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CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1539-2

Abstract:

• CeO2 doping significantly improved low-temperature NH3-SCR activity on FeTiO<i>xi>.

Keywords： NH3-SCR     CeO2 doping     Low-temperature NO<i>xi> removal     Improved redoxproperty     <i>In situi> XAFS analysis    

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Removal of elemental mercury by KI-impregnated clay

Boxiong SHEN,Jianhong CHEN,Ji CAI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 236-243 doi: 10.1007/s11783-014-0765-7

Abstract: This study described the use of clay impregnated by KI in gas phase elemental mercury (Hg ) removal inThe effects of KI loading, temperature, O , SO and H O on Hg removal were investigated using a fixedThe Hg removal efficiency of KI-clay with 3% KI loading could maintain at a high level (approximatelyO was demonstrated to assist the transfer of KI to I on the surface of KI-clay, which could react withsurface of the KI-clay.

Keywords： clay     elemental mercury     removal efficiency     potassium iodide     mechanism    

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Towards a respondent-preferred ki-anonymity model

Kok-Seng WONG,Myung Ho KIM

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 720-731 doi: 10.1631/FITEE.1400395

Abstract: Furthermore, we note that the level of anonymity (i.e., -anonymity) guaranteed by an agency cannot be

Keywords： Anonymous data collection     Respondent-preferred privacy protection     k-anonymity    

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NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1696-y

Abstract:

● Microwave-assisted catalytic NH3-SCR reaction over spinel oxides is carried out.

Keywords： Microwave field     Spinel oxides     NO<i>xi>     Selective catalytic reduction    

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Low-temperature caproate production, microbial diversity, and metabolic pathway in xylose anaerobic fermentation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1637-9

Abstract:

● Converting xylose to caproate under a low temperature of 20 °C by

Keywords： Xylose fermentation     Caproate     Low temperature     <i>Bifidobacteriumi>     FAB pathway     RBO pathway    

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Separation of

Wei Hou, Qingjun Zhang, Aiwu Zeng

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1169-1184 doi: 10.1007/s11705-020-2018-6

Abstract: study, vapor recompression and heat integration assisted distillation arrangements with either the lowhigh-pressure configuration presents unique advantages in terms of thermodynamic efficiency compared to the low-pressure

Keywords： <i>ni>-heptane/isobutanol     vapor recompression     heat integration     low and/or high-pressure options    

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Identification of pakchoi cultivars with low cadmium accumulation and soil factors that affect their

Lin WANG,Yingming XU,Yuebing SUN,Xuefeng LIANG,Dasong LIN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 877-887 doi: 10.1007/s11783-014-0676-7

Abstract: The selection and use of low-Cd-accumulating cultivar (LCAC) has been proposed as one of the promising2, were identified as LCACs because their shoot Cd concentrations were lower than 0.2 mg·kg under lowThe plot experiment further confirmed the consistency and genotypic stability of the low-Cd-accumulating

Keywords： pakchoi (<i>Brassica chinensisi> L.)     cadmium contamination     low-cadmium-accumulating cultivar (LCAC)     genotype variation     soil factor     translocation    

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and microbial community composition in pig manure and food waste anaerobic co-digesters operated at low

Conor Dennehy, Peadar G. Lawlor, Gillian E. Gardiner, Yan Jiang, Paul Cormican, Matthew S. McCabe, Xinmin Zhan

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0923-9

Abstract: syntrophic VFA oxidizers, such as suggests that VFA oxidation plays a role in digester operation at low

Keywords： Biogas     Sequencing     <i>Clocamonaceaei>     <i>Spiorchatetesi>     Isobutyrate     Biosafety    

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Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 617-633 doi: 10.1007/s11705-022-2258-8

Abstract: MnO<i>xi> and Sm–Mn catalysts were prepared with the coprecipitation method, and they showedexcellent activities and sulfur resistances for the selective catalytic reduction of NO<i>xi>

Keywords： MnO<i>xi>     Sm–Mn     catalyst     NH3-SCR     sulfur resistance    

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A low cost wearable optical-based goniometer for human joint monitoring

Chee Kian LIM, Zhiqiang LUO, I-Ming CHEN, Song Huat YEO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 13-22 doi: 10.1007/s11465-011-0201-7

