Direct processing of cellular ceramics from a single red mud precursor

被引：17

作者：

Lopes, Daniela, V ^{[1
,2
]}

Durana, Eduardo ^{[1
]}

Cesconeto, Francielly R. ^{[1
]}

Almeida, Patricia, V ^{[2
]}

Kovalevsky, Andrei, V ^{[1
]}

Quina, Margarida J. ^{[2
]}

Frade, Jorge R. ^{[1
]}

机构：

[1] Univ Aveiro, CICECO Aveiro Inst Mat, Dept Mat & Ceram Engn, P-3810193 Aveiro, Portugal

[2] Univ Coimbra, CIEPQPF Res Ctr Chem Proc Engn & Forest Prod, Dept Chem Engn, Rua Silvio Lima, P-3030790 Coimbra, Portugal

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 10期

关键词：

Porous ceramics; Waste valorisation; Emulsification; Taguchi method; EMULSIFIED SUSPENSIONS; BAUXITE; NEUTRALIZATION; PERMEABILITY; PARAMETERS; RECOVERY; GELATIN; SYSTEM; IRON;

D O I：

10.1016/j.ceramint.2020.03.244

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The feasibility of recycling red mud waste by its direct transformation into highly-porous cellular ceramics was successfully demonstrated. Ceramic materials with designed cellular porosity were processed by emulsification of red mud suspensions with liquid paraffin. Taguchi method was used to study the effects provided by varying the red mud load in the suspension, gelatine content and emulsion stirring time on the micro structural features of the cellular ceramics. Additional experiments analysed the effects of the organic to suspension ratio and firing temperature. Emulsification of paraffin followed by gelatine consolidation, drying, elimination of the droplets of the discontinuous organic phase and firing, allowed one to design cellular ceramic pieces with open porosity up to 75%, consisting in interconnected cells with adjustable cell size and low resistance to percolation. These results allow one to consider prospective applications of red mud-based cellular ceramics with designed microstructures as highly-porous membranes for the capture of pollutants.

引用

页码：16700 / 16707

页数：8

共 46 条

[1]

Abrantes J.C.C., 2001, ESTEREOLOGIA SOFTWAR

[2] An alternative representation of impedance spectra of ceramics [J].

Abrantes, JCC ;

Labrincha, JA ;

Frade, JR .

MATERIALS RESEARCH BULLETIN, 2000, 35 (05) :727-740

[3]

[Anonymous], 2007, CRC Handbook of Chemistry and Physics, Internet Version

[4] Cellular ceramics by direct foaming of emulsified ceramic powder suspensions [J].

Barg, Suelen ;

Soltmann, Christian ;

Andrade, Miria ;

Koch, Dietmar ;

Grathwohl, Georg .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (09) :2823-2829

[5] New cellular ceramics from high alkane phase emulsified suspensions (HAPES) [J].

Barg, Suelen ;

de Moraes, Elisangela Guzi ;

Koch, Dietmar ;

Grathwohl, Georg .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2009, 29 (12) :2439-2446

[6]

Barsoukov E, 2005, IMPEDANCE SPECTROSCOPY: THEORY, EXPERIMENT, AND APPLICATIONS, 2ND EDITION, pXII

[7] Gas permeability of microcellular ceramic foams [J].

Biasetto, Lisa ;

Colombo, Paolo ;

Innocentini, Murilo D. M. ;

Mullens, Steven .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (10) :3366-3372

[8]

Domingues E., 2019, WATER, V11, P1

[9] Wastewater treatment using a hybrid system combining adsorption, photocatalytic degradation and membrane filtration processes [J].

Ejraei, Ayoub ;

Aroon, Mohammad Ali ;

Saravani, Afshin Ziarati .

JOURNAL OF WATER PROCESS ENGINEERING, 2019, 28 :45-53

[10] Starch as a Pore-forming and Body-forming Agent in Ceramic Technology [J].

Gregorova, Eva ;

Zivcova, Zuzana ;

Pabst, Willi .

STARCH-STARKE, 2009, 61 (09) :495-502

← 1 2 3 4 5 →