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LAPSE:2024.1271

Adsorption Performance and Mechanism of Fe(II) Adsorption in Abandoned Mine Water of Nonstick Coal

Zhuolin Shi, Chengle Wu, Furong Wang, Jialong Sun, Yingnan Xu, Jinhang Shen

June 21, 2024

Abstract
Aiming at the problem of the low reuse rate of mine water due to the high content of heavy metals in mine water, in this research, the microcharacterization means of EDX, XRD, BET, SEM, and FT-IR were used to characterize the nonstick coal in a mine in western China. The effects of solid−liquid ratio, solution pH, solution temperature, adsorption time, and initial concentration of the solution on the adsorption of Fe(II) by the nonstick coal were analyzed. The adsorption performance of nonstick coal on adsorbed Fe(II) was analyzed under different influencing factors. The results showed that the adsorption capacity and unit removal rate of the coal samples gradually decreased with the increase in the solid−liquid ratio; the adsorption amount increased with the increase in pH in an “S” shape, and the adsorption effect was better in the range of pH = 5~7; and the adsorption amount increased linearly with the temperature. The quasi-secondary kinetic model and Langmuir model could fit the adsorption kinetic curve and isothermal adsorption curve better, which indicated that the adsorption of Fe(II) by the nonstick coal was dominated by the chemical adsorption of the monomolecular layer. The quantitative analysis of the FT-IR results showed that the adsorption of Fe(II) was mainly by complexation with -OH detached from the coal samples to produce precipitation.

Record ID

LAPSE:2024.1271

Keywords

adsorption mechanism, adsorption performance, heavy metal ion, mine water, nonstick coal

Subject

Energy Systems

Suggested Citation

Shi Z, Wu C, Wang F, Sun J, Xu Y, Shen J. Adsorption Performance and Mechanism of Fe(II) Adsorption in Abandoned Mine Water of Nonstick Coal. (2024). LAPSE:2024.1271

Author Affiliations

Shi Z: Key Laboratory of Deep Coal Resource Mining, Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221008, China; School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Wu C: Key Laboratory of Deep Coal Resource Mining, Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221008, China; School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Wang F: Key Laboratory of Deep Coal Resource Mining, Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221008, China; School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Sun J: Key Laboratory of Deep Coal Resource Mining, Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221008, China; School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Xu Y: Key Laboratory of Deep Coal Resource Mining, Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221008, China; School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Shen J: Key Laboratory of Deep Coal Resource Mining, Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221008, China; School of Mines, China University of Mining and Technology, Xuzhou 221116, China

Journal Name

Processes

Volume

Issue

First Page

188

Year

2024

Publication Date

2024-01-15

DOI:

https://doi.org/10.3390/pr12010188