Green Preparation of Functionalized Porous Carbon Materials and Their Application in Water Pollution Control
1.College of Geography and Environmental Sciences, Northwest Normal University, Lanzhou 730070, China
2.Key Laboratory of Oasis Resources, Environment and Sustainable Development in Gansu Province, Lanzhou 730070, China
3.Lanzhou Customs Technology Center, Lanzhou 730010, China
4.College of Earth and Environment Sciences, Lanzhou University, Lanzhou 730000, China
5.Liangdang Qin Xiangyi Rose Biotechnology Co., LTD., Longnan 742400, China
Received date: 2024-03-19
Revised date: 2024-04-19
Online published: 2025-07-08
Functionalized porous carbon materials (PCMs) were prepared by calcining rose pomace as raw material and KOH as activator at high temperature in a resistance furnace at 500 ℃ to investigate the adsorption performance of PCMs for the removal of methylene blue in water.The parameters for the preparation of PCMs were impregnation ratio of 1:1, impregnation time of 4 h, and activation time of 50 min.The PCMs were characterized by scanning electron microscope, Fourier transform infrared spectroscopy spectrometer, and pore size analyser. Characterised by scanning electron microscope, Fourier transform infrared spectrometer and pore size analyser, the PCMs were characterised by the presence of a variety of functional groups on the surface, the specific surface area of 285.112 m²/g, the average pore size of 4.2 nm, the total pore volume of 0.1589 cm³/g, and the percentage of mesopores was 54.05%. Taking the removal rate of methylene blue in printing and dyeing wastewater as an index, the preferred results of one-way experiment were: the dosage of PCMs was 0.15 g, the initial concentration of methylene blue was 80 mg/L, the initial solution pH=11, and the adsorption time was 4 h, under which the removal rate of methylene blue by PCMs could be up to 99.52%; and the optimal adsorption conditions of PCMs obtained from the response surface experiment were as follows: the PCMs The optimal adsorption conditions for PCMs were: PCMs dosage of 0.153 g, initial concentration of methylene blue of 64.35 mg/L, and pH=10.93, which predicted that the removal rate of methylene blue could reach 100%. Kinetic analysis showed that the adsorption of PCMs on methylene blue solution conformed to the quasi-secondary kinetic model (R2=0.9564), and the adsorption isotherm was well fitted by Freundlich (R2=0.9580).
YU Yali , QU Deye, LEI Chunni, WANG Bo, DONG Weiqiang, XU Jixiong
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Green
Preparation of Functionalized Porous Carbon Materials and Their Application in
Water Pollution Control[J]. Science & Technology Review, 0
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