Selenium uptake and simultaneous catalysis of sulfite oxidation in ammonia-based desulfurization

被引：14

作者：

Li, Qiangwei ^{[1
]}

Wang, Yuguo ^{[1
]}

Xing, Lei ^{[1
]}

Qi, Tieyue ^{[1
]}

Zhang, Lin ^{[1
]}

Liu, Jie ^{[1
]}

Zhang, Shihan ^{[2
]}

Ma, Yongliang ^{[3
,4
]}

Wang, Lidong ^{[1
]}

机构：

[1] North China Elect Power Univ, Dept Environm Sci & Engn, Hebei Key Lab Power Plant Flue Gas Multipollutant, Baoding 071003, Peoples R China

[2] North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China

[3] Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Peoples R China

[4] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2021年 / 103卷

关键词：

Selenium; Adsorption; Re-emission; Sulfite oxidation; Catalyst; FLUE-GAS; FUNCTIONALIZED SBA-15; METAL-IONS; SELECTIVE ADSORPTION; MESOPOROUS SILICAS; OXYGEN EVOLUTION; REMOVAL; COAL; WATER; SPECIATION;

D O I：

10.1016/j.jes.2020.10.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Accelerating the (NH4)(2)SO3 oxidation gives rise to the reclaiming of byproduct, while there are secondary environmental risks from reduction of the coexisted selenium species by sulfite. In this study, a bi-functional Co-SBA-15-SH, were synthesized through Co impregnation and sulfhydryl (-SH) decoration, which can simultaneously uptake Se and accelerate sulfite oxidation efficiently. Meanwhile, the adsorption kinetics and migration mechanism of Se species were revealed through characterization and density functional calculations, with maximum adsorption capacity of 223 mg/g. The inhibition of Se-0 re-emission and poisonous effect of Se on sulfite oxidation was also investigated. Using the findings of this study, the ammonia desulfurization can be improved by enabling purification of the byproduct and lowering the toxicity of effluent by removing toxic pollutants. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

引用

页码：207 / 218

页数：12