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Nitrogen removal efficiencies 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: (RC) at Fukuoka, Japan, while MBBR WRRFs used KC carriers at South Adams County, Colorado, USA and spongeSponge carriers with high SSA maintained higher overall bacteria population than KC in MBBR systems.

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

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The development of roadside green swales in the Chinese Sponge City Program: Challenges and opportunities

Frontiers of Engineering Management   Pages 566-581 doi: 10.1007/s42524-023-0267-z

Abstract: has witnessed a surge in the adoption of roadside green swales, especially as part of the prestigious Sponge

Keywords： grass swale     infiltration swale     bioswale     wet swale     sponge city    

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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: Sponge iron (s-Fe0) is a porous metal with the potential to be an electron donor for denitrification.

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

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Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic melamine sponge

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1237-1246 doi: 10.1007/s11705-022-2140-8

Abstract: A Ag particle-coated and 1-dodecanethiol-modified melamine sponge (Ag-DDT-MS) was prepared through surface

Keywords： melamine sponge     oil-absorbing material     hydrophobic     oil-water separation     oil absorption capacity    

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Visible-light-driven heterostructured g-CN/Bi-TiO floating photocatalyst with enhanced charge carrier

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1417-3

Abstract:

• Bi doping in TiO2 enhanced the separation of photo-generated electron-hole.

Keywords： Bi doping     Visible light     Algal removal     Charge carrier separation    

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Superhydrophobic, mechanically flexible and recyclable reduced graphene oxide wrapped sponge for highly

Lijuan Qiu, Ruiyang Zhang, Ying Zhang, Chengjin Li, Qian Zhang, Ying Zhou

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 390-399 doi: 10.1007/s11705-018-1751-6

Abstract: In this paper, we have prepared a reduced graphene oxide (RGO) wrapped sponge with superhydrophobicityThe skeleton of this sponge is completely covered with RGO layers which are closely linked to the skeletonThis sponge has an abundant pore structure, high selectivity, good recyclability, low cost, and outstandingIn addition, this sponge can maintain excellent adsorption performance for various oils and organic solvents

Keywords： superhydrophobicity     mechanically flexibility     water/oil separation     reduced graphene oxide wrapped sponge    

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China’s Sponge City construction: A discussion on technical approaches

Haifeng Jia, Zheng Wang, Xiaoyue Zhen, Mike Clar, Shaw L. Yu

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0984-9

Abstract: Since 2014, China has been implementing the Sponge City Construction initiative, which represents anAccording to preliminary estimates, the total investment on the Sponge City Plan is roughly 100 to 150The Sponge City Plan (SCP) calls for the use of natural processes such as soil and vegetation as partSeveral key recommendations are proposed on Sponge City implementation strategy, Site-specific regulatoryGI research and development with the vast amount of relevant data and experiences generated from the Sponge

Keywords： Low impact development (LID)     Green infrastructure (GI)     Sponge City     Barriers     Construction strategies    

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Low Impact Development and Sponge City Construction for Urban Stormwater Management

Haifeng Jia, Shaw L. Yu, Huapeng Qin

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0989-4

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Charge-carrier photogeneration and extraction dynamics of polymer solar cells probed by a transient photocurrent

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 164-179 doi: 10.1007/s11705-020-1976-z

Abstract: photogenerated charge carriers within polymer-based bulk-heterojunction-type solar cells, the charge-carriercarriers, the external quantum efficiencies as well as the extraction quantum efficiencies of the charge-carrierSubsequently, the charge-carrier concentration-dependent mobility values were obtained, and they arediscussed in consideration of the additional influences of the charge-carrier losses from the deviceduring the charge-carrier extraction that also affects the photocurrent-trace shape.

Keywords： charge-carrier photogeneration     transient photocurrent     polymer solar cells     charge-carrier extraction     space    

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Multi-objective genetic algorithms based structural optimization and experimental investigation of the planet carrier

Pengxing YI,Lijian DONG,Tielin SHI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 354-367 doi: 10.1007/s11465-014-0319-5

Abstract:

To improve the dynamic performance and reduce the weight of the planet carrier in wind turbine gearboxFirstly, the design points’ distribution for the design variables of the planet carrier is establishedAs well, this method is applied to design and optimize the planet carrier in a 1.5 MW wind turbine gearboxCompared with the original design, the mass and the stress of the optimized planet carrier are respectivelyConsequently, the cost of planet carrier is greatly reduced and its stability is also improved.

Keywords： planet carrier     multi-objective optimization     genetic algorithms     wind turbine gearbox     modal experiment    

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Upgrading to urban water system 3.0 through sponge city construction

Nanqi Ren, Qian Wang, Qiuru Wang, Hong Huang, Xiuheng Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0960-4

Abstract: Urban water system 3.0 (Blue, gray, brown and yellow arrows represent water flow, wastewater flow, resource and energy respectively) Facing the pressure of excessive water consumption, high pollution load and rainstorm waterlogging, linear and centralized urban water system, system 2.0, as well as traditional governance measures gradually exposed characters of water-sensitivity, vulnerability and unsustainability, subsequently resulting in a full-blown crisis of water shortage, water pollution and waterlogging. To systematically relieve such crisis, we established healthy urban water-cycling system 3.0, in which decentralized sewerage systems, spongy infrastructures and ecological rivers play critical roles. Through unconventional water resource recycling, whole process control of pollutions and ecological restoration, system 3.0 with integrated management measures, is expected to fit for multiple purposes which involve environmental, ecological, economic and social benefits. With advantages of flexibility, resilience and sustainability, water system 3.0 will show an increasingly powerful vitality in the near future.

