PMID- 31991396
OWN - NLM
STAT- MEDLINE
DCOM- 20200408
LR  - 20200408
IS  - 1090-2414 (Electronic)
IS  - 0147-6513 (Linking)
VI  - 191
DP  - 2020 Mar 15
TI  - Phosphate microbial mineralization consolidation of waste incineration fly ash 
      and removal of lead ions.
PG  - 110224
LID - S0147-6513(20)30063-4 [pii]
LID - 10.1016/j.ecoenv.2020.110224 [doi]
AB  - This paper proposes a green environment-friendly Bacillus subtilis to mineralize 
      and consolidate waste incineration fly ash and heavy metal cations, and there is 
      no harmful by-product in the mineralization process. Different phosphate products 
      can be prepared, and are more stable than the microbially-induced carbonate 
      precipitation (MICP) in nature. Typical heavy metal oxides were mainly PbO, ZnO, 
      CdO, NiO, CuO and Cr(2)O(3) in the chemical composition of waste incineration fly 
      ash. Microstructure and chemical composition of waste incineration fly ash before 
      and after treatment were characterized by powder X-ray diffraction (XRD) analysis 
      and scanning electron microscopy. Scanning electron microscopy (SEM) images 
      showed that the morphology of the Bacillus subtilis was mainly a rod-like 
      structure. The optimal hydrolysis dosage of the organic phosphate monoester 
      sodium salt was 0.2mol in the bacterial solution (1L, 20 g/L). The optimum 
      required mass of the bacterial powder was 15 g/kg in treatment process of the 
      waste incineration fly ash. The initial concentration of lead ions was 40.28 mg/L 
      in waste incineration fly ash solution. After the optimum dosage treatment, the 
      removal efficiency of lead ions was 78.15%, 79.64%, 77.70% and 80.14% when curing 
      time was 1, 2, 4 and 6d, respectively. The waste incineration fly ash had a Shore 
      hardness of 22 after the optimum amount of bacterial liquid treatment. Results of 
      wind erosion test showed that the wind erosion rate of waste incineration fly ash 
      was 2.6, 0, 0, 0, 0 and 0 g/h when blank group, deionized water, 100, 200, 300 
      and 400 mL of bacterial solutions treated, respectively. The bio-mineralization 
      method provides an approach for the safe disposal of heavy metals in the 
      contaminated areas of tailings, electroplating sewage, waste incineration plants, 
      and so on.
CI  - Copyright (c) 2020 Elsevier Inc. All rights reserved.
FAU - Yu, Xiaoniu
AU  - Yu X
AD  - School of Environment, Tsinghua University, Beijing, 100084, China; College of 
      Architecture and Civil Engineering, Wenzhou University, Wenzhou, 325035, China.
FAU - Jiang, Jianguo
AU  - Jiang J
AD  - School of Environment, Tsinghua University, Beijing, 100084, China. Electronic 
      address: jianguoj@mail.tsinghua.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20200125
PL  - Netherlands
TA  - Ecotoxicol Environ Saf
JT  - Ecotoxicology and environmental safety
JID - 7805381
RN  - 0 (Cations)
RN  - 0 (Coal Ash)
RN  - 0 (Metals, Heavy)
RN  - 0 (Minerals)
RN  - 0 (Organophosphates)
RN  - 0 (Phosphates)
RN  - 2P299V784P (Lead)
SB  - IM
MH  - Bacillus subtilis/*metabolism/ultrastructure
MH  - Cations
MH  - Coal Ash/*chemistry
MH  - *Incineration
MH  - Lead/*analysis/chemistry
MH  - Metals, Heavy/analysis/chemistry
MH  - Microscopy, Electron, Scanning
MH  - *Minerals
MH  - Organophosphates/analysis
MH  - Phosphates/chemistry
MH  - Refuse Disposal/methods
OTO - NOTNLM
OT  - Chemical composition
OT  - Heavy metal cations
OT  - Removal efficiency
OT  - Waste incineration fly ash
OT  - Wind erosion rate
COIS- Declaration of competing interest The authors declare no conflict of interest.
EDAT- 2020/01/29 06:00
MHDA- 2020/04/09 06:00
CRDT- 2020/01/29 06:00
PHST- 2019/11/16 00:00 [received]
PHST- 2019/12/30 00:00 [revised]
PHST- 2020/01/15 00:00 [accepted]
PHST- 2020/01/29 06:00 [pubmed]
PHST- 2020/04/09 06:00 [medline]
PHST- 2020/01/29 06:00 [entrez]
AID - S0147-6513(20)30063-4 [pii]
AID - 10.1016/j.ecoenv.2020.110224 [doi]
PST - ppublish
SO  - Ecotoxicol Environ Saf. 2020 Mar 15;191:110224. doi: 
      10.1016/j.ecoenv.2020.110224. Epub 2020 Jan 25.