg2+>K+>Na+>Li+；Fe3+和 Al3+在 pH=2.0~3.0时抑制 Pb2+的吸附，在 pH=4.0~6.0时促进Pb2+的吸附，两者的影响顺序为 Fe3+>Al3+。共存阴离子 NO-3、Cl-和 Br-抑制 Pb2+的吸附，抑制作用顺序为Br->Cl->NO-3；SO2-4和PO3-4有利于去除Pb2+，两者影响基本相同。
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 competi-tive 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+>Li+.Under the existence of Fe3+ and Al3+ in the solu-tion,the adsorption of Pb2+ decreases at pH=2.0-3.0 and increases at pH=4.0-6.0,and the effect order is Fe3+>Al3+.Coexisting anions NO-3 ,Cl- and Br- in the solution have negative effect on the Pb2+ adsorption and the de-creasing order is Br->Cl->NO-3 .SO2-4 and PO3-4 in the solution have positive effect on the removal of Pb2+ and their effects are quite similar.
参考文献
| [1] | Li, Xiaohong;Wang, Zheng;Li, Qing;Ma, Jiaxian;Zhu, Mingzi.Preparation, characterization, and application of mesoporous silica-grafted graphene oxide for highly selective lead adsorption[J].Chemical engineering journal,2015:630-637. |
| [2] | Wang, Yaoguang;Shi, Li;Gao, Liang;Wei, Qin;Cui, Limei;Hu, Lihua;Yan, Liangguo;Du, Bin.The removal of lead ions from aqueous solution by using magnetic hydroxypropyl chitosan/oxidized multiwalled carbon nanotubes composites[J].Journal of Colloid and Interface Science,2015:7-14. |
| [3] | Modenes, Aparecido N.;Espinoza-Quinones, Fernando R.;Colombo, Andreia;Geraldi, Claudineia L.;Trigueros, Daniela E. G..Inhibitory effect on the uptake and diffusion of Cd2+ onto soybean hull sorbent in Cd-Pb binary sorption systems[J].Journal of Environmental Management,2015:22-32. |
| [4] | Competitive Adsorption Of Copper(Ⅱ), Cadmium(Ⅱ), Lead(Ⅱ) And Zinc(Ⅱ) Onto Basic Oxygen Furnace Slag[J].Journal of hazardous materials,20091(1):391. |
| [5] | F. Esmadi;J. Simm.Sorption of cobalt(Ⅱ) by amorphous ferric hydroxide[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,19952/3(2/3):265-270. |
| [6] | 邵大冬;许笛;王所伟;范桥辉;吴王锁;董云会;王祥科.pH值和离子强度对放射性核素镍在MX-80黏土上的吸附影响和模型研究[J].中国科学B辑,2008(11):1025-1034. |
| [7] | Shaobin Wang;T. Terdkiatburana;M.O. Tade.Adsorption of Cu(II), Pb(II) and humic acid on natural zeolite tuff in single and binary systems[J].Separation and Purification Technology,20081(1):64-70. |
| [8] | Motoi Machida;Masami Aikawa;Hideki Tatsumoto.Prediction of simultaneous adsorption of Cu(Ⅱ) and Pb(Ⅱ) onto activated carbon by conventional Langmuir type equations[J].Journal of hazardous materials,20051/3(1/3):271-275. |
| [9] | Heidari, A.;Younesi, H.;Mehraban, Z.;Heikkinen, H..Selective adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution using chitosan-MAA nanoparticles[J].International Journal of Biological Macromolecules: Structure, Function and Interactions,2013:251-263. |
| [10] | 陈灿;王建龙.重金属离子的生物吸附容量与离子性质之间的关系[J].环境科学,2007(8):1732-1737. |
| [11] | Zacaria Reddad;Claire Gerente;Yves Andres;Pierre Le Cloirec.Adsorption of several metal ions onto a low-cost biosorbent: kinetic and equilibrium studies[J].Environmental Science & Technology: ES&T,20029(9):2067-2073. |
| [12] | 汤鸿霄.羟基聚合氯化铝的絮凝形态学[J].环境科学学报,1998(01):1. |
| [13] | V.J.Inglezakis;A.A.Zorpas;M.D.Loizidou;H.P.Grigoropoulou.The effect of competitive cations and anions on ion exchange of heavy metals[J].Separation and Purification Technology,20053(3):202-207. |
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