期刊
MATERIALS AND MANUFACTURING PROCESSES
卷 26, 期 6, 页码 813-820出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10426914.2010.508805
关键词
Mullite; Plasma; Recycling; Silica; Treatment
资金
- Department of Science and Technology, Government of India
Transferred arc plasma (TAP) processing could be an economic and time saving processing method for waste treatment and recycling of chemical laboratory solid wastes. In this work, three different waste silica powders derived from chemical laboratories which are adsorbed with catalytic amount of ruthenium, palladium, and ferrocene derivatives are recycled in addition with alumina to form mullite (3Al(2)O(3) center dot 2SiO(2)) by TAP processing technique and as well as in conventional method for comparison. The phase and microstructure formation of the processed samples were analyzed by X-ray diffraction (XRD) pattern and scanning electron microscopy (SEM) images, respectively. The results show that palladium adsorbed silica has significantly enhanced the formation and densification of mullite rather than ruthenium-and ferrocene-adsorbed silica in TAP processing. The SEM images show that the different kinds of microstructures developed in plasma arc processing mullite due to the direction of the plasma arc formation and solidification.
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