Resource Type

Journal Article 882

Year

2023 56

2022 59

2021 77

2020 55

2019 60

2018 58

2017 77

2016 66

2015 44

2014 27

2013 34

2012 27

2011 28

2010 26

2009 27

2008 24

2007 27

2006 18

2005 10

2004 20

open ︾

Keywords

development strategy 21

adsorption 11

2035 9

China 9

food security 6

renewable energy 6

sustainable development 6

Alzheimer’s disease 5

COVID-19 5

technology foresight 5

China Railway’s “Go Global” strategy 4

H2S 4

concrete 4

development 4

energy revolution 4

finite element method 4

numerical simulation 4

zeolite 4

16S rRNA 3

open ︾

Search scope:

排序： Display mode:

Adsorption of humic acid from aqueous solution on bilayer hexadecyltrimethyl ammonium bromide-modifiedzeolite

Yanhui ZHAN, Jianwei LIN, Yanling QIU, Naiyun GAO, Zhiliang ZHU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 65-75 doi: 10.1007/s11783-010-0277-z

Abstract: Surfactant-modified natural zeolites (SMNZ) with different coverage types were prepared by loading hexadecyltrimethylammonium bromide (HTAB) onto the surface of a natural zeolite.Results indicate that the adsorbent SMNZ exhibited a higher affinity toward HA than the natural zeoliteCalculated maximum HA adsorption capacities for SMNZ with bilayer HTAB coverage at pH 5.5 and 7.5 wereResults show that HTAB-modified natural zeolite is a promising adsorbent for removal of HA from aqueous

Keywords： bilayer <bold>sbold>urfactant-modified zeolite     hexadecyltrimethyl ammonium bromide (HTAB)     adsorption    

HTML PDF Collect

<bold>Enhanced disinfection of bold><bold>Escherichia colibold> <bold>and bacteriophageMS2 in water using a copper and silver loaded titanium dioxide nanowire membranebold>

Guiying RAO, Kristen S. BRASTAD, Qianyi ZHANG, Rebecca ROBINSON, Zhen HE, Ying LI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0854-x

Abstract: A novel photocatalytic Ag-Cu-TiO nanowire membrane was fabricated. Bacteria and virus disinfection was improved by co-depositing Ag and Cu onto membrane. Synergetic photocatalytic effects and free metal ions of Ag and Cu contribute to disinfection. 7.68 log removal of and 4.02 log removal of bacteriophage MS2 were achieved. Titanium dioxide (TiO ) is a widely used photocatalyst that has been demonstrated for microorganism disinfection in drinking water. In this study, a new material with a novel structure, silver and copper loaded TiO nanowire membrane (Cu-Ag-TiO ) was prepared and evaluated for its efficiency to inactivate and bacteriophage MS2. Enhanced photo-activated bactericidal and virucidal activities were obtained by the Cu-Ag-TiO membrane than by the TiO , Ag-TiO and Cu-TiO membranes under both dark and UV light illumination. The better performance was attributed to the synergies of enhanced membrane photoactivity by loading silver and copper on the membrane and the synergistic effect between the free silver and copper ions in water. At the end of a 30 min test of dead-end filtration under 254 nm UV irradiation, the Cu-Ag-TiO membrane was able to obtain an removal of 7.68 log and bacteriophage MS2 removal of 4.02 log, which have met the US EPA standard. The free metal ions coming off the membrane have concentrations of less than 10 ppb in the water effluent, far below the US EPA maximum contaminant level for silver and copper ions in drinking water. Therefore, the photo-activated disinfection by the Cu-Ag-TiO membrane is a viable technique for meeting drinking water treatment standards of microbiological water purifiers.

Keywords： Photo-activated disinfection     Titanium dioxide     Nanowire membrane     Silver     Copper    

HTML PDF Collect

<bold>Chemical poison and regeneration of SCR catalysts for NObold><bold>xbold><bold> removal from stationary sourcesbold>

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 413-427 doi: 10.1007/s11783-016-0832-3

Abstract: Selective catalytic reduction (SCR) of NO with NH is an effective technique to remove NO from stationary sources, such as coal-fired power plant and industrial boilers. Some of elements in the fly ash deactivate the catalyst due to strong chemisorptions on the active sites. The poisons may act by simply blocking active sites or alter the adsorption behaviors of reactants and products by an electronic interaction. This review is mainly focused on the chemical poisoning on V O -based catalysts, environmental-benign catalysts and low temperature catalysts. Several common poisons including alkali/alkaline earth metals, SO and heavy metals etc. are referred and their poisoning mechanisms on catalysts are discussed. The regeneration methods of poisoned catalysts and the development of poison-resistance catalysts are also compared and analyzed. Finally, future research directions in developing poisoning resistance catalysts and facile efficient regeneration methods for SCR catalysts are proposed.

