Recent advances in removal of Congo Red dye by adsorption using an industrial waste

被引：224

作者：

Harja, Maria ^{[1
]}

Buema, Gabriela ^{[2
]}

Bucur, Daniel ^{[3
]}

机构：

[1] Gheorghe Asachi Tech Univ Iasi, Fac Chem Engn & Environm Protect, 73 Profdrdoc Dimitrie Mangeron St, Iasi 700050, Romania

[2] Natl Inst Res & Dev Tech Phys, 47 Mangeron Blvd, Iasi 700050, Romania

[3] Univ Life Sci, Fac Agr, Dept Pedotech, 3 Mihail Sadoveanu Alley, Iasi 700490, Romania

来源：

SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期

关键词：

AQUEOUS-SOLUTION; FLY-ASH; ACTIVATED CARBON; METHYL-ORANGE; ISOTHERM; COMPOSITE; ADSORBENT; SINGLE; MECHANISM; NANOFIBER;

D O I：

10.1038/s41598-022-10093-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The Congo Red dye was removed from a simulated textile wastewater solution using fly ash from a local power plant. The characterisation of fly ash was studied in detail by SEM, EDX, XRD, FTIR, BET surface area and TGA techniques. The influence of four parameters (contact time, initial concentration, adsorbent dose, and temperature) was analysed, the results showing that the adsorption capacity depends on these parameters. Thermodynamic and regeneration investigations as well are presented. The fit to pseudo-second-order kinetics models suggests that the removal process is a chemical adsorption. The Langmuir model fitted the experimental data, with a maximum adsorption capacity of 22.12 mg/g. The research is a preliminary case study that highlights that fly ash posed a very good potential as a material for Congo Red dye removal.

引用

页数：18

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