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Carbon dioxide removal

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https://www.readbyqxmd.com/read/28303679/contralateral-pneumothorax-during-retroperitoneal-laparoscopic-donor-nephrectomy-a-case-report
#1
Yuto Matsushita, Hideaki Miyake, Daisuke Motoyama, Takayuki Sugiyama, Masao Nagata, Atsushi Otsuka, Hiroshi Furuse, Seiichiro Ozono
This report presents a case of a 46-year-old woman in whom contralateral pneumothorax occurred during retroperitoneal laparoscopic donor nephrectomy without any evidence of diaphragmatic injuries. After the start of carbon dioxide-induced pneumoperitoneum, the patient's end-tidal carbon dioxide pressure and heart rate suddenly increased. The surgery was then paused, and a chest X-ray revealed a right pneumothorax accompanied by pneumomediastinum. After a thoracostomy tube was inserted, these symptoms immediately improved...
March 17, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28288459/new-and-advanced-picosecond-lasers-for-tattoo-removal
#2
Maurice A Adatto, Ruthie Amir, Jayant Bhawalkar, Rafael Sierra, Richard Bankowski, Doran Rozen, Christine Dierickx, Moshe Lapidoth
Early methods of tattoo removal ultimately resulted in unacceptable cosmetic outcomes. While the introduction of laser technology was an improvement over the existing chemical, mechanical, and surgical procedures, the use of nonselective tattoo removal with carbon dioxide and argon lasers led to scarring. Q-switched lasers with nanosecond (10-9) pulse domains were considered to have revolutionized tattoo treatment, by selectively heating the tattoo particles, while reducing the adverse sequelae to adjacent normal skin...
2017: Current Problems in Dermatology
https://www.readbyqxmd.com/read/28284810/carbon-dioxide-utilization-in-a-microalga-based-biorefinery-efficiency-of-carbon-removal-and-economic-performance-under-carbon-taxation
#3
Igor Lapenda Wiesberg, George Victor Brigagão, José Luiz de Medeiros, Ofélia de Queiroz Fernandes Araújo
Coal-fired power plants are major stationary sources of carbon dioxide and environmental constraints demand technologies for abatement. Although Carbon Capture and Storage is the most mature route, it poses severe economic penalty to power generation. Alternatively, this penalty is potentially reduced by Carbon Capture and Utilization, which converts carbon dioxide to valuable products, monetizing it. This work evaluates a route consisting of carbon dioxide bio-capture by Chlorella pyrenoidosa and use of the resulting biomass as feedstock to a microalgae-based biorefinery; Carbon Capture and Storage route is evaluated as a reference technology...
March 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28282609/high-efficient-acetate-production-from-carbon-dioxide-using-a-bioanode-microbial-electrosynthesis-system-with-bipolar-membrane
#4
Yinbo Xiang, Guangli Liu, Renduo Zhang, Yaobin Lu, Haiping Luo
The aim of this study was to develop an efficient bioanode microbial electrosynthesis system (MES) to convert carbon dioxide into acetate using bioenergy from the wastewater. The bioanode MESs were constructed using proton exchange membrane (PEM) and bipolar membrane (BPM) as separator, respectively, and operated under different voltages (i.e., 0.8, 1.0, 1.2, and 1.4V). Since BPM could dissociate H2O into H(+) and OH(-) in situ to buffer the pH change in the chambers, the BPM-MES achieved 238% improvement in cathodic acetate production rate, 45% increase in anodic substrate removal efficiency, and more than five times enhancement in current output, as compared to the PEM-MES...
February 27, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28277081/carbofuran-removal-in-continuous-photocatalytic-reactor-reactor-optimization-rate-constant-determination-and-carbofuran-degradation-pathway-analysis
#5
M A Vishnuganth, Neelancherry Remya, Mathava Kumar, N Selvaraju
Carbofuran (CBF) removal in a continuous-flow photocatalytic reactor with granular activated carbon supported titanium dioxide (GAC-TiO2) catalyst was investigated. The effects of feed flow rate, TiO2 concentration and addition of supplementary oxidants on CBF removal were investigated. The central composite design (CCD) was used to design the experiments and to estimate the effects of feed flow rate and TiO2 concentration on CBF removal. The outcome of CCD experiments demonstrated that reactor performance was influenced mainly by feed flow rate compared to TiO2 concentration...
