Effect of particle association on 2,2′-bipyridyl adsorption onto kaolinite

被引：26

作者：

Helmy, AK ^{[1
]}

Ferreiro, EA ^{[1
]}

de Bussetti, SG ^{[1
]}

机构：

[1] Univ Nacl Sur, RA-8000 Bahia Blanca, Buenos Aires, Argentina

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2000年 / 225卷 / 02期

关键词：

adsorption; bipyridyl; flocculation; kaolinite; particle association;

D O I：

10.1006/jcis.2000.6758

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of particle concentration, in kaolin suspensions, on the adsorption of 2,2'-bipyridyl was studied. Adsorption expressed in units of micromoles per gram decreased as a result of the increase in particle concentration and also as a result of the presence of coagulant (0.25 M NaCl). Dispersion treatment with sodium hexametaphosphate increased the adsorption of bipyridyl. The decrease in adsorption with the increase in particle concentration suggests a possible relation between adsorption and flocculation phenomena. On the basis of classic flocculation theory a straight-line relation was obtained between the square root of the adsorption maximum (mmol/L) and particle concentration (g/L). It is concluded that particle association, which is a function of particle concentration, reduces the surface/aqueous interface and consequently the adsorption of bipyridyl. (C) 2000 Academic Press.

引用

页码：398 / 402

页数：5

共 50 条

[31] STRUCTURE OF (2,2'-BIPYRIDYL)TETRACHLOROPLATINUM(IV)
HAMBLEY, TW
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1986, 42 : 49 - 51
[32] A comparative study on the photochemistry of two bipyridyl derivatives:: [2,2′-bipyridyl]-3,3′-diamine and [2,2′-bipyridyl]-3,3′-diol
Ortiz-Sanchez, Juan Manuel
Gelabert, Ricard
Moreno, Miquel
Lluch, Jose M.
CHEMPHYSCHEM, 2007, 8 (08) : 1199 - 1206
[33] COMPLEXES OF DIARYLTIN DIHALIDES WITH 2,2'-BIPYRIDYL
SRIVASTAVA, TN
AGARWAL, MP
JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 1971, 48 (04) : 366 - +
[34] Isotope effects in complexed 2,2'-bipyridyl
Gameiro, A
Gillard, RD
Bakhsh, MMR
Rees, NH
CHEMICAL COMMUNICATIONS, 1996, (19) : 2245 - 2245
[35] Diaqua(2,2′-bipyridyl)tris(nitrato-κ2O,O′)-praseodyrniurn(III) 2,2′-bipyridyl sesquisolvate
Charushnikova, IA
Den Auwer, C
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2004, 60 : M1420 - M1421
[36] catena-Poly[[(2,2′-bipyridyl)oxidovanadium]-di-μ2-oxido-[(2,2′-bipyridyl)oxidovanadium]-μ3-selenito-bis[(2,2′-bipyridyl)dioxidovanadium]-μ3-selenito]
Lian, Zhao-Xun
Liu, Ping
Zhang, Jia-Min
Wang, Tian-Xi
Lou, Tian-Jun
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 2007, 63 : M525 - M527
[37] MASS-SPECTRAL FRAGMENTATION PATTERN OF 2,2'-BIPYRIDYLS .2. 5-HYDROXY-2,2'-BIPYRIDYL AND 5-ALKOXY-2,2'-BIPYRIDYL
KEATS, NG
SUMMERS, LA
JOURNAL OF HETEROCYCLIC CHEMISTRY, 1976, 13 (03) : 513 - 516
[38] ON THE CHARGE-TRANSFER SPECTRA OF IRON(II)-TRIS(2,2'-BIPYRIDYL) AND RUTHENIUM(II)-TRIS(2,2'-BIPYRIDYL) COMPLEXES
CEULEMANS, A
VANQUICKENBORNE, LG
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (09) : 2238 - 2241
[39] STRUCTURE OF (2,2'-BIPYRIDYL)SALICYLALDEHYDATOCOPPER(II) PERCHLORATE
GARLAND, MT
LEMAROUILLE, JY
SPODINE, E
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1986, 42 : 1518 - 1520
[40] 2,2'-BIPYRIDYL DERIVATIVES OF GROUP VI CARBONYLS
STIDDARD, MH
JOURNAL OF THE CHEMICAL SOCIETY, 1962, (NOV): : 4712 - &

← 1 2 3 4 5 →