PMID- 37949290
OWN - NLM
STAT- MEDLINE
DCOM- 20240105
LR  - 20240116
IS  - 1096-0953 (Electronic)
IS  - 0013-9351 (Linking)
VI  - 241
DP  - 2024 Jan 15
TI  - Optimization of moving bed biofilm reactors for the treatment of municipal 
      wastewater.
PG  - 117560
LID - S0013-9351(23)02364-2 [pii]
LID - 10.1016/j.envres.2023.117560 [doi]
AB  - The properties of biocarriers significantly influence the performance of a moving 
      bed-biofilm reactor (MBBR). This study aimed to assess the impact of media type, 
      filling ratio, and hydraulic retention time (HRT) on biofilm formation and MBBR 
      performance in both batch and continuous setups using real municipal wastewater. 
      Two different media, high-density polyethylene (HDPE) and polypropylene (PPE), 
      with varying surface area and properties were used. Biofilm growth and MBBR 
      performance were monitored and optimized using response surface methodology. The 
      effect of different media was investigated for three filling ratios of 20%, 40% 
      and 60% and HRT of 4, 6 and 8 h. Results depicted a better biofilm growth on HDPE 
      media in comparison to PPE carriers due to difference in media structure and 
      surface properties. At all the conditions tested, HDPE media showed comparatively 
      better performance for the removal of organic matter and nutrients than PPE 
      media. The maximum organic matter removal efficiency was found as 77% and 75% at 
      an HRT of 6 h and filling ratio of 40% for HDPE and PPE media, respectively. The 
      ammonia removal was also found better for HDPE media due to its geometry and 
      structure favoring the anoxic conditions with maximum removal of 89% achieved at 
      6-h HRT and 40% filling ratio. Overall, the system with HDPE media indicated more 
      stability in terms of reactor performance than PPE carriers with variations in 
      the operating conditions.
CI  - Copyright (c) 2023 Elsevier Inc. All rights reserved.
FAU - Pratap, Vinay
AU  - Pratap V
AD  - CSIR-National Environmental Engineering and Research Institute (CSIR-NEERI), 
      Nehru Marg, Nagpur, 440 020, India; Academy of Scientific and Innovative Research 
      (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India.
FAU - Kumar, Rakesh
AU  - Kumar R
AD  - CSIR-National Environmental Engineering and Research Institute (CSIR-NEERI), 
      Nehru Marg, Nagpur, 440 020, India.
FAU - Kumar, Sunil
AU  - Kumar S
AD  - CSIR-National Environmental Engineering and Research Institute (CSIR-NEERI), 
      Nehru Marg, Nagpur, 440 020, India; Academy of Scientific and Innovative Research 
      (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India.
FAU - Yadav, Bholu Ram
AU  - Yadav BR
AD  - CSIR-National Environmental Engineering and Research Institute (CSIR-NEERI), 
      Nehru Marg, Nagpur, 440 020, India; Academy of Scientific and Innovative Research 
      (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India. Electronic address: 
      br.yadav@neeri.res.in.
LA  - eng
PT  - Journal Article
DEP - 20231108
PL  - Netherlands
TA  - Environ Res
JT  - Environmental research
JID - 0147621
RN  - 0 (Wastewater)
RN  - 9002-88-4 (Polyethylene)
SB  - IM
MH  - *Wastewater
MH  - *Waste Disposal, Fluid/methods
MH  - Biofilms
MH  - Polyethylene
MH  - Bioreactors
OTO - NOTNLM
OT  - Biofilm growth
OT  - Filling ratio
OT  - Moving bed biofilm reactor
OT  - Optimization
OT  - Wastewater treatment
COIS- Declaration of competing interest 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- 2023/11/11 11:45
MHDA- 2024/01/05 06:43
CRDT- 2023/11/10 19:15
PHST- 2023/08/30 00:00 [received]
PHST- 2023/10/18 00:00 [revised]
PHST- 2023/10/30 00:00 [accepted]
PHST- 2024/01/05 06:43 [medline]
PHST- 2023/11/11 11:45 [pubmed]
PHST- 2023/11/10 19:15 [entrez]
AID - S0013-9351(23)02364-2 [pii]
AID - 10.1016/j.envres.2023.117560 [doi]
PST - ppublish
SO  - Environ Res. 2024 Jan 15;241:117560. doi: 10.1016/j.envres.2023.117560. Epub 2023 
      Nov 8.