Upflow anaerobic-microaerobic fixed biofilm reactor integrating methanogenesis with partial nitrification

Hussain, Abid; Lee, Jangho; Reid, Robertson; Lee, Hyung-Sool

doi:10.1016/j.cej.2018.05.013

Cited by 15 publications

(2 citation statements)

References 49 publications

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“…Energy-saving wastewater treatment plants have received increasing research attention [26]. Microaerobic wastewater treatment has the potential to reduce energy consumption and improve operational efficiency [27,28]. Required DO concentration in microaerobic reactors is as low as 0.3-1.0 mg•L −1 and can save aeration energy [29].…”

Section: Transcription Levels Of Dissimilatory Denitrification Pathwa...mentioning

confidence: 99%

Construction of Recombinant Magnetospirillum Strains for Nitrate Removal from Wastewater Based on Magnetic Adsorption

Zheng

Pang

et al. 2022

Processes

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Nitrate ion (NO3−) in wastewater is a major cause of pollution in aquatic environments worldwide. Magnetospirillum gryphiswaldense (MSR-1) has a complete dissimilatory denitrification pathway, converts NO3− in water into nitrogen (N2) and simultaneously removes ammonium ions (NH4+). We investigated and confirmed direct effects of regulatory protein factors Mg2046 and MgFnr on MSR-1 denitrification pathway by EMSAs and ChIP-qPCR assays. Corresponding mutant strains were constructed. Denitrification efficiency in synthetic wastewater medium during a 12-h cell growth period was significantly higher for mutant strain Δmgfnr (0.456 mmol·L−1·h−1) than for wild-type (0.362 mmol·L−1·h−1). Presence of magnetic particles (magnetosomes) in MSR-1 greatly facilitates collection and isolation of bacterial cells (and activated sludge) by addition of a magnetic field. The easy separation of magnetotactic bacteria, such as MSR-1 and Δmgfnr, from wastewater using magnetic fields is a unique feature that makes them promising candidates for practical application in wastewater treatment and sludge pretreatment.

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Section: Transcription Levels Of Dissimilatory Denitrification Pathwa...mentioning

confidence: 99%

Construction of Recombinant Magnetospirillum Strains for Nitrate Removal from Wastewater Based on Magnetic Adsorption

Zheng

Pang

et al. 2022

Processes

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“…The results showed that NH 4 + -N, COD, and TN removals were ranged from 71 % to 97 %, from 78 % to 96 %, and from 20 % to 60 %, respectively. Hussain et al [14] developed an anaerobic-microaerobic fixed biofilm (AMFB) reactor to study carbon removal simultaneously with ammonium oxidation in dilute domestic wastewater. The results demonstrated that AMFB reactor achieved the maximum 99 % COD removal efficiency at HRT of 24 h and almost all biochemical oxygen demand (BOD) was removed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Volume Loading Rate and C/N on Ship Domestic Sewage Treatment by Two Membrane Bioreactors

Cai

Zaidi

Sun

et al. 2019

Period. Polytech. Chem. Eng.

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Design of ship sewage treatment systems that not only satisfy the use of small space on board but also meets International Maritime Organisation (IMO) latest emission standards is still a challenging problem for ship industry. This study provides a comparative disquisition between two different MBR reactors i.e, air-lift multilevel circulation membrane reactor (AMCMBR) and anaerobic/anoxic/aerobic membrane reactor (AOA-MBR) for domestic sewage treatment. The influence of pollutants volume loading rate (VLR) and C/N on effluent chemical oxygen demand (COD), ammonium nitrogen (NH4+-N) and TN for marine domestic sewage was analyzed. The results revealed that AMCMBR showed better removal efficiencies for COD and TN than AOA-MBR. The volume of AMCMBR was only half of the AOA-MBR. In addition, high average value of mixed liquor volatile suspended solids (MLVSS)/mixed liquid suspended solids (MLSS) (i.e. 0.75) of AMCMBR indicated high biomass and good pollutants removal achieved by this reactor. An interesting phenomenon was found in the study regarding Urease activity for the two reactors. Urease activity for AMCMBR in different working conditions all exceeded AOA-MBR and there exist no clear difference of NR activities between AMCMBR and AOA-MBR except for low C/N ratio (i.e. 6 and 4). This phenomenon proved that AMCMBR has a greater performance for treating ship domestic wastewater.

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Anaerobic biofilm reactor: fundamentals and applications

Satya

Arrahmah

Setiadi

2022

Current Developments in Biotechnology and Bioengineering

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Upflow anaerobic-microaerobic fixed biofilm reactor integrating methanogenesis with partial nitrification

Cited by 15 publications

References 49 publications

Construction of Recombinant Magnetospirillum Strains for Nitrate Removal from Wastewater Based on Magnetic Adsorption

Construction of Recombinant Magnetospirillum Strains for Nitrate Removal from Wastewater Based on Magnetic Adsorption

Effect of Volume Loading Rate and C/N on Ship Domestic Sewage Treatment by Two Membrane Bioreactors

Anaerobic biofilm reactor: fundamentals and applications

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