Removal of hydrogen sulfide, ammonia and nitrite ions from water solutions using modified active carbons

被引：1

作者：

Lupascu, T. ^{[1
]}

Nastas, Raisa ^{[1
]}

Ciobanu, M. ^{[1
]}

Arapu, Tatiana ^{[1
]}

Rusu, V. ^{[1
]}

机构：

[1] Moldavian Acad Sci, Inst Chem, Acad Str 3, MD-2028 Chishinau, Moldova

来源：

COMBINED AND HYBRID ADSORBENTS: FUNDAMENTALS AND APPLICATIONS | 2006年

关键词：

active carbons; sorption; hydrogen sulfide; ammonia; nitrite ions;

D O I：

10.1007/1-4020-5172-7_28

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Modified active carbons were used for removal of hydrogen sulfide, ammonia and nitrite ions from water solutions. Obtained results demonstrate that active carbon oxidized with H2O2 following impregnation with Co(II) possesses higher adsorption capacity for NH4+ compared with unimpregnated samples. It was established that active carbon obtained from nut shells has better oxidation properties compared with active carbons obtained from plum stones. The optimal conditions for adsorption and oxidation of sulfide and hydro-sulfide ions were established. Active carbons impregnated with Fe+3 and Cu+2 ions possess higher oxidation capacity demonstrating that these catalysts more effectively catalyze the oxidation of sulfide ions to S-IV and S-VI species.

引用

页码：243 / +

页数：2