PMID- 26336844
OWN - NLM
STAT- MEDLINE
DCOM- 20160826
LR  - 20181202
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 23
IP  - 1
DP  - 2016 Jan
TI  - Geochemically structural characteristics of municipal solid waste incineration 
      fly ash particles and mineralogical surface conversions by chelate treatment.
PG  - 734-43
LID - 10.1007/s11356-015-5229-5 [doi]
AB  - Leaching behaviors of heavy metals contained in municipal solid waste 
      incineration (MSWI) fly ash have been studied well. However, 
      micro-characteristics of MSWI fly ash particles are still uncertain and might be 
      non-negligible to describe their leaching behaviors. Therefore, this study 
      investigated micro-characteristics of MSWI fly ash particles, especially their 
      structural properties and impacts of chelate treatment on surface 
      characteristics. According to SEM observations, raw fly ash particles could be 
      categorized into four types based on their shapes. Because chelate treatment 
      changed the surface of fly ash particles dramatically owing to secondary mineral 
      formations like ettringite, two more types could be categorized for 
      chelate-treated fly ash particles. Acid extraction experiments suggest that fly 
      ash particles, tested in this study, consist of Si-base insoluble core structure, 
      Al/Ca/Si-base semi-soluble matrices inside the body, and KCl/NaCl-base soluble 
      aggregates on the surface. Scanning electron microscope (SEM) observations of the 
      same fly ash particles during twice moistening treatments showed that KCl/NaCl 
      moved under wet condition and concentrated at different places on the particle 
      surface. However, element mobility depended on secondary mineral formations. When 
      insoluble mineral like gypsum was generated and covered the particle surface, it 
      inhibited element transfer under wet condition. Surface characteristics including 
      secondary mineral formation of MSWI fly ash particles are likely non-negligible 
      to describe trace element leaching behaviors.
FAU - Kitamura, Hiroki
AU  - Kitamura H
AD  - Department of Environmental Science and Technology, Interdisciplinary Graduate 
      School of Science and Engineering, Tokyo Institute of Technology, 4259, 
      Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan.
FAU - Sawada, Takaya
AU  - Sawada T
AD  - Faculty of Urban and Environmental Engineering, Graduate School of Engineering, 
      Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
FAU - Shimaoka, Takayuki
AU  - Shimaoka T
AD  - Faculty of Urban and Environmental Engineering, Graduate School of Engineering, 
      Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
FAU - Takahashi, Fumitake
AU  - Takahashi F
AD  - Department of Environmental Science and Technology, Interdisciplinary Graduate 
      School of Science and Engineering, Tokyo Institute of Technology, 4259, 
      Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan. takahashi.f.af@m.titech.ac.jp.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20150904
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 0 (Chelating Agents)
RN  - 0 (Coal Ash)
RN  - 0 (Metals, Heavy)
RN  - 0 (Minerals)
RN  - 0 (Solid Waste)
RN  - 0 (ettringite)
RN  - 7440-44-0 (Carbon)
SB  - IM
MH  - Carbon/chemistry
MH  - Chelating Agents
MH  - Coal Ash/*chemistry
MH  - *Incineration
MH  - Metals, Heavy/analysis
MH  - Minerals/chemistry
MH  - *Solid Waste
OTO - NOTNLM
OT  - Chelate treatment
OT  - Incineration fly ash
OT  - Municipal solid waste
OT  - Secondary mineral formation
OT  - Structural characteristics
EDAT- 2015/09/05 06:00
MHDA- 2016/08/27 06:00
CRDT- 2015/09/05 06:00
PHST- 2015/05/18 00:00 [received]
PHST- 2015/08/11 00:00 [accepted]
PHST- 2015/09/05 06:00 [entrez]
PHST- 2015/09/05 06:00 [pubmed]
PHST- 2016/08/27 06:00 [medline]
AID - 10.1007/s11356-015-5229-5 [pii]
AID - 10.1007/s11356-015-5229-5 [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2016 Jan;23(1):734-43. doi: 
      10.1007/s11356-015-5229-5. Epub 2015 Sep 4.