PMID- 34516358
OWN - NLM
STAT- MEDLINE
DCOM- 20230310
LR  - 20230310
IS  - 1479-487X (Electronic)
IS  - 0959-3330 (Linking)
VI  - 44
IP  - 5
DP  - 2023 Feb
TI  - Enhanced adsorption of aqueous chlorinated aromatic compounds by nitrogen 
      auto-doped biochar produced through pyrolysis of rubber-seed shell.
PG  - 631-646
LID - 10.1080/09593330.2021.1980829 [doi]
AB  - The adsorption of chlorinated aromatic compounds (CACs) on pristine biochar was 
      often limited. Surface modification can greatly improve the adsorption capacity 
      of biochar. In this work, by pyrolysis activation of rubber-seed shell wastes, 
      nitrogen auto-doped biochar (RSS-NBC) was synthesized and used for purifying 
      CACs-containing wastewater. Systematic characterization results showed that after 
      proper treatment, the as-prepared RSS-NBC had high specific surface area, 
      abundant surface oxygen- and nitrogen-containing functional groups, and 
      nano-scale pore structure. Batch adsorption experiments were conducted with using 
      three typical CACs probing pollutants, i.e. 1,2-dichlorobenzene (1,2-DCB), 
      2,4-dichlorophenol (2,4-DCP) and 2,4-dichlorobenzoic acid (2,4-DCBA). The 
      adsorption experiments results showed that the maximum adsorption amounts of 1, 
      2-DCB, 2,4-DCP, and 2,4-DCBA could reach 2284, 1921, and 1142 mg/g at 298.15 K. 
      Moreover, 90% of the equilibrium adsorption amount can be reached within 0.5 h. 
      The adsorption kinetic results showed that the adsorption processes of the three 
      CACs followed the pseudo-second-order rate model and were dominated by 
      chemisorption. Also, the adsorption isotherms of 1, 2-DCB and 2, 4-DCP belonged 
      to the Freundlich model and were valid for multilayer adsorption, while the 
      adsorption of 2,4-DCBA followed Langmuir model and single-layer adsorption. The 
      thermodynamics data indicated that the spontaneous adsorption process of 1, 2-DCB 
      and 2, 4-DCP was endothermic while that of 2,4-DCBA was exothermic. After 5 
      cycles of adsorption-regeneration, the removal efficiency of RSS-NBC particles 
      still remained more than 80% for the three typical CACs, indicating that it could 
      be reused as an effective and retrievable adsorbent in the treatment of 
      CACs-containing effluents.
FAU - Wang, Wei
AU  - Wang W
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
FAU - Wang, Zhijuan
AU  - Wang Z
AD  - Faculty of Environmental Science and Engineering, Kunming University of Science 
      and Technology, Kunming, People's Republic of China.
FAU - Li, Kai
AU  - Li K
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
FAU - Liu, Yuxin
AU  - Liu Y
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
FAU - Xie, Delong
AU  - Xie D
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
FAU - Shan, Shaoyun
AU  - Shan S
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
FAU - He, Liang
AU  - He L
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
FAU - Mei, Yi
AU  - Mei Y
AD  - Faculty of Chemical Engineering, Kunming University of Science and Technology, 
      Kunming, People's Republic of China.
AD  - Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical 
      Engineering and New Phosphorus Materials, Kunming, People's Republic of China.
AD  - Higher Educational Key Laboratory for Phosphorus Chemical Engineering of Yunnan 
      Province, Kunming, People's Republic of China.
LA  - eng
PT  - Journal Article
DEP - 20211006
PL  - England
TA  - Environ Technol
JT  - Environmental technology
JID - 9884939
RN  - 0 (biochar)
RN  - 9006-04-6 (Rubber)
RN  - 0SR0320D45 (2,4-dichlorobenzoic acid)
RN  - 0 (Water Pollutants, Chemical)
RN  - 16291-96-6 (Charcoal)
RN  - 059QF0KO0R (Water)
SB  - IM
MH  - *Rubber
MH  - Adsorption
MH  - Pyrolysis
MH  - *Water Pollutants, Chemical
MH  - Charcoal/chemistry
MH  - Water
MH  - Kinetics
OTO - NOTNLM
OT  - Adsorption
OT  - chlorinated aromatic compounds
OT  - nitrogen auto-doped biochar
OT  - rubber-seed shell
EDAT- 2021/09/14 06:00
MHDA- 2023/03/11 06:00
CRDT- 2021/09/13 17:21
PHST- 2021/09/14 06:00 [pubmed]
PHST- 2023/03/11 06:00 [medline]
PHST- 2021/09/13 17:21 [entrez]
AID - 10.1080/09593330.2021.1980829 [doi]
PST - ppublish
SO  - Environ Technol. 2023 Feb;44(5):631-646. doi: 10.1080/09593330.2021.1980829. Epub 
      2021 Oct 6.