Use of immobilized tannin adsorbent for removal of Cr(VI) from water

被引：17

作者：

Lima, L

Olivares, S

Martinez, F

Torres, J

de la Rosa, D

Sepulveda, C

机构：

[1] Inst Super Ciencias & Technol Nucl, Havana 6163, Cuba

[2] IPEN CNEN SP, BR-05422970 Sao Paulo, Brazil

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 1998年 / 231卷 / 1-2期

关键词：

D O I：

10.1007/BF02388001

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Adsorption of Cr(VI) by two tannin sorbents is evaluated using radiotracers. Evaluation of the sorption process shows that the Cr(VI) -tannin molecule binding is the principal responsible For chromium adsorption. High sorption capacities were registered for both sorbents at pH 2. For Eucaliptus Saligna Sm sorbent (ETS) sorption capacity is 0.92+/-0.03 mmol/g and for Lysiloma latisiliqua sorbent (LTS) is 3.8+/-0.3 mmol/g. Influence of different ions present in water is examined. High sorption capacity is reported for LTS in sea and tap water samples. It represents 90-94% of adsorption in distillated water.

引用

页码：35 / 40

页数：6

共 13 条

[1]

DRAKE L, 1996, ANAL CHEM, V1, pA22

[2] DETERMINATION OF CHROMIUM(III) AND CHROMIUM(VI) IN RIVER WATER BY ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY AFTER SORPTION PRECONCENTRATION IN A MICROWAVE FIELD [J].