February 22, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28269224/importance-of-metabolism-variations-in-a-model-of-extracorporeal-carbon-dioxide-removal
#6
S Habran, T Desaive, Ph Morimont, B Lambermont, P C Dauby
Extracorporeal CO2 Removal device is used in clinics when a patient suffers from a pulmonary insufficiency like Acute Respiratory Distress Syndrome and allows to decarboxylate blood externally. In this work, a model of the respiratory system coupled with such a device is proposed to analyze the decrease of CO2 partial pressure in blood. To validate the model, some parameters are estimated thanks to experimental data. Metabolism is a crucial parameter and we show that its time evolution must be taken into account in order to have correct CO2 partial pressure simulations in arteries and in veins...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28248245/the-proteome-of-the-red-blood-cell-an-auspicious-source-of-new-insights-into-membrane-centered-regulation-of-homeostasis
#7
REVIEW
Giel J C G M Bosman
During the past decade, the hand-in-hand development of biotechnology and bioinformatics has enabled a view of the function of the red blood cell that surpasses the supply of oxygen and removal of carbon dioxide. Comparative proteomic inventories have yielded new clues to the processes that regulate membrane-cytoskeleton interactions in health and disease, and to the ways by which red blood cells communicate with their environment. In addition, proteomic data have revealed the possibility that many, hitherto unsuspected, metabolic processes are active in the red blood cell cytoplasm...
November 25, 2016: Proteomes
https://www.readbyqxmd.com/read/28238377/the-effect-of-metal-hydr-oxide-nano-enabling-on-intraparticle-mass-transport-of-organic-contaminants-in-hybrid-granular-activated-carbon
#8
Jose Garcia, Jasmina Markovski, J McKay Gifford, Onur Apul, Kiril D Hristovski
The overarching goal of this study was to ascertain the changes in intraparticle mass transport rates for organic contaminants resulting from nano-enabled hybridization of commercially available granular activated carbon (GAC). Three different nano-enabled hybrid media were fabricated by in-situ synthesizing titanium dioxide nanoparticles inside the pores of GAC sorbent, characterized, and evaluated for removal of two model organic contaminants under realistic conditions to obtain the intraparticle mass transport (pore and surface diffusion) coefficients...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28227454/importance-of-metabolism-variations-in-a-model-of-extracorporeal-carbon-dioxide-removal
#9
S Habran, Th Desaive, Ph Morimont, B Lambermont, P C Dauby, S Habran, T Desaive, Ph Morimont, B Lambermont, P C Dauby, S Habran, Th Desaive, B Lambermont, P C Dauby, Ph Morimont
Extracorporeal CO2 Removal device is used in clinics when a patient suffers from a pulmonary insufficiency like Acute Respiratory Distress Syndrome and allows to decarboxylate blood externally. In this work, a model of the respiratory system coupled with such a device is proposed to analyze the decrease of CO2 partial pressure in blood. To validate the model, some parameters are estimated thanks to experimental data. Metabolism is a crucial parameter and we show that its time evolution must be taken into account in order to have correct CO2 partial pressure simulations in arteries and in veins...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28212205/spontaneous-breathing-during-extracorporeal-membrane-oxygenation-in-acute-respiratory-failure
#10
Stefania Crotti, Nicola Bottino, Giulia Maria Ruggeri, Elena Spinelli, Daniela Tubiolo, Alfredo Lissoni, Alessandro Protti, Luciano Gattinoni
BACKGROUND: We evaluate the clinical feasibility of spontaneous breathing on extracorporeal membrane oxygenation and the interactions between artificial and native lungs in patients bridged to lung transplant or with acute exacerbation of chronic obstructive pulmonary disease (COPD) or acute respiratory distress syndrome. METHODS: The clinical course of a total of 48 patients was analyzed. Twenty-three of 48 patients were enrolled in the prospective study (nine bridged to lung transplant, six COPD, and eight acute respiratory distress syndrome)...
