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Ozonation of the 5-fluorouracil anticancer drug and its prodrug capecitabine: Reaction kinetics, oxidationmechanisms, and residual toxicity

Siyu Chen, Lee Blaney, Ping Chen, Shanshan Deng, Mamatha Hopanna, Yixiang Bao, Gang Yu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1143-2

Abstract:

Reaction sites were confirmed by kinetics, Fukui

The olefin moiety was the main ozone reaction

Keywords： Ozone     5-fluorouracil     Capecitabine     Hydroxyl radicals     Chemotherapy agents     Toxicity    

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Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1255-8

Abstract: • Mechanisms of redox reactions of Fe- and Mn-oxides were discussed. • Oxidative reactions of Mn- andFe-oxides in complex systems were reviewed. • Reductive reaction of Fe(II)/iron oxides in complex systemsanalytical challenges associated with complex environments, there has been a limited understanding of the reactionkinetics and mechanisms in actual environmental systems, and most of the studies so far have only focusedis necessary to increase the complexity of model systems and examine both the involved interaction mechanisms

Keywords： Iron oxides     manganese oxides     reduction     oxidation     complex systems     reaction kinetics and mechanisms    

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Product identification and toxicity change during oxidation of methotrexate by ferrate and permanganate in water

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1501-8

Abstract:

• Oxidation of methotrexate by high-valent metal-oxo species was first explored.

Keywords： Anticancer drugs     High-valent metal-oxo species     Oxidation kinetics     Reaction mechanisms     Multi-endpoint    

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Modeling the aqueous reaction kinetics of estriol with ferrate

Cong LI, Naiyun GAO

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 39-45 doi: 10.1007/s11705-009-0098-4

Abstract: In this study the aqueous oxidation kinetics of estriol (E3) by potassium ferrate (K FeO ), a chemicalwith the solution pH, it was found that a first order model was not suitable to describe the oxidation reactionThis paper describes a theoretical representation that closely models the reaction kinetics of E3 andFrom this modeling, the reaction rates of HFe and Fe with E3 have been determined.

Keywords： ferrate     estriol     endocrine disruptor     kinetics     oxidation    

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Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1503-1515 doi: 10.1007/s11705-022-2294-4

Abstract: chemical potential gradient, stirring speed, and polymer type on sulfamethoxazole (SMX) crystal growth kineticsThe effect of the polymer on the crystal growth mechanisms of SMX was further analyzed by the two-stepIn the system containing PEG 6000, crystal growth is dominated by the surface reaction.However, in the system containing PEG 20000, crystal growth is dominated by both the surface reaction

Keywords： insoluble drugs     polymer     inhibition crystallization     crystal growth kinetics     DFT calculations    

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Influence of extracellular polymeric substances from activated sludge on the aggregation kinetics of

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1450-2

Abstract:

• The NPs aggregation in the electrolyte solution is consistent with the DLVO theory.

Keywords： Silver nanoparticles     Silver sulfide nanoparticles     Extracellular polymeric substances     Aggregation kinetics     Influence mechanisms    

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Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

WANG Jingang, HU Jinbang, WANG Daobin, DUAN Zhenya

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 266-270 doi: 10.1007/s11705-007-0048-y

Abstract: A kinetic model of the pozzolanic reaction for the preparation of flue gas desulfurizers from fly ashand Ca(OH) was deduced on the basis of solid phase reaction kinetic theory.The apparent reaction rate constants of the pozzolanic reaction could be raised by increasing the specific

Keywords： comparison     calculated     pozzolanic reaction     precision     preparation    

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Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 313-319 doi: 10.1007/s11783-009-0025-4

Abstract: The first-order kinetics and two-stage reaction (FKTSR) model of the LFG generation rate includes mechanismsof the nutrient balance for biochemical reaction in two main stages.The main parameters of the modified FKTSR model, including the LFG production potential (), the reactionrate constant in the first stage (), and the reaction rate constant in the second stage () of 64.746&The new model is better able to explain the mechanisms involved in LFG generation.

Keywords： landfill gas (LFG)     generation rate model     first-order kinetics     two-stage reaction     outflow function    

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Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 123-129 doi: 10.1007/s11705-013-1325-6

Abstract: The composite started to form at milling times of 9–10 h but the reaction was not complete.

Keywords： ball milling     nanocomposite     Al2O3     TiB2    

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Sorption mechanisms of diphenylarsinic acid on natural magnetite and siderite: Evidence from sorptionkinetics, sequential extraction and extended X-ray absorption fine-structure spectroscopy analysis

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1547-2

Abstract:

• DPAA sorption followed pseudo-secondary and intra-particle diffusion models.