Keywords： flue gas     DeNOx     SCR catalyst     poison and regeneration    

HTML PDF Collect

Implementation and performance evaluation of advance metering infrastructure for Borneo-Wide Power Grid

HALDAR,Duaa Fatima S. KHAN

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 192-211 doi: 10.1007/s11708-016-0438-2

Abstract: In this paper, a supervisory computer network for Borneo-Wide Power Grid system have been proposed and implemented, which includes a renewable power generation and advanced metering infrastructure. An Internet-based communication network running on multiprotocol label switching (MPLS) has been implemented for a smart power grid, with the addition of the renewable energy monitoring system. The centralized supervisory control and data acquisition systems (SCADA) are replaced by a wide area monitoring system(WAMS) comprising of a phasor measurement unit (PMU). The implemented communication network used advanced metering infrastructure that operates on worldwide interoperability for microwave access (WiMAX), wireless fidelity (Wi-Fi) and low power Wi-Fi, which are proposed for the distribution systems of Sarawak Energy. The proposed wide area network (WAN) is simulated using OPNET Modeler and the results are compared with the existing WAN used by Sarawak Energy.

Keywords： system (WAMS)     worldwide interoperability for microwave access (WiMAX)     synchronous digital hierarchy <bold>(bold>SDH)    

HTML PDF Collect

The effect of capping with natural and modified zeolites on the release of phosphorus and organic contaminants

Shujuan SUN, Lei WANG, Suiliang HUANG, Teng TU, Hongwen SUN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 308-313 doi: 10.1007/s11705-010-0561-2

Abstract: A microcosm system that included river sediment, water and different zeolite capping materials (naturalzeolite, surfactant-modified zeolite (SMZ), or aluminum modified zeolite (AMZ)) was designed to studyHowever, for controlling the release of phenol from the sediment, aluminum modified zeolite was the mostefficient material, whereas no effects were observed when natural zeolite or SMZ were used.The different capabilities of the zeolite materials for controlling the release of different organic

Keywords： sediment     capping     natural zeolite     modified zeolite     phosphorus    

HTML PDF Collect

Ionic strength directed self-assembled polyelectrolyte single-bilayer membrane for low-pressure nanofiltration

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 699-708 doi: 10.1007/s11705-021-2093-3

Abstract: procedure is described for the preparation of nanofiltration membranes consisting of only a single bilayerinfluence of background ionic strength as well as membrane substrate properties on the formation of single-bilayer

Keywords： layer-by-layer self-assembly     single bilayer     nanofiltration membrane     desalination    

HTML PDF Collect

A modified neural learning algorithm for online rotor resistance estimation in vector controlled induction

CHITRA,S. HIMAVATHI

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 22-30 doi: 10.1007/s11708-014-0339-1

Abstract: In this paper, a novel modified neural algorithm has been identified for the online estimation of rotor

Keywords： neural networks     back propagation (BP)     rotor resistance estimators     vector control     induction motor    

HTML PDF Collect

A Cu-modified active carbon fiber significantly promoted HS and PH simultaneous removal at a low reaction

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1425-3

Abstract:

• Cu0.15-ACF performs the best for H2S and PH<

Keywords： ACF     H2S     PH3     Cu     Low temperature     Simultaneous removal    

HTML PDF Collect

Factors affecting the formation of zeolite seed layers and the effects of seed layers on the growth ofzeolite silicalite-1 membranes

ZHANG Xiongfu, WANG Jinqu, LIU Hai′ou, WANG Anjie

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 172-177 doi: 10.1007/s11705-007-0032-6

Abstract: With this method of seeded secondary synthesis of zeolite membranes, the quality of a membrane mainly

Keywords： silicalite-1     α-A1O     growth     seeding ethanol     quality    

HTML PDF Collect

CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating

Longli BO, Jianbo LIAO, Yucai ZHANG, Xiaohui WANG, Quan YANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 395-402 doi: 10.1007/s11783-012-0417-8

Abstract: typical toxic volatile organic compound, was oxidized through a fixed bed reaction chamber containing zeolite-supportedcopper oxide (CuO/zeolite) catalyst mixed with silicon carbide (SiC), an excellent microwave-absorbing

Keywords： microwave     catalytic oxidation     CuO/zeolite catalyst     silicon carbide (SiC)     toluene    

HTML PDF Collect

Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 86-98 doi: 10.1007/s11709-021-0793-x

Abstract: Natural zeolite (NZ) is a relatively abundant mineral resource and in this research, the microstructureResults showed that increasing the zeolite content decreases the unconfined strength, elastic modulusHowever, at the later ages, increasing the zeolite content increases unconfined strength as well as the

Keywords： plastic concrete     sulfate resistance     natural zeolite     triaxial compression test     SEM     permeability    

HTML PDF Collect

Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-CeO

Zeinab JAMALZADEH, Mohammad HAGHIGHI, Nazli ASGARI

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 365-381 doi: 10.1007/s11783-013-0520-5

Abstract: work, xylene removal from waste gas streams was investigated via catalytic oxidation over Pd/carbon-zeoliteActivated carbon was obtained from pine cone chemically activated using ZnCl and modified by H PO .Natural zeolite of clinoptilolite was modified by acid treatment with HCl, while nano-ceria was synthesizedMixed supports of carbon-zeolite and carbon-ceria were prepared and palladium was dispersed over them