Keywords： Water crisis     Urban water system     Spongy city     Decentralized system     Multi-purpose    

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reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon adsorbent derived from loofah sponge

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-021-1491-6

Abstract:

• A high-efficiency N-doped porous carbon adsorbent for Cr(VI) was synthesized.

Keywords： Chromium(VI)     Nitrogen-doped porous carbon     Adsorption     Reduction     Loofah sponge    

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Effects of carrier-attached biofilm on oxygen transfer efficiency in a moving bed biofilm reactor

Yanling WEI,Xunfei YIN,Lu QI,Hongchen WANG,Yiwei GONG,Yaqian LUO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 569-577 doi: 10.1007/s11783-015-0822-x

Abstract: Three laboratory-scale moving bed biofilm reactors (MBBR) with different carrier filling ratios rangingfrom 40% to 60% were used to study the effects of carrier-attached biofilm on oxygen transfer efficiencyThese results were compared to αSOTE of wastewater with a clean carrier (no biofilm attached).conditions, αSOTE decreased by approximately 70% as compared to αSOTE of wastewater at a different carrier-fillingThis indicated that the biofilm attached to the carrier had a negative effect on αSOTE.

Keywords： carrier     biofilm     oxygen transfer efficiency     moving bed biofilm reactor    

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Effects of BTA2 as the third component on the charge carrier generation and recombination behavior of

Leijing Liu, Hao Zhang, Bo Xiao, Yang Liu, Bin Xu, Chen Wang, Shanpeng Wen, Erjun Zhou, Gang Chen, Chan Im, Wenjing Tian

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 127-137 doi: 10.1007/s11705-020-1936-7

Abstract: Effects of a benzotriazole (BTA)-based small molecule, BTA2, as the third component on the charge carrieraggravates the phase separation between the donor and the acceptor, which is disadvantageous to charge carrier

Keywords： third component     organic solar cells     charge carrier generation     charge carrier recombination     bimolecular    

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Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1726-1734 doi: 10.1007/s11705-022-2188-5

Abstract: Chemical looping reforming of methane is a novel and effective approach to convert methane to syngas, in which oxygen transfer is achieved by a redox material. Although lots of efforts have been made to develop high-performance redox materials, a few studies have focused on the redox kinetics. In this work, the kinetics of SrFeO3−δ–CaO∙MnO nanocomposite reduction by methane was investigated both on a thermo-gravimetric analyzer and in a packed-bed microreactor. During the methane reduction, combustion occurs before the partial oxidation and there exists a transition between them. The weight loss due to combustion increases, but the transition region becomes less inconspicuous as the reduction temperature increased. The weight loss associated with the partial oxidation is much larger than that with combustion. The rate of weight loss related to the partial oxidation is well fitted by the Avrami–Erofeyev equation with n = 3 (A3 model) with an activation energy of 59.8 kJ∙mol‒1. The rate law for the partial oxidation includes a solid conversion term whose expression is given by the A3 model and a methane pressure-dependent term represented by a power law. The partial oxidation is half order with respect to methane pressure. The proposed rate law could well predict the reduction kinetics; thus, it may be used to design and/or analyze a chemical looping reforming reactor.

Keywords： chemical looping reforming     SrFeO3−δ/CaO·MnO nanocomposite     reduction kinetics     Avrami–Erofeyev model     pressure-dependent term    

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Title Author Date Type Operation

Nitrogen removal efficiencies 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

The development of roadside green swales in the Chinese Sponge City Program: Challenges and opportunities

Journal Article

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

Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic melamine sponge

Journal Article

Visible-light-driven heterostructured g-CN/Bi-TiO floating photocatalyst with enhanced charge carrier

Journal Article

Superhydrophobic, mechanically flexible and recyclable reduced graphene oxide wrapped sponge for highly

Lijuan Qiu, Ruiyang Zhang, Ying Zhang, Chengjin Li, Qian Zhang, Ying Zhou

Journal Article

China’s Sponge City construction: A discussion on technical approaches

Haifeng Jia, Zheng Wang, Xiaoyue Zhen, Mike Clar, Shaw L. Yu

Journal Article

Low Impact Development and Sponge City Construction for Urban Stormwater Management

Haifeng Jia, Shaw L. Yu, Huapeng Qin

Journal Article

Charge-carrier photogeneration and extraction dynamics of polymer solar cells probed by a transient photocurrent

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Journal Article

Multi-objective genetic algorithms based structural optimization and experimental investigation of the planet carrier

Pengxing YI,Lijian DONG,Tielin SHI

Journal Article

Upgrading to urban water system 3.0 through sponge city construction

Nanqi Ren, Qian Wang, Qiuru Wang, Hong Huang, Xiuheng Wang

Journal Article

reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon adsorbent derived from loofah sponge

Journal Article

Effects of carrier-attached biofilm on oxygen transfer efficiency in a moving bed biofilm reactor

Yanling WEI,Xunfei YIN,Lu QI,Hongchen WANG,Yiwei GONG,Yaqian LUO

Journal Article

Effects of BTA2 as the third component on the charge carrier generation and recombination behavior of

Leijing Liu, Hao Zhang, Bo Xiao, Yang Liu, Bin Xu, Chen Wang, Shanpeng Wen, Erjun Zhou, Gang Chen, Chan Im, Wenjing Tian

Journal Article

Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Journal Article