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Achievement of high rate nitritation with aerobic granular sludge reactors enhanced by sludge recirculation

Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 528-533 doi: 10.1007/s11783-014-0641-5

Abstract: High strength synthetic wastewaters and reject water were tested with similar performance.stable effluent for Anammox has been obtained using the desired TAN setpoint (i.e. 50% of influent ammoniumimplemented control loops and validated in a previous publication was used to investigate the effects of the ammoniumincrease of the biomass concentration in the reactor, which in turn resulted in the achievement of highThe model predicted an enhancement of stable full nitritation at higher ammonium concentrations in the

Keywords： partial nitrification     reject water     high strength ammonium wastewater     closed-loop control    

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Enabling nickel ferrocyanide nanoparticles for high-performance ammonium ion storage

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 226-235 doi: 10.1007/s11705-022-2198-3

Abstract: Prussian blue and its analogs are extensively investigated as a cathode for ammonium-ion batteries.An increase in the ammonium-ion diffusion coefficient and ionic/electron conductivity based on kineticinvestigations accounts for their high performance.sub>2Fe(CN)6/multiwalled carbon nanotube composite presents a long cycling life and highFinally, our study reports a desirable material for ammonium-ion batteries and provides a practical approach

Keywords： nickel ferrocyanides     NH4+     electrochemistry     Prussian blue     aqueous ammonium ion    

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Enhanced methane recovery and exoelectrogen-methanogen evolution from low-strength wastewater in an up-flow

Zechong Guo, Lei Gao, Ling Wang, Wenzong Liu, Aijie Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1074-3

Abstract:

Methane yield increased 22 times from low-strength wastewater by

Keywords： Low-strength wastewater     Methane production     Conductive filler     Microbial community structure    

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Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-richwastewater

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 48-56 doi: 10.1007/s11783-011-0305-7

Abstract: investigated in a redox stratified membrane biofilm reactor (RSMBR) under oxygen limited condition to treat ammonium-richwastewater.Applying a high ammonia loading together with oxygen limitation was found to be an effective way to start

Keywords： ammonium-rich wastewater     membrane biofilm reactor     nitrification     redox stratification     shortcut nitrogen    

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Slender reinforced concrete shear walls with high-strength concrete boundary elements

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 138-151 doi: 10.1007/s11709-022-0897-y

Abstract: to the advancements in the field of concrete materials over the past few decades, concrete mixes of highcompressive strength, commonly referred to as high-strength concrete (HSC), have been developed.The finite-element model of a conventional normal-strength concrete (NSC) prototype wall was validatedThe HSC wall exhibited improved strength and stiffness, and thereby, allowed reduction in the longitudinalreinforcement area and size of the boundary elements for the same strength of the conventional wall.

Keywords： slender walls     high-strength concrete     rectangular and barbell-shaped walls     cold joints    

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Data driven models for compressive strength prediction of concrete at high temperatures

Mahmood AKBARI, Vahid JAFARI DELIGANI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 311-321 doi: 10.1007/s11709-019-0593-8

Abstract: nearest neighbor models based on collection of 207 laboratory tests, are investigated for compressive strengthprediction of concrete at high temperature.standard and demonstrate the suitability of using the data driven models to predict the compressive strengthat high temperature.

Keywords： data driven model     compressive strength     concrete     high temperature    

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Flexural behavior of high-strength, steel-reinforced, and prestressed concrete beams

Qing JIANG, Hanqin WANG, Xun CHONG, Yulong FENG, Xianguo YE

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 227-243 doi: 10.1007/s11709-020-0687-3

Abstract: To study the flexural behavior of prestressed concrete beams with high-strength steel reinforcement andhigh-strength concrete and improve the crack width calculation method for flexural components with suchThe failure modes, flexural strength, ductility, and crack width of the specimens were analyzed.Therefore, the new formula calculates the crack width more accurately in high-strength concrete and high-strengthThis study provides an important reference for the development of high-strength concrete and high-strength

Keywords： high-strength steel reinforcement     high-strength concrete     flexural behavior     crack width    

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A numerical study of prestressed high strength steel tubular members

