Kinetics of nitrogen removal in pilot-scale internal-loop airlift bio-particle reactor for simultaneous partial nitrification and anaerobic ammonia oxidation

Abbas, Ghulam; Wang, Lan; Li, Wei; Zhang, Meng; Zheng, Ping

doi:10.1016/j.ecoleng.2014.09.035

Cited by 26 publications

(21 citation statements)

References 18 publications

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“…This finding was consistent with previous research that reported the increase of NRR from 1.17 to 2.08 g/l.d when the HRT was dropped to 0.125/d in PN‐ANAMMOX system (Abbas et al . ). According to the model responses in Table , the optimum region of three main factors was identified as HRT= 8 h, COD/TN ratio of 100 : 14 and 65% aerated volume fraction.…”

Section: Resultsmentioning

confidence: 97%

“…) reported in the range of 0.2–0.375/d which could be due to the discrepancy in bioreactor configuration and wastewater characteristics (Abbas et al . ). It is important to note that the inhibition constant ( K i ) quantified through the Haldane equation for TN data set was more than the adjusted input concentration.…”

Section: Resultsmentioning

confidence: 97%

“…The plot of V / Q ( S 0 − S ) versus the V / QS 0 determined the saturation constant ( K B ) and a slope of K B / U max as below (Abbas et al . ):

\frac{d S}{d t} = \frac{Q (|, S_{o} - S)}{V} = \frac{U_{normalm normala normalx} (|, \frac{Q S_{o}}{V})}{K_{B} + (|, \frac{Q S_{o}}{V})}

\frac{V}{Q (|, S_{o} - S)} = \frac{K_{normalB}}{U_{normalm normala normalx}} \times \frac{V}{Q S_{o}} + \frac{1}{U_{normalm normala normalx}}

…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Modeling the kinetics and cost performance index of high rate up‐flow anaerobic, anoxic, oxic bioreactor for meat wastewater treatment

Abyar

Younesi

Bahramifar

et al. 2018

Water & Environment J

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The simultaneous biological removal of COD, TN and phosphorus from meat industrial wastewater (MIW) using a lab‐scale high rate up‐flow anaerobic–anoxic–oxic bioreactor (A2O bioreactor) was investigated. The bioreactor was operated at different HRT, COD/TN ratio and aerated volume fractions to monitor the COD and nutrient removal efficiency. The maximum COD removal rate was detected at HRT of 5 h and COD/TN ratio of 100 : 12. The total nitrogen removal efficiency was changed between 65.8 and 94.4% and the lowest effluent nitrate concentration was measured as 1.6 mg/l. Seven kinetic models were applied to experimental data to determine the substrate utilization rate. The Monod and Haldane models were ideal to estimate the reactor performance. Moreover, the cost performance evaluation indicated the A2O bioreactor capability in low energy consumption for MIW treatment. According to the modeling results, integrating anaerobic and aerobic zones within a single bioreactor could be beneficial and cost‐effective due to the high effluent quality and low operational costs.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Modeling the kinetics and cost performance index of high rate up‐flow anaerobic, anoxic, oxic bioreactor for meat wastewater treatment

Abyar

Younesi

Bahramifar

et al. 2018

Water & Environment J

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“…This implies that Grau second-order model is more appropriate for determining substrate removal kinetics of AHR and can be applied with higher degree of precision than modified Stover-Kincannon model. Abbas et al (2015) also investigated the process kinetics and stability of internal loop airlift bio-particle (ILAB) reactor and reported higher correlation coefficients (97.5 %) for Grau second-order than Stover-Kincannon model (94.2 %), respectively.…”

Section: Modelling Of Nitrogen Removal Kineticsmentioning

confidence: 96%

A new mathematical model for nitrogen gas production with special emphasis on the role of attached growth media in anammox hybrid reactor

Tomar

Gupta

2015

Appl Microbiol Biotechnol

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The present study emphasised on the development of new mathematical models based on mass balance and stoichiometry of nitrogen removal in anammox hybrid reactor (AHR). The performance of AHR at varying hydraulic retention times (HRTs) and nitrogen loading rates (NLRs) revealed that nitrogen removal efficiency (NRE) increases with increase in HRT and was found optimal (89 %) at HRT of 2 days. Mass balance of nitrogen revealed that major fraction (74.1 %) of input nitrogen is converted into N2 gas followed by 11.2 % utilised in biomass synthesis. Attached growth media (AGM) in AHR contributed to an additional 15.4 % ammonium removal and reduced the sludge washout rate by 29 %. This also enhanced the sludge retention capacity of AHR and thus minimised the formation of nitrate in the treated effluent, which is one of the bottlenecks of anammox process. Process kinetics was also studied using various mathematical models. The mass balance model derived from total nitrogen was found most precise and predicted N2 gas with least error (1.68 ± 4.44 %). Model validation for substrate removal kinetics dictated comparatively higher correlation for Grau second-order model (0.952) than modified Stover-Kincannon model (0.920). The study concluded that owing to features of high biomass retention, less nitrate formation and consistently higher nitrogen removal efficiency, this reactor configuration is techno-economically most efficient and viable. The study opens the door for researchers and scientists for pilot-scale testing of AHR leading to its wide industrial application.

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“…(1)). Many studies have been conducted to investigate the anammox process in various configurations, and these studies have revealed distinct reactor performances (Strous et al, 1998;Jin et al, 2013a;Abbas et al, 2015;Yang et al, 2015). Recent years, anammox process has been applied in full-scale treatment of ammonium-rich wastewater such as sludge digested liquor (van der Star et al, 2007;Joss et al, 2009;van Hulle et al, 2010) and landfill leachate .…”

Section: Introductionmentioning

confidence: 98%

Response of performance of an anammox anaerobic baffled reactor (ABR) to changes in feeding regime

Chen

Guo

et al. 2015

Ecological Engineering

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Kinetics of nitrogen removal in pilot-scale internal-loop airlift bio-particle reactor for simultaneous partial nitrification and anaerobic ammonia oxidation

Cited by 26 publications

References 18 publications

Modeling the kinetics and cost performance index of high rate up‐flow anaerobic, anoxic, oxic bioreactor for meat wastewater treatment

Modeling the kinetics and cost performance index of high rate up‐flow anaerobic, anoxic, oxic bioreactor for meat wastewater treatment

A new mathematical model for nitrogen gas production with special emphasis on the role of attached growth media in anammox hybrid reactor

Response of performance of an anammox anaerobic baffled reactor (ABR) to changes in feeding regime

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