PMID- 31404739
OWN - NLM
STAT- MEDLINE
DCOM- 20191211
LR  - 20221207
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 237
DP  - 2019 Dec
TI  - Enhanced removal of nitrate and refractory organic pollutants from bio-treated 
      coking wastewater using corncobs as carbon sources and biofilm carriers.
PG  - 124520
LID - S0045-6535(19)31744-8 [pii]
LID - 10.1016/j.chemosphere.2019.124520 [doi]
AB  - The quality of the bio-treated coking wastewater (BTCW) is difficult to meet 
      increasingly stringent coking wastewater discharge standards and future 
      wastewater recycling needs. In this study, the pre-treatment process of BTCW was 
      installed including the two up-flow fixed-bed bioreactors (UFBRs) which were 
      separately filled with alkali-pretreated or no alkali-pretreated corncobs used as 
      solid carbon sources as well as biofilm carriers. Results showed that this 
      pre-treatment process could significantly improve the biodegradability of BTCW 
      and increase the C/N ratio. Thus, over 90% of residual nitrate in BTCW were 
      removed stably. Furthermore, GC-MS analysis confirmed that the typical refractory 
      organic matters decreased significantly after UFBRs pre-treatment. 
      High-throughput sequencing analysis using 16S rRNA demonstrated that dominant 
      denitrifiers, fermentative bacteria and refractory-organic-pollutants-degrading 
      bacteria co-existed inside the UFBRs system. Compared with no alkali-pretreated 
      corncobs, alkali-pretreated corncobs provided more porous structure and much 
      stable release of carbon to guarantee the growth and the quantity of the 
      functional bacteria such as denitrifiers. This study indicated that the UFBRs 
      filled with alkali-pretreated corncobs could be utilized as an effective 
      alternative for the enhanced treatment of the BTCW.
CI  - Copyright (c) 2019 Elsevier Ltd. All rights reserved.
FAU - Sun, Guoping
AU  - Sun G
AD  - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 
      China; School of Materials and Chemical Engineering, Zhongyuan University of 
      Technology, Zhengzhou, China.
FAU - Wan, Junfeng
AU  - Wan J
AD  - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 
      China; Henan Center for Outstanding Overseas Scientists, Zhengzhou, China. 
      Electronic address: wanjunfeng@zzu.edu.cn.
FAU - Sun, Yichen
AU  - Sun Y
AD  - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 
      China.
FAU - Li, Haisong
AU  - Li H
AD  - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 
      China.
FAU - Chang, Chun
AU  - Chang C
AD  - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 
      China; Henan Center for Outstanding Overseas Scientists, Zhengzhou, China.
FAU - Wang, Yan
AU  - Wang Y
AD  - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 
      China.
LA  - eng
PT  - Journal Article
DEP - 20190805
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Coke)
RN  - 0 (Environmental Pollutants)
RN  - 0 (Nitrates)
RN  - 0 (RNA, Ribosomal, 16S)
RN  - 0 (Waste Water)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7440-44-0 (Carbon)
SB  - IM
MH  - *Biodegradation, Environmental
MH  - Biofilms
MH  - Bioreactors
MH  - Carbon
MH  - Coke/*analysis
MH  - Environmental Pollutants
MH  - Nitrates/*analysis/metabolism
MH  - RNA, Ribosomal, 16S
MH  - Recycling
MH  - Waste Disposal, Fluid/*methods
MH  - Wastewater/*chemistry
MH  - Water Pollutants, Chemical/*analysis/metabolism
MH  - Zea mays
OTO - NOTNLM
OT  - Bio-treated coking wastewater (BTCW)
OT  - Corncobs
OT  - Refractory organic pollutants
OT  - Up-flow fixed-bed bioreactor (UFBR)
EDAT- 2019/08/14 06:00
MHDA- 2019/12/18 06:00
CRDT- 2019/08/13 06:00
PHST- 2019/05/24 00:00 [received]
PHST- 2019/07/31 00:00 [revised]
PHST- 2019/08/04 00:00 [accepted]
PHST- 2019/08/14 06:00 [pubmed]
PHST- 2019/12/18 06:00 [medline]
PHST- 2019/08/13 06:00 [entrez]
AID - S0045-6535(19)31744-8 [pii]
AID - 10.1016/j.chemosphere.2019.124520 [doi]
PST - ppublish
SO  - Chemosphere. 2019 Dec;237:124520. doi: 10.1016/j.chemosphere.2019.124520. Epub 
      2019 Aug 5.