Wyniki wyszukiwania dla: OXIDATIVE DESULFURIZATION
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Numerical investigation on distribution characteristics of oxidation air in a lime slurry desulfurization system with rotary jet agitators
PublikacjaRotary jet agitator is an effective device for mixing, dispersing, dissolving, and suspending dispersed phases in liquid, and is particularly advantageous to the homogenization of oxygen-enriched air within the lime slurry desulfurization system. The distribution of oxygen-enriched air in agitators is vital for the process of gypsum crystallization and the homogeneous and sufficient oxygen-enriched air can promote the formation...
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Desulfurization of raw naphtha cuts using hybrid systems based on acoustic cavitation and advanced oxidation processes (AOPs)
PublikacjaA combination of dual-frequency acoustic cavitation (acoustic cavitation) and UV assisted advanced oxidation processes (AOPs) reaction system was developed for desulfurization of raw naphtha used to produce aviation fuels. Various types of oxidants in hybrid systems including hydrogen peroxide, acetic acid, acetone, air and ozone were compared. At optimum oxidant to sulfur compounds molar ratio (rox) of 5.0, the hybrid process...
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Oxidatively Damaged DNA/Oxidative Stress in Children with Celiac Disease
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Oxidative Medicine and Cellular Longevity
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Grzegorz Boczkaj dr hab. inż.
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OPTIMALIZATION OF SORBENT FEEDING IN THE DRY METHOD OF FLUE GAS DESULFURIZATION
PublikacjaThe swiftly developing sea transport contributes to a considerable increase of fuel usage in the international shipping, which results in the escalation of toxic compounds emitted into the atmosphere. It is followed by the constantly heightened requirements limiting those emissions. In the case of sulfur oxide emission, inside of SECA (Sulfur Emission Control Area), the maximum content of sulfur in the shipping fuels used on the...
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Lignocellulosic waste biosorbents infused with deep eutectic solvents for biogas desulfurization
PublikacjaThis paper introduces an innovative method for treating biogas streams, employing lignocellulosic biosorbents infused with environmentally friendly solvents known as deep eutectic solvents (DES). The primary focus of this study was the elimination of volatile organosulfur compounds (VSCs) from model biogas. Biosorbents, including energetic poplar wood, antipka tree, corncobs, and beech wood, were used, each with varying levels...
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JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES
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OXIDATION OF METALS
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OXIDATION COMMUNICATIONS
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Degradation of protective coatings in steel chimneys of flue gas desulfurisation system
PublikacjaThis paper presents problems associated with corrosion of steel stacks and changes in philosophy of corrosion protection when implemented into flue gas desulphurization systems. In-situ tests were taken by means of electrochemical impedance spectroscopy at the stack which discharges flue gas before wet lime/limestone desulphurization. A very quick electrolyte absorption by the spherical infill vinylester coating was found using...
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Use of Impedance Spectroscopy to Characterize Lining Performance in Simulated Flue Gas Desulfurization Systems
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Small field radiotherapy of head and neck cancer patients is responsible for oxidatively damaged DNA/oxidative stress on the level of a whole organism
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Deep eutectic solvents based highly efficient extractive desulfurization of fuels – Eco-friendly approach
PublikacjaThe developed process is based on alternative, green and cheap solvents for efficient desulfurization of fuels. Several deep eutectic solvents (DESs) were successfully synthesized and studied as extraction solvents for desulfurization of model fuel containing thiophene (T), benzothiophene (BT) and dibenzothiophene (DBT). The most important extraction parameters (i.e. kind of DES, DES: fuel volume ratio, hydrogen bond acceptor:...
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Absorptive Desulfurization of Model Biogas Stream Using Choline Chloride-Based Deep Eutectic Solvents
PublikacjaThe paper presents a synthesis of deep eutectic solvents (DESs) based on choline chloride (ChCl) as hydrogen bond acceptor and phenol (Ph), glycol ethylene (EG), and levulinic acid (Lev) as hydrogen bond donors in 1:2 molar ratio. DESs were successfully used as absorption solvents for removal of dimethyl disulfide (DMDS) from model biogas steam. Several parameters affecting the absorption capacity and absorption rate have been...