Michaela GKANTOU, Marios THEOFANOUS, Charalampos BANIOTOPOULOS

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 10-22 doi: 10.1007/s11709-019-0547-1

Abstract: The structural behavior of prestressed high strength steel (HSS) tubular members is investigated throughThe effect of the presence or absence of grouting on the strength and ductility of the members is also

Keywords： finite element     prestressing     tubular members     grout     high strength steel    

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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： oxidizing archaea (AOA)     Complete ammonia oxidizing (comammox) bacteria     Dissimilatory nitrate reduction to ammonium    

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Calculation methods of the crack width and deformation for concrete beams with high-strength steel bars

Jianmin ZHOU, Shuo CHEN, Yang CHEN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 3,   Pages 316-324 doi: 10.1007/s11709-013-0211-0

Abstract: Three groups of concrete beams reinforced with high-strength steel bars were tested, and the crack width

Keywords： concrete beam     high-strength steel bar     crack width     deformation    

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Enhanced biohydrogen generation from organic wastewater containing N H 4 + by phototrophic bacteria Rhodobacter

Guanghong ZHENG, Zhuhui KANG, Yifan QIAN, Lei WANG,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 387-392 doi: 10.1007/s11783-009-0154-9

Abstract: Haifa RAJHI,Daniel PUYOL,Mirna C. MARTÍNEZ,Emiliano E. DÍAZ,José L. SANZ. [J]. Front. Environ. Sci. Eng., 2016, 10(3): 513-521.Yongtao LV,Xuan CHEN,Lei WANG,Kai JU,Xiaoqiang CHEN,Rui MIAO,Xudong WANG. [J]. Front. Environ. Sci. Eng., 2016, 10(2): 390-398.Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ. [J]. Front. Environ. Sci. Eng., 2015, 9(3): 528-533.Wei LI, Xiaowen DING, Min LIU, Yuewen GUO, Lei LIU. [J]. Front Envir Sci Eng, 2012, 6(6): 892-900.Guochen ZHENG, Jianzheng LI, Feng ZHAO, Liguo ZHANG, Li WEI, Qiaoying BAN, Yongsheng ZHAO. [J]. Front Envir Sci Eng, 2012, 6(1): 125-130.Hailong LIN, Weiguang LI, Changhong GUO, Sihang QU, Nanqi REN. [J]. Front Envir Sci Eng Chin, 2011, 5(4): 519-525.Daijun ZHANG, Cui BAI, Ting TANG, Qing YANG. [J]. Front Envir Sci Eng Chin, 2011, 5(2): 291-297.Yanhui ZHAN, Jianwei LIN, Yanling QIU, Naiyun GAO, Zhiliang ZHU. [J]. Front Envir Sci Eng Chin, 2011, 5(1): 65-75.Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO. [J]. Front Envir Sci Eng Chin, 2011, 5(1): 48-56.Bo WANG, Wei WAN, Jianlong WANG, . [J]. Front.Environ.Sci.Eng., 2009, 3(4): 380-386.GUO Jinsong, YANG Guohong, FANG Fang, QIN Yu. [J]. Front.Environ.Sci.Eng., 2008, 2(4): 439-445.GENG Bing, ZHU Yanfang, JIN Zhaohui, LI Tielong, KANG Haiyan, WANG Shuaima. [J]. Front.Environ.Sci.Eng., 2007, 1(3): 357-361.WU Deyi, HU Zhanbo, WANG Xinze, HE Shengbing, KONG Hainan. [J]. Front.Environ.Sci.Eng., 2007, 1(2): 213-220.XU Zhengyong, YANG Zhaohui, ZENG Guangming, XIAO Yong, DENG Jiuhua. [J]. Front.Environ.Sci.Eng., 2007, 1(1): 43-48.

