Diopside-based glass-ceramics from MSW fly ash and bottom ash

Qian, Guangren; Song, Yu; Zhang, Cangang; Xia, Yuqin; Zhang, Houhu; Chui, Pengfei

doi:10.1016/j.wasman.2005.12.009

Cited by 55 publications

(26 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The final materials could be used as a construction material with promising applications Hernández-Crespo and Rincó n (2001) Diopside-based glass-ceramics FA Diopside-based glass-ceramics can be produced by combining MSWI fly ash with SiO 2 , MgO and Al 2 O 3 or bottom ash as conditioner of the chemical compositions and TiO 2 as the nucleation agent. The method involves melting at 1500°C for 30 min, nucleating at 730°C for 90 min, and crystallization at 880°C for 10 h. The material has strong fixing capacity for Pb, Cr and Cd Qian et al (2006b) is unlikely to be a good solution due to the high quantities of soluble salts. Thermal treatments can produce a material that is environmentally stable, and may be further used for producing glass-ceramics; -the production of lightweight aggregates by incorporating APC residues with natural clays is under investigation, and results have so far been promising.…”

Section: Discussionmentioning

confidence: 99%

Treatment and use of air pollution control residues from MSW incineration: An overview

Bordado²,

2008

View full text Add to dashboard Cite

This work reviews strategies for the management of municipal solid waste incineration (MSWI) residues, particularly solid particles collected from flue gases. These tiny particles may be retained by different equipment, with or without additives (lime, activated carbon, etc.), and depending on the different possible combinations, their properties may vary. In industrial plants, the most commonly used equipment for heat recovery and the cleaning of gas emissions are: heat recovery devices (boiler, superheater and economiser); dry, semidry or wet scrubbers; electrostatic precipitators; bag filters; fabric filters, and cyclones. In accordance with the stringent regulations in force in developed countries, these residues are considered hazardous, and therefore must be treated before being disposed of in landfills. Nowadays, research is being conducted into specific applications for these residues in order to prevent landfill practices. There are basically two possible ways of handling these residues: landfill after adequate treatment or recycling as a secondary material. The different types of treatment may be grouped into three categories: separation processes, solidification/stabilization, and thermal methods. These residues generally have limited applications, mainly due to the fact that they tend to contain large quantities of soluble salts (NaCl, KCl, calcium compounds), significant amounts of toxic heavy metals (Pb, Zn, Cr, Cu, Ni, Cd) in forms that may easily leach out, and trace quantities of very toxic organic compounds (dioxin, furans). The most promising materials for recycling this residue are ceramics and glass-ceramic materials.The main purpose of the present paper is to review the published literature in this field. A range of studies have been summarized in a series of tables focusing upon management strategies used in various countries, waste composition, treatment processes and possible applications.

show abstract

Section: Discussionmentioning

confidence: 99%

Treatment and use of air pollution control residues from MSW incineration: An overview

Bordado²,

2008

View full text Add to dashboard Cite

show abstract

“…Some studies integrate different types of treatments by combining separation, S/S and or thermal methods [19][20][21]. On the other hand, the utilization of incineration residues has been also considered under the concept of sustainability [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Characterization of air pollution control residues produced in a municipal solid waste incinerator in Portugal

Quina

Santos²,

Bordado

et al. 2008

Journal of Hazardous Materials

View full text Add to dashboard Cite

This study is mainly related with the physical and chemical characterization of a solid waste, produced in a municipal solid waste (MSW) incineration process, which is usually referred as air pollution control (APC) residue. The moisture content, loss on ignition (LOI), particle size distribution, density, porosity, specific surface area and morphology were the physical properties addressed here. At the chemical level, total elemental content (TC), total availability (TA) and the leaching behaviour with compliance tests were determined, as well as the acid neutralization capacity (ANC). The main mineralogical crystalline phases were identified, and the thermal behaviour of the APC residues is also shown. The experimental work involves several techniques such as laser diffraction spectrometry, mercury porosimetry, helium pycnometry, gas adsorption, flame atomic absorption spectrometry (FAAS), ion chromatography, scanning electron microscopy (SEM), X-ray fluorescence (XRF), X-ray diffraction (XRD) and simultaneous thermal analysis (STA). The results point out that the APC residues do not comply with regulations in force at the developed countries, and therefore the waste should be considered hazardous. Among the considered heavy metals, lead, zinc and chromium were identified as the most problematic ones, and their total elemental quantities are similar for several samples colleted in an industrial plant at different times. Moreover, the high amount of soluble salts (NaCl, KCl, calcium compounds) may constitute a major problem and should be taken into account for all management strategies. The solubility in water is very high (more than 24% for a solid/liquid ratio of 10) and thus the possible utilizations of this residue are very limited, creating difficulties also in the ordinary treatments, such as in solidification/stabilization with binders.

show abstract

“…1b. Andesine, augite, and diopside are common phases for y ash based glass-ceramics [7,8]. tends to reduce glass transition and crystallization temperatures [9].…”

Section: Resultsmentioning

confidence: 99%

Glass and Glass-Ceramics Produced from Fly Ash and Boron Waste

et al. 2014

View full text Add to dashboard Cite

In the current study, the e ect of boron waste addition on some properties of y ash based glass and glass--ceramics were investigated. The powder compositions including 10, 30, and 50 wt% boron waste was prepared. All the investigated compositions were melted at 1500 • C by using electrical furnaces. Melting structures were cast into the graphite mold. Thus, y ash-boron waste based glass materials were produced. To transform the glass--ceramic, crystallization process was performed. Crystallization and glass-transition temperatures were determined by di erential thermal analysis. Highly dense and crystalline materials, predominantly composed of diopside and augite together with tincalconite and residual glassy phase, were detected by X-ray di raction analysis after heat treatment at 800, 900, and 1000 • C for 1 h. For the glass and glass-ceramic samples, mechanical tests such as hardness and fracture toughness were realized. A boron waste addition has a positive e ect on the hardness of the specimens unlike the fracture toughness results. Furthermore, produced glass-ceramic materials were characterized via scanning electron microscopy.

show abstract

Diopside-based glass-ceramics from MSW fly ash and bottom ash

Cited by 55 publications

References 9 publications

Treatment and use of air pollution control residues from MSW incineration: An overview

Treatment and use of air pollution control residues from MSW incineration: An overview

Characterization of air pollution control residues produced in a municipal solid waste incinerator in Portugal

Glass and Glass-Ceramics Produced from Fly Ash and Boron Waste

Contact Info

Product

Resources

About