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methane 17

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Overlooked nitrogen-cycling microorganisms in biological wastewater treatment

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1426-2

Abstract:

• AOA and comammox bacteria can be more abundant and active than AOB/NOB at WWTPs.

Keywords： Ammonia oxidizing archaea (AOA)     Complete ammonia oxidizing (comammox) bacteria     Dissimilatory nitratereduction to ammonium (DNRA) bacteria     Nitrate/nitrite-dependent anaerobic methane oxidizing (NOx-DAMO) microorganisms     Engineering application    

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A syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatmentfor enhancing methane production and COD removal

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0856-8

Abstract: Syntrophic propionate-oxidizing microflora B83 was enriched from anaerobic sludge.Methane yield and COD removal were enhanced by bioaugmentation of microflora B83.To enhance anaerobic wastewater treatment process for methane production and COD removal, a syntrophicpropionate-oxidizing microflora B83 was obtained from an anaerobic activated sludge by enrichment withenhancement of hydrogen-producing acetogens in the anaerobic wastewater treatment process had improved

Keywords： Anaerobic wastewater treatment     Methane production     Hydrogen-producing acetogenesis     Methanogenesis     Rate-limiting    

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of activated sludge aggregates using microelectrodes in completely autotrophic nitrogen removal over nitrite

Yongtao LV,Xuan CHEN,Lei WANG,Kai JU,Xiaoqiang CHEN,Rui MIAO,Xudong WANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 390-398 doi: 10.1007/s11783-015-0818-6

Abstract: a laboratory-scale sequencing batch reactor (SBR) for completely autotrophic nitrogen removal over nitriteThe FISH analysis revealed that aerobic ammonium-oxidizing bacteria (AerAOB) and anaerobic ammonium-oxidizingIn the outer layer of sludge aggregates (0–700 μm), nitrite-oxidizing bacteria (NOB) showed high activitywith 4.1 μmol·cm ·h of maximum nitrate production rate under the condition of DO concentration higher

Keywords： microelectrodes     CANON     aerobic ammonium-oxidizing bacteria     anaerobic ammonium-oxidizing bacteria     nitrite-oxidizing    

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Dissolved methane in anaerobic effluent: Emission or recovery?

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-022-1537-4

Abstract: Various anaerobic processes have been explored for the energy-efficient treatment of municipal wastewaterHowever, dissolved methane in anaerobic effluent appears to be a barrier towards the energy and carbonAlthough several dissolved methane recovery methods have been developed, their engineering feasibilityIn this perspective, we thus intend to offer additional insights into the cost-benefit of dissolved methane

Keywords： Anaerobic treatment     Municipal wastewater     Dissolved methane     Methane recovery     Carbon emission    

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The impact of ultrasonic treatment on activity of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria

Siqi Li, Min Zheng, Shuang Wu, Yu Xue, Yanchen Liu, Chengwen Wang, Xia Huang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1166-8

Abstract: . • Mechanical shearing is essential to inhibit nitrite oxidation.This study aims to reveal the effects of ultrasound on ammonia-oxidizing bacteria (AOB) and nitrite-oxidizingmechanical shearing could be a critical factor in achieving the nitritation with inhibitory effect on nitrite

Keywords： Ultrasonic treatment     Optimal control     Nitrifying bacteria     Mechanism analysis    

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New method for efficient control of hydrogen sulfide and methane in gravity sewers: Combination of NaOHand Nitrite

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1509-0

Abstract:

• The combination of NaOH and nitrite was used to control harmful gas

Keywords： Sewer corrosion     Sulfide control     Combination treatment     NaOH     Nitrite    

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Effects of nitrite on phosphate uptake in anaerobic-oxic process

LI Jie, XIONG Biyong, ZHANG Shude, YANG Hong, ZHANG Jie

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 39-42 doi: 10.1007/s11783-007-0007-3

Abstract: An anaerobic-oxic (A/O) biological phosphorus removal reactor was operated to study the effect of nitriteThe results indicated that in addition to oxygen and nitrate (DPB, nitrate denitrifying phosphorus removal), to some extent, nitrite could also serve as an electron acceptor to achieve nitrite denitrifying phosphorusphosphorus removal, but it could reduce the consumption of nitrate.Moreover, the data showed that the aerobic phosphate uptake of DPB was lower than that of anaerobic phosphorus-released

Keywords： effluent     PAOs     experiment     phosphate-accumulating     phosphorus removal    

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Unveiling the interaction mechanisms of key functional microorganisms in the partial denitrification-anammox

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1703-3

Abstract:

● The availability of PD-anammox was investigated with higher NO3––N concentration.

