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China’s Sulfur Dioxide Emissions Declined Significantly While India’s Grew Over Last Decade
China Sulfur Dioxide Emissions Declined Significantly India Grew Over Last Decade
2017/11/24
Sulfur dioxide is an air pollutant that causes acid rain, haze and many health-related problems. It is produced predominantly when coal is burned to generate electricity.Although China and India remai...
Sulfur Dioxide Control by Electric Utilities: What Are the Gains from Trade?
Trade Electric Utilities
2015/9/18
Title IV of the 1990 Clean Air Act Amendments (CAAA) established
a market for transferable sulfur dioxide (SO,) emission allowances
among electric utilities. This market offers firms facing high mar...
UA Researchers are Creating Better Thermal-Imaging Lens From Waste Sulfur
UA Researchers Creating Better Thermal-Imaging Lens Waste Sulfur
2014/5/13
A UA-led research team has developed a new use for the sulfur left over from oil and natural gas refining: made into a plastic polymer, the material can be made into cheap and lightweight lenses for i...
Survival Analysis of Victims of Sulfur Oxide Air Pollution Suffering from COPD or Asthma in Yokkaichi, Japan, in Relation to Predisposing Exposure
COPD Asthma Air Pollution Sulfur Oxide Pulmonary Function Survival Analysis
2013/3/11
To investigate the relationships between clinical findings and symptoms and the survival of patients with Yokkaichi Asthma, in relation to predisposing sulfur dioxide (SO2) exposure, we examined recor...
Removal of Nitrogen Dioxide and Sulfur Dioxide from Air Streams by Absorption in Urea Solution
Sulfur Dioxide Removal Nitrogen Dioxide Removal Column Absorption Removal of Acid Gases Air Pollution Prevention
2013/3/12
The study focuses on the absorption rates of NO2, SO2 and a mixture of these two acid gases into urea solution in packed bed column. The absorption rate was studied as a function of absorbent temperat...
Preparation of fine, uniform nitrogen- and sulfur-modified TiO2 nanoparticles from titania nanotubes
Preparation of fine uniform nitrogen sulfur-modified TiO2 nanoparticles titania nanotubes
2010/11/25
TiO2 nanoparticles modified with nitrogen and sulfur were prepared from titania nanotubes by a facile wet chemistry method. The samples synthesized with different thiourea/TiO2 ratios showed a uniform...
Absorption of Low Concentration Sulfur Dioxide Using Liquid-containing Microporous Membrane
hollow fiber liquid-containing membrane citric acid,low concentration SO2 absorption
2009/11/16
The absorption of low concentration SO2 in flue gas by using the module of liquid-containing microporous membrane which is made up of hollow fiber and citric acid-sodium citrate buffer solution was in...
Leaching Gold Using Oxidation Products of Elemental Sulfur in Ca(OH)2 Solution Under Oxygen Pressure
gold leaching alkaline solution oxygen pressure
2009/11/16
A gold leaching process by using in situ oxidation products of added elemental sulfur in Ca(OH)2 solution was investigated. A gold concentrate containing 45 g/t Au was tested and 85%~87% of gold were ...
A SINGLE, PARTICLE-SIZE MODEL OF SULFUR SELF-RETENTION - A GRAIN MODEL APPROACH
coal combustion sulfur retention by ash
2009/10/13
A developed overall model for sulfur self-retention in ash during coal particle combustion is presented in the paper. The total sulfur content in char, after devolatilization, is evaluated using a der...
Controls on sulfur content in tree rings of Norway spruce and European beech at a heavily polluted site
sulfur tree rings spruce beech pollution
2017/8/9
Search for a biogeochemical archive of past sulfur pollution is motivated by the need to predict ecosystem health. Sofar, no indicator of local-scale S pollution has existed, while long-range transpor...
Adsorptive Separation of Infinitesimal Sulfur Oxide in Naphtha —Reactivation of Silica Gel Using Toluene and Dimethyl Ether—
Oxidative desulfurization Adsorption Naphtha Dimethyl ether
2009/8/4
Adsorption of sulfur oxide is one of the key techniques for producing extra-low-sulfur content naphtha during oxidative desulfurization. Reactivation and repeated use of adsorbent are quite important...
Synthesis of Di-t-butyl Polysulfide from Isobutene, Hydrogen Sulfide, and Sulfur (Part 2) Catalytic Behavior of MFI Zeolites
Polysulfide synthesis Zeolite catalyst MFI zeolite Gallium Reaction mechanism
2009/8/4
Synthesis of di-t-butyl polysulfide from isobutene, hydrogen sulfide and sulfur was carried out at 125°C in an autoclave over MFI zeolite catalysts isomorphously framework-substituted with Al, Ga, an...
Sulfidation State and Sulfur Behavior on Mo-based HDS Catalysts Supported on TiO2 Using 35S Tracer Methods
Sulfidation state Hydrodesulfurization High surface titania Molybdenum catalyst
2009/8/4
A 35S radioisotope pulse tracer method using 35S-labeled H2S was used to investigate the sulfidation state of Mo-based catalysts supported on TiO2. Despite the coverage of Mo species on the TiO2 supp...
Analysis of Sulfur Compounds in Straight-run Naphtha and FCC Gasoline
Sulfur containing compound Petroleum naphtha FCC gasoline
2009/8/4
Sulfur-containing compounds in straight-run naphtha and catalytic-cracked gasoline were analyzed quantitatively using gas chromatography with a sulfur chemiluminescence detector. Pretreatment of the s...
Effect of Extraframework Aluminum of USY Zeolite on Sulfur Tolerance of Pd-Pt/USY Catalyst
Extraframework aluminum Delaminated USY zeolite Palladium platinum catalyst
2009/8/4
A series of bimetallic Pd-Pt (mole ratio Pd:Pt=4:1) catalysts supported on ultrastable Y (USY) zeolites and delaminated USY zeolites were prepared and characterized by XRD, 27Al MAS NMR and CO adsorp...