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Study on the microwave-assisted extraction of polyphenols from tea

Liyun WANG, Peiyong QIN, Yan HU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 307-313 doi: 10.1007/s11705-009-0282-6

Abstract: others, it decreased the solid/liquid ratio from 1 ∶ 20 to 1 ∶ 12 g/mL without 90-min pre-leaching

Keywords： energy consumption     microwave-assisted extraction     optimum condition     pre-leaching     concentration    

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Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching

Yan SHAO,Haobo HOU,Guangxing WANG,Sha WAN,Min ZHOU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 192-200 doi: 10.1007/s11783-014-0719-0

Abstract: mineralogical characteristics and the distributions of metals in matrices, were tested by toxic characteristic leachingContinuous acid extraction was utilized to extract metal ions and characterize their leaching behavior

Keywords： municipal solid waste incineration (MSWI) fly ash     blast furnace slag     leaching behavior     Cr     Pb    

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Assessment of leaching behavior and human bioaccessibility of rare earth elements in typical hospital

Chunfeng Wang, Guanfei Chen, Yanchen Zhu, Dan Yao, Wanfeng Wang, Lianjun Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0946-2

Abstract: Leaching behavior and gastrointestinal bioaccessibility of rare earth elements (REEs) from hospital wasteIn the same ash sample, the leaching concentrations of individual REEs determined by the Toxicity CharacteristicLeaching Procedure (TCLP) were higher than those detected by the European standard protocol (EN-typetest), thereby suggesting that the low pH value of leaching solution was an important factor influencing

Keywords： Assessment     Rare earth elements     Leaching behavior     Bioaccessibility     Hospital waste    

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Investigation of Cu leaching from municipal solid waste incinerator bottom ash with a comprehensive approach

Jun YAO, Wenbing LI, Fangfang XIA, Jing WANG, Chengran FANG, Dongsheng SHEN

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 340-348 doi: 10.1007/s11708-010-0131-9

Abstract: This study used a comprehensive approach to characterize the leaching behavior of copper (Cu) from theThe batch titration procedure was used to determine the acid neutralizing capacity and Cu leaching asThe Cu leaching pattern was not only affected by dissolved organic carbon, it was also limited by itsThese findings provide an important insight into predicting the leaching behavior of Cu from the MSWI

Keywords： MSWI bottom ash     Cu leaching     batch titration procedure     SEP    

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The influence of curing conditions on the mechanical properties and leaching of inorganic polymers made

Remus I. Iacobescu, Valérie Cappuyns, Tinne Geens, Lubica Kriskova, Silviana Onisei, Peter T. Jones, Yiannis Pontikes

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 317-327 doi: 10.1007/s11705-017-1622-6

Abstract: This study reports on the impact of the curing conditions on the mechanical properties and leaching ofGeochemical modelling and two leaching tests were performed, the EA NEN 7375 tank test, and the BS ENResults show that Cu, Ni, Pb, Zn and As leaching occurred even at high pH, which varied between 10 andLeaching values obtained were below the requirements for non-shaped materials of Flemish legislation

Keywords： inorganic polymer     geochemical leaching modelling     heavy metals     recycling     non-ferrous fayalitic slag     curing    

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Reinforcement of the two-stage leaching of laterite ores using surfactants

Peiyu Zhang, Hairui Wang, Jingcheng Hao, Jiwei Cui

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 562-570 doi: 10.1007/s11705-020-1946-5

Abstract: A two-stage leaching process, namely, high-pressure acid leaching-atmospheric acid leaching, was usedThe leaching ratio of Ni was low because of adsorption and incomplete leaching.In this work, surfactants were used as additives to boost the leaching ratio of Ni.Leaching results showed that stearyl trimethyl ammonium chloride (STAC) apparently increased the leachingKinetics analysis indicated that the leaching process was controlled by chemical reaction.

Keywords： laterite ore     Ni     surfactant     acid leaching    

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Oxidative leaching kinetics of molybdenum-uranium ore in H

T. A. Lasheen, M. E. El-Ahmady, H. B. Hassib, A. S. Helal

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 95-102 doi: 10.1007/s11705-013-1317-6

Abstract: The leaching temperature, hydrogen peroxide concentration, sulfuric acid concentration, leaching timeThe leaching kinetics of molybdenum showed that the reaction rate of the leaching process is controlledThe leaching process follows the kinetic model 1 ? (1?temperature, concentrations of H O and H SO and the mesh size are the main factors that influence the leaching

Keywords： leaching of molybdenum     leaching of uranium     kinetics    

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Research and development of the continuous pressure acid leaching technology for the pretreatment of

Wang Jikun,Feng Guilin

Strategic Study of CAE 2009, Volume 11, Issue 5,   Pages 18-22

Abstract: Small-scale and half-industrialized tests show that direct pressure acid leaching of copper anode slimeThe trends of Ag, Se and Te in continuous leaching process are obviously different from those in discontinuousleaching process, and the leaching results are better than those of discontinuous pressure leaching

Keywords： copper anode slime     comprehensive use     pressure acid leaching     continous leaching process    

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Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN,Jianguo YU

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 216-223 doi: 10.1007/s11705-015-1518-2

Abstract: This resulted in a high aluminum leaching activity in the mechanothermally activated CS.

