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PSA 2

alternative vehicle fuel 1

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compressed purified landfill gas (CPLG) 1

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hydrogen purification 1

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Pressure swing adsorption/membrane hybrid processes for hydrogen purification with a high recovery

Baojun Li,Gaohong He,Xiaobin Jiang,Yan Dai,Xuehua Ruan

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2, Pages 255-264 doi: 10.1007/s11705-016-1567-1

Abstract: )-membrane system (a PSA unit followed by a membrane separation unit) and a membrane-PSA system (a membraneseparation unit followed by a PSA unit).The PSA-membrane hybrid process achieved higher total H recoveries than the membrane-PSA hybrid processMeanwhile, the membrane-PSA hybrid process achieved a higher total H recovery (97.06%) than PSA-membranehybrid process (94.35%) at the same H concentration of PSA feed gas (62.57%).

Keywords： hydrogen purification PSA membrane separation hybrid process

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Detection and monitoring prostate specific antigen using nanotechnology approaches to biosensing

Grant Perry, Fernando Cortezon-Tamarit, Sofia I. Pascu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1, Pages 4-18 doi: 10.1007/s11705-019-1846-8

Abstract: The detection of the prostate specific antigen (PSA) in blood samples has been the preferred method forDespite the indications against its use in massive population screening, PSA still remains the best studiedThe latest developments in the use of nanomaterials towards the construction of PSA biosensors are reviewedBoth electrochemical and optical detection methods will be reviewed herein for the detection of PSA.

Keywords： biosensing immunosensor PSA prostate cancer fluorescence

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Bioenergy recovery from landfill gas: A case study in China

Wei WANG, Yuxiang LUO, Zhou DENG

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 1, Pages 20-31 doi: 10.1007/s11783-009-0012-9

Abstract: Landfill gas (LFG) utilization which means a synergy between environmental protection and bioenergy recovery was investigated in this study. Pressure swing adsorption technology was used in LFG purification, and laboratory experiment, pilot-scale test, and on-site demonstration were carried out in Shenzhen, China. In the laboratory experiment, A-type carbon molecular sieve was selected as the adsorbent by comparison of several other adsorbents. The optimal adsorption pressure and adsorption time were 0.25 MPa and 2 min, respectively, under which the product generation rate was 4.5 m /h and the methane concentration was above 90%. The process and optimization of the pilot-scale test were also reported in the paper. The product gas was of high quality compared with the National Standard of Compressed Natural Gas as Vehicle Fuel (GB18047-2000), when the air concentration in feed gas was under 10.96%. The demonstration project was composed of a collection system, production system, and utilization system. The drive performance, environmental protection performance, and economic feasibility of the product gas – as alternative fuel in passenger car, truck, and bulldozer – were tested, showing the feasibility technology for LFG utilization.

Keywords： landfill gas (LFG) compressed purified landfill gas (CPLG) pressure swing adsorption (PSA) alternative