PMID- 30096548
OWN - NLM
STAT- MEDLINE
DCOM- 20181114
LR  - 20181114
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 242
IP  - Pt B
DP  - 2018 Nov
TI  - Insight into mechanism of aged biochar for adsorption of PAEs: Reciprocal effects 
      of ageing and coexisting Cd(2).
PG  - 1098-1107
LID - S0269-7491(18)31784-6 [pii]
LID - 10.1016/j.envpol.2018.07.124 [doi]
AB  - Biomass derived biochar is a stable carbon-rich product with potential for soil 
      amendment. Introduced into the natural environment, biochar will naturally 
      experience 'ageing' processes that are liable to change its physicochemical 
      properties and the mobility of sorbed pollutants over the longer term. To 
      elucidate the reciprocal effects of biochar ageing and heavy metal adsorption on 
      the affinity of biochar for organic pollutants, we systematically assessed the 
      adsorption of diethyl phthalate (DEP), representative of phthalic acid esters 
      (PAEs), to fresh and aged biochars with and without coexistence of Cd(2+). 
      Long-term oxidative ageing was simulated using 5% H(2)O(2) and applied to biochar 
      samples made from corn cob, maize straw and wheat straw made by pyrolysis at both 
      450  degrees C and 650  degrees C. Our results showed that biochar made at lower temperature 
      (450  degrees C) and from straw exhibited the higher adsorption capacity, owing to their 
      greater polarity and abundance of O-containing functional groups. The adsorption 
      of DEP onto fresh biochars was found to be driven by van der Waals force and 
      H-bonding. Biochar made at the higher temperature (650  degrees C) displayed higher 
      carbon stability than that produced at lower pyrolysis temperature. Oxidized 
      biochar showed lower adsorption capacity than fresh biochar owing to the 
      formation of three-dimensional water clusters on biochar surface, which blocked 
      accessible sites and decreased the H-bonding effect between DEP and biochars. The 
      coexistence of Cd(2+) suppressed the sorption of DEP, via competition for the 
      same electron-rich sites. This indicates that cation/pi-pi EDA interactions are the 
      primary mechanism for PAE and Cd(2+) stabilization on biochar. Our study sheds 
      light on the mechanism of organic pollutant sorption by biochar, as well as the 
      potential susceptibilities of this sorption to ageing effects in the natural 
      environment.
CI  - Copyright (c) 2018 Elsevier Ltd. All rights reserved.
FAU - Jing, Fanqi
AU  - Jing F
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, 
      China University of Geosciences, Beijing, 100083, PR China.
FAU - Sohi, Saran P
AU  - Sohi SP
AD  - UK Biochar Research Centre, School of GeoSciences, University of Edinburgh, 
      Edinburgh, EH9 3FF, UK.
FAU - Liu, Yuyan
AU  - Liu Y
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, 
      China University of Geosciences, Beijing, 100083, PR China.
FAU - Chen, Jiawei
AU  - Chen J
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Beijing, 100083, PR China; School of Earth Sciences and Resources, 
      China University of Geosciences, Beijing, 100083, PR China. Electronic address: 
      chenjiawei@cugb.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20180801
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Phthalic Acids)
RN  - 0 (Soil Pollutants)
RN  - 0 (biochar)
RN  - 00BH33GNGH (Cadmium)
RN  - 16291-96-6 (Charcoal)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - UF064M00AF (diethyl phthalate)
SB  - IM
MH  - Adsorption
MH  - Biomass
MH  - Cadmium/*chemistry
MH  - Charcoal/*chemistry
MH  - Hot Temperature
MH  - Hydrogen Peroxide/chemistry
MH  - Oxidation-Reduction
MH  - Phthalic Acids/*chemistry
MH  - Soil Pollutants/*chemistry
MH  - Triticum
MH  - Zea mays
OTO - NOTNLM
OT  - Cd(2+)
OT  - Coexistent adsorption
OT  - Oxidized biochar
OT  - PAEs
OT  - Stability
EDAT- 2018/08/11 06:00
MHDA- 2018/11/15 06:00
CRDT- 2018/08/11 06:00
PHST- 2018/04/21 00:00 [received]
PHST- 2018/07/12 00:00 [revised]
PHST- 2018/07/27 00:00 [accepted]
PHST- 2018/08/11 06:00 [pubmed]
PHST- 2018/11/15 06:00 [medline]
PHST- 2018/08/11 06:00 [entrez]
AID - S0269-7491(18)31784-6 [pii]
AID - 10.1016/j.envpol.2018.07.124 [doi]
PST - ppublish
SO  - Environ Pollut. 2018 Nov;242(Pt B):1098-1107. doi: 10.1016/j.envpol.2018.07.124. 
      Epub 2018 Aug 1.