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Sulfurization of phosphanylphosphinidene ligand: Access to phosphinothioyltrithiophosphonato platinum(II) complexes
PublikacjaThe reactivity of phosphanylphosphinidene Pt(0) complexes [DppePt(η2-P–PtBu2)] (1) and [(pTol3P)2Pt(η2-P–PtBu2)] (2) toward sulfur was studied. Reactions of 1 and 2 with an excess of sulfur led to the formation of the first transition metal complexes 3 and 4 with phosphinothioyltrithiophosphonato ligands with the formula [tBu2P(=S)–P(=S)S2]2-. In contrast to previous reports on the phosphanylphosphinidene moiety sulfurization,...
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Electrochemical investigations of stainless steels used in flue‐gas desulphurization units
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Treatment of bitumen post oxidative effluents by sulfate radicals based advanced oxidation processes (S-AOPs) under alkaline pH conditions
PublikacjaSulfate radicals based Advanced Oxidation Processes (S-AOPs), namely Persulfate and peroxymonosulfate, were used for the treatment of post oxidative effluents from a production of petroleum bitumens under alkaline pH. Studies on the identification and monitoring of the volatile organic compounds (VOCs) along with COD, BOD and sulfide ions reduction were performed. Persulfate with a ratio between the oxygen from the oxidant and...
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Journal of Cellular Neuroscience and Oxidative Stress
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Determination of the amount of wash amines and ammonium ion in desulfurization products of process gases and results of related studies
PublikacjaPrzedstawiono metodę oznaczania tzw. amin myjących i ich produktów degradacji, włączając jon amonowy w wodach procesowych i ściekach wytwarzanych podczas odsiarczania gazów. W procesach rafinacji ropy naftowej zastosowano jonowymienną chromatografię cieczową z detektorem refraktometrycznym oraz tanią kationowymienną kolumnę HPLC. Otrzymane wyniki oznaczeń porównano z wynikami uzyskanymi przez miareczkowanie potencjometryczne....
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Laboratory station for research of the innovative dry method of exhaust gas desulfurization for an engine powered with residual fuel
PublikacjaContemporary methods of exhaust gas desulfurization in marine engines are all expensive methods (4-5 million euro). This is, among other reasons, due to the limited market audience, but primarily due to the monop-olized position of manufacturers offering fabrication and assembly of this type of marine ship installations. Proposed as part of a research project financed by the Regional Fund for Environmental Protection and Maritime...
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Oxidative stress and oxidative DNA damage is characteristic for mixed Alzheimer disease/vascular dementia
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Assessment of protective properties of rubber lining in absorbers of flue gas desulphurization systems.
PublikacjaResults of research on degradation of rubber lining which is the main protection of absorbers in flue gas desulphurization (FGD) systems were presented. The power plant where the system operated is lignite-fired. Owing to measurements using electrochemical impedance spectroscopy and gravimetric determination of water content in the lining, the areas of the system which are most exposed to degradation were shown. The results obtained...
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Functionalization of Graphite with Oxidative Plasma
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Persistent oxidative stress in colorectal carcinoma patients
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Oxidative Stress as an Important Contributor to the Pathogenesis of Psoriasis
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Comparison of oxidative stability of different edible oils
PublikacjaCelem prezentowanych badań było porównanie stabilności oksydacyjnej olejów roślinnych z Polski, Finlandii i Hiszpanii. Na etapie przyspieszania utleniania zastosowano promieniowanie ultrafioletowe (UV). Po naświetlaniu olejów powstałe związki lotne ekstrahowano z fazy nadpowierzchniowej za pomocą techniki mikroekstrakcji do fazy stacjonarnej (HS-SPME) i analizowano z zastosowaniem chromatografu gazowego z detektorem płomieniowo-jonizacyjnym...
