PMID- 35227172
OWN - NLM
STAT- MEDLINE
DCOM- 20230707
LR  - 20230718
IS  - 1479-487X (Electronic)
IS  - 0959-3330 (Linking)
VI  - 44
IP  - 19
DP  - 2023 Jul-Aug
TI  - Simultaneous removal of antimony and arsenic by nano-TiO(2)-crosslinked chitosan 
      (TA-chitosan) beads.
PG  - 2913-2923
LID - 10.1080/09593330.2022.2048084 [doi]
AB  - Antimony (Sb) and arsenic (As), carcinogenic and toxic elements, cause 
      environmental pollution, in addition, the different chemical properties of Sb and 
      As make them difficult to co-removal. In this study, we incorporated of 
      nano-TiO(2) in the chitosan matrix to synthesized an efficient adsorption 
      material nano-titania-crosslinked chitosan (TA-chitosan) beads, which was used to 
      simultaneous removal of Sb and As from aqueous solution. TA-chitosan possesses a 
      robust high removal performance for Sb and As under weakly acidic and neutral 
      conditions; however, the removal is significantly inhibited under alkaline pH 
      values. The adsorption kinetics of Sb and As on TA-chitosan conformed to the 
      pseudo-second-order model, indicating that the removal of Sb and As was a 
      chemical adsorption process. The adsorption isotherms of Sb(III/V) and As(III/V) 
      on TA-chitosan follow the Langmuir model, and their maximum adsorption capacities 
      are 70.19, 25.32, 64.52 and 102.89 mg.g(-1), respectively. The zeta potential 
      showed that the surface of TA-chitosan was negatively charged over the full pH 
      range upon Sb and As adsorption, demonstrating that negatively charged 
      inner-sphere complexes were formed on TA-chitosan. This work may also provide a 
      new perspective in titanium-chitosan material synthesis and heavy metal ions 
      co-removal.
FAU - Long, Xiaojing
AU  - Long X
AD  - State Key Laboratory of Water Environment Simulation, School of Environment, 
      Beijing Normal University, Beijing, People's Republic of China.
FAU - Wang, Tianning
AU  - Wang T
AD  - State Key Laboratory of Water Environment Simulation, School of Environment, 
      Beijing Normal University, Beijing, People's Republic of China.
FAU - He, Mengchang
AU  - He M
AD  - State Key Laboratory of Water Environment Simulation, School of Environment, 
      Beijing Normal University, Beijing, People's Republic of China.
LA  - eng
PT  - Journal Article
DEP - 20220313
PL  - England
TA  - Environ Technol
JT  - Environmental technology
JID - 9884939
RN  - 9IT35J3UV3 (Antimony)
RN  - 15FIX9V2JP (titanium dioxide)
RN  - N712M78A8G (Arsenic)
RN  - 9012-76-4 (Chitosan)
RN  - 0 (Metals, Heavy)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Antimony/chemistry
MH  - *Arsenic
MH  - *Chitosan/chemistry
MH  - Hydrogen-Ion Concentration
MH  - *Metals, Heavy
MH  - Adsorption
MH  - *Water Pollutants, Chemical/chemistry
MH  - Kinetics
OTO - NOTNLM
OT  - Chitosan
OT  - antimony
OT  - arsenic
OT  - co-adsorption
OT  - nano-TiO2
EDAT- 2022/03/02 06:00
MHDA- 2023/07/07 06:42
CRDT- 2022/03/01 05:42
PHST- 2023/07/07 06:42 [medline]
PHST- 2022/03/02 06:00 [pubmed]
PHST- 2022/03/01 05:42 [entrez]
AID - 10.1080/09593330.2022.2048084 [doi]
PST - ppublish
SO  - Environ Technol. 2023 Jul-Aug;44(19):2913-2923. doi: 
      10.1080/09593330.2022.2048084. Epub 2022 Mar 13.