Research on Efficient Chlorine Removal via the Synergistic Action of Sulfite and Copper Ions

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

JOM Pub Date : 2025-06-26 DOI:10.1007/s11837-025-07534-5

Baoxin Liu, XiaoQian Che, WanTao Ning, Jing Li, ZhanQing Lu

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Abstract

Chlorine is a common harmful element in industrial wastewater, characterized by its high water solubility and non-biodegradability. Removing chloride ions from wastewater is a challenging task. This study explores the mechanism of removing chloride ions using sulfite and copper ions together. The reaction kinetics and free radicals involved were also studied in detail. Under optimal conditions, chloride ion concentration dropped from 3545 to 197.09 mg/L, achieving a 94.44% removal rate. The removal process follows first-order and second-order kinetic equations, with activation energies of 22.29 kJ/mol and 69.11 kJ/mol, respectively. The dechlorination slag was analyzed using XRD, SEM-EDS, and XPS to determine its composition, morphology, and valence states. Free radicals in the sodium sulfite solution were identified by ESR spectroscopy. The movement of the reaction system was observed using a high-speed camera. Based on thermodynamic data and changes in ion concentration, the mechanism of chloride ion removal using sodium sulfite and copper sulfate was elucidated.

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亚硫酸盐与铜离子协同高效除氯的研究

氯是工业废水中常见的有害元素，具有高水溶性和不可生物降解性的特点。从废水中去除氯离子是一项具有挑战性的任务。本研究探讨了亚硫酸盐与铜离子共同去除氯离子的机理。并对反应动力学和参与的自由基进行了详细研究。在最优条件下，氯离子浓度由3545 mg/L降至197.09 mg/L，去除率达94.44%。脱除过程符合一阶和二阶动力学方程，活化能分别为22.29 kJ/mol和69.11 kJ/mol。采用XRD、SEM-EDS和XPS对脱氯渣进行了分析，确定了脱氯渣的组成、形貌和价态。用ESR光谱法对亚硫酸钠溶液中的自由基进行了鉴定。用高速摄像机观察了反应体系的运动。根据热力学数据和离子浓度的变化，阐述了亚硫酸钠和硫酸铜去除氯离子的机理。

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来源期刊

JOM 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.80%

发文量

540

审稿时长

2.8 months

期刊介绍： JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.