Rapid evaluation of leaching potential of heavy metals from municipal solid waste incineration fly ash

2019 ◽  
Vol 238 ◽  
pp. 144-152 ◽  
Author(s):  
Yang Yue ◽  
Zeyuan Liu ◽  
Zhongzhe Liu ◽  
Jia Zhang ◽  
Min Lu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Rapid Evaluation ◽  
Municipal Solid Waste Incineration ◽  
Leaching Potential ◽  
Waste Incineration Fly Ash

Distribution of Heavy Metals in the Flue Gas from Municipal Solid Waste Incineration Fly Ash Melt Process

2013 ◽  
Vol 25 (1) ◽  
pp. 157-160 ◽  
Author(s):  
Jian Yang ◽  
Juan Wen ◽  
Qingcai Liu ◽  
Guofang Wu ◽  
Lang Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Flue Gas ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Waste Incineration Fly Ash

scholarly journals Bioleaching of Heavy Metals from Municipal Solid Waste Incineration Fly Ash: Availability of Recoverable Sulfur Prills and Form Transformation of Heavy Metals

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 815
Author(s):  
Ruichang Zhang ◽  
Xuefeng Wei ◽  
Qiang Hao ◽  
Ruofan Si
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Sulfur Powder ◽  
Sulfate Production ◽  
Ph Reduction ◽  
Waste Incineration Fly Ash

Bioleaching is an effective and promising approach for the recovery or removal of heavy metals from metal-laden municipal solid waste incineration fly ash. To exclude the risk of reacidification of the leached fly ash after bioleaching with sulfur powder, molded sulfur prills were used as energy substrate for sulfur oxidizing bacteria to examine the availability of reusing the recyclable sulfur forms. The chemical species of heavy metals during the bioleaching process were also investigated. Results showed that the pH reduction, sulfate production, and metal solubilization with sulfur prills were comparable to that with sulfur powder despite of the theoretically calculated smaller surface of the formers. After 15 days of bioleaching, 80.7–82.1% of Cd, 72.5–74.1% of Zn, 42.8–43.9% of Cu, 24.1–25.2% of Cr, and 12.4–13.0% of Pb were removed from the fly ash, respectively. During bioleaching, heavy metals in the acid extractable and reducible fraction were significantly removed, and metals in oxidizable from were partially reduced. The low leaching toxicity of heavy metals according to toxicity characteristic leaching procedure (TCLP) verified the effective detoxification of fly ash. Moreover, the comparable pH reduction and metal removal efficiencies of bioleaching process with recycled sulfur prills to that with fresh sulfur revealed the potential of reusing the recoverable sulfur prills in the bioleaching process for decontamination of heavy metals from municipal solid waste fly ash.

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