liquid phase oxidation processes for hydrogen sulfide removal

A novel and cost effective hydrogen sulfide removal technology us

Ngày tải lên : 27/02/2015, 09:19

... of the gas Hydrogen sulfide can be dissolved in a liquid and then later removed from the liquid by reducing the pressure For more effective removal, liquids with higher solubility for H2S are ... oxides Metal oxides have been tested for hydrogen sulfide adsorption capacities Iron oxide is often used for H2S removal It can remove H2S by forming insoluble iron sulfides The chemical reactions ... problems, and how to dispose of foul regeneration air (McKinsey Zicarai, 2003) Liquid- phase oxidation systems Liquid- phase oxidation systems convert H2S into elemental sulfur through redox reactions...

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Supported group II transition metal catalysts in liquid phase reactions using borrowing hydrogen methodology 2

Ngày tải lên : 08/09/2015, 19:36

... December 2012 I have duly acknowledged all the sources of information which have been used in the thesis This thesis has also not been submitted for any degree in any university previously The content ... Jaenicke*, N-alkylation of amines by alcohols over alumina-entrapped Ag catalysts using “borrowing hydrogen methodology, J Catal 292.(2012) 130 Liu huihui Name Liu huihui Signature 28/12/2012 Date...

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Supported group II transition metal catalysts in liquid phase reactions using borrowing hydrogen methodology 1

Ngày tải lên : 09/09/2015, 10:14

... heterogeneous catalysts for liquid phase reactions using the hydrogen borrowing methodology Heterogeneous group 11 transition metals (Au, Ag and Cu) had been shown to be active in many liquid phase reactions ... reaction forms the substrate for the final hydrogenation step (Scheme 1-5) The process can become catalytic if the dehydrogenation of the alcohol can be coupled with the hydrogenation of the newly formed ... phenol oxidation CuO/C, [126,127] methanol synthesis from H2/CO CuO/ZSM-5 [10] Ammonia oxidation to N2 and N2O Cu CO oxidation to CO2 Ethylene oxidation to EO Ag CuO/ZnO/Al2O3 [128] Benzene oxidation...

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Combination of advanced oxidation processes with ultrasonication for removal of orange g

Ngày tải lên : 03/10/2015, 20:58

... several oxidation technologies such as sonochemical oxidation, photocatalytic oxidation, Fenton, chemical oxidation, wet air oxidation, sub-critical, critical and supercritical water oxidation processes ... the sonochemical formation of hydroxyl radicals is followed by recombination processes, which lead to the formation of hydrogen peroxide The production of hydrogen peroxide therefore indicates ... COMBINATION OF ADVANCED OXIDATION PROCESSES WITH ULTRASONICATION FOR REMOVAL OF ORANGE G HU HONGQIANG A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT...

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membrane reactors for hydrogen production processes

Ngày tải lên : 01/04/2014, 10:34

... Membrane Reactors for Hydrogen Production Processes Marcello De Falco Luigi Marrelli Gaetano Iaquaniello • • Editors Membrane Reactors for Hydrogen Production Processes 123 Editors Dr ... useful compounds For example, in the case of steam reforming of light hydrocarbons for producing hydrogen, a pressure swing adsorption (PSA) step could be used for recovering pure hydrogen not permeated ... region In Fig 1.2, a draft of a reactor for methane steam reforming with multiple membrane tubes for hydrogen separation, operating in co-current mode, is shown Unfortunately, the integrated solution...

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Báo cáo y học: " Bench-to-bedside review: Hydrogen sulfide – the third gaseous transmitter: applications for critical care" pptx

Ngày tải lên : 13/08/2014, 11:23

... acute hydrogen sulfide inhalation: correlation with tissue sulfide concentrations in the rat brain, liver, lung, and nasal epithelium Toxicol Sci 2002, 65:18-25 Lowicka E, Beltowski J: Hydrogen sulfide ... of hydrogen sulfide in a rat model of regional myocardial I/R Shock 2009, 31:267-274 Collin M, Anuar FB, Murch O, Bhatia M, Moore PK, Thiemermann C: Inhibition of endogenous hydrogen sulfide formation ... hydrogen sulfide releasing derivative, on carrageenan-induced hindpaw oedema formation in the rat Eur J Pharmacol 2007, 569:149-154 Tamizhselvi R, Moore PK, Bhatia M: Inhibition of hydrogen sulfide...

