谷壳作为Pb(Ⅱ)离子吸附剂的改性剂优选  

Modification reagent optimization of husk as Pb(Ⅱ) sorbent

作　　者：汤琪[1] 涂胜[1] 王孝华[1] 刘攀[1] 李传强[1] 吴晓燕[1] 

机构地区：[1]重庆交通大学材料科学与工程学院,重庆400074

出　　处：《应用化工》2017年第5期871-874,共4页Applied Chemical Industry

基　　金：国家自然科学基金(21307168);重庆市自然科学基金(cstcjj A50016);重庆交通大学实验教学改革与研究基金(syjg201527)

摘　　要：对比了改性剂改性谷壳对Pb^(2+)的吸附效果。改性碱化谷壳对Pb^(2+)的吸附率高于改性未碱化谷壳。各种改性谷壳对Pb^(2+)的吸附率高低排序为:苯胺改性谷壳>环氧氯丙烷加乙二胺改性谷壳>双氧水改性谷壳>乙二胺改性谷壳>甲醛改性谷壳>高锰酸钾改性谷壳>双氧水加乙二胺改性谷壳>环氧氯丙烷改性谷壳>硝酸改性谷壳>柠檬酸改性谷壳>磷酸改性谷壳。综合兼顾对Pb^(2+)的吸附效果,改性工艺环保性、复杂性,成本高低,各种改性剂的综合性能优劣排序为:双氧水>高锰酸钾>苯胺>柠檬酸>甲醛>硝酸>磷酸>双氧水加乙二胺>环氧氯丙烷>乙二胺>环氧氯丙烷加乙二胺。双氧水是综合性能最好的改性剂。The Pb （II） adsorption effect of husk modif ied by much reagent were compared. The Pb （II） adsorption rate of alkalizat ion husk modif ied by reagent is higher than unalkalizat ion husk modif ied by re-agent. The sequence of adsorption rate of various modif ied husk is as follows ： husk modified byaniline ; husk modified by epichlorohydrin plus ethylene diamine ;husk modif ied hydrogen peroxide ; husk modified ethylenediamine; husk modif ied formalde hyde; husk modif ied potassium permanganate; husk modif ied hy-drogen peroxide plus ethylene d iamine; husk modif ied ep ich loro hyd rin ; husk modif iednitricacid ; husk modified ci tric acid ; husk modif ied phosphoric acid . Takingin to account adsorptionrate , environmental property and the complexity of modif ied technics, modif iedcost, the good sequence o f modif ied reagent is as follows ： hydrogen peroxide 〉 potassium permanganate 〉 aniline 〉 citricacid 〉 formaldehyde 〉 nitric acid 〉 phosphoric acid 〉 hydrogen peroxide plus ethylene diamine 〉 epichloro hydrin 〉 ethylene diamine 〉 epichlorohydrin plus ethylene diamine. Hydrogen peroxide are best modif ied reagent of husk as Pb （ I I ） sorbent.

关 键 词：谷壳 Pb(Ⅱ) 优选 改性剂 

分 类 号：TQ041.8[化学工程] TQ085.4