Vitrified galvanic waste chemical stability

Silva, A.C.; Mello-Castanho, Sonia Regina Homem de

doi:10.1016/j.jeurceramsoc.2006.04.110

Cited by 23 publications

(12 citation statements)

References 15 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detection of Si can be obtained at the range of 400 cm -1 -580 cm -1 of the wavenumbers. This is similar to the study of Silva and Mello-Castanho (2007), who noted that 460 cm -1 wavenumber represents the Si-O, in similar range for the detection of Si. Thus, it can be associated with the Si bonds and other elements that elements have been transformed to oxide formation when the atoms of Si bound with oxygen, thereby generating oxide formation.…”

Section: Comparison Of Functional Groups In Resin and Final Residuesupporting

confidence: 90%

See 1 more Smart Citation

Volatile Organic Compounds (VOCs) Distribution from PCB Waste and Vitrification by Reacting with Flux Agents

Sanito

You

Yang

et al. 2022

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

Resin, the part of printed circuit board (PCB) waste, consists of harmful elements and volatile organic compounds (VOCs) and can cause pollution, but it can also be potentially treated through vitrification. Hence, the purpose of this study is to investigate the distribution of VOCs and analyze the effects of different flux agent types, pyrolysis duration, flux agent ratio, and effect of different carrier gases to vitrify resin waste in an atmospheric-pressure microwave plasma reactor. The resins to the flux agents -shell powder, limestone and quartz sand ratio of 50:50 and 25:75 gave the best results for the vitrification compared to the ratio of 75:25 and control (absence of flux agent). Furthermore, the crystalline structures of CaCO3 and SiO 2 dominated the final residue, and this confirmed the vitrification of the resin. Flux agents also can reduce the distribution of propylene and benzene from the plasma pyrolysis. A longer duration of the pyrolysis, a higher flux agent ratio and flux agent types can be recommended for plasma pyrolysis applications even though they have no significant impact on the inertization of the elements statistically. Shell powder is thus suggested as a cost-less flux agent which can create vitrification and inertization of the contaminants from resin in plasma discharges.

show abstract

Section: Comparison Of Functional Groups In Resin and Final Residuesupporting

confidence: 90%

“…The strong bands were identified at the wavenumbers ranging from 400-580 cm -1 with the stretching vibration types. The 460 cm -1 refers to the silica glass structure (Si-O) bonding (Silva and Mello-Castanho, 2007). This stretching appears because the fuse of quartz sand in the materials.…”

Section: Comparison Of Functional Groups In Resin and Final Residuementioning

confidence: 99%

Volatile Organic Compounds (VOCs) Distribution from PCB Waste and Vitrification by Reacting with Flux Agents

Sanito

You

Yang

et al. 2022

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

show abstract

“…High carbon content causes high Redox state of the glass, which may cause a blockage in the nozzle of the melter during vitrification, erosion of the refractory material of the melter, or difficulties in controlling its temperature [9]. High sulfur content in the glass reduces the number of bridging oxygen (n) in the structural unit of silica (Q n ) and produces sodium sulfate (Na 2 SO 4 ) as a covering layer on the molten glass [10]. Sodium sulfate is a good heat conductor, which causes difficulties in controlling the temperature of the melter; its good water solubility also makes the final glass less chemically durable.…”

Section: Sulfur Content Of Iexmentioning

confidence: 99%

Thermal Analysis and Immobilisation of Spent Ion Exchange Resin in Borosilicate Glass

Hamodi¹,

Papadopoulou²,

Lowe³

et al. 2012

NJGC

View full text Add to dashboard Cite

The underground disposal of waste arising from the nuclear industry needs constant evaluation in order to improve upon it through minimizing the volume and cost by reducing the amount of glass used without compromising the safety of any leakage from the radioactive waste form. The immobilization of the spent resin (NRW-40) in borosilicate glass was investigated to meet the acceptance criteria for disposal of nuclear waste. The organic mixed bed resin in granular form was used as a waste target. The analysis of surrogate resin doped with radioactive and non-radioactive cesium (Cs) and cobalt (Co) was carried out to investigate their thermal and chemical properties and their compatibility with an alkaline borosilicate glass. The thermal analysis indicates that the structural damage caused by 1 mSv gamma radiation to the radioactive resin has altered its properties in comparison with the non-radioactive resin, same amount of cesium (8.88 wt%) and cobalt (1.88 wt%) were used in both resins. The immobilization of residue shows that the excess sulfur in the residue caused phase crystallization in the final glass matrix. It was found that the volatilization of Cs-137 and Co-60 from the successful radioactive resin-glass matrix (HG-3-IER-500) were more than that in the non-radioactive resin-glass matrix (HG-3-IEX-500). The study demonstrates comprehensive experimental and analytical works and shows that it is possible to minimise the volume of the waste while keeping the required safety levels, however further research needs to be carried out in this area

show abstract

“…It showed characteristic very low pH, high arsenic ion content, and other harmful ions. The existing waste acid treatment in industry (Hassan et al, 2021) mainly uses arsenic removal and neutralization processes, and there is still a indicated considerable room for improvement in terms of arsenic removal efficiency, stability of solid waste generated after arsenic removal (Silva and Mello-Castanho, 2007), and disposal cost (Lee et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Study on Waste Acid Modificated Industrial Solid Waste Aluminum Ash to Prepare Environmental Functional Materials to Remove Fluoride Ions in Wastewater

Ren

Chen

et al. 2022

Front. Environ. Sci.

View full text Add to dashboard Cite

C-SAAoa particles synthesized by simple and low-cost calcining industrial solid waste aluminium ash combined with waste oxalic acid modification process show excellent performance in fluoride removal speed and adsorption capacity. Their adsorption capacity on fluoride was determined at about 180.57 mg/g at pH 3.0, which was among the highest reported values in the literature. It was determined that the adsorption mechanism of fluoride on C-SAAoa particles followed mechanisms such as ion exchange, electrostatic action, and the surface - OH groups played a major role in the fluoride removal process. C-SAAoa particles can effectively remove fluoride, even in the presence of a certain concentration of competing anions. At the same time, the material possesses good cycling performance, and can still maintain 78.9% of the initial adsorption capacity in the longitudinal for eight recycles. Therefore, it may have the potential to become a promising adsorbent as a supplement to industrial solid waste resource-based utilization processes and also for fluoride removal in small-scale treatment facilities or wastewater with high fluoride concentrations.

show abstract

Vitrified galvanic waste chemical stability

Cited by 23 publications

References 15 publications

Volatile Organic Compounds (VOCs) Distribution from PCB Waste and Vitrification by Reacting with Flux Agents

Volatile Organic Compounds (VOCs) Distribution from PCB Waste and Vitrification by Reacting with Flux Agents

Thermal Analysis and Immobilisation of Spent Ion Exchange Resin in Borosilicate Glass

Study on Waste Acid Modificated Industrial Solid Waste Aluminum Ash to Prepare Environmental Functional Materials to Remove Fluoride Ions in Wastewater

Contact Info

Product

Resources

About