Hydrogen sulfide removal from the waste gas of phosphoric acid plant

被引：2

作者：

Lagha, Arwa ^{[1
]}

Ouederni, Abdelmottaleb ^{[1
]}

Ben Abdallah, Hedi ^{[2
]}

机构：

[1] Univ Gabes, Natl Engn Sch Gabes, Res Lab Chem Engn & Ind Syst, St Omar Ibn Elkhattab, Gabes 6029, Tunisia

[2] Tunisian Chem Grp GCT, Gabes, Tunisia

来源：

ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY | 2020年 / 39卷 / 01期

关键词：

catalytic oxidation; H2S; neutralization; olive stone; ACTIVATED CARBON; CATALYTIC-OXIDATION; OLIVE STONES; ABSORPTION; KINETICS; H2S; ADSORPTION;

D O I：

10.1002/ep.13304

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The wet manufacturing process of the phosphoric acid plant generates a waste gas containing hydrogen sulfide (H2S), a malodorous and toxic gas. In this study, a new application, coupling the neutralization in potassium hydroxide (KOH) solution and the catalytic oxidation (designated as KOC), was developed to treat H2S. In fact, the waste gas of the phosphoric acid plant was neutralized in KOH solution in the presence of the air oxygen as an oxidizing agent and the activated carbon (AC) prepared from an agricultural waste, that is, the olive stone, as a catalyst. The process was efficient in both batch and cyclic configurations. The "KOC batch" process offers the retention of more than 40 mgS and allows high removal of H2S compared to absorption alone. The "KOC cyclic" process treated 800 mgS/g of AC.

引用

页数：8

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