April 2017: Anesthesiology
https://www.readbyqxmd.com/read/28187382/adsorption-of-natural-organic-matter-and-disinfection-byproduct-precursors-from-surface-water-onto-tio2-nanoparticles-ph-effects-isotherm-modelling-and-implications-for-using-tio2-for-drinking-water-treatment
#11
Stephanie L Gora, Susan A Andrews
Titanium dioxide is a photocatalyst that can remove organic contaminants of interest to the drinking water treatment industry, including natural organic matter (NOM) and disinfection byproduct (DBP) precursors. The photocatalytic reaction occurs in two steps: adsorption of the contaminant followed by degradation of the adsorbed contaminant upon irradiation with UV light. The second part of this process can lead to the formation of reactive intermediates and negative impacts on treated water quality, such as increased DBP formation potential (DBPfp)...
May 2017: Chemosphere
https://www.readbyqxmd.com/read/28180117/effect-of-neck-collar-fixation-on-ventilation-in-multiple-trauma-patients
#12
Farzad Rahmani, Mahboob Pouraghaei, Payman Moharamzadeh, Ebrahim Mashhadi
BACKGROUND: According to the guidelines for treatment of multiple trauma patients, immobilization of the neck and neck collar fixation are essential. However, following neck collar fixation patients usually experience dyspnea. Some studies have found that neck collar fixation can lead to decreased pulmonary volumes, yet there have been no studies on the effect of neck collar fixation on patient ventilation. OBJECTIVES: The purpose of this study was to determine the effect of neck collar fixation on ventilation in multiple trauma patients...
September 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28160118/production-of-chemicals-from-c1-gases-co-co2-by-clostridium-carboxidivorans
#13
REVIEW
Ánxela Fernández-Naveira, Haris Nalakath Abubackar, María C Veiga, Christian Kennes
Bioprocesses in conventional second generation biorefineries are mainly based on the fermentation of sugars obtained from lignocellulosic biomass or agro-industrial wastes. An alternative to this process consists in gasifying those same feedstocks or even other carbon-containing materials to obtain syngas which can also be fermented by some anaerobic bacteria to produce chemicals or fuels. Carbon monoxide, carbon dioxide and hydrogen, which are the main components of syngas, are also found in some industrial waste gases, among others in steel industries...
March 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28132075/extracorporeal-carbon-dioxide-removal-ecco2r-in-patients-with-acute-respiratory-failure
#14
REVIEW
Andrea Morelli, Lorenzo Del Sorbo, Antonio Pesenti, V Marco Ranieri, Eddy Fan
PURPOSE: To review the available knowledge related to the use of ECCO2R as adjuvant strategy to mechanical ventilation (MV) in various clinical settings of acute respiratory failure (ARF). METHODS: Expert opinion and review of the literature. RESULTS: ECCO2R may be a promising adjuvant therapeutic strategy for the management of patients with severe exacerbations of COPD and for the achievement of protective or ultra-protective ventilation in patients with ARDS without life-threatening hypoxemia...
January 28, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28128552/rapid-selective-circumneutral-degradation-of-phenolic-pollutants-using-peroxymonosulfate-iodide-metal-free-oxidation-role-of-iodine-atoms
#15
Yong Feng, Po-Heng Lee, Deli Wu, Kaimin Shih
The development of environmentally friendly, oxidation-selective advanced oxidation processes (AOPs) for water decontamination is important for resource recovery, carbon dioxide abatement, and cost savings. In this study, we developed an innovative AOP using a combination of peroxymonosulfate (PMS) and iodide ions (I(-)) for the selective removal of phenolic pollutants from aqueous solutions. The results showed that nearly 100% degradation of phenol, bisphenol A, and hydroquinone was achieved after reaction for 4 min in the presence of 65 μM PMS and 50 μM I(-)...
