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Formation of disinfection by-products during sodium hypochlorite cleaning of fouled membranes from membrane

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1389-3

Abstract:

•HAAs was dominant among the DBPs of interest.

Keywords： MBR     Biofouling     EPS     Chemical cleaning     DBPs     CLSM    

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Using loose nanofiltration membrane for lake water treatment: A pilot study

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1362-6

Abstract:

• A pilot study was conducted for drinking water treatment using loose NF membranes.

Keywords： Nanofiltration     Drinking water     Membrane fouling     Aluminum carryover     Chemical cleaning    

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Synthesis of novel magneto-hybrid polyoxometalate composite membrane with simultaneous photocatalytic self-cleaning

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1450-1459 doi: 10.1007/s11705-023-2310-3

Abstract: migration toward the polyethersulfone (PES) membrane surface under a magnetic field to enhance the self-cleaningmagneto-HPOM nanocomposite improve the hydrophilicity, separation performance, antifouling and self-cleaningThis study revealed a novel approach to fabricating membranes with high antifouling and self-cleaning

Keywords： magneto-hybrid polyoxometalate nanocomposite     composite membrane     antifouling     self-cleaning     magnetic    

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Performance of landfill leachate treatment system with disc-tube reverse osmosis units

WANG Baozhen, LIU Shuo, LIU Yanping, LI Xiujin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 24-31 doi: 10.1007/s11783-008-0024-x

Abstract: The removal rate of chemical oxygen demand (COD), total organic carbon (TOC), electrical conductivityEffective methods had been adopted to control membrane fouling, of which chemical cleaning is of utmostAt present, the 1st stage cleaning cycle by Cleaner A and Cleaner C is conducted every 100 and 500 h,

Keywords： chemical cleaning     product     organic     nitrogen     Effective    

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A New Multifunction Lube Oil for Weapons with Excellent Performances in Cleaning, Lubricating and Protecting

Feng Weisun,Wang Mengyan

Strategic Study of CAE 2000, Volume 2, Issue 4,   Pages 53-58

Abstract: all the main problems were settled down and the lube oil for weapons with excellent performances in cleaning

Keywords： multifunction weapon oil     base oil     additive     cleaning     lubricating     protecting    

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A thermodynamic study of the removal of HCl and H

Joseph LEE, Bo FENG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 67-83 doi: 10.1007/s11705-011-1162-4

Abstract: Advanced integrated-gasification combined-cycle (IGCC) and integrated-gasification fuel cell (IFGC) systems require high-temperature sorbents that are capable of removing hydrogen chloride and hydrogen sulfide from coal derived gases to very low levels. HCl and H S are highly reactive, corrosive, and toxic gases that must be removed to meet stringent environmental regulations, to protect power generation equipment and to control the emissions of contaminants. The thermodynamic behavior of 13 sorbents for the removal of HCl and H S under various conditions including: initial toxic gas concentration (1–10000 ppm), operating pressure (0.1–11 Mpa), temperature (300 K–1500 K), and the presence of H O were investigated. The correlation between HCl and H S was also examined. Thermodynamic calculations were carried out for the reactions of the 13 sorbents using a FactSage 5.2 software package based on free energy minimization. The sorbents, Na CO , NaHCO , K CO , and CaO are capable of completely removing chlorine at high temperatures (up to ~1240 K) and at high pressures. Water vapor did not have any significant effects on the dechlorination capability of the sorbents. Nine of the sorbents namely; Cu O, Na CO , NaHCO , K CO , CaO, ZnO, MnO, FeO, and PbO, were determined to have great potential as desulfurization sorbents. Cu O and ZnO had the best performance in terms of the optimum operating temperature. The addition of water vapor to the reactant gas produces a slightly detrimental effect on most of the sorbents, but FeO exhibited the worst performance with a reduction in the maximum operating temperature of about 428 K. The dechlorination performance of the alkali sorbents was not affected by the presence of H S in the reactions. However, the desulfurization capability of some sorbents was greatly affected by the presence of HCl. Particularly, the performance of Cu O was significantly reduced when HCl was present, but the performance of FeO improved remarkably. The thermodynamic results gathered are valuable for the developments of better sorbents.