Keywords： ammonium     anoxygenic phototrophic bacterium     biohydrogen     glutamine auxotrophic     tofu wastewater    

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An experimental study on the flexural behavior of heavily steel reinforced beams with high-strength concrete

Yasser SHARIFI, Ali Akbar MAGHSOUDI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 46-56 doi: 10.1007/s11709-014-0237-y

Abstract: In recent years, an emerging technology termed high-strength concrete (HSC) has become popular in constructionPresent study describes an experimental research on the behavior of high-strength concrete beams in ultimateTests are reported in this study on the flexural behavior of high-strength reinforced concrete (HSRC)The beams were made from concrete having compressive strength of 66.81–77.72 N/mm and percentage reinforcement

Keywords： high-strength concrete (HSC) members     flexural behavior     reinforced concrete     experimental results     ultimate    

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State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 569-585 doi: 10.1007/s11709-020-0607-6

Abstract: With the recent development of material science, high strength steel (HSS) has become a practical solution

Keywords： High strength steel     bolted connection     bearing behavior     design codes    

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Performance assessment of Alccofine with silica fume, fly ash and slag for development of high strength

Shivang D. JAYSWAL; Mahesh MUNGULE

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 576-588 doi: 10.1007/s11709-022-0826-0

Abstract: material, whereas fly ash (FA) and slag have been identified as economical materials with long term strengthThe strength values and stress-strain curve for control and BM specimens are obtained at 7, 28, 56, andThe assessment based on strength activity index, k-value method and strength estimation model confirmsthat AL, despite lower pozzolanic activity, contributes to strength gain, due to reduced dilution effectThe observations from the study identify enhanced strength gain, improved elastic modulus and higher

Keywords： Alccofine     high strength mortar     efficiency factor     dilution effect    

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Behavior and strength of headed stud shear connectors in ultra-high performance concrete of composite

Jianan QI, Yuqing HU, Jingquan WANG, Wenchao LI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1138-1149 doi: 10.1007/s11709-019-0542-6

Abstract: experimental and numerical investigation on the static behavior of headed stud shear connectors in ultra-highobserved on the concrete slab, indicating that UHPC slab exhibited good performance and could resist the highThe stiffness increment of a stud in UHPC was at least 60% higher than that in normal strength concreteEven if the stud height was reduced from 6 to 2 , there was no reduction in the shear strength of aShort stud shear connectors with an aspect ratio as small as 2 could develop full strength in UHPC slabs

Keywords： ultra-high performance concrete     studs     shear strength     FE analysis     push-out test    

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Title Author Date Type Operation

Achievement of high rate nitritation with aerobic granular sludge reactors enhanced by sludge recirculation

Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ

Journal Article

Enabling nickel ferrocyanide nanoparticles for high-performance ammonium ion storage

Journal Article

Enhanced methane recovery and exoelectrogen-methanogen evolution from low-strength wastewater in an up-flow

Zechong Guo, Lei Gao, Ling Wang, Wenzong Liu, Aijie Wang

Journal Article

Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-richwastewater

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Journal Article

Slender reinforced concrete shear walls with high-strength concrete boundary elements

Journal Article

Data driven models for compressive strength prediction of concrete at high temperatures

Mahmood AKBARI, Vahid JAFARI DELIGANI

Journal Article

Flexural behavior of high-strength, steel-reinforced, and prestressed concrete beams

Qing JIANG, Hanqin WANG, Xun CHONG, Yulong FENG, Xianguo YE

Journal Article

A numerical study of prestressed high strength steel tubular members

Michaela GKANTOU, Marios THEOFANOUS, Charalampos BANIOTOPOULOS

Journal Article

Overlooked nitrogen-cycling microorganisms in biological wastewater treatment

Journal Article

Calculation methods of the crack width and deformation for concrete beams with high-strength steel bars

Jianmin ZHOU, Shuo CHEN, Yang CHEN

Journal Article

Enhanced biohydrogen generation from organic wastewater containing N H 4 + by phototrophic bacteria Rhodobacter

Guanghong ZHENG, Zhuhui KANG, Yifan QIAN, Lei WANG,

Journal Article

An experimental study on the flexural behavior of heavily steel reinforced beams with high-strength concrete

Yasser SHARIFI, Ali Akbar MAGHSOUDI

Journal Article

State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

Journal Article

Performance assessment of Alccofine with silica fume, fly ash and slag for development of high strength

Shivang D. JAYSWAL; Mahesh MUNGULE

Journal Article

Behavior and strength of headed stud shear connectors in ultra-high performance concrete of composite

Jianan QI, Yuqing HU, Jingquan WANG, Wenchao LI

Journal Article