Removal of methyl orange and methylene blue from wastewater by magnetic nanocomposites loaded activated carbon synthesised from walnut shell

被引：2

作者：

Anitha, Panneerselvam ^{[1
]}

Ramachandran, Arumugam ^{[2
]}

Sudha, Ramasamy ^{[3
]}

Valarmathi, Nataraj ^{[3
]}

Geetha, Dharamraj ^{[4
]}

机构：

[1] Govt Coll Engn, Ctr Res, Dept Chem, Salem 636011, Tamil Nadu, India

[2] Govt Coll Engn, Dept Chem, Tirunelveli 627007, Tamil Nadu, India

[3] Vivekanandha Coll Arts & Sci Women Autonomous, Dept Chem, Namakkal 637205, Tamil Nadu, India

[4] Vivekanandha Arts & Sci Coll Women, Dept Biochem, Salem 637303, Tamil Nadu, India

来源：

INDIAN JOURNAL OF CHEMICAL TECHNOLOGY | 2024年 / 31卷 / 03期

关键词：

Activated carbon; Adsorption; Dye removal; Magnetic nanocomposite; AQUEOUS-SOLUTION; CADMIUM ADSORPTION; AGRICULTURAL WASTE; ADSORBENT; KINETICS; DYE; DETOXIFICATION; EQUILIBRIUM; PB(II); PEEL;

D O I：

10.56042/ijct.v31i3.7041

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The novel magnetic nanocomposites activated carbon (MWNSC) has been synthesised from activated carbon (AC), produced from walnut shell through pyrolysis method. This adsorbent has been characterized by FTIR, BET, TEM, SEM and EDX analysis techniques. The effects of various adsorption factors such as pH of the dye solution, contact time, and adsorbent dose have been studied. Adsorption isotherms have been employed to test the experimental data, and the results corresponded well to the Langmuir model, with MO and MB having maximal adsorption capacities of 303.30 and 345.70 mg g -1 , respectively. Adsorption kinetics have been studied using pseudo -first -order, pseudo -second -order, Elovich and intraparticle diffusion models, and the experimental results are well -fitted with the pseudo second -order model. According to the dye adsorption's thermodynamics, the process is exothermic, spontaneous, and favourable from a thermodynamic standpoint. The method is applicable to real wastewater samples, with 99 % removal of MO and MB. The outcomes of the present study show that MWNSC is an inexpensive biosorbent that is successfully utilized in removing methyl orange and methylene blue dyes from wastewater.

引用

页码：355 / 368

页数：14

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