INFLUENCE OF IMPURITIES ON DISSOLUTION BEHAVIOR OF SODIUM SULFATE IN COAL CHEMICAL INDUSTRY SALINE WASTEWATER

ZHANG Zhong; ZHAO Di; XU Gaojie; NING Pengge; ZHAO Yuehong; CAO Hongbin

doi:10.13205/j.hjgc.202409015

Volume 42 Issue 9

Sep. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(9): 156-166

ZHANG Zhong, ZHAO Di, XU Gaojie, NING Pengge, ZHAO Yuehong, CAO Hongbin. INFLUENCE OF IMPURITIES ON DISSOLUTION BEHAVIOR OF SODIUM SULFATE IN COAL CHEMICAL INDUSTRY SALINE WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(9): 156-166. doi: 10.13205/j.hjgc.202409015

Citation:

ZHANG Zhong, ZHAO Di, XU Gaojie, NING Pengge, ZHAO Yuehong, CAO Hongbin. INFLUENCE OF IMPURITIES ON DISSOLUTION BEHAVIOR OF SODIUM SULFATE IN COAL CHEMICAL INDUSTRY SALINE WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(9): 156-166. doi: 10.13205/j.hjgc.202409015

Citation:

ZHANG Zhong, ZHAO Di, XU Gaojie, NING Pengge, ZHAO Yuehong, CAO Hongbin. INFLUENCE OF IMPURITIES ON DISSOLUTION BEHAVIOR OF SODIUM SULFATE IN COAL CHEMICAL INDUSTRY SALINE WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(9): 156-166. doi: 10.13205/j.hjgc.202409015

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INFLUENCE OF IMPURITIES ON DISSOLUTION BEHAVIOR OF SODIUM SULFATE IN COAL CHEMICAL INDUSTRY SALINE WASTEWATER

doi: 10.13205/j.hjgc.202409015

1. College of Environmental Science & Engineering, Beijing Forestry University, Beijing 100083, China;
2. Chemistry & Chemical Engineering Date Center, CAS, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received Date: 2024-05-08
Available Online: 2024-12-02

Abstract

Abstract

The study on the influence of typical impurities in saline wastewater on the crystalline properties of sodium sulfate is beneficial for optimizing the sodium sulfate crystallization process and promoting the value-added utilization of sodium sulfate. Taking the sodium sulfate waste impurities system in the coal chemical industry as the research object, this study used OLI and COSMO-RS to investigate the effects of temperature, typical inorganic impurity ions, and organic impurities on the solubility, solvation, and interactions of sodium sulfate. The results indicate that the solubility behavior of sodium sulfate is controlled by the polarity of impurities, the solvation capacity of Na⁺ and SO₄^2-, the concentration of impurities, and the common ion effect, with polarity exerting the strongest influence. Calcium ions (Ca²⁺), ammonium ions (NH₄⁺), potassium ions (K⁺), bicarbonate ions (HCO₃^-), fluoride ions (F^-), and nitrate ions (NO₃^-) are with less polarity than Na⁺ and SO₄^2-, and they promote the crystallization of sodium sulfate. Among these, cations promote the crystallization of sodium sulfate through the common ion effect, while anions promote it through both the common ion effect and weakening the solvation of Na⁺ and SO₄^2-. Magnesium ions (Mg²⁺) and carbonate ions (CO₃^2-) promote the dissolution of sodium sulfate. Magnesium ions enhance the solvation of Na⁺ and SO₄^2-, thus promoting the dissolution of sodium sulfate, while carbonate ions promote the dissolution of sodium sulfate through their strong polarity. Removing Mg²⁺ and CO₃^2- from saline wastewater is a necessary measure to promote the crystallization of sodium sulfate. At low concentrations, organic impurities promote the crystallization of Na₂SO₄ by weakening the interaction between Na⁺ and SO₄^2-. Calcium ions and fluoride ions not only significantly increase the freezing crystallization time of sodium sulfate, but also generate new substances with sodium sulfate. Related theoretical research provides theoretical support for the utilization of sodium sulfate waste salt.
- sodium sulfate,
- organic impurities,
- inorganic impurities,
- dissolution behavior,
- solvation

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References(28)