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Oxidative stress as a hidden cost of attractiveness in postmenopausal women
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Estimation of Oxidative Stress Markers in Chronic Kidney Disease
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Oxidative stress in humans: validation of biomarkers of DNA damage
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Cylindrospermopsin decreases the oxidative burst capacity of human neutrophils
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Chromatographic Examinations of Tea's Protection Against Lipid Oxidative Modifications
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Association of Genes Related to Oxidative Stress with the Extent of Coronary Atherosclerosis
PublikacjaOxidative stress is believed to play a critical role in atherosclerosis initiation and progression. In line with this, in a group of 1099 subjects, we determined eight single nucleotide polymorphisms (SNPs) related to oxidative stress (PON1 c.575A>G, MPO c.463G>A, SOD2 c.47T>C, GCLM c.590C>T, NOS3 c.894G>T, NOS3 c.786T>C, CYBA c.214C>T, and CYBA c.932A>G) and assessed the extent of atherosclerosis in coronary arteries based on...
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Oxidative Modification of Proteins in Pediatric Cystic Fibrosis with Bacterial Infections
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Dynamics of Oxidative Damage at Early Stages of Estrogen-dependant Carcinogenesis
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Effects of basal level of antioxidants on oxidative DNA damage in humans
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Does morphology of carotid plaque depend on patient's oxidative stress?
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Elucidating of oxidative distress in COVID-19 and methods of its prevention
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Oxidative DNA Damage in Blood of CVD Patients Taking Detralex
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Influence of cabbage juices on oxidative changes of rapeseed oil and lard
PublikacjaCelem badań było określenie wpływu soków wyizolowanych z kapusty surowej i kiszonej na przemiany oksydatywne i termooksydatywne tłuszczów roślinnych (na przykładzie oleju rzepakowego podwójnie ulepszonego) i zwierzęcych (na przykładzie smalcu). Tłuszcze te ogrzewano w temperaturze 100 0C z sokami z kapusty w układzie modelowym przez 6 godzin, pobierając co 1,5 godz. próbki do badań.Po procesie ogrzewania tłuszczów w obecnosci soków...
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Oxidative Stress as a Possible Target in the Treatment of Toxoplasmosis: Perspectives and Ambiguities
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Sweet grass protection against oxidative stress formation in the rat brain
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EFFECT OF ANTIOXIDANTS ON THE STABILITY OF PITCH- BASED POLYMER TO THERMO-OXIDATIVE ACTION
PublikacjaThe influence of stabilizers – hydrogen donors – on the processes of thermooxidative destruction of pitch-based polymer has been investigated. It is shown that Irganox has not stabilizing effect on pitch-based polymer and melamine slightly retards the destructive process. A mixture of melamine and Irganox exhibits synergetic stabilizing effect and at the optimum ratio it can be used to prevent unwanted thermooxidative processes...
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Protective effect of desloratadine against oxidative stress in human erythrocytes in vitro
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High Concentrations of Excised Oxidative DNA Lesions in Human Cerebrospinal Fluid
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Oxidative DNA damage in cancer patients: a cause or a consequence of the disease development?
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Oxidative Stress Level in the Testes of Mice and Rats during Nickel Intoxication
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Seed-Roasting Process Affects Oxidative Stability of Cold-Pressed Oils
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Air Pollution, Oxidative Stress, and the Risk of Development of Type 1 Diabetes
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Isoprostanes-Biomarkers of Lipid Peroxidation: Their Utility in Evaluating Oxidative Stress and Analysis
PublikacjaIsoprostanes (IsoPs) are key biomarkers for investigating the role of free radical generation in the pathogenesis of human disorders. To solve IsoPs-related problems with regard to isoprostanes, analytical tools are required. This paper reviews the problems and trends in this field focusing on the methodology for assaying biomarkers in exhaled breath condensate (EBC) samples. A large amount of work has been done in the qualitative...