Keywords： coal spoil     mechanothermal compound activation     leaching    

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Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 376-382 doi: 10.1007/s11709-010-0086-2

Abstract: Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systemsvarious effects, such as support settlement due to live loads and material creep, temperature change, pre-tension

Keywords： tension system     glass wall     nonlinear analysis     pre-tensioning     second-order analysis    

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Leaching toxicity characteristics of municipal solid waste incineration bottom ash

Khamphe PHOUNGTHONG,Yi XIA,Hua ZHANG,Liming SHAO,Pinjing HE

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 399-411 doi: 10.1007/s11783-015-0819-5

Abstract: The physico-chemical properties and leaching behavior of MSWIBA were studied, and ecotoxicological testingIn addition, the cluster of these variables indicated similar leaching behaviors.Overall, the research demonstrated that the ecotoxicological risks resulting from MSWIBA leaching could

Keywords： Municipal solid waste incineration     bottom ash     alternative material     leaching tests     toxicity     Vibrio    

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A pre-compensation method of the systematic contouring error for repetitive command paths

D. L. ZHANG,Y. H. CHEN,Y. P. CHEN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 367-372 doi: 10.1007/s11465-015-0367-5

Abstract:

For a repetitive command path, pre-compensating the contouring error by modifying the command pathTo obtain the pre-compensation value with better accuracy, this paper proposes the use of a back propagationFurthermore, by using the extracted function, the contouring error can be easily pre-compensated.

Keywords： contouring error     pre-compensation     motion control system     back propagation (BP) neural network    

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Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 411-428 doi: 10.1007/s11709-023-0928-3

Abstract: In this study, ultrahigh-performance fiber-reinforced concrete (UHPFRC) used in a type B70 concrete sleeper is investigated experimentally and parametrically. The main parameters investigated are the steel fiber volume fractions (0%, 0.5%, 1%, and 1.5%). Under European standards, 35 UHPFRC sleepers are subjected to static bending tests at the center and rail seat sections, and the screw on the fastening system is pulled out. The first cracking load, failure load, failure mode, crack propagation, load–deflection curve, load–crack width, and failure load from these tests are measured and compared with those of a control sleeper manufactured using normal concrete C50. The accuracy of the parametric study is verified experimentally. Subsequently, the results of the study are applied to UHPFRC sleepers with different concrete volumes to investigate the effects of the properties of UHPFRC on their performance. Experimental and parametric study results show that the behavior of UHPFRC sleepers improves significantly when the amount of steel fiber in the mix is increased. Sleepers manufactured using UHPFRC with a steel fiber volume fraction of 1% and a concrete volume less than 25% that of standard sleeper B70 can be used under the same loads and requirements, which contributes positively to the cost and surrounding environment.

Keywords： pre-stressed concrete sleeper     ultrahigh performance fiber-reinforced concrete     pull-out test     static    

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Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting

John O’MALLEY, Hakim S. ABDELGADER,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1,   Pages 127-132 doi: 10.1007/s11709-010-0007-4

Abstract: Two-stage (pre-placed aggregate) concrete (TSC) consists of coarse aggregate, which is first deposited

Keywords： grout     pre-placed     concrete     two-stage concrete (TSC)    

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Leaching Mechanism of Slurry Electrolysis

Yang Xianwan,Zhang Yingjie,Deng Lunhao,Qiu Dingfan

Strategic Study of CAE 2000, Volume 2, Issue 6,   Pages 49-51

Abstract:

Leaching mechanism of refractory gold concentrate in slurry electrolysis process has been studied.It has been proved that the main way of lead leaching is chemical dissolution and chemical oxidation

Keywords： slurry electrolysis     leaching     mechanism    

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Title Author Date Type Operation

Study on the microwave-assisted extraction of polyphenols from tea

Liyun WANG, Peiyong QIN, Yan HU,

Journal Article

Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching

Yan SHAO,Haobo HOU,Guangxing WANG,Sha WAN,Min ZHOU

Journal Article

Assessment of leaching behavior and human bioaccessibility of rare earth elements in typical hospital

Chunfeng Wang, Guanfei Chen, Yanchen Zhu, Dan Yao, Wanfeng Wang, Lianjun Wang

Journal Article

Investigation of Cu leaching from municipal solid waste incinerator bottom ash with a comprehensive approach

Jun YAO, Wenbing LI, Fangfang XIA, Jing WANG, Chengran FANG, Dongsheng SHEN

Journal Article

The influence of curing conditions on the mechanical properties and leaching of inorganic polymers made

Remus I. Iacobescu, Valérie Cappuyns, Tinne Geens, Lubica Kriskova, Silviana Onisei, Peter T. Jones, Yiannis Pontikes

Journal Article

Reinforcement of the two-stage leaching of laterite ores using surfactants

Peiyu Zhang, Hairui Wang, Jingcheng Hao, Jiwei Cui

Journal Article

Oxidative leaching kinetics of molybdenum-uranium ore in H

T. A. Lasheen, M. E. El-Ahmady, H. B. Hassib, A. S. Helal

Journal Article

Research and development of the continuous pressure acid leaching technology for the pretreatment of

Wang Jikun,Feng Guilin

Journal Article

Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN,Jianguo YU

Journal Article

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Journal Article

Leaching toxicity characteristics of municipal solid waste incineration bottom ash

Khamphe PHOUNGTHONG,Yi XIA,Hua ZHANG,Liming SHAO,Pinjing HE

Journal Article

A pre-compensation method of the systematic contouring error for repetitive command paths

D. L. ZHANG,Y. H. CHEN,Y. P. CHEN

Journal Article

Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Journal Article

Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting

John O’MALLEY, Hakim S. ABDELGADER,

Journal Article

Leaching Mechanism of Slurry Electrolysis

Yang Xianwan,Zhang Yingjie,Deng Lunhao,Qiu Dingfan

Journal Article