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Phase Diagram for the Na2SO4-NaOH-H2O System and Na2SO4 Solubility in Sodium Aluminate Solution with Caustic Ratios of 12 and 15 at 80 degrees C
Ding, Aijuan1,2; Wang, Yuejiao1; Ma, Shuhua1; Zheng, Shili1; Guo, Fen2
2013-04-01
Source PublicationJOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume58Issue:4Pages:964-968
AbstractThe phase diagram for the Na2SO4-NaOH-H2O system and solubility data for Na2SO4 in sodium aluminate solution with Na2O to Al2O3 ratios (caustic ratios) of 12 and 15 were studied in the full alkali concentration region at 80 degrees C. The contents of Al and Na in the solution were analyzed by means of inductively coupled atomic plasma emission spectrometry (ICP-OES). The sulfur content was determined using ion chromatography (IC) and the ethylenediaminetetraacetic acid (EDTA) volumetric method. The phases of the equilibrium solids were identified via X-ray diffraction (XRD) as well as Schreinemaker's method. The results showed that the Na2SO4 solubility declines as the concentration of NaOH in the ternary system increases. At a NaOH concentration exceeding 32.96 % (mass percent), the Na2SO4 solubility is lower than 1.13 %. For this system, the corresponding equilibrium solid phase was identified as anhydrous sodium sulfate (Na2SO4) and sodium hydroxide (NaOH) The Na2SO4 solubility in the quaternary system approximates the values obtained in the Na2SO4-NaOH-H2O system. At NaOH concentrations higher than 30.68 % and 30.76 % the Na2SO4 solubility values in the sodium aluminate solution with caustic ratios of 12 and 15 are lower than 1.03 % and 1.05 %, respectively.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
Language英语
WOS KeywordHYDROXIDE SOLUTIONS ; WATER
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000317553600019
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13490
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, Sch Chem Engn, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Ding, Aijuan,Wang, Yuejiao,Ma, Shuhua,et al. Phase Diagram for the Na2SO4-NaOH-H2O System and Na2SO4 Solubility in Sodium Aluminate Solution with Caustic Ratios of 12 and 15 at 80 degrees C[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2013,58(4):964-968.
APA Ding, Aijuan,Wang, Yuejiao,Ma, Shuhua,Zheng, Shili,&Guo, Fen.(2013).Phase Diagram for the Na2SO4-NaOH-H2O System and Na2SO4 Solubility in Sodium Aluminate Solution with Caustic Ratios of 12 and 15 at 80 degrees C.JOURNAL OF CHEMICAL AND ENGINEERING DATA,58(4),964-968.
MLA Ding, Aijuan,et al."Phase Diagram for the Na2SO4-NaOH-H2O System and Na2SO4 Solubility in Sodium Aluminate Solution with Caustic Ratios of 12 and 15 at 80 degrees C".JOURNAL OF CHEMICAL AND ENGINEERING DATA 58.4(2013):964-968.
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