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| Citation: |
LIU Wengang, LI Zhiming, WU Guanda, PENG Xiangyu, LIU Ruizhe, LIU Bo, CHENG Hai. Effect of High Temperature Roasting on Methylene Blue Adsorption of Serpentine Tailings[J]. Conservation and Utilization of Mineral Resources, 2021, 41(3): 89-93. DOI: 10.13779/j.cnki.issn1001-0076.2021.03.013
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Serpentine is a magnesium-rich silicate mineral with large specific surface area, natural convoluted and rich pore structure, which can be used as an excellent adsorption material. In order to realize the comprehensive utilization of serpentine resources, serpentine tailings roasted by high temperature was used as an adsorbent on Methylene blue in aqueous. The results indicated that, compared with the original ore, the roasted serpentine tailings had a better adsorption effect on Methylene blue, with a saturation adsorption capacity of about 11.27 mg/g. The adsorption rate of Methylene blue increased with the increase of tailings dosage and adsorption time, and the best adsorption effect was achieved under neutral and alkaline conditions. The adsorption process of Methylene blue by roasted serpentine tailings was in accordance with the pseudo second order kinetic model and Langmuir adsorption isotherm model, and the adsorption process belongs to monolayer chemisorption. Based on the above study, high temperature roasting facilitates the adsorption of Methylene blue on serpentine tailings, which can promote the comprehensive utilization of serpentine tailings.
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