Determination and Analysis of Solubility of Na3VO4 in Aqueous NaOH Solutions Containing Na2CO3, NaAlO2, or Na2SiO3 at 298.15-353.15 K

doi:10.1021/acs.jced.0c00511

	Determination and Analysis of Solubility of Na3VO4 in Aqueous NaOH Solutions Containing Na2CO3, NaAlO2, or Na2SiO3 at 298.15-353.15 K
	Meng, Fancheng 1,2; Cao, Lei 1,2; Yang, Huan 1,2; Liu, Yahui 1,2; Wang, Lina 1,2; Chen, Desheng 1,2; Zhao, Hongxin 1,2; Zhen, Yulan 1,2; Wang, Meng 3; Qi, Tao 1,2
刊名	JOURNAL OF CHEMICAL AND ENGINEERING DATA
	2021-04-08
卷号	66 期号:4 页码:1574-1581
ISSN号	0021-9568
DOI	10.1021/acs.jced.0c00511
英文摘要	In a new vanadium extracting process, the effective separation of Na3VO4 from the aqueous NaOH solution containing impurities of Na2CO3, NaAlO2, or Na2SiO3 plays a significant role. The solubility data of NaOH-Na3VO4-H2O system and NaOH-Na2CO3-Na3VO4-H2O system at 298.15, 313.15, and 353.15 K were measured. The Na3VO4 solubility in NaOH solutions containing 30.4 g.L-1 NaAlO2 or Na2SiO3 at 313.15 and 353.15 K were also studied for comparison. Na2CO3 has a strong salting-out effect on Na3VO4 with NaOH molality <7 mol.kg(-1). Moreover, NaAlO2 and Na2SiO3 have a little inhibitory effect on the Na3VO4 solubility, and the effect of NaAlO2 is more significant. The equilibrium solid phases of sodium orthovanadate in the above systems were identified, which mainly presented Na3VO4 center dot 12H(2)O at NaOH molality <10 mol.kg(-1) and Na3VO4 at NaOH molality >10 mol.kg(-1). The determined solubility data and equilibrium solid phases are essential in optimizing the operating parameters for Na3VO4 crystallization from actual NaOH solutions. To balance the crystal purity and vanadium recovery, a strategy has been proposed for the effective separation of Na3VO4 by evaporation/cooling crystallization after decreasing the Na2CO3 concentration.
资助项目	National Key R&D Program of China[2018YFC1900500] ; National Natural Science Foundation of China[51804289] ; National Natural Science Foundation of China[21908231] ; National Natural Science Foundation of China[22078343] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDJ-SSW-JSC021] ; CAS Interdisciplinary Innovation Team ; Special Project for Transformation of Major Technological Achievements in Hebei Province[19044012Z] ; Beijing Municipal Natural Science Foundation[2202253] ; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology[CNMRCUKF1901]
WOS研究方向	Thermodynamics ; Chemistry ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000639039300003
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; CAS Interdisciplinary Innovation Team ; Special Project for Transformation of Major Technological Achievements in Hebei Province ; Beijing Municipal Natural Science Foundation ; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/48499]
专题	中国科学院过程工程研究所
通讯作者	Wang, Lina
作者单位	1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China 3.Hebei Zhongke Tongchuang Titanium & Vanadium Tech, Hengshui 053000, Peoples R China
推荐引用方式 GB/T 7714	Meng, Fancheng,Cao, Lei,Yang, Huan,et al. Determination and Analysis of Solubility of Na3VO4 in Aqueous NaOH Solutions Containing Na2CO3, NaAlO2, or Na2SiO3 at 298.15-353.15 K[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2021,66(4):1574-1581.
APA	Meng, Fancheng.,Cao, Lei.,Yang, Huan.,Liu, Yahui.,Wang, Lina.,...&Qi, Tao.(2021).Determination and Analysis of Solubility of Na3VO4 in Aqueous NaOH Solutions Containing Na2CO3, NaAlO2, or Na2SiO3 at 298.15-353.15 K.JOURNAL OF CHEMICAL AND ENGINEERING DATA,66(4),1574-1581.
MLA	Meng, Fancheng,et al."Determination and Analysis of Solubility of Na3VO4 in Aqueous NaOH Solutions Containing Na2CO3, NaAlO2, or Na2SiO3 at 298.15-353.15 K".JOURNAL OF CHEMICAL AND ENGINEERING DATA 66.4(2021):1574-1581.