References

[1]	中华人民共和国生态环境部. 关于印发《危险废物环境管理指南陆上石油天然气开采》等七项危险废物环境管理指南的公告[Z]. 2021.
[2]	刘丽. 现代煤化工含盐废水处理技术进展及对策建议[J]. 内蒙古煤炭经济, 2019, 15: 211.
[3]	张润楠, 范晓晨, 贺明睿, 等. 煤气化废水深度处理与回用研究进展[J]. 化工学报, 2015, 66(9): 3341-3349.
[4]	CUI P, YU Q, YANG S. New water treatment index system toward zero liquid discharge for sustainable coal chemical processes[J]. ACS Sustainable Chem Eng, 2018, 6(1): 1370-1378.
[5]	张笛, 曹宏斌, 赵赫, 等. 工业污染控制发展历程及趋势分析[J]. 环境工程, 2022, 40(1): 1-7 ,206.
[6]	俞德仁, 叶涛, 柏明锁, 等. 一种煤化工副产品硫酸钠制备纯碱系统: CN219823690U[P]. 2023-10-13.
[7]	张旭, 于淼, 陈宋璇, 等. 硫酸钠制纯碱的系统: CN218872168U[P]. 2022-12-08.
[8]	赵诗雅, 刘琪. 通过硫酸钠制备纯碱的方法及其应用: CN115784263A[P]. 2023-03-14.
[9]	LIU J, XU F, YUAN J, et al. High-value conversion of Na₂SO₄ wastewater by a continuous electrodialytic metathesis process: effects of coexisting ions[J]. Journal of Membrane Science, 2020, 615: 118584.
[10]	ZHAO Y, WANG X, YUAN J, et al. An efficient electrodialysis metathesis route to recover concentrated NaOH-NH₄Cl products from simulated ammonia and saline wastewater in coal chemical industry[J]. Separation and Purification Technology, 2022, 301(15): 122042.
[11]	张妍, 刘红雨, 肖远航. 含硫酸钠工业废盐的提纯研究[J]. 天津化工, 2023, 37(5): 116-118.
[12]	苏楠楠. 煤化工高盐废水分质结晶过程研究[D]. 天津:天津大学, 2018.
[13]	杜海. 煤化工高盐废水分质结晶基础研究[D]. 郑州:郑州大学, 2021.
[14]	朱秋楠. 煤化工高盐废水分质提盐基础与结晶工艺研究[D]. 银川:宁夏大学, 2019.
[15]	GE S Y, MA Y L, ZHU L, et al. Study of the solubility, supersolubility, and metastable zone width of ternary system (NaCl+Na₂SO₄+H₂O) containing organic impurity at 333.15 K[J]. J Chem Eng Data, 2019, 64(12):5113-5121.
[16]	宫海燕, 李彩虹, 王佩佩, 等. 杂质对溶液结晶过程的研究进展[J]. 化学与生物工程, 2010, 27(3): 9-12.
[17]	张响飞. Na₂CO₃,Na₂SO₄和NaCl混合物溶解动力学研究[D]. 北京:中国科学院大学, 2018.
[18]	QIAO K, CHEN J, HAN J, et al. Solid-liquid phase equilibrium for the hexamethylenetetramine-NH₄Cl-H₂O system: solubility determination, model correlation and molecular simulation[J]. Chemical Physics Letters, 2023, 816: 140393.
[19]	CHEN Y, YU H, LI Y. Highly efficient and superfast cellulose dissolution by green chloride salts and its dissolution mechanism[J]. ACS Sustainable Chem Eng, 2020, 8(50): 18446-18454.
[20]	ROY S, BOCHAROVA V, STACK A G, et al. Nucleation rate theory for coordination number: elucidating water-mediated formation of a zigzag Na₂SO₄ Morphology[J]. ACS Applied Materials & Interfaces, 2022, 14(47): 53213-53227.
[21]	SHI J, HUANG W, HAN H, et al. Review on treatment technology of salt wastewater in coal chemical industry of China[J]. Desalination, 2020, 493: 114640.
[22]	刘光启, 马连湘, 刘杰, 等. 化学化工物性数据手册(无机卷)[M]. 北京:化学工业出版社, 2002.
[23]	LIU Q Q, LIN G H, ZHOU J, et al. Hydrogen-bond mediated and concentrate-dependent NaHCO₃ crystal morphology in NaHCO₃-Na₂CO₃ aqueous solution: experiments and computer simulations[J]. Chinese Journal of Chemical Engineering, 2023, 55: 49-58.
[24]	SU N N, WANG Y L, XIAO Y, et al. Mechanism of influence of organic impurity on crystallization of sodium sulfate[J]. Ind Eng Chem Res, 2018, 57(5): 1705-1713.
[25]	VAUDEVIRE E, RADMANESH F, KOLKMAN A, et al. Fate and removal of trace pollutants from an anion exchange spent brine during the recovery process of natural organic matter and salts[J]. Water Research, 2019, 154: 34-44.
[26]	LI P Y, LI G N, XIAO W, et al. Na⁺/Mg²⁺ interactions on membrane distillation permeation flux and crystallization performance during high saline solution treatment[J]. Separation and Purification Technology, 2021, 259: 118191.
[27]	KURNIA K A, FERNANDES A M, PINHO S P, et al. Ion speciation: a key for the understanding of the solution properties of ionic liquid mixtures[J]. Physical Chemistry Chemical Physics, 2019, 38(21): 21626.
[28]	LI J B, WENG L P, DENG Y X, et al. NOM-mineral interaction: significance for speciation of cations and anions[J]. Science of the Total Environment, 2022, 820: 153259.