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Development of ionic liquid based liquid phase microextraction, and zeolite imidazolate frameworks based sorbent phase based microextraction combined with chromatography for applications in environmental analysis

Ngày tải lên : 09/09/2015, 10:18

... tris(pentafluoroethyl)trifluorophosphate HPLC High performance liquid chromatography IL Ionic liquid Im Imidazolate Imi Imipramine LLE Liquid- liquid extraction LPME Liquid- phase microextraction LODs Limits of ... the development and application of ionic liquids (ILs) for liquid phase microextraction (LPME) and zeolite imidazolate frameworks (ZIFs) for sorbent phasebased microextraction (SPBME) An introduction ... scope of the study………………………………………………21 Section Ionic Liquid- based Liquid Phase Microextraction……………………… 25 Chapter Ionic liquid based liquid phase microextraction of UV filters………….31 2.1 Introduction…………………………………………………………………...

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Development and application of hollow fiber protected liquid phase microextraction for trace organic analysis

Ngày tải lên : 12/09/2015, 08:20

... sample phase (a1) A 0.1- or 0.2-mL aqueous acceptor phase (a2) was layered over the o phase After extraction for a prescribed time, an aliquot of the a2 phase was injected directly into an HPLC for ... donor phase into the organic phase and further into the acceptor phase without back-extraction to the organic phase again The acceptor phase can be directly transferred to an HPLC or CE system for ... concentration in the aqueous donor phase and equilibrium concentration in the aqueous acceptor phase, respectively Va1, Vo, and Va2 are the phase volumes for the respective phases, κ1 and κ2 are the distribution...

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Development of liquid phase microextraction techniques combined with chromatography and electrophoresis for applications in environmental analysis

Ngày tải lên : 14/09/2015, 11:45

... fiber-protected liquid- phase microextraction HPLC high-performance liquid chromatography LC liquid chromatography LGLME liquid- gas -liquid microextraction LLE liquid liquid extraction LLLE liquid- liquid -liquid ... Lastly, ionic liquid- based LPME was investigated Ionic liquids, regarded as green solvents, were applied as the extraction phase for organochlorine pesticides in soil samples The ionic liquids were ... 5.5 References 100 Section Ionic liquid- based Liquid- phase Microextraction .102 Chapter Application of Headspace Ionic Liquid- based LPME for the Analysis of Organochlorine Pesticides...

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Role of hydrogen sulfide in the cardiovascular system implications for treatment of cardiovascular diseases

Ngày tải lên : 01/10/2015, 17:27

... before and weekly after surgery for the following weeks across all groups SBP of normal rats was tested before treatment to determine the baseline and once a week after treatment for weeks Before ... 302(1):C59-66 Liu YH, Lu M, Bian JS (2011) Hydrogen sulfide and renal ischemia Expert Reviews of Clinical Pharmacology 4(1):49-61 Liu YH, Yan CD, Bian JS (2011) Hydrogen sulfide: a novel signaling molecule ... normal medium for 20 h Early: cycles (NaHS 100 µM for each cycle separated by of recovery) Late: After preconditioning with NaHS (100 µM) for 30 min, cells were cultured in normal medium for 20 h...

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Protective effects of hydrogen sulfide against 6 hydroxydopamine induced cell injury implication for treatment of parkinsons disease

Ngày tải lên : 13/10/2015, 15:57

... determine which form of H S (H S, HS-, S2-, or the mixture of free organic sulfides) is active, the term hydrogen sulfide has been used to refer to the sum of the aforementioned forms [15] 1.3.2 ... odour With a structural formula of H-S-H, H S has a similar structure to that of water (H O) However, as sulfur is not nearly as electronegative as oxygen, therefore, hydrogen sulfide is not as polar ... Bian JS Neuroprotective effects of hydrogen sulfide on Parkinson's disease rat models Aging Cell 2010, 9:135-146 Lu M, Liu YH, Ho CY, Tiong CX, Bian JS Hydrogen sulfide regulates cAMP homeostasis...

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Liquid phase microextraction for the determination of acidic drugs and beta blockers in water samples

Ngày tải lên : 10/11/2015, 11:00

... CHAPTER Principles of Liquid- phase Microextraction 2.1 Extraction principles… ………………………………………………… 2.1.1 Two -phase liquid- phase microextraction……………………… … 2.1.2 Three -phase liquid- phase microextraction……………………… ... depends on: phase ratio (volume of acceptor phase to volume of donor phase) distribution ratio between donor phase and organic phase as well as between organic phase and acceptor phase Equations ... placed between the two aqueous phases (donor phase and acceptor phase) This allows organic phase to be thin, behaving like membrane One of these aqueous phases (donor phase) contains the analytes...

