Effect of Aluminium Powder on Kaolin-Based Geopolymer Characteristic and Removal of Cu2+

被引：37

作者：

Ariffin, Nurliyana ^{[1
]}

Abdullah, Mohd Mustafa Al Bakri ^{[1
,2
]}

Postawa, Przemyslaw ^{[3
]}

Zamree Abd Rahim, Shayfull ^{[1
,4
]}

Mohd Arif Zainol, Mohd Remy Rozainy ^{[5
]}

Putra Jaya, Ramadhansyah ^{[6
]}

Sliwa, Agata ^{[7
]}

Omar, Mohd Firdaus ^{[2
]}

Wyslocki, Jerzy J. ^{[3
]}

Bloch, Katarzyna ^{[3
]}

Nabialek, Marcin ^{[3
]}

机构：

[1] Univ Malaysia Perlis, Ctr Excellence Geopolymer & Green Technol CEGeoGT, Perlis 01000, Malaysia

[2] Univ Malaysia Perlis, Fac Chem Engn Technol, Perlis 01000, Malaysia

[3] Czestochowa Tech Univ, Fac Prod Engn & Mat Technol, Dept Phys, PL-42201 Czestochowa, Poland

[4] Univ Malaysia Perlis, Fac Mech Engn Technol, Perlis 01000, Malaysia

[5] Univ Sains Malaysia USM, Sch Civil Engn, Engn Campus, George Town 14300, Malaysia

[6] Univ Malaysia Pahang UMP, Coll Engn, Dept Civil Engn, Pahang 26300, Malaysia

[7] Silesian Tech Univ, Div Mat Proc Technol & Comp Tech Mat Sci, PL-44100 Gliwice, Poland

来源：

MATERIALS | 2021年 / 14卷 / 04期

关键词：

geopolymer; adsorbent; copper; foaming agent; ASH-BASED GEOPOLYMER; HEAVY-METAL ADSORPTION; FLY-ASH; AQUEOUS-SOLUTION; WASTE-WATER; COPPER; IONS; IMPACT; PB2+;

D O I：

10.3390/ma14040814

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This current work focuses on the synthesis of geopolymer-based adsorbent which uses kaolin as a source material, mixed with alkali solution consisting of 10 M NaOH and Na2SiO3 as well as aluminium powder as a foaming agent. The experimental range for the aluminium powder was between 0.6, 0.8, 1.0 and 1.2wt%. The structure, properties and characterization of the geopolymer were examined using X-Ray Diffraction (XRD), Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Adsorption capacity and porosity were analysed based on various percentages of aluminium powder added. The results indicate that the use of aluminium powder exhibited a better pore size distribution and higher porosity, suggesting a better heavy metal removal. The maximum adsorption capacity of Cu2+ approached approximately 98%. The findings indicate that 0.8% aluminium powder was the optimal aluminium powder content for geopolymer adsorbent. The removal efficiency was affected by pH, adsorbent dosage and contact time. The optimum removal capacity of Cu2+ was obtained at pH 6 with 1.5 g geopolymer adsorbent and 4 h contact time. Therefore, it can be concluded that the increase in porosity increases the adsorption of Cu2+.

引用

页码：1 / 19

页数：18

共 71 条

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