Recovery of vanadium from spent catalysts of sulfuric acid plant by using inorganic and organic acids: Laboratory and semi-pilot tests

被引：79

作者：

Erust, Ceren ^{[1
]}

Akcil, Ata ^{[1
]}

Bedelova, Zyuldyz ^{[1
,2
,3
]}

Anarbekov, Kuanysh ^{[1
,2
,3
]}

Baikonurova, Aliya ^{[3
]}

Tuncuk, Aysenur ^{[1
]}

机构：

[1] Suleyman Demirel Univ, Dept Min Engn, Mineral Proc Div, MMR&R Res Grp, TR-32260 Isparta, Turkey

[2] Natl Ctr Complex Proc Mineral Raw Mat Republ Kaza, Alma Ata, Kazakhstan

[3] Kazakh Natl Tech Univ, 22 Satpaev Str, Alma Ata 050013, Kazakhstan

来源：

WASTE MANAGEMENT | 2016年 / 49卷

关键词：

Leaching; Metal recovery; Spent catalyst; Vanadium; Waste management; METAL RECOVERY; BY-PRODUCTS; PART I; MOLYBDENUM; MANAGEMENT; POTASSIUM; IRON;

D O I：

10.1016/j.wasman.2015.12.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Catalysts are used extensively in industry to purify and upgrade various feeds and to improve process efficiency. These catalysts lose their activity with time. Spent catalysts from a sulfuric acid plant (main elemental composition: 5.71% V2O5, 1.89% Al2O3, 1.17% Fe2O3 and 61.04% SiO2; and the rest constituting several other oxides in traces/minute quantities) were used as a secondary source for vanadium recovery. Experimental studies were conducted by using three different leaching systems (citric acid with hydrogen peroxide, oxalic acid with hydrogen peroxide and sulfuric acid with hydrogen peroxide). The effects of leaching time, temperature, concentration of reagents and solid/liquid (S/L) ratio were investigated. Under optimum conditions (1:25 S/L. ratio, 0.1 M citric acid, 0.1 M hydrogen peroxide, 50 degrees C and 120 min), 95% V was recovered in the presence of hydrogen peroxide in citric acid leaching. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：455 / 461

页数：7

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