Keywords： PD-anammox process     Nitrite accumulation     COD     Microbial interaction    

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ALKALINE PRETREATMENT AND AIR MIXING FOR IMPROVEMENT OF METHANE PRODUCTION FROM ANAEROBIC CO-DIGESTION

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 424-436 doi: 10.15302/J-FASE-2023506

Abstract:

● Integration of alkaline pretreatment and air mixing for co-digestion was validated.

Keywords： sodium hydroxide     air injection     cumulative methane yield     kinetic modeling analysis     digestate    

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Modeling temperature and moisture dependent emissions of carbon dioxide and methane from drying dairy

Enzhu HU, Pakorn SUTITARNNONTR, Markus TULLER, Scott B. JONES

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 280-286 doi: 10.15302/J-FASE-2018215

Abstract: Greenhouse gas emissions due to biological degradation processes of animal wastes are significant sources of air pollution from agricultural areas. The major environmental controls on these microbe-induced gas fluxes are temperature and moisture content. The objective of this study was to model the effects of temperature and moisture content on emissions of CO and CH during the ambient drying process of dairy manure under controlled conditions. Gas emissions were continuously recorded over 15 d with paired fully automated closed dynamic chambers coupled with a Fourier Transformed Infrared gas analyzer. Water content and temperature were measured and monitored with capacitance sensors. In addition, on days 0, 3, 6, 9, 12 and 15, pH, moisture content, dissolved organic carbon and total carbon (TC) were determined. An empirical model derived from the Arrhenius equation confirmed high dependency of carbon emissions on temperature and moisture content. Results indicate that for the investigated dairy manure, 6.83% of TC was lost in the form of CO and 0.047% of TC was emitted as CH . Neglecting the effect of temperature, the moisture contents associated with maximum gas emissions were estimated as 0.75 and 0.79 g·g for CO and CH , respectively.

Keywords： carbon dioxide     dairy manure     methane     moisture     temperature    

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Degradation of polyacrylamide (PAM) and methane production by mesophilic and thermophilic anaerobic digestion

Mona Akbar, Muhammad Farooq Saleem Khan, Ling Qian, Hui Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1277-2

Abstract: . • Enhanced methane yield in presence of PAM during thermophilic and mesophilic AD. • PAM degradationFurthermore, it degrades slowly and can deteriorate methane yield during anaerobic digestion (AD).This study mainly focuses on PAM degradation and enhanced methane production from PAM-added sludge duringThe methane yield was almost 230 to 238.4 mL/g VSS on the 8th day in thermophilic AD but was 115.2 toPAM degradation but also boosted the organics release from the sludge with added PAM and gave higher methane

Keywords： Polyacrylamide (PAM) degradation     Acrylamide (AM)     Mesophilic anaerobic digestion     Thermophilic anaerobicdigestion     Methane production    

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Impact of food to microorganism ratio and alcohol ethoxylate dosage on methane production in treatmentof low-strength wastewater by a submerged anaerobic membrane bioreactor

Yulun Nie, Xike Tian, Zhaoxin Zhou, Yu-You Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0947-1

Abstract: The effects of food to microorganism (F/M) ratio and alcohol ethoxylate (AE) dosage on the methane productionpotential were investigated in treatment of low-strength wastewater by a submerged anaerobic membraneThe fate of AE and its acute and/or chronic impact on the anaerobic microbes were also analyzed.After long-term acclimation, anaerobic microbe could cope with the stress of AE by producing more EPSproduction activity of sludge and methane production potential.

