Mechanisms and adsorption capacities of ball milled biomass fly ash/ biochar composites for the adsorption of methylene blue dye from aqueous solution
文献类型： 外文期刊
作者： Li, Huaiyan 1 ; Kong, Jie 1 ; Zhang, Haiting 1 ; Gao, Jiale 1 ; Fang, Yan 1 ; Shi, Jiaqi 1 ; Ge, Tao 2 ; Fang, Ting 3 ; Shi, Yanhong 1 ; Zhang, Rong 1 ; Zhang, Ningyuan 4 ; Dong, Xinju 5 ; Zhang, Yunhua 1 ; Li, Hui 1 ;
作者机构： 1.Anhui Agr Univ, Coll Resources & Environm, Anhui Prov Key Lab Farmland Ecol Conservat & Pollu, Hefei 230026, Peoples R China
2.Anhui Res Inst Geol Expt, Hefei 230001, Peoples R China
3.Anhui Acad Agr Sci, Fisheries Res Inst, Key Lab Freshwater Aquaculture & Enhancement Anhui, Hefei 230031, Peoples R China
4.Hefei NO1 High Sch, Hefei 230601, Peoples R China
5.Univ Louisville, Dept Chem, Louisville, KY 40292 USA
关键词： Ball -milled biochars; Adsorption capacity; Methylene blue; Adsorption mechanism; Biochar composite
期刊名称：JOURNAL OF WATER PROCESS ENGINEERING （ 影响因子：7.0； 五年影响因子：6.7 ）
ISSN： 2214-7144
年卷期： 2023 年 53 卷
页码：
收录情况： SCI
摘要： In this study, the biomass fly ash/biochar composite (BFA-Biochar) was effectively prepared using wheat straw and biomass fly ash by eco-friendly ball-milling method. The BFA-Biochar was characterized by scanning elec-tron microscope (SEM-EDS), Brunauer-Emmett-Teller (BET) surface area, Fourier transform infrared spectros-copy (FTIR) analysis, X-Ray diffraction (XRD) analysis and X-ray photoelectron spectroscopy (XPS). The methylene blue (MB) adsorption capacity of BFA-Biochar was considerably enhanced (Langmuir Qmax of 854.75 mg/g at 318 K), and showed high adsorption performance during wide pH value (pH 4-10). In addition, the MB adsorption capacity of BM-Biochar was two folds higher than raw biochar. It was found that the Pseudo-second -order adsorption kinetics and Freundlich isotherm model accurately described the adsorption process. Thermo-dynamical parameters (Delta Go, Delta Ho and Delta So) indicated the spontaneous and endothermic nature of the MB adsorption process. The increased electronic attraction and surface function were the main mechanisms of MB adsorption on BFA-Biochar. Therefore, BFA-Biochar can be used as environmentally friendly and effective ad-sorbents for MB dye removal from aqueous solutions.
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