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Methane cracking over commercial carbons for hydrogen production

Ngày tải lên : 05/09/2013, 15:28

... initial methane conversion (50% for AC1, 45% for AC2 and 51% for AC3) and initial methane cracking rates (0.6mmol/min.g for AC1, 0.55mmol/min.g for AC2 and 0.623mmol/min.g for AC3) of activated carbons ... an application for decarbonization of fossil fuels, Int J Hydrogen Energy, 2001, 26, 1165-1175 [5] Muradov N.Z, From hydrocarbon to hydrogen carbon to hydrogen economy, Int J Hydrogen Energy, ... (160-201kJ/mol for ACs and 205-236kJ/mol for CB) The rate of methane cracking reaction is the sum of rates of carbon nuclei formation and carbon crystallites growth The rate of carbon nuclei formation...

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Báo cáo " Implementation of the digital phase-sensitive system for low signal measurement " docx

Ngày tải lên : 22/03/2014, 11:20

... in Fig.4 The same is for the output voltage from the second PSD (Fig.5) Phase shift (degree) Fig Output voltage X vs phase shift Phase shift (degree) Fig Output voltage Y vs phase shift Amplitude(V) ... is what we need to measure If the phases are shifted, than the output amplitude decreases The phase adjustment block is needed here In the twophase lock-in the phase shifts not play any role so ... single -phase lock-in and the second involving two PSD is called the two -phase lock-in [3] In the single -phase lock-in we have to adjust the phases of reference signal and signal to achieve the maximal output...

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Business Processes for Business Communities: Modeling Languages, Methods, Tools doc

Ngày tải lên : 23/03/2014, 14:20

... hierarchical level for the phased modeling of business processes and relevant information It deﬁnes the key processes that are considered in the framework of the modeling project The business processes ... modeling constructs necessary for the modeling activities just described 3.3 Modeling Constructs for Business Processes In the modeling of business processes, the individual processes and their rules ... platform for tool support and the scientiﬁc maturity with their approved mathematical foundations for wide practical use 1.2 Modeling Languages and Methods In a globalized world, business processes...

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Defining Incident Management Processes for CSIRTs: A Work in Progress pdf

Ngày tải lên : 23/03/2014, 23:21

... what processes they are already performing, what processes and process activities are being performed by whom (including third parties), what gaps exist in their processes, what part of the processes ... level of processes for all main incident management functions They also include various levels of subprocesses for some of these main functions.10 The first or top-level workflow diagram for the ... a secure infrastructure must be in place, along with processes and mechanisms for disseminating information and guidelines and processes for reporting incidents Because of the need to have preparations...

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Monitoring and assessing processes of organic chemicals removal in constructed wetlands doc

Ngày tải lên : 28/03/2014, 19:20

... by the vegetation, processes like phytovolatilization, phytoaccumulation and plant metabolic transformation have to be considered as potentially signicant removal processes for organic contaminants ... unsaturated zone to form Fe(III), which may in turn act as electron acceptor for oxidation reactions These processes may be important in case of water table uctuation leading to formation of Fe(III) ... demonstrated hydrocarbon removal rates of up to 90% in a constructed wetland with a porous mineral substrate matrix For instance, 10% of the removal was assigned to sorption processes, volatilization...

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prospects for hydrogen and fuel cells doc

Ngày tải lên : 31/03/2014, 12:20

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simulation of industrial processes for control engineers, elsevier (1999)

Ngày tải lên : 01/04/2014, 11:14

... opening, y liquid sizing coefficient at a given valve opening, equal to the valve capacity for water at 60*F liquid flow conductance for fully open valve constant of proportionality for fully ... valve friction coefficient for gas at high-pressure ratios valve friction coefficient for gas at high-pressure ratios at fully open valve friction coefficient for liquid flow = vCc, gas flow ... conductance to liquid flow conductance for the valve as far as the throat only Both conductances at a given valve opening = Cg/Cv,, ratio of gas sizing coefficient to liquid sizing coefficient, for the...

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multistage separation processes for chemical engineers

Ngày tải lên : 02/04/2014, 16:33

... and Phase Equilibria The separation processes discussed in this book involve interactions between vapor and liquid phases, or between two liquid phases, or between a vapor phase and two liquid phases ... obviously not obey the ideal gas law In a mixture forming a vapor phase and a liquid phase at equilibrium with each other, either one of the phases, or both phases, may approach ideal solution behavior ... availability of energy in a system for conversion to useful work In order for a system to perform work, it must have the capacity for spontaneous change toward equilibrium For instance, a system comprising...

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