PMID- 32182480
OWN - NLM
STAT- MEDLINE
DCOM- 20201120
LR  - 20221207
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 184
DP  - 2020 May
TI  - Composite of chitosan and bentonite cladding Fe-Al bimetal: Effective removal of 
      nitrate and by-products from wastewater.
PG  - 109336
LID - S0013-9351(20)30229-2 [pii]
LID - 10.1016/j.envres.2020.109336 [doi]
AB  - Chitosan was used as crosslinking agent to load bimetal particles onto bentonite. 
      The Fe-Al bimetal chitosan bentonite (Fe-Al bimetal @ bent) complex was prepared 
      for the efficient removal of nitrate from wastewater and its by-products at low 
      temperature. The samples were characterized by Scanning electron microscope 
      (SEM), Fourier transform infrared spectroscopy (FTIR), X-Ray Diffraction (XRD), 
      Zeta potential, X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller 
      (BET) surface area and Energy Dispersive X-ray Detector (EDX). SEM and EDX showed 
      that Fe(0) was deposited on the surface of aluminum, the Fe-Al bimetal were 
      surrounded by chitosan and bentonite. XRD showed that Al can effectively protect 
      the reactivity of Fe. The experimental results of nitrate removal showed that pH 
      was the main factor affecting on nitrate removal rate and performance. The 
      removal efficiency of nitrate wastewater with a concentration of 50 mg/L was 
      approximately 90% in 60min. Fe-Al bimetal @ bent has better nitrate removal 
      performance and faster reduction rate at low temperature(2-7  degrees C) than normal 
      temperature (25  degrees C). The reason was that chitosan, bentonite and bimetal have 
      excellent synergistic effect. It can effectively improve the reaction rate, pH 
      buffering capacity, reduce secondary pollution and total nitrogen (TN). Fe-Al 
      bimetal @ bent has better N(2) selectivity than Fe-Al bimetal.
CI  - Copyright (c) 2020 Elsevier Inc. All rights reserved.
FAU - Cheng, Houming
AU  - Cheng H
AD  - School of Chemistry and Materials Science, Heilongjiang University, Key 
      Laboratory of Chemical Engineering Process & Technology for High-efficiency 
      Conversion, Harbin, 150080, China.
FAU - Zhu, Qi
AU  - Zhu Q
AD  - School of Chemistry and Materials Science, Heilongjiang University, Key 
      Laboratory of Chemical Engineering Process & Technology for High-efficiency 
      Conversion, Harbin, 150080, China. Electronic address: hdzhuqi@126.com.
FAU - Wang, Aiwen
AU  - Wang A
AD  - School of Chemistry and Materials Science, Heilongjiang University, Key 
      Laboratory of Chemical Engineering Process & Technology for High-efficiency 
      Conversion, Harbin, 150080, China.
FAU - Weng, Mingmei
AU  - Weng M
AD  - School of Chemistry and Materials Science, Heilongjiang University, Key 
      Laboratory of Chemical Engineering Process & Technology for High-efficiency 
      Conversion, Harbin, 150080, China.
FAU - Xing, Zipeng
AU  - Xing Z
AD  - School of Chemistry and Materials Science, Heilongjiang University, Key 
      Laboratory of Chemical Engineering Process & Technology for High-efficiency 
      Conversion, Harbin, 150080, China. Electronic address: xzphit@126.com.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20200312
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - 0 (Waste Water)
RN  - 0 (Water Pollutants, Chemical)
RN  - 1302-78-9 (Bentonite)
RN  - 9012-76-4 (Chitosan)
SB  - IM
MH  - Adsorption
MH  - Bentonite
MH  - *Chitosan
MH  - Hydrogen-Ion Concentration
MH  - Spectroscopy, Fourier Transform Infrared
MH  - Wastewater
MH  - *Water Pollutants, Chemical
OTO - NOTNLM
OT  - Adsorption
OT  - Bimetal
OT  - Low temperature
OT  - Nitrate
OT  - Secondary pollution
OT  - Synergistic effect
COIS- Declaration of competing interests The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/03/18 06:00
MHDA- 2020/11/21 06:00
CRDT- 2020/03/18 06:00
PHST- 2019/09/13 00:00 [received]
PHST- 2019/12/20 00:00 [revised]
PHST- 2020/03/02 00:00 [accepted]
PHST- 2020/03/18 06:00 [pubmed]
PHST- 2020/11/21 06:00 [medline]
PHST- 2020/03/18 06:00 [entrez]
AID - S0013-9351(20)30229-2 [pii]
AID - 10.1016/j.envres.2020.109336 [doi]
PST - ppublish
SO  - Environ Res. 2020 May;184:109336. doi: 10.1016/j.envres.2020.109336. Epub 2020 
      Mar 12.