Removal of hydrogen sulfide through an electrochemically assisted scrubbing process using an active Co(III) catalyst at low temperatures

被引：27

作者：

Govindan, Muthuraman ^{[1
]}

Chung, Sang-Joon ^{[1
]}

Jang, Jae-Wook ^{[1
]}

Moon, Il-Shik ^{[1
]}

机构：

[1] Sunchon Natl Univ, Dept Chem Engn, Sunchon 540742, Chonnam, South Korea

来源：

CHEMICAL ENGINEERING JOURNAL | 2012年 / 209卷

关键词：

Low temperature; Winter; Active cobalt(III); Electrochemically assisted; H2S; OXIDATION; SULFUR; CARBON; MECHANISM; MEDIATOR; KINETICS; WATER; ACID; H2S;

D O I：

10.1016/j.cej.2012.08.017

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The authors describe the development and application of an electrochemically assisted wet scrubbing process for H2S removal at low temperature. Measurements of the oxidation efficiency of Co(II) at different temperatures demonstrated that its efficiency increased markedly at low temperatures (10 degrees C). Electro-reactor and normal pulse voltammetry results showed that the removal of H2S (95%) proceeded via mediated electrocatalytic oxidation. An increase in the total acidity of the anolyte solution suggested that SO42- could be the final product. Experiments were optimized using different reaction conditions, such as, by changing H2S loading, active Co(III) concentration, and hydrogen sulfide flow rates. At a high active Co(III) concentration (0.066 M) and a low H2S flow rate (10 L min(-1)), H2S removal was favorable at 10 degrees C. The use of Co(III) as a mediator at low temperature during electrochemically assisted wet scrubbing appears to offer a means of effectively removing H2S during the winter. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：601 / 606

页数：6

共 31 条

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