... of the gas Hydrogensulfide 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 forhydrogensulfide 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- phaseoxidation systems Liquid- phaseoxidation systems convert H2S into elemental sulfur through redox reactions...
... 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...
... heterogeneous catalysts forliquidphase reactions using the hydrogen borrowing methodology Heterogeneous group 11 transition metals (Au, Ag and Cu) had been shown to be active in many liquidphase 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...
... several oxidation technologies such as sonochemical oxidation, photocatalytic oxidation, Fenton, chemical oxidation, wet air oxidation, sub-critical, critical and supercritical water oxidationprocesses ... 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 OXIDATIONPROCESSES WITH ULTRASONICATION FORREMOVAL OF ORANGE G HU HONGQIANG A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT...
... Membrane Reactors forHydrogen Production Processes Marcello De Falco Luigi Marrelli Gaetano Iaquaniello • • Editors Membrane Reactors forHydrogen 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 forhydrogen separation, operating in co-current mode, is shown Unfortunately, the integrated solution...
... acute hydrogensulfide 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: Hydrogensulfide ... of hydrogensulfide 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 hydrogensulfide formation ... hydrogensulfide 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...
... 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) forliquidphase microextraction (LPME) and zeolite imidazolate frameworks (ZIFs) for sorbent phasebased microextraction (SPBME) An introduction ... scope of the study………………………………………………21 Section Ionic Liquid- based LiquidPhase Microextraction……………………… 25 Chapter Ionic liquid based liquidphase microextraction of UV filters………….31 2.1 Introduction…………………………………………………………………...
... 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...
... fiber-protected liquid- phase microextraction HPLC high-performance liquid chromatography LC liquid chromatography LGLME liquid- gas -liquid microextraction LLE liquidliquid extraction LLLE liquid- liquid -liquid ... Lastly, ionic liquid- based LPME was investigated Ionic liquids, regarded as green solvents, were applied as the extraction phasefor 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...
... 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) Hydrogensulfide 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...
... determine which form of H S (H S, HS-, S2-, or the mixture of free organic sulfides) is active, the term hydrogensulfide 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, hydrogensulfide is not as polar ... Bian JS Neuroprotective effects of hydrogensulfide on Parkinson's disease rat models Aging Cell 2010, 9:135-146 Lu M, Liu YH, Ho CY, Tiong CX, Bian JS Hydrogensulfide regulates cAMP homeostasis...
... 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...
... 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...
... 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...
... 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...
... 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 processesfor 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 processesfor reporting incidents Because of the need to have preparations...
... by the vegetation, processes like phytovolatilization, phytoaccumulation and plant metabolic transformation have to be considered as potentially signicant removalprocessesfor organic contaminants ... unsaturated zone to form Fe(III), which may in turn act as electron acceptor foroxidation 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...
... 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 forliquid 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...
... 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 liquidphase 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...