February 10, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28125780/tight-binding-of-carboxylate-phosphonate-and-carbamate-anions-to-stoichiometric-cdse-nanocrystals
#16
Peter E Chen, Nicholas C Anderson, Zachariah M Norman, Jonathan S Owen
To completely displace the carboxylate surface ligands from cadmium selenide nanocrystals, oleic acid impurities are first removed using dimethylcadmium or diethylzinc. In addition to metal carboxylate and methane coproducts, reactions with CdMe2 produce surface bound methyl groups (δ = 0.4 ppm, 0.04-0.22 nm(-2)) that photolytically dissociate to methyl radicals and n-doped nanocrystals. Without oleic acid impurities, cadmium carboxylate can be completely displaced from the surface using n-alkylamines (NH2R', R' = n-butyl, n-hexyl, n-octyl) (≤0...
February 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28121615/physiological-closed-loop-control-of-mechanical-ventilation-and-extracorporeal-membrane-oxygenation
#17
Christian Brendle, Thorsten Mülders, Jan Kühn, Thorsten Janisch, Rüdger Kopp, Rolf Rossaint, Andre Stollenwerk, Stefan Kowalewski, Berno Misgeld, Steffen Leonhardt, Marian Walter
A new concept is presented for cooperative automation of mechanical ventilation and extracorporeal membrane oxygenation (ECMO) therapy for treatment of acute respiratory distress syndrome (ARDS). While mechanical ventilation is continuously optimized to promote lung protection, extracorporeal gas transfer rates are simultaneously adjusted to control oxygen supply and carbon dioxide removal using a robust patient-in-the-loop control system. In addition, the cooperative therapy management uses higher-level algorithms to adjust both therapeutic approaches...
January 25, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28114193/the-homburg-lung-efficacy-and-safety-of-a-minimal-invasive-pump-driven-device-for-veno-venous-extracorporeal-carbon-dioxide-removal
#18
Frederik Seiler, Franziska Trudzinski, Kai Hennemann, Tom Niermeyer, Christian Schmoll, Annegret Kamp, Robert Bals, Ralf Muellenbach, Hendrik Haake, Philipp M Lepper
Extracorporeal carbon dioxide removal (ECCO2R) is increasingly considered a viable therapeutic approach in the management of hypercapnic lung failure in order to avoid intubation or to allow lung-protective ventilator settings. This study aimed to analyze efficacy and safety of a minimal-invasive ECCO2R device, the Homburg lung. The Homburg lung is a pump-driven system for veno-venous ECCO2R with ¼" tubing and a 0.8 m surface oxygenator. Vascular access is usually established via a 19F/21cm bilumen cannula in the right internal jugular vein...
January 19, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28103741/study-on-degrading-graphene-oxide-in-wastewater-under-different-conditions-for-developing-an-efficient-and-economical-degradation-method
#19
Ting Li, Chao-Zhi Zhang, Chengyue Gu
With popular application of graphene and graphene oxide (GO), they have been discharged into water. Graphene and GO harm organisms. However, an efficient and economical method for removing graphene and GO in wastewater has seldom been reported. Graphene can be oxidized by hydrogen peroxide to give GO; therefore, degradation of graphene oxide is an important step in the procedure of removal of graphene from water. In this paper, GO degradation via photo-Fenton reaction under different conditions was carried out...
February 13, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28078748/low-temperature-hydrogenation-of-carbon-dioxide-to-methanol-with-a-homogeneous-cobalt-catalyst
#20
Jacob Schneidewind, Rosa Adam, Wolfgang Baumann, Ralf Jackstell, Matthias Beller
Herein we describe the first homogeneous non-noble metal catalyst for the hydrogenation of CO2 to methanol. The catalyst is formed in situ from [Co(acac)3 ], Triphos, and HNTf2 and enables the reaction to be performed at 100 °C without a decrease in activity. Kinetic studies suggest an inner-sphere mechanism, and in situ NMR and MS experiments reveal the formation of the active catalyst through slow removal of the acetylacetonate ligands.
January 12, 2017: Angewandte Chemie
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