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Immunoglobulin G 5

N2O 4

n-heptane 4

CH4 3

CO2 3

N 2

N-nitrosodimethylamine 2

N-nitrosodimethylamine (NDMA) 2

C/N ratio 2

COD 2

COD/N ratio 2

COVID-19 2

Capillary gel electrophoresis 2

Denitrification 2

Glycosylation 2

Greenhouse gas 2

H7N9 2

N 2

N235 2

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Nitrate removal to its fate in wetland mesocosm filled with sponge iron: Impact of influent COD/N ratio

Zhihao Si, Xinshan Song, Xin Cao, Yuhui Wang, Yifei Wang, Yufeng Zhao, Xiaoyan Ge, Awet Arefe Tesfahunegn

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1183-7

Abstract: CW-Fe allowed a high-performance of NO3‒-N removal at the COD/N ratio of 0.Higher COD/N resulted in lower chem-denitrification and higher bio-denitrification.to NH4+-N, at the COD/ratio of 0.An increase of the influent COD/N ratio resulted in lower chemical denitrification and higher bio-denitrificationAlthough chemical denitrification mediated by s-Fe0 led to an accumulation of NH4+-N at COD/N ratios

Keywords： Sponge iron     Wetland mesocosm     Electronic donor     Denitrification     COD/N ratio    

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Characterization of CANON reactor performance and microbial community shifts with elevated COD/N ratios

Yao Zhang, Yayi Wang, Yuan Yan, Haicheng Han, Min Wu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1095-6

Abstract:

COD/N at low ratios (0–0.82) improved N removals of CANON.

CANON performance decreased after COD/N up to/N.

AOB outcompeted at a high COD load led to CANON/N.

Keywords： CANON process     COD/N ratio     Anammox     Ammonia oxidizing bacteria     Aerobic heterotrophic bacteria    

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Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio (1.5:1 to 14:1) for simultaneous C & N removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1522-y

Abstract:

• Simultaneous C & N removal in Methammox occurs at wide C:N ratio.

Keywords： Methanogens     Biological Nitrogen Removal (BNR)     Simultaneous     Methammox     C:N ratio    

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and microbial communities in full-scale IFAS and MBBR municipal wastewater treatment plants at high COD:N ratio

Supaporn Phanwilai, Naluporn Kangwannarakul, Pongsak (Lek) Noophan, Tamao Kasahara, Akihiko Terada, Junko Munakata-Marr, Linda Ann Figueroa

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1374-2

Abstract: Abstract • Two IFAS and two MBBR full-scale systems (high COD:N ratio 8:1) were characterized. • HighInfluent COD to N ratios ranged from 8:1 to 15:1.The COD and BOD removal efficiencies were high (96%–98%); NH4+-N and TN removal efficiencies were moreThe extent of TN removal was higher at high SRT, high COD:N ratio and low DO concentration in the anoxicThe results from this work suggest that high SRT, high COD:N ratio, low DO concentration in anoxic tanks

Keywords： IFAS     MBBR     AnodkalnessTM K1 carrier     Polypropylene resin carrier     Sponge carrier    

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Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1047-6

Abstract: listitem>

MABR exhibits excellent TN removal performance for treating ROC with low C/Nratio.

Keywords： Membrane-aerated biofilm reactor (MABR)     Salinity     Total nitrogen     Reverse osmosis concentrate    

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Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 94-98

Abstract: Both of the concentrations of N and P in original water and in filtered water were also be monitored.The aim of the study is to figure out the alga's influence on the concentrations of N and P in theconstant, and both of them have no significant ecological stoichiometry of the N∶P ratio.We also made correlation-ship analysis between the N∶P ratio of water and biomass of alga.P ratio of water.

Keywords： the Dianchi Lake     blue-green alga     the N∶P ratio     variation     ecological stoichiometry    

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The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1366-2

Abstract:

•Bacterially-mediated coupled N and Fe processes examined in incubation

Keywords： Denitrification     N2O emission     Fe(II) oxidation     Fe/N ratio     Fe minerals    

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Coupling the porous conditional moment closure with the random pore model: applications to gasification and CO

N. SAULOV, C. R. CHODANKA, M. J. CLEARY, A. Y. KLIMENKO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 84-93 doi: 10.1007/s11705-011-1164-2

Abstract: Gasification of coal or biomass with in situ CO capture simultaneously allows production of clean hydrogen at relatively low cost and reduced emission of CO into the atmosphere. Clearly, this technology has a great potential for a future carbon constrained economy. Therefore, the development of a comprehensive, physically-based gasifier model is important. The sub-models that describe reactive transport processes in coal particles as well as in particles of CO sorbent material are among the key sub-models, which provide a necessary input for an overall gasifier model. Both coal and sorbent are materials that have complicated pore structures. The porous conditional moment closure (PCMC) model proves to be adequate for modeling reactive transport through porous media with fixed pore structure. Consumption of coal in the heterogeneous gasification reaction, however, widens the pores and reduces the surface area available for this reaction. At the same time, formation of a carbonate layer narrows the pores in the sorbent material and reduces the reaction rate of CO sorption. In both cases the pore structures are affected. Such changes are not taken into account in the existing PCMC model. In this study, we obtain the parameters of the diffusive tracer distribution based on the pore size distribution given by the widely applied random pore model (RPM), while coupling PCMC with RPM. Such coupling allows taking into account changes in pore structure caused by heterogeneous reactions and thus improves the accuracy of these key sub-models.