Abstract:

Widely used in the fields of physical and occupational therapy, goniometers are indispensible when it comes to angular measurement of the human joint. In both fields, there is a need to measure the range of motion associated with various joints and muscle groups. For example, a goniometer may be used to help determine the current status of the range of motion in bend the arm at the elbow, bending the knee, or bending at the waist. The device can help to establish the range of motion at the beginning of the treatment series, and also allow the therapist to monitor progress during subsequent sessions. Most commonly found are the mechanical goniometers which are inexpensive but bulky. As the parts are mechanically linked, accuracy and resolution are largely limited. On the other hand, electronic and optical fiber-based goniometers promise better performance over its mechanical counterpart but due to higher cost and setup requirements does not make it an attractive proposition as well. In this paper, we present a reliable and non-intrusive design of an optical-based goniometer for human joint measurement. This device will allow continuous and long-term monitoring of human joint motion in everyday setting. The proposed device was benchmarked against mechanical goniometer and optical based motion capture system to validate its performance. From the empirical results, it has been proven that this design can be use as a robust and effective wearable joint monitoring device.

Keywords： optical     goniometer     human-joint measurement    

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Advances in Soft Materials for Sustainable Electronics Review

Moon Jong Han, Dong Ki Yoon

Engineering 2021, Volume 7, Issue 5,   Pages 564-580 doi: 10.1016/j.eng.2021.02.010

Abstract:

In the current shift from conventional fossil-fuel-based materials to renewable energy, ecofriendly materials have attracted extensive research interest due to their sustainability and biodegradable properties. The integration of sustainable materials in electronics provides industrial benefits from wasted bio-origin resources and preserves the environment. This review covers the use of sustainable materials as components in organic electronics, such as substrates, insulators, semiconductors, and conductors. We hope this review will stimulate interest in the potential and practical applications of sustainable materials for green and sustainable industry.

Keywords： Sustainable     Biodegradable     Soft materials     Organic electronics    

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Optimum design of a channel roughened by dimples to improve cooling performance

Abdus SAMAD, Ki-Don LEE, Kwang-Yong KIM, Jin-Hyuk KIM,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 262-268 doi: 10.1007/s11708-010-0012-2

Abstract: Staggered arrays of dimples imprinted on opposite surfaces of an internal flow channel have been formulated numerically to enhance turbulent heat transfer compromising with pressure drop. The channel is simulated with the help of three-dimensional Reynolds-averaged Navier-Stokes (RANS) analysis. Three non-dimensional design variables based on dimple size and channel dimensions and two objectives related to heat transfer and pressure drag have been considered for shape optimization. A weighted-sum method for multi-objective optimization is applied to integrate multiple objectives into a single objective and polynomial response surface approximation (RSA) coupling with a gradient based search algorithm has been implemented as optimization technique. By the present effort, heat transfer rate is increased much higher than pressure drop and the thermal performance also has shown improvement for the optimum design as compared to the reference one. The optimum design produces lower channel height, wider dimple spacing, and deeper dimple as compared to the reference one.

Keywords： Staggered     three-dimensional Reynolds-averaged     multi-objective optimization     reference     transfer    

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Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

Romain Chanson, Remi Dussart, Thomas Tillocher, P. Lefaucheux, Christian Dussarrat, Jean François de Marneffe

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 511-516 doi: 10.1007/s11705-019-1820-5

Abstract: The integration of porous organo-silicate low- materials has met a lot of technical challenges.In the present paper, we focus on porous SiOCH low- damage mitigation using cryogenic temperature soThe aim is to protect the porous low- from plasma-induced damage and keep the -value of the materialThe cryogenic temperature is used to condense a gas inside the porous low- material.