Keywords： syngas cleaning     sorbent     desulfurization     dechlorination    

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Special issue on “Green chemical process and intensification”

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 11,   Pages 1533-1535 doi: 10.1007/s11705-022-2263-y

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Special Issue for the Future Chemical Engineering Scholars of Global Chinese Chemical Engineering Symposium

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 775-776 doi: 10.1007/s11705-022-2172-0

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Insight of chemical environmental risk and its management from the vinyl chloride accident

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 4, doi: 10.1007/s11783-023-1652-x

Abstract: Finally, this accident suggests that further efforts should be taken to bridge the gap between chemical

Keywords： Vinyl chloride     Combustion     Chemical safety management     Environmental risk     Emerging contaminants    

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Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1728-7

Abstract:

● A higher sulfur content reduced the curing rate of Cr in glass.

Keywords： Dechlorinated fly ash     SO3     Heavy metal     Chemical speciation     Glass solidification    

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Study on the Formation and Elimination of Coarse Grains in Cast Steel

Zou Anquan,Deng Peiran

Strategic Study of CAE 2005, Volume 7, Issue 4,   Pages 79-82

Abstract: a results of too high casting temperature and the premature trunk opening in water explosion blast cleaning

Keywords： cast steel     coarse grain     water explosion blast cleaning     measures of elimination    

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New Trend of Forest Chemical Industry in China

Song Zhanqian

Strategic Study of CAE 2001, Volume 3, Issue 2,   Pages 1-6

Abstract:

Forest chemical industry can produce various useful products by chemical processing of forest resourcesThe present conditiobns of the forest chemical industry in China was reviewed in this paper.

Keywords： forest chemical industry     forest resource     chemical processing    

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nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1550-7

Abstract:

• A fine fibre (40–60 nm diameter) interlayer (~1 µm thickness) was electrospun.

Keywords： Forward osmosis     Electro-spinning     Interfacial polymerisation     Fouling     Polyvinylidene fluoride    

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Evaluation of precipitation behavior of zirconium molybdate hydrate

Liang ZHANG, Masayuki TAKEUCHI, Tsutomu KOIZUMI, Izumi HIRASAWA

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 65-71 doi: 10.1007/s11705-013-1314-9

Abstract: In the dissolution step of spent nuclear fuel, there is a world-concern problem that zirconium molybdate hydrate precipitates as a byproduct, and accumulates in some reprocessing equipments. In order to prevent this accumulation, we have developed a new method based on the controlled reaction crystallization of zirconium molybdate hydrate (ZMH) in the reprocessing solution, followed by solid liquid separation. In order to measure the particle size of ZMH, batch crystallization experiments were conducted by varying nitric acid concentration and operating temperature. In result, almost all particle sizes scatter around 1 μm on average, despite the higher concentration of nitric aid and operating temperature, and then small particles grow up as an aggregate sticking to the crystallizer. Moreover, polymorph and color changing were observed by varying the concentration of nitric acid and reaction time. These results suggest that crystal color and adhesiveness are closely related to the particle size of ZMH. And the control of nitric acid concentration and small particle growth would be the useful technique to prevent the ZMH sticking.

Keywords： spent nuclear fuel     zirconium molybdate hydrate     cleaning method     accumulation    

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Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1412-8

Abstract:

•The history of biological and artificial water channels is reviewed.

Keywords： Aquaporins     Artificial water channels     Biomimetic membranes     Chemical separation and water purification    

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Title Author Date Type Operation

Formation of disinfection by-products during sodium hypochlorite cleaning of fouled membranes from membrane

Journal Article

Using loose nanofiltration membrane for lake water treatment: A pilot study

Journal Article

Synthesis of novel magneto-hybrid polyoxometalate composite membrane with simultaneous photocatalytic self-cleaning

Journal Article

Performance of landfill leachate treatment system with disc-tube reverse osmosis units

WANG Baozhen, LIU Shuo, LIU Yanping, LI Xiujin

Journal Article

A New Multifunction Lube Oil for Weapons with Excellent Performances in Cleaning, Lubricating and Protecting

Feng Weisun,Wang Mengyan

Journal Article

A thermodynamic study of the removal of HCl and H

Joseph LEE, Bo FENG

Journal Article

Special issue on “Green chemical process and intensification”

Journal Article

Special Issue for the Future Chemical Engineering Scholars of Global Chinese Chemical Engineering Symposium

Journal Article

Insight of chemical environmental risk and its management from the vinyl chloride accident

Journal Article

Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Journal Article

Study on the Formation and Elimination of Coarse Grains in Cast Steel

Zou Anquan,Deng Peiran

Journal Article

New Trend of Forest Chemical Industry in China

Song Zhanqian

Journal Article

nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

Journal Article

Evaluation of precipitation behavior of zirconium molybdate hydrate

Liang ZHANG, Masayuki TAKEUCHI, Tsutomu KOIZUMI, Izumi HIRASAWA

Journal Article

Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Journal Article