Heavy Metal Leaching Characteristics of Silicate Glass Containing EAF Dust

2006 ◽  
Vol 43 (2) ◽  
pp. 136-141
Keyword(s):  
Heavy Metal ◽  
Silicate Glass ◽  
Metal Leaching ◽  
Heavy Metal Leaching ◽  
Eaf Dust ◽  
Leaching Characteristics

Heavy Metal Leaching Behavior of Glasses Containing EAF Dust

2005 ◽  
Vol 486-487 ◽  
pp. 382-386 ◽  
Author(s):  
Hee Tai Eun ◽  
Seung Gu Kang ◽  
Yoo Taek Kim ◽  
Gi Kang Lee ◽  
Jung Hwan Kim
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Silicate Glass ◽  
Structural Changes ◽  
Chemical Durability ◽  
Metal Leaching ◽  
Lead Silicate ◽  
Heavy Metal Leaching ◽  
Eaf Dust ◽  
Ft Ir

Stabilizing characteristics of heavy metals in the silicate glass (SD) and lead silicate glass(PD) containing Electric Arc Furnace(EAF) dust was studied by the toxic characterization leaching procedure(TCLP) test. Dependence of the amount of EAF dust upon structural changes of SD and PD glasses and TCLP results was also investigated by FT-IR spectroscopy. In the TCLP test, the concentration of heavy metals leached from a glass increased with the amount of EAF dust added. The SD series specimens showed heavy metal leaching lower than the PD series specimens, but the Pb leaching from the PD series specimens was the highest owing to the high Pb content in the PD glass composition. The value R(oxygen/network former ion ratio) was used to compare the leaching characteristics of glasses, and the SD had a higer R than PD series specimens to show a better chemical durability. Adding the EAF dust to the SD mother glass decreased the Si-O-Si symmetry and increased the non-bridging oxygen, which weakened the structure and decreased the chemical durability of glasses. It is concluded that SD is more effective in stabilizing the heavy metals of EAF dust than PD series glass.

scholarly journals Direct reuse of two deep-dewatered sludge cakes without a solidifying agent as landfill cover: geotechnical properties and heavy metal leaching characteristics

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 3823-3830 ◽  
Author(s):  
Jiakuan Yang ◽  
Shinan Zhang ◽  
Yafei Shi ◽  
Chao Li ◽  
Wenbo Yu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Geotechnical Properties ◽  
Metal Leaching ◽  
Curing Time ◽  
Heavy Metal Leaching ◽  
Landfill Cover ◽  
Leaching Characteristics ◽  
Dewatered Sludge

The skeleton builders improve the geotechnical properties and heavy metal leaching characteristics of the dewatered sludge cakes which make them appropriate for re-use as landfill cover materials after a certain curing time.

Properties and heavy metal leaching characteristics of leachate sludge derived biochar

2021 ◽  
Author(s):  
Huiqin Zhang ◽  
Zixian Wang ◽  
Chenyu Du ◽  
Wenlong Liu ◽  
Andrea R. Gerson ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Leaching ◽  
Heavy Metal Leaching ◽  
Leaching Characteristics

Heavy Metal Leaching Behavior of Glasses Containing EAF Dust

2005 ◽  
pp. 382-386
Author(s):  
Hee Tai Eun ◽  
Seung Gu Kang ◽  
Yoo Taek Kim ◽  
Gi Kang Lee ◽  
Jung Hwan Kim
Keyword(s):  
Heavy Metal ◽  
Metal Leaching ◽  
Leaching Behavior ◽  
Heavy Metal Leaching ◽  
Eaf Dust

Corrosion of Silicate Glasses and Glass-Ceramics Containing EAF Dust in Acidic Solution

2007 ◽  
Vol 124-126 ◽  
pp. 1585-1588 ◽  
Author(s):  
Hwan Sik Kim ◽  
Yoo Taek Kim ◽  
Gi Gang Lee ◽  
Jung Hwan Kim ◽  
Seung Gu Kang
Keyword(s):  
Heavy Metal ◽  
Glass Ceramic ◽  
Acidic Solution ◽  
Glass Ceramics ◽  
Glass Network ◽  
Metal Leaching ◽  
Leaching Test ◽  
Spinel Crystal ◽  
Heavy Metal Leaching ◽  
Eaf Dust

The corrosion behavior of glass and glass-ceramics fabricated with silicate glass frit mixed with 50~70 wt% EAF dust in the acidic solution was analyzed by both heavy metal leaching test and microstructural observation. The crystallization temperature, Tc of glassy specimens was around 850 measured by DTA and the heat treatment temperature to crystallize a glassy specimen was selected as 950 / 1 hr. The spinel crystal peaks were found in XRD analysis for the glass containing dust > 60 wt%. For the glass-ceramics, however, the spinel peaks in a specimen containing dust > 50 wt% was found with weak willemite peaks. The glass and glass-ceramic specimens showed the first stage of corroding reaction according to Clark models in acidic solution. The glass-ceramic specimens showed much lower a heavy metal leaching concentration than that of glass specimens in the corrosion test in acidic solution of pH=2.95. Especially, the glass-ceramics containing dust 60 wt% showed a heavy metal leaching concentration of 66 % Pb, 60 % Zn and 98 % Fe lower than that of glass specimens due to crystal phases formed, thermodynamically more stable than a glass network structure. From the leaching test that more Zn ion leached out than Fe ion, the spinel crystal phase [ZnFe2O4] showed better corrosion resistant in the acidic solution than the willemite [Zn2SiO4].

Influence of speciation distribution and particle size on heavy metal leaching from MSWI fly ash

2022 ◽  
Vol 138 ◽  
pp. 318-327
Author(s):  
Davide Bernasconi ◽  
Caterina Caviglia ◽  
Enrico Destefanis ◽  
Angelo Agostino ◽  
Renato Boero ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Particle Size ◽  
Fly Ash ◽  
Metal Leaching ◽  
Mswi Fly Ash ◽  
Heavy Metal Leaching
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