Keywords： Diphenylarsinic acid (DPAA)     Sorption     Magnetite     Siderite     Sequential extraction     EXAFS    

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Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 186-193 doi: 10.1007/s11783-009-0016-5

Abstract: The reaction mechanisms of selective catalytic reduction (SCR) of nitric oxide (NO) by methane (CH )over solid superacid-based catalysts were proposed and testified by DRIFTS studies on transient reactionCatalysts derived from different supports would lead to different reaction pathways, and the acidityof solid superacid played an important role in determining the reaction mechanisms and the catalyticThe reaction involving NO moiety was likely to be determined by the step of reduction of NO.

Keywords： selective catalytic reduction (SCR)     nitric oxide (NO)     methane     support acidity     Br?nsted acid sites     NOy species    

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Kinetics of oxidation of dimethyl trisulfide by potassium permanganate in drinking water

Xiaoyan MA, Shifei HU, Hongyu WANG, Jun LI, Jing HUANG, Yun ZHANG, Weigang LU, Qingsong LI

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 171-176 doi: 10.1007/s11783-011-0319-1

Abstract: Reaction kinetics of dimethyl trisulfide oxidized by potassium permanganate in water had been studiedThe dimethyl trisulfide decomposition followed a second-order kinetics pattern with a rate constant

Keywords： odor and taste     oxidation reaction     reaction kinetics     water treatment    

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Simultaneous removal of trihalomethanes by bimetallic Ag/Zn: kinetics study

Ahmed H A DABWAN, Satoshi KANECO, Hideyuki KATSUMATA, Kiyoyuki EGUSA, Tohru SUZUKI, Kiyohisa OHTA,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 322-327 doi: 10.1007/s11705-009-0261-y

Abstract: The kinetics reaction rates and removal efficiencies of the THM compound mixtures, in the aqueous solutionsThe primary degradation reaction followed a pseudo-first-order kinetic law.characteristics of the THM compounds may become the most important parameters affecting the degradation kinetics

Keywords： reaction     first-order     dissociation     degradation reaction     aqueous    

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Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution

Haixia YUAN,Huxiang PAN,Jin SHI,Hongjing LI,Wenbo DONG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 583-590 doi: 10.1007/s11783-014-0691-8

Abstract: The kinetics of the reactions was achieved with nanosecond LFP.The rate constants of second-order reaction between with mono-CB, 1,2-diCB, 1,3-diCB and 1,4-diCB wereThe primary reaction pathway of CBzs with was gradual dechlorination, and the major products were Cl

Keywords： chlorinated benzenes     hydrated electron     electron beam     laser flash photolysis    

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Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 373-383 doi: 10.1007/s11705-020-1949-2

Abstract: The results revealed that the effect of internal diffusion on the initial reaction rate was more significantAs the reaction proceeded, the openings were gradually expanded and the specific surface area continuedHowever, with further reaction, disappearance of edge pores, melting and collapse of the pore structureThe intrinsic activation energy and reaction order based on the th-order model were 157.67 kJ∙mol andThus, temperature zones corresponding to chemical reaction and diffusion control were identified.

Keywords： coal char     CO2 gasification     internal diffusion     pore evolution    

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Title Author Date Type Operation

Ozonation of the 5-fluorouracil anticancer drug and its prodrug capecitabine: Reaction kinetics, oxidationmechanisms, and residual toxicity

Siyu Chen, Lee Blaney, Ping Chen, Shanshan Deng, Mamatha Hopanna, Yixiang Bao, Gang Yu

Journal Article

Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Journal Article

Product identification and toxicity change during oxidation of methotrexate by ferrate and permanganate in water

Journal Article

Modeling the aqueous reaction kinetics of estriol with ferrate

Cong LI, Naiyun GAO

Journal Article

Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Journal Article

Influence of extracellular polymeric substances from activated sludge on the aggregation kinetics of

Journal Article

Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

WANG Jingang, HU Jinbang, WANG Daobin, DUAN Zhenya

Journal Article

Modified landfill gas generation rate model of first-order kinetics and two-stage reaction

Jiajun CHEN , Hao WANG , Na ZHANG ,

Journal Article

Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Journal Article

Sorption mechanisms of diphenylarsinic acid on natural magnetite and siderite: Evidence from sorptionkinetics, sequential extraction and extended X-ray absorption fine-structure spectroscopy analysis

Journal Article

Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Journal Article

Kinetics of oxidation of dimethyl trisulfide by potassium permanganate in drinking water

Xiaoyan MA, Shifei HU, Hongyu WANG, Jun LI, Jing HUANG, Yun ZHANG, Weigang LU, Qingsong LI

Journal Article

Simultaneous removal of trihalomethanes by bimetallic Ag/Zn: kinetics study

Ahmed H A DABWAN, Satoshi KANECO, Hideyuki KATSUMATA, Kiyoyuki EGUSA, Tohru SUZUKI, Kiyohisa OHTA,

Journal Article

Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution

Haixia YUAN,Huxiang PAN,Jin SHI,Hongjing LI,Wenbo DONG

Journal Article

Reaction kinetics and internal diffusion of Zhundong char gasification with CO

Yun Liu, Jiangyuan Qu, Xuehui Wu, Kai Zhang, Yuan Zhang

Journal Article