Research on the enhancement effect of ultrasonic field combined with monoclinic FeS on arsenic removal behavior

IF 3.8 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-09 DOI:10.1016/j.cep.2025.110266

Baoxin Liu , Qingfeng Dong , Jing Li , Zhanqing Lu , Guang Fu , Junchang Liu , Te Zhang

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引用次数: 0

Abstract

Arsenic is a toxic element in industrial wastewater. The removal of arsenic by sulfide method has been a prominent research topic in the academic community. In this paper, arsenic was removed from arsenic-containing wastewater by ultrasound intensification combined with monoclinic FeS. This method avoids the common problems of H₂S gas spillage and inefficiency in the sulfide method, and has the advantages of being clean and efficient. The effects of S/As molar ratio, initial temperature, reaction time and ultrasonic power on arsenic removal were studied. Under the optimum condition, the arsenic concentration was reduced from 1889 mg/L to 0.32 mg/L, and the arsenic removal rate reached 99.98 %. The precipitation after arsenic removal was characterized by X-ray diffraction (XRD), Scanning electron microscope-energy dispersive spectrometry (SEM-EDS), X-ray fluorescence spectrum analysis method (XRF) and X-ray photoelectron spectroscopy (XPS) to analyze the precipitation phase, surface morphology, element content and chemical composition. A high-speed camera was used to observe the effect of ultrasound on the kinematic behavior of monoclinic FeS.

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来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.