Keywords： low-<i>ki>     nanotechnology     micro-electronics     cryo-etching     plasma processing    

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Effects of SO

Quanming Liang, Jian Li, Hong He, Wenjun Liang, Tiejun Zhang, Xing Fan

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0926-6

Abstract: The CeO -V O -WO /TiO (CeO -VWT) catalysts were prepared by one-step and two-step impregnation methods. The effects of different loading of CeO and different preparation methods on De-NO activity of catalysts had been investigated. CeO helped to improve the De-NO activity and sulfur resistance. The optimal loading of CeO was 3% with the De-NO efficiency reached 89.9% at 140°C. The results showed that the De-NO activity of 3% CeO -VWT catalysts by one-step method was the same as two-step method basically and reached the level of industrial applications, the N selectivity of catalysts was more than 99.2% between 110°C and 320°C. In addition, CeO promoted the oxidation of NO to NO , which adsorbed on the Lewis acid site (V ═O) to form V ═NO and inspired the fast SCR reaction. Not only the thermal stability but also the De-NO activity of catalysts decreased with excess CeO competed with V O . Characterizations of catalysts were carried out by XRF, BET, XRD, TG and FT-IR. BET showed that the specific surface area of catalysts decreased with the loading of CeO increased, the active components content and specific surface area of catalysts decreased slightly after entering SO . Ammonium sulfate species were formed in poisoned catalyst which had been investigated by XRF, BET, TG and FT-IR. The largest loss rate of weight fraction was 0.024%·°C at 380°C–390°C, which was in accordance with the decomposition temperature of NH HSO and (NH ) SO .

Keywords： Low temperature SCR     De-NO<i>xi> activity     Sulfur resistance     Ammonium sulfate    

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Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selective

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 594-602 doi: 10.1007/s11705-017-1668-5

Abstract: A mild deposition method was used to fabricate Mn-based catalysts on a UiO-66 carrier for the selective catalytic reduction of NO by NH (NH -SCR). The catalyst with 8.5 wt-% MnO loading had the highest catalytic activity for NH -SCR with a wide temperature window (100–290 °C) for 90% NO conversion. Characterization of the prepared MnO /UiO-66 catalysts showed that the catalysts had the crystal structure and porosity of the UiO-66 carrier and that the manganese particles were well-distributed on the surface of the catalyst. X-ray photoelectron spectroscopy analysis showed that there are strong interactions between the MnO and the Zr oxide secondary building units of the UiO-66 which has a positive effect on the catalytic activity. The 8.5 wt-% MnO catalyst maintained excellent activity during a 24-h stability test and exhibited good resistance to SO poisoning.

Keywords： metal-organic framework     selective catalytic reduction     manganese oxides     deNO<i>xi>     SO   

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Title Author Date Type Operation

CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction

Journal Article

Removal of elemental mercury by KI-impregnated clay

Boxiong SHEN,Jianhong CHEN,Ji CAI

Journal Article

Towards a respondent-preferred ki-anonymity model

Kok-Seng WONG,Myung Ho KIM

Journal Article

NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Journal Article

Low-temperature caproate production, microbial diversity, and metabolic pathway in xylose anaerobic fermentation

Journal Article

Separation of

Wei Hou, Qingjun Zhang, Aiwu Zeng

Journal Article

Identification of pakchoi cultivars with low cadmium accumulation and soil factors that affect their

Lin WANG,Yingming XU,Yuebing SUN,Xuefeng LIANG,Dasong LIN

Journal Article

and microbial community composition in pig manure and food waste anaerobic co-digesters operated at low

Conor Dennehy, Peadar G. Lawlor, Gillian E. Gardiner, Yan Jiang, Paul Cormican, Matthew S. McCabe, Xinmin Zhan

Journal Article

Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Journal Article

A low cost wearable optical-based goniometer for human joint monitoring

Chee Kian LIM, Zhiqiang LUO, I-Ming CHEN, Song Huat YEO

Journal Article

Advances in Soft Materials for Sustainable Electronics

Moon Jong Han, Dong Ki Yoon

Journal Article

Optimum design of a channel roughened by dimples to improve cooling performance

Abdus SAMAD, Ki-Don LEE, Kwang-Yong KIM, Jin-Hyuk KIM,

Journal Article

Low-k integration: Gas screening for cryogenic etching and plasma damage mitigation

Romain Chanson, Remi Dussart, Thomas Tillocher, P. Lefaucheux, Christian Dussarrat, Jean François de Marneffe

Journal Article

Effects of SO

Quanming Liang, Jian Li, Hong He, Wenjun Liang, Tiejun Zhang, Xing Fan

Journal Article

Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selective

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Journal Article