Keywords： Anaerobic membrane bioreactor AnMBR     F/M ratio     Surfactant     Wastewater     Methane production     Influence    

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High-solid anaerobic digestion of sewage sludge: achievements and perspectives

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1364-4

Abstract:

• High-solid anaerobic digestion (HS-AD) of sewage sludge (SS) is overviewed

Keywords： High-solid effect     Anaerobic fermentation     Methane production     Biodegradability     Sludge treatment    

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Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobic

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1131-6

Abstract: itemcontent>

The existence of three-phase separator aggravated methane

Keywords： Anaerobic membrane bioreactor     Three-phase separator     Membrane fouling     Methane leakage     Sludge property    

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Effects of hydraulic retention time on nitrification activities and population dynamics of a conventional activated sludge system

Hongyan LI, Yu ZHANG, Min YANG, Yoichi KAMAGATA

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 43-48 doi: 10.1007/s11783-012-0397-8

Abstract: When the HRT was gradually decreased from 30 to 5 h, the specific ammonium-oxidizing rates (SAOR) variedbetween 0.32 and 0.45 kg (kg mixed liquor suspended solids (MLSS)·d) , and the specific nitrate-forming0.11 to 0.50 kg (kg MLSS·d) , showing that the decrease in HRT led to a significant increase in the nitriteAccording to fluorescence in situ hybridization (FISH) analysis results, the proportion of ammonia-oxidizingamong the total bacteria decreased from 33% to 15% with the decrease in HRT, whereas the fraction of nitrite-oxidizing

Keywords： ammonia-oxidizing bacteria     hydraulic retention time     nitrification activity     nitrite-oxidizing bacteria    

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Title Author Date Type Operation

Overlooked nitrogen-cycling microorganisms in biological wastewater treatment

Journal Article

A syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatmentfor enhancing methane production and COD removal

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

Journal Article

of activated sludge aggregates using microelectrodes in completely autotrophic nitrogen removal over nitrite

Yongtao LV,Xuan CHEN,Lei WANG,Kai JU,Xiaoqiang CHEN,Rui MIAO,Xudong WANG

Journal Article

Dissolved methane in anaerobic effluent: Emission or recovery?

Journal Article

The impact of ultrasonic treatment on activity of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria

Siqi Li, Min Zheng, Shuang Wu, Yu Xue, Yanchen Liu, Chengwen Wang, Xia Huang

Journal Article

New method for efficient control of hydrogen sulfide and methane in gravity sewers: Combination of NaOHand Nitrite

Journal Article

Effects of nitrite on phosphate uptake in anaerobic-oxic process

LI Jie, XIONG Biyong, ZHANG Shude, YANG Hong, ZHANG Jie

Journal Article

Unveiling the interaction mechanisms of key functional microorganisms in the partial denitrification-anammox

Journal Article

ALKALINE PRETREATMENT AND AIR MIXING FOR IMPROVEMENT OF METHANE PRODUCTION FROM ANAEROBIC CO-DIGESTION

Journal Article

Modeling temperature and moisture dependent emissions of carbon dioxide and methane from drying dairy

Enzhu HU, Pakorn SUTITARNNONTR, Markus TULLER, Scott B. JONES

Journal Article

Degradation of polyacrylamide (PAM) and methane production by mesophilic and thermophilic anaerobic digestion

Mona Akbar, Muhammad Farooq Saleem Khan, Ling Qian, Hui Wang

Journal Article

Impact of food to microorganism ratio and alcohol ethoxylate dosage on methane production in treatmentof low-strength wastewater by a submerged anaerobic membrane bioreactor

Yulun Nie, Xike Tian, Zhaoxin Zhou, Yu-You Li

Journal Article

High-solid anaerobic digestion of sewage sludge: achievements and perspectives

Journal Article

Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobic

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Journal Article

Effects of hydraulic retention time on nitrification activities and population dynamics of a conventional activated sludge system

Hongyan LI, Yu ZHANG, Min YANG, Yoichi KAMAGATA

Journal Article