ADSORPTION OF SULFUR-DIOXIDE BY ACTIVE-CARBON TREATED BY NITRIC-ACID - I - EFFECT OF THE TREATMENT ON ADSORPTION OF SO2 AND EXTRACTABILITY OF THE ACID FORMED

Authors
LISOVSKII A SEMIAT R AHARONI C
Citation
A. Lisovskii et al., ADSORPTION OF SULFUR-DIOXIDE BY ACTIVE-CARBON TREATED BY NITRIC-ACID - I - EFFECT OF THE TREATMENT ON ADSORPTION OF SO2 AND EXTRACTABILITY OF THE ACID FORMED, Carbon, 35(10-11), 1997, pp. 1639-1643
Citations number
13
Journal title
Carbon → ACNP
ISSN journal
00086223
Volume
35
Issue
10-11
Year of publication
1997
Pages
1639 - 1643
Database
ISI
SICI code
0008-6223(1997)35:10-11<1639:AOSBAT>2.0.ZU;2-U
Abstract
The process of adsorptive-catalytic cleaning of gas from sulfur dioxid e using active carbon, treated by concentrated nitric acid, was studie d. After oxidative treatment the acidity of the carbon increases and t he basicity decreases. This results in an increase of the SO2 adsorpti on and its oxidation to SO3, and in weaker retention of the sulfuric a cid formed. This facilitates the removal of H2SO4 by washing of the ca rbon and allows to obtain a more concentrated acid. The efficiency of the treated carbon is also higher in the process of SO2 removal from a gas similar in composition to stack gases. (C) 1997 Elsevier Science Ltd.