Keywords： gasification     CO2 capture     PCMC     RPM    

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Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewater

Shengjie Qiu, Jinjin Liu, Liang Zhang, Qiong Zhang, Yongzhen Peng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1318-x

Abstract: . • Extra NH4+-N from SFL was removed by anammox in anoxic phase. • Nitrogen removal efficiency of 92.51%was achieved in municipal wastewater. • The novel system could efficiently treat low COD/N municipalBiological nitrogen removal of wastewater with low COD/N ratio could be enhanced by the addition of wastedReal municipal wastewater with a low C/N ratio of 2.8–3.4 was treated in a sequencing batch reactor (

Keywords： Sludge fermentation liquid     Municipal wastewater     Advanced nitrogen removal     Short-cut nitrification     Partial anammox    

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Deciphering the effect of sodium dodecylbenzene sulfonate on up-flow anaerobic sludge blanket treatment of synthetic sulfate-containing wastewater

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1385-z

Abstract:

• UASB reactor can work efficiently with high COD/SO4

Keywords： Up-flow anaerobic sludge blanket     Organic sulfur     Sodium dodecylbenzene sulfonate     COD/SO42− ratio     Microbial community    

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Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method

Zilin HUANG,Gang WANG,Shaopeng WEI,Changhong LI,Yiming RONG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 242-249 doi: 10.1007/s11465-016-0397-7

Abstract: In this work, volumetric defect ratio was proposed as the criterion to describe the integrity of formingsub>f), and wire current (I), were optimized based on the analysis of signal-to-noise (S/N)ratio.

Keywords： process optimization     Taguchi method     signal-to-noise (S/N) ratio     volumetric defect ratio     laser hot wire    

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microflora and its bioaugmentation on anaerobic wastewater treatment for enhancing methane production and COD

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: 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 syntrophicThe inoculation of microflora B83, with a 1:9 ratio of bacteria number to that of the activated sludgeWith the same inoculation dosage of the microflora B83, COD removal in organic wastewater treatment processwas improved from 75.6% to 86.6%, while the specific methane production by COD removal was increased

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

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Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD) for decentralized wastewater treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1494-3

Abstract:

• A Passive Aeration Ditch was developed to treat decentralized wastewater.

Keywords： Decentralized wastewater     Passive aeration ditch     Biofilm formation     C/N ratio     Salinity     Model simulation    

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mechanisms of key functional microorganisms in the partial denitrification-anammox process induced by COD

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

Abstract: ItemContent>

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

Keywords： PD-anammox process     Nitrite accumulation     COD     Microbial interaction    

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A new fracture criterion for peridynamic and dual-horizon peridynamics

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 629-641 doi: 10.1007/s11709-017-0447-1

Abstract: A new fracture criterion based on the crack opening displacement for peridynamic (PD) and dual-horizon peridynamics (DH-PD) is proposed. When the relative deformation of the PD bond between the particles reaches the critical crack tip opening displacement of the fracture mechanics, we assume that the bond force vanishes. A new damage rule similar to the local damage rule in conventional PD is introduced to simulate fracture. The new formulation is developed for a linear elastic solid though the extension to nonlinear materials is straightforward. The performance of the new fracture criterion is demonstrated by four examples, i.e. a bilateral crack problem, double parallel crack, monoclinic crack and the double inclined crack. The results are compared to experimental data and the results obtained by other computational methods.

Keywords： Castigliano’s theorem     breaking energy     critical extension     XFEM     COD     PD-COD    

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Title Author Date Type Operation

Nitrate removal to its fate in wetland mesocosm filled with sponge iron: Impact of influent COD/N ratio

Zhihao Si, Xinshan Song, Xin Cao, Yuhui Wang, Yifei Wang, Yufeng Zhao, Xiaoyan Ge, Awet Arefe Tesfahunegn

Journal Article

Characterization of CANON reactor performance and microbial community shifts with elevated COD/N ratios

Yao Zhang, Yayi Wang, Yuan Yan, Haicheng Han, Min Wu

Journal Article

Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio (1.5:1 to 14:1) for simultaneous C & N removal

Journal Article

and microbial communities in full-scale IFAS and MBBR municipal wastewater treatment plants at high COD:N ratio

Supaporn Phanwilai, Naluporn Kangwannarakul, Pongsak (Lek) Noophan, Tamao Kasahara, Akihiko Terada, Junko Munakata-Marr, Linda Ann Figueroa

Journal Article

Nitrogen removal performance of municipal reverse osmosis concentrate with low C/N ratio by membrane-aerated

Xiao Quan, Kai Huang, Mei Li, Meichao Lan, Baoan Li

Journal Article

Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Journal Article

The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Journal Article

Coupling the porous conditional moment closure with the random pore model: applications to gasification and CO

N. SAULOV, C. R. CHODANKA, M. J. CLEARY, A. Y. KLIMENKO

Journal Article

Sludge fermentation liquid addition attained advanced nitrogen removal in low C/N ratio municipal wastewater

Shengjie Qiu, Jinjin Liu, Liang Zhang, Qiong Zhang, Yongzhen Peng

Journal Article

Deciphering the effect of sodium dodecylbenzene sulfonate on up-flow anaerobic sludge blanket treatment of synthetic sulfate-containing wastewater

Journal Article

Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method

Zilin HUANG,Gang WANG,Shaopeng WEI,Changhong LI,Yiming RONG

Journal Article

microflora and its bioaugmentation on anaerobic wastewater treatment for enhancing methane production and COD

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

Journal Article

Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD) for decentralized wastewater treatment

Journal Article

mechanisms of key functional microorganisms in the partial denitrification-anammox process induced by COD

Journal Article

A new fracture criterion for peridynamic and dual-horizon peridynamics

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article