Keywords： Pd/carbon-CeO2     Pd/carbon-zeolite     pine cone     ZnCl2     catalytic oxidation     xylene    

HTML PDF Collect

Photocatalytic degradation of omethoate using NaY zeolite-supported TiO

Dishun ZHAO, Jialei WANG, Zhigang ZHANG, Juan ZHANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 206-210 doi: 10.1007/s11705-009-0053-4

Abstract: The degradation of omethoate was conducted using H O as oxidant, TiO supported on NaY zeolite as photocatalystThe effect of the calcination temperature of the photocatalyst, the amount of TiO loaded on NaY zeoliteThe results show that TiO /NaY zeolite photocatalyst prepared by sol-gel method had good photocatalysisfollows: the calcination temperature of the photocatalyst is 550°C,the amount of TiO loaded on NaY zeolite

Keywords： TiO2     NaY zeolite     photocatalytic degradation     omethoate    

HTML PDF Collect

Catalytic fast pyrolysis of Kraft lignin with HZSM-5 zeolite for producing aromatic hydrocarbons

Xiangyu LI, Lu SU, Yujue WANG, Yanqing YU, Chengwen WANG, Xiaoliang LI, Zhihua WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 295-303 doi: 10.1007/s11783-012-0410-2

Abstract: Catalytic fast pyrolysis (CFP) of Kraft lignins with HZSM-5 zeolite for producing aromatics was investigated

Keywords： lignin     catalytic fast pyrolysis     HZSM-5     zeolite     aromatic hydrocarbon    

HTML PDF Collect

Atomistic simulations for adsorption and separation of flue gas in MFI zeolite and MFI/MCM-41 micro/mesoporous

Shengchi ZHUO, Yongmin HUANG, Jun HU, Honglai LIU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 264-273 doi: 10.1007/s11705-010-1007-6

Abstract: Adsorption of pure CO and N and separation of CO /N mixture in MFI zeolite and MFI/MCM-41 micro/mesoporous

Keywords： adsorption     diffusion     CO2     flue gas     zeolite     micro/mesoporous composite    

HTML PDF Collect

Title Author Date Type Operation

Adsorption of humic acid from aqueous solution on bilayer hexadecyltrimethyl ammonium bromide-modifiedzeolite

Yanhui ZHAN, Jianwei LIN, Yanling QIU, Naiyun GAO, Zhiliang ZHU

Journal Article

<bold>Enhanced disinfection of bold><bold>Escherichia colibold> <bold>and bacteriophageMS2 in water using a copper and silver loaded titanium dioxide nanowire membranebold>

Guiying RAO, Kristen S. BRASTAD, Qianyi ZHANG, Rebecca ROBINSON, Zhen HE, Ying LI

Journal Article

<bold>Chemical poison and regeneration of SCR catalysts for NObold><bold>xbold><bold> removal from stationary sourcesbold>

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

Journal Article

Implementation and performance evaluation of advance metering infrastructure for Borneo-Wide Power Grid

HALDAR,Duaa Fatima S. KHAN

Journal Article

The effect of capping with natural and modified zeolites on the release of phosphorus and organic contaminants

Shujuan SUN, Lei WANG, Suiliang HUANG, Teng TU, Hongwen SUN

Journal Article

Ionic strength directed self-assembled polyelectrolyte single-bilayer membrane for low-pressure nanofiltration

Journal Article

A modified neural learning algorithm for online rotor resistance estimation in vector controlled induction

CHITRA,S. HIMAVATHI

Journal Article

A Cu-modified active carbon fiber significantly promoted HS and PH simultaneous removal at a low reaction

Journal Article

Factors affecting the formation of zeolite seed layers and the effects of seed layers on the growth ofzeolite silicalite-1 membranes

ZHANG Xiongfu, WANG Jinqu, LIU Hai′ou, WANG Anjie

Journal Article

CuO/zeolite catalyzed oxidation of gaseous toluene under microwave heating

Longli BO, Jianbo LIAO, Yucai ZHANG, Xiaohui WANG, Quan YANG

Journal Article

Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic

Journal Article

Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-CeO

Zeinab JAMALZADEH, Mohammad HAGHIGHI, Nazli ASGARI

Journal Article

Photocatalytic degradation of omethoate using NaY zeolite-supported TiO

Dishun ZHAO, Jialei WANG, Zhigang ZHANG, Juan ZHANG

Journal Article

Catalytic fast pyrolysis of Kraft lignin with HZSM-5 zeolite for producing aromatic hydrocarbons

Xiangyu LI, Lu SU, Yujue WANG, Yanqing YU, Chengwen WANG, Xiaoliang LI, Zhihua WANG

Journal Article

Atomistic simulations for adsorption and separation of flue gas in MFI zeolite and MFI/MCM-41 micro/mesoporous

Shengchi ZHUO, Yongmin HUANG, Jun HU, Honglai LIU

Journal Article