PMID- 33964621
OWN - NLM
STAT- MEDLINE
DCOM- 20210527
LR  - 20210527
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 291
DP  - 2021 Aug 1
TI  - Efficient removal of arsenite by a composite of amino modified silica supported 
      MnO(2)/Fe-Al hydroxide (SNMFA) prepared from biotite.
PG  - 112678
LID - S0301-4797(21)00740-4 [pii]
LID - 10.1016/j.jenvman.2021.112678 [doi]
AB  - Developing materials from natural minerals to efficiently remove arsenite (As(Ⅲ)) 
      from solution is vital important for resources comprehensive utilization and 
      environment protection. In this study, biotite containing minerals was used to 
      prepare a novel composite of amino modified silica supported MnO(2)/Fe-Al 
      hydroxide (SNMFA composite), which was then applied to remove arsenite. Scanning 
      electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron 
      spectroscopy (XPS) results indicated that many amorphous MnO(2) and Fe-Al 
      hydroxide nano sheets were loaded on the surface of layered silica structure. 
      Batch experiments showed that this composite could efficiently remove As(Ⅲ) from 
      aqueous solution, and the maximal removal capacity was identified as 46.11 mg/g. 
      As(Ⅲ) adsorption behaviours of SNMFA composite were confirmed by the 
      pseudo-second-order kinetic model and Langmuir model, indicating that As(Ⅲ) 
      adsorption on its surface was monolayer adsorption. The adsorption process was a 
      pH and temperature dependent process, and increasing pH and temperature have 
      facilitated the removal of As(Ⅲ). Thermodynamic analysis showed that As(Ⅲ) 
      adsorption process was a spontaneous endothermic reaction. The As(Ⅲ) removal was 
      mainly relied on the stable inner-sphere coordination model, and the 
      corresponding mechanisms were involved in chelation, precipitation, 
      oxidation-adsorption and electrostatic interaction.
CI  - Copyright (c) 2021 Elsevier Ltd. All rights reserved.
FAU - Zeng, Qiang
AU  - Zeng Q
AD  - School of Minerals Processing and Bioengineering, Central South University, 
      Changsha, 410083, China.
FAU - Zhong, Hui
AU  - Zhong H
AD  - School of Life Sciences, Central South University, Changsha, 410083, China. 
      Electronic address: hmmzhjj@csu.edu.cn.
FAU - He, Zhiguo
AU  - He Z
AD  - School of Minerals Processing and Bioengineering, Central South University, 
      Changsha, 410083, China; Faculty of Materials Metallurgy & Chemistry, Jiangxi 
      University of Science & Technology, Ganzhou, Jiangxi, 341000, China. Electronic 
      address: zghe@csu.edu.cn.
FAU - Hu, Liang
AU  - Hu L
AD  - School of Minerals Processing and Bioengineering, Central South University, 
      Changsha, 410083, China.
LA  - eng
PT  - Journal Article
DEP - 20210506
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 0 (Aluminum Silicates)
RN  - 0 (Arsenites)
RN  - 0 (Ferrous Compounds)
RN  - 0 (Manganese Compounds)
RN  - 0 (Oxides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 1302-27-8 (biotite)
RN  - 7631-86-9 (Silicon Dioxide)
SB  - IM
MH  - Adsorption
MH  - Aluminum Silicates
MH  - *Arsenites
MH  - Ferrous Compounds
MH  - Hydrogen-Ion Concentration
MH  - Kinetics
MH  - Manganese Compounds
MH  - Oxides
MH  - Silicon Dioxide
MH  - *Water Pollutants, Chemical/analysis
MH  - *Water Purification
OTO - NOTNLM
OT  - Amino modified silica
OT  - Arsenic removal
OT  - Biotite
OT  - MnO(2)/Fe-Al hydroxide
OT  - Oxidation-adsorption
EDAT- 2021/05/09 06:00
MHDA- 2021/05/28 06:00
CRDT- 2021/05/08 20:19
PHST- 2021/01/01 00:00 [received]
PHST- 2021/04/08 00:00 [revised]
PHST- 2021/04/16 00:00 [accepted]
PHST- 2021/05/09 06:00 [pubmed]
PHST- 2021/05/28 06:00 [medline]
PHST- 2021/05/08 20:19 [entrez]
AID - S0301-4797(21)00740-4 [pii]
AID - 10.1016/j.jenvman.2021.112678 [doi]
PST - ppublish
SO  - J Environ Manage. 2021 Aug 1;291:112678. doi: 10.1016/j.jenvman.2021.112678. Epub 
      2021 May 6.