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- Title
Preparation of Calcium-Based Coal Gangue Based on Response Surface Method and its Removal of Dyes.
- Authors
Yang, Zhenhua; Liu, Longkang; Dong, Yanrong; Wang, Yihan; Shao, Junli; Zhao, Zilong; Zhai, Hongyu
- Abstract
With the continuous development of the textile industry, a large amount of dye wastewater is continuously produced. Dye wastewater readily causes allergic reactions and cancer risks, which seriously threaten the health of aquatic organisms and humans. Aiming at the pollution problem of dye wastewater, the preparation conditions of calcium-based coal gangue were optimized by using coal gangue and CaCl2 as materials. Based on the response surface test, the removal efficiency of methylene blue (MB), malachite green (MG), crystal violet (CV), and methyl violet (MV) dyes was taken as the target. The optimal preparation parameters of calcium-based coal gangue were obtained by response surface method: mcalcium chloride:mcoal gangue = 2.5 g:5 g, ultrasonic water bath time was 25 min, and stirring time was 686 min. The removal rates of MB, MG, CV, and MV by calcium-based coal gangue prepared under these conditions were 100%, 99%, 95%, and 100%, respectively, showing that the prepared calcium-based coal gangue is a good dye adsorbent. This study provides a new idea for the sustainable treatment of dye wastewater, provides a new way for the utilization of coal gangue resources, and lays a good theoretical foundation for the popularization and application of this technology.
- Subjects
SUSTAINABILITY; MALACHITE green; WASTEWATER treatment; GENTIAN violet; COAL preparation; ALLERGIES; METHYLENE blue
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2024, Vol 76, Issue 9, p5376
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-024-06747-4