Study of PCDD/Fs distribution in fly ash, ash deposits, and bottom ash from a medical waste incinerator in China

2013 ◽  
Vol 63 (2) ◽  
pp. 230-236 ◽  
Author(s):  
Yingzhe Du ◽  
Yuqi Jin ◽  
Shengyong Lu ◽  
Zheng Peng ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
Fly Ash ◽  
Bottom Ash ◽  
Medical Waste ◽  
Waste Incinerator

scholarly journals Ternary Mixes of Self-Compacting Concrete with Fly Ash and Municipal Solid Waste Incinerator Bottom Ash

2020 ◽  
Vol 11 (1) ◽  
pp. 107
Author(s):  
B. Simões ◽  
P. R. da Silva ◽  
R. V. Silva ◽  
Y. Avila ◽  
J. A. Forero
Keyword(s):  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Chloride Diffusion ◽  
Waste Incinerator ◽  
Chloride Diffusion Coefficient ◽  
Municipal Solid Waste Incinerator ◽  
Self Compacting Concrete ◽  
Solid Waste Incinerator

This study aims to evaluate the potential of incorporating fly ash (FA) and municipal solid waste incinerator bottom ash (MIBA) as a partial substitute of cement in the production of self-compacting concrete mixes through an experimental campaign in which four replacement levels (i.e., 10% FA + 20% MIBA, 20% FA + 10% MIBA, 20% FA + 40% MIBA and 40% FA + 20% MIBA, apart from the reference concrete) were considered. Compressive and tensile strengths, Young’s modulus, ultra-sonic pulse velocity, shrinkage, water absorption by immersion, chloride diffusion coefficient and electrical resistivity were evaluated for all concrete mixes. The results showed a considerable decline in both mechanical and durability-related performances of self-compacting concrete with 60% of substitution by MIBA mainly due to the aluminium corrosion chemical reaction. However, workability properties were not significantly affected, exhibiting values similar to those of the control mix.

scholarly journals Characteristics and Treatment Methods of Medical Waste Incinerator Fly Ash: A Review

Processes ◽  
2018 ◽  
Vol 6 (10) ◽  
pp. 173 ◽  
Author(s):  
Fang Liu ◽  
Han-Qiao Liu ◽  
Guo-Xia Wei ◽  
Rui Zhang ◽  
Tong-Tong Zeng ◽  
...  
Keyword(s):  
Fly Ash ◽  
Microwave Treatment ◽  
Medical Waste ◽  
Waste Incinerator ◽  
Municipal Solid Waste Incinerator ◽  
Carbonaceous Matter ◽  
Human Beings ◽  
Natural Properties ◽  
Treatment Techniques ◽  
Solid Waste Incinerator

Medical waste incinerator fly ash (MWIFA) is quite different from municipal solid waste incinerator fly ash (MSWIFA) due to its special characteristics of high levels of chlorines, dioxins, carbon constituents, and heavy metals, which may cause irreversible harm to environment and human beings if managed improperly. However, treatment of MWIFA has rarely been specifically mentioned. In this review, various treatment techniques for MSWIFA, and their merits, demerits, applicability, and limitations for MWIFA are reviewed. Natural properties of MWIFA including the high contents of chlorine and carbonaceous matter that might affect the treatment effects of MWIFA are also depicted. Finally, several commendatory and feasible technologies such as roasting, residual carbon melting, the mechanochemical technique, flotation, and microwave treatment are recommended after an overall consideration of the special characteristics of MWIFA, balancing environmental, technological, economical information.

Synthetic wollastonitic glass ceramics derived from recycled glass and medical waste incinerator fly ash

2018 ◽  
Vol 6 (5) ◽  
pp. 5812-5819 ◽  
Author(s):  
S. Papamarkou ◽  
C. Sifaki ◽  
P.E. Tsakiridis ◽  
G. Bartzas ◽  
K. Tsakalakis
Keyword(s):  
Fly Ash ◽  
Glass Ceramics ◽  
Medical Waste ◽  
Waste Incinerator ◽  
Recycled Glass

scholarly journals Experimental Investigation of the Decarburization Behavior of Medical Waste Incinerator Fly Ash (MWIFA)

Processes ◽  
2018 ◽  
Vol 6 (10) ◽  
pp. 186 ◽  
Author(s):  
Guoxia Wei ◽  
Hanqiao Liu ◽  
Fang Liu ◽  
Tongtong Zeng ◽  
Guisheng Liu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Removal Efficiency ◽  
Tween 80 ◽  
Medical Waste ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Waste Incinerator ◽  
Pump Speed ◽  
Flotation Column ◽  
Micro Bubble

The objective of the research was to compare the flotation performance of medical waste incinerator fly ash (MWIFA) by considering two methods: the cyclonic-static micro-bubble flotation column (FCSMC) method and conventional flotation cell (CFC) method. The results indicated that for FSCMC, the optimum parameters were kerosene = 3.5 g/kg·ash, methyl isobutyl carbinol (MIBC) = 0.2 g/kg·ash, Tween 80 = 7.5% of kerosene concentration, slurry concentration = 100 g/L, and pump speed = 380 r/min. The optimized conditions resulted in a higher dioxin removal efficiency (90.98%), carbon removal efficiency (91.88%) and lower loss on ignition (LOI) (4.96%). The data obtained from the CFC under different optimum operating conditions were 88.65%, 90.63% and 5.68%, respectively. FSCMC was proven to be more efficient for the flotation of MWIFA than CFC.

Detoxification of medical waste incinerator fly ash through successive flotation

2018 ◽  
Vol 54 (1) ◽  
pp. 163-172 ◽  
Author(s):  
Fang Liu ◽  
Han-Qiao Liu ◽  
Guo-Xia Wei ◽  
Rui Zhang ◽  
Gui-Sheng Liu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Medical Waste ◽  
Waste Incinerator
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