alkanolamines for hydrogen sulfide and carbon dioxide removal

... performed study conception and design, experiments, interpretation of data, and manuscript drafting MM performed study design, experiments, and data acquisition and analysis EF, AL, RP, LR, and ... of carbon dioxide; SD, standard deviation Page of (page number not for citation purposes) Available online http://ccforum.com/content/10/5/R151 eters tested with this analysis (cardiac output and ... CO2, carbon dioxide; FiO2, fraction of inspired oxygen; PaCO2, (arterial) partial pressure of carbon dioxide; PaO2, (arterial) partial pressure of oxygen; PCO2, partial pressure of carbon dioxide...

Ngày tải lên: 13/08/2014, 03:20

... technology has been considered as one of the most promising candidates for selective removal of carbon dioxide from mixture with H2 and N2 Conventional glassy membranes focused mainly on the size ... design and small units, (2) comparative lower initial investment, (3) simple operation and maintenance, (4) tailored product for hydrogen purification at different scale and degree After SMR and ... is sent to the gasifier to produce hydrogen and carbon monoxide Afterwards, more hydrogen is generated by converting carbon monoxide to CO2 by WGS reaction Before the fuel stream is sent to the...

Ngày tải lên: 09/09/2015, 10:14

... reactors for hydrogen production In this article, we focus our review on the inorganic membranes systems for hydrogen separation and for membrane reactors involving the removal of hydrogen Hydrogen-permselective ... Iceland which has set a goal for a complete transition to hydrogen by 2030 In this scenario, hydrogen will be produced via Iceland’s geothermal and hydro resources and fed into fuel cells for ... delivery and distribution infrastructure (4) Efficient fuel cells and other energy conversion technologies that utilize hydrogen One of the promising candidates for hydrogen separation and purification...

Ngày tải lên: 13/05/2014, 01:01

... process for preparing activated carbon due to its lower activation temperature and excellent properties for the product compared to physical activation process Normally, phosphoric acid and ZnCl2 ... structural morphology and composition of activated carbon RESULTS AND DISCUSSION 3.1 BET Surface Area of Activated Carbon Some studies concerning the preparation of activated carbon from oil palm ... activated carbon prepared from oil palm shells pyrolyzed at different activation temperatures under nitrogen and carbon dioxide are reported in Table The textural characteristics of activated carbon...

Ngày tải lên: 07/08/2014, 14:20

... JF, Kavanagh BP: Carbon dioxide attenuates pulmonary impairment resulting from hyperventilation Crit Care Med 2003, 31: 2634-2640 Carbon dioxide: the new therapy for ARDS? Laffey and colleagues ... debate about permissive hypercapnia, and in particular the timing and efficacy of bicarbonate therapy/haemofiltration to treat the resulting acidosis, this simple and free approach certainly warrants ... Study Group: Early use of the pulmonary artery catheter and outcomes in patients with shock and acute respiratory distress syndrome: a randomized controlled trial JAMA 2003, 290:2713-2720 Brower...

Ngày tải lên: 12/08/2014, 20:20

... Critical Care Vol 11 No Cevallos and Zwischenberger Finally, it is clear that higher flow rates permit a more consistent carbon dioxide removal; for low flow rates (

Ngày tải lên: 13/08/2014, 03:20

... for matched pairs Stepwise regression analysis was performed to analyse the relationship between carbon dioxide reagibility of the VMCA, CCP, CBF and jugular venous oxygen saturation (SjO2) and ... (page number not for citation purposes) Critical Care Vol 11 No Thees et al Table Variables of cerebral circulation and oxygenation before and after reduction of the arterial carbon dioxide partial ... cessation of Available online http://ccforum.com/content/11/6/R123 Table Systemic circulatory variables before and after reduction of the arterial carbon dioxide partial pressure (PaCO2) Baseline...

Ngày tải lên: 13/08/2014, 10:20

... separated from the carbon dioxide elimination that depended on reduction in carbon dioxide tension One purpose of ventilation is to effect carbon dioxide exchange and achieve and maintain the target ... venous pH; PvCO2, venous carbon dioxide tension; PaCO2, arterial carbon dioxide tension be estimated by using the shunt equation [8] The effect of shunt on dead space and carbon dioxide exchange reflects ... relationships between content and partial carbon dioxide tension and oxygen saturation in venous, arterial and pulmonary end-capillary blood Applying a simplified lung model, Mecikalski and coworkers [9]...

Ngày tải lên: 13/08/2014, 10:20

Ngày tải lên: 13/11/2014, 15:46

... qualifying examination I wish to thank Sandy for taking care of lab related issues, and also to Yoke, Steffen, and Vanessa for helping me out in academic and administrative matters I highly value ... convey my deepest gratitude and warmest thanks to my siblings - Mrs Yatri Devi, Mr S B Gupta, and Mr R.B Gupta and all other relatives and friends for their love and cherished moments I will ... (b) 20, (c) 50, and (d) 80 wt% water For clarity, xii cellulose and anions in (a), and cellulose and water molecules in (b-d) are shown 65 Figure 5.11 Proposed mechanism for cellulose...

Ngày tải lên: 09/09/2015, 11:17

... Volume fraction XIV LIST OF ABBREVIATIONS Atomic force microscopy AFM Carbon dioxide CO2 Carbon dioxide capture and storage CCS Carbon monoxide CO Carbon molecular sieve membrane CMSM Diethylene ... BLEND WITH SUPERIOR SEPARATION PERFORMANCE FOR REMOVING CARBON DIOXIDE FROM HYDROGEN AND FLUE GAS 175 7.1 Introduction 176 7.2 Results and discussion 180 7.2.1 ... methane, it contains significant amounts of low hydrocarbon and a small amount of undesirable impurities such as carbon dioxide, nitrogen and hydrogen sulfide Consequently, treatment is required to...

