Mechanochemical processing of molybdenum and vanadium sulfides for metal recovery from spent catalysts wastes

被引：35
|
作者：
Li, Zhao [1 ]
Chen, Min [1 ]
Zhang, Qiwu [1 ]
Liu, Xinzhong [2 ]
Saito, Fumio [3 ]
机构：
[1] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China
[2] Fujian Univ Technol, Coll Ecol Environm & Urban Construct, Fuzhou 350118, Peoples R China
[3] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
来源：
WASTE MANAGEMENT | 2017年 / 60卷
关键词：
Recycling; Spent catalysts wastes; Sulfide; Molybdate and vanadate; Mechanochemical; PRINTED-CIRCUIT BOARDS; TUBE FUNNEL GLASS; HYDRODESULFURIZATION CATALYST; HDS CATALYST; COPPER; LEAD; PRECIPITATION; EXTRACTION; SULFUR; ASH;
D O I：
10.1016/j.wasman.2016.06.035
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This work describes the mechanochemical transformations of molybdenum and vanadium sulfides into corresponding molybdate and vanadate, to serve as a new environment-friendly approach for processing hazardous spent hydrodesulphurization (HDS) catalysts solid waste to achieve an easy recovery of not only molybdenum and vanadium but also nickel and cobalt. Co-grinding the molybdenum and vanadium sulfides with oxidants and sodium carbonate stimulates solid-state reactions without any heating aid to form metal molybdates and vanadates. The reactions proceed with an increase in grinding time and were enhanced by using more sodium carbonate and stronger oxidant. The necessary conditions for the successful transformation can be explained on the basis of thermodynamic analyses, namely a negative change in Gibbs free energy. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：734 / 738
页数：5
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