Effect of crystal size on zinc stabilization in aluminum-rich ceramic matrix

Tang, Yuanyuan1; Xin, Xiaoye1; Shih, Kaimin2; Wang, Ziyi1

2018-10

10.1007/s10163-018-0765-y

Journal of Material Cycles and Waste Management   影响因子和分区

1438-4957

1611-8227

With aluminum as the predominant element, incineration residues from municipal solid waste and sewage sludge may be reused as precursors for zinc stabilization. As solid-state reactions are influenced by the crystal sizes of the reactants, the aluminum-containing components with different crystal sizes in the incineration residues may affect zinc transformation and immobilization. In this study, Al2O3 was prepared with a variety of crystal sizes to simulate the aluminum-rich incineration residue matrix, and ZnO was mixed with Al2O3 to study the zinc incorporation mechanisms. The crystal sizes of Al2O3 were determined using Rietveld refinement. Quantification results showed that similar to 30% of zinc was incorporated into the ZnAl2O4 spinel when Al2O3 with the largest crystal size was used. However, the zinc transformation was enhanced twofold when the Al2O3 precursor had the smallest crystal size. This study confirmed the potential enhancement of zinc immobilization by nanoscale crystals in simulated aluminum-rich incineration residues. By improving zinc stabilization efficiencies using poorly crystallized aluminum-containing compounds instead of increasing the energy consumption by increasing the sintering temperatures, we can achieve an economic and environmental win-win scenario for the beneficial utilization of incineration residues of municipal solid waste and sewage sludge.

Zinc Crystal size Stabilization Incineration residue Al2O3

SCI ; EI

英语

第一 ; 通讯

Hong Kong Research Grants Council[17212015]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000445759800020

SPRINGER

20183105644012

Alumina ; Aluminum oxide ; Energy utilization ; Grain size and shape ; II-VI semiconductors ; Municipal solid waste ; Rietveld refinement ; Sewage sludge ; Sintering ; Solid state reactions ; Stabilization ; Zinc ; Zinc oxide

Municipal and Industrial Wastes; Waste Treatment and Disposal:452 ; Energy Utilization:525.3 ; Zinc and Alloys:546.3 ; Chemistry:801 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2

Web of Science

1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
2.Univ Hong Kong, Dept Civil Engn, Hong Kong, Hong Kong, Peoples R China

Tang, Yuanyuan,Xin, Xiaoye,Shih, Kaimin,et al. Effect of crystal size on zinc stabilization in aluminum-rich ceramic matrix[J]. Journal of Material Cycles and Waste Management,2018,20(4):2110-2116.

Tang, Yuanyuan,Xin, Xiaoye,Shih, Kaimin,&Wang, Ziyi.(2018).Effect of crystal size on zinc stabilization in aluminum-rich ceramic matrix.Journal of Material Cycles and Waste Management,20(4),2110-2116.

Tang, Yuanyuan,et al."Effect of crystal size on zinc stabilization in aluminum-rich ceramic matrix".Journal of Material Cycles and Waste Management 20.4(2018):2110-2116.