Ngày tải lên: 09/09/2015, 17:55

... solutions and at pH 7.4, approximately one third of H2S exists as the undissociated form and two thirds dissociate into H+ and HS- (hydrosulfide ion); which may subsequently decompose to H+ and S2- (sulfide ... kidney, and the hippocampus and cerebellum in mammalian brain CSE is primarily responsible for H2S formation in the cardiovascular system and is predominantly found in the liver and in vascular and ... and dimethylsulfide represents another less important mechanism of H2S degradation, and therefore accounts for a smaller amount of H2S Additionally, H2S can be scavenged by methemoglobin to form...

Ngày tải lên: 10/09/2015, 08:32

... showered me with love and joy, and has made my life as a graduate student colorful and enjoyable Thank you both for always being there for me and for telling me what I need to hear and not what I want ... infrastructure for the storage and distribution of hydrogen, natural gas is often seen as a bridging fuel source towards a hydrogen- based economy The projected growth in the demand for hydrogen and natural ... made this endeavor a wonderful and rewarding experience First and foremost, I wish to thank my family and friends for their constant support and love throughout my candidature My academic advisor,...

Ngày tải lên: 14/09/2015, 08:39

... minutes) for the remaining laparoscopic part of the procedure (measurements obtained every minutes), and after evacuation of the carbon dioxide A p-value of less than 0.05 was accepted for statistically ... was one of the factors for patient’s recruitment Carbon dioxide pneumoperitoneum has been shown to produce respiratory and hemodynamic changes due to both CO2 absorption and the effects of increased ... subcutaneous emphysema The end tidal CO2, mean BP, heart rate and Sat O2 before during and after CO2 insufflation are shown in Table and Fig The mean of blood pressure changed mostly in the first...

Ngày tải lên: 05/03/2014, 15:20

... standards (15, 200 and 450 ng/ml) and system suitability standard (300 ng/ml) The system suitability test was performed using replicate injections of system suitability standard before analysis of ... 0.999) for curcumin The intra- and inter-day accuracy (Diff %) for curcumin was in the range of −2.81 to +2.53 and −3.11 to +3.61, respectively The intra- and inter-day precision (% RSD) for curcumin ... parameters were less than 0.5 and 1.5% relative standard deviation (RSD) for retention time and peak area, respectively, along with more than 3500 theoretical plates The linearity and range was established...

Ngày tải lên: 01/07/2014, 13:23

... (S) of the carbon dioxide dissociation curve This curve represents the relation between carbon dioxide volumes (used to calculate carbon dioxide content) and partial pressure of carbon dioxide This ... whereas the arterial carbon dioxide content (CaCO2) is estimated from end-tidal carbon dioxide (etCO2), with adjustments for the slope of the carbon dioxide dissociation curve and the degree of ... bars indicate mean and standard deviation, respectively (differential pressure pneumotachometer) and a pulse oxymeter VCO2 is calculated from minute ventilation and its carbon dioxide content,...

Ngày tải lên: 12/08/2014, 18:21

... supercritical carbon dioxide using as a medium for polymer synthesis and for polymer processing has attracted great attention recently There are a number of factors that make carbon dioxide a desirable ... 5.4 Pressure-composition diagram for the carbon dioxide (1) + maltose octaacetate (2) system at 323 K 90 Figure 5.5 P-T Projection for the carbon dioxide (1) + maltose octaacetate ... Beckman and Dr Karl Johnson for their constructive suggestions, brilliant ideas and random interruptions in the group meetings I would also like to thank Dr Beckman, Dr Johnson and Dr Chapman for...

Ngày tải lên: 13/11/2014, 10:49

... activated carbons (Bandosz, 2002; Adib, Bagreev, & Bandosz, 2000; Bagreev & Bandosz, 2002; Bagreev, Katikaneni, Parab, & Bandosz, 2005; Yuan & Bandosz, 2007) Her studies have focused on hydrogen sulfide ... for hydrogen sulfide to react and be removed (Abatzoglou & Boivin, 2009) Bandosz and her research group have focused considerably on the mechanisms of H2S removal on unimpregnated activated carbon ... the H2S removal reactions because the water in gaseous form reacts with CO2 to form carbonates and contributes to the formation of sulfurous acid which can deactivate the catalytic sites and reduce...

Ngày tải lên: 27/02/2015, 09:19

... carbon dioxide levels As compared to other physical and abiotic methods of carbon dioxide mitigation, biological carbon dioxide sequestration by photosynthesis is a sustainable approach for carbon ... approach for carbon dioxide capture in the long term Microalgae are suitable candidates for photosynthetic carbon dioxide sequestration due to their high growth rate and carbon dioxide fixation ... by using H2 and S2 O3 as electron donors (Madigan and Jung, 2009) Mineralising bacteria can also convert and store carbon dioxide in the form of carbonates such as calcite, magnesite and dolomite...

Ngày tải lên: 09/09/2015, 11:30

... ELECTROSPUN TITANIUM DIOXIDE NANOSTRUCTURES AND THEIR COMPOSITES WITH CARBON RICH MATERIALS FOR ENERGY CONVERSION AND STORAGE ZHU PEINING (B Eng., Huazhong University of Science and Technology) A ... tip and the grounded collector is thus created and allows fibers formation 35 xv    Fig 3.1 Fig 3.2 SEM images of the as-spun PVP-TiO2 composite nanofibers (A and B) and the TiO2 nanofibers (C and ... for me to conduct meaningful research and finish this PhD Thesis Also, I would like to express my sincere gratitude to my co-supervisor Professor Andrew WEE for his constructive suggestions and...

Ngày tải lên: 10/09/2015, 09:12