Highly efficient adsorption performance of a novel magnetic geopolymer/Fe3O4 composite towards removal of aqueous acid green 16 dye

被引：92

作者：

Rossatto, D. L. ^{[1
]}

Netto, M. S. ^{[1
]}

Jahn, S. L. ^{[1
]}

Mallmann, E. S. ^{[1
]}

Dotto, G. L. ^{[1
]}

Foletto, E. L. ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Chem Engn, BR-97105900 Santa Maria, RS, Brazil

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2020年 / 8卷 / 03期

关键词：

Geopolymer; Magnetite; Composite; Adsorption; Experimental design; FLY-ASH; ALKALI ACTIVATION; LEATHER DYE; ADSORBENT; KINETICS; WATER; CHITOSAN; NANOPARTICLES; METAKAOLIN; ISOTHERMS;

D O I：

10.1016/j.jece.2020.103804

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A novel magnetic geopolymer/Fe3O4 composite (MGP) was prepared from metakaolin, biogenic rice husk silica and magnetite (Fe3O4), having as mesopores-structuring agents hydrogen peroxide and soybean oil. The magnetic property and mesoporosity were confirmed by vibrating sample magnetometer (VSM) and BET isotherms, respectively. An adsorption study of aqueous acid green 16 (AG16) dye onto composite was performed. The parameters adsorbent dosage and initial pH were evaluated by experimental design in order maximize the adsorption efficiency of AG16 dye onto MGP. Through the results, fast adsorption and an equilibrium reached at 30 min were observed. The kinetic data fitted well to the pseudo-second order model. Remarkable sorption capacity of 400 mg g(-1) at 328 K was obtained. Additionally, the composite presented high reusability even after several repeated cycles, indicating that it can be a potential adsorbent towards removal of organic pollutants from liquid effluents.

引用

页数：10

共 63 条

[1]

Alouani M.E. L., 2018, J Mater Environ Sci, V9, P32, DOI [DOI 10.26872/JMES.2018.9.1.5, 10.26872/jmes.2018.9.1.5]

[2] Chemical design of a smart chitosan-polypyrrole-magnetite nanocomposite toward efficient water treatment [J].

Ayad, Mohamad ;

Salahuddin, Nehal ;

Fayed, Aya ;

Bastakoti, Bishnu Prasad ;

Suzuki, Norihiro ;

Yamauchi, Yusuke .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (39) :21812-21819

[3] Adsorption of acid dyes in aqueous solutions by shells of bittim (Pistacia khinjuk Stocks) [J].

Aydin, Haluk ;

Baysal, Gulay .

DESALINATION, 2006, 196 (1-3) :248-259

[4] Biodegradation and decolorization of triphenylmethane dyes by Staphylococcus epidermidis [J].

Ayed, Lamia ;

Chaieb, Kamel ;

Cheref, Abdelkarim ;

Bakhrouf, Amina .

DESALINATION, 2010, 260 (1-3) :137-146

[5] Biodegradation of triphenylmethane dyes [J].

Azmi, W ;

Sani, RK ;

Banerjee, UC .

ENZYME AND MICROBIAL TECHNOLOGY, 1998, 22 (03) :185-191

[6] Preparation of mesoporous geopolymer using metakaolin and rice husk ash as synthesis precursors and its use as potential adsorbent to remove organic dye from aqueous solutions [J].

Barbosa, Tuany Ramos ;

Foletto, Edson Luiz ;

Dotto, Guilherme Luiz ;

Jahn, Sergio Luiz .

CERAMICS INTERNATIONAL, 2018, 44 (01) :416-423

[7]

Bonilla-Petriciolet A., 2019, Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, P1, DOI [DOI 10.1016/B978-0-12-409547-2.14390-2, 10.1016/B978-0-12-4095472.14390-2, DOI 10.1016/B978-0-12-4095472.14390-2, 10.1016/B978-0-12-409547-2.14390-2]

[8] Adsorption of gases in multimolecular layers [J].

Brunauer, S ;

Emmett, PH ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319

[9] Alkali activation of fly ashes.: Part 1:: Effect of curing conditions on the carbonation of the reaction products [J].

Criado, A ;

Palomo, A ;

Fernández-Jiménez, A .

FUEL, 2005, 84 (16) :2048-2054

[10] Fe3O4@SiO2 Core/Shell Nanoparticles: The Silica Coating Regulations with a Single Core for Different Core Sizes and Shell Thicknesses [J].

Ding, H. L. ;

Zhang, Y. X. ;

Wang, S. ;

Xu, J. M. ;

Xu, S. C. ;

Li, G. H. .

CHEMISTRY OF MATERIALS, 2012, 24 (23) :4572-4580

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