Numerous methods are used today for removing sulfur compounds from petroleum feedstock, such as hydrotreating, bio- and oxidative desulfurization, extraction, …

Hydrodesulfurization (HDS) is a commercial sulfur removal technology which has been widely applied in refineries. Most of the low sulfur hydrocarbon fuels can …

The ionic liquids have been applied for selective sulfur removal from fuels in recent years, because the ionic liquids are easy to be regenerated from adsorbed S-containing compounds by distillation or by dissolution in water, where ionic liquids are air- and moisture-stable at low temperature and non-corrosive.

Sulfur and Arsine Removal Innovative Absorbent Technology Manufactured in Alvin, TX Zeolitic Sulfur & Arsine Removal CLS has been removing complex S compounds from hydrogen/hydrocarbon streams for over 15 years specializing in removal of mercaptanic, thiophenic and benzothiophenic species. The net effect of zeolitic sulfur guards from …

TC removal tests demonstrated that CAU-17–0.02 S exhibited a removal efficiency of 62.9%, and the degradation rate constant is 1.44 times than that of bare CAU-17. ... Sulfur (S) element is doped in the novel Bi-based metal-organic frameworks CAU-17, which causes the generation of oxygen vacancies in CAU-17, and the introduction of S …

The study focused on: (1) investigating the enhanced effects of P-SMFC for sulfur and nitrogen pollutants removal; (2) clarifying the structure of microbial communities associated with bioelectricity generation and pollutants removal in P-SMFC; (3) revealing the molecular mechanisms of sulfur and nitrogen transformation by metagenomic ...

Using Oxidizing Media Filters. Oxidizing media filters, also sometimes called aeration treatments or air injection treatments is another way to rid your well water of sulfur (or high levels of iron). An oxidizing …

Sulfane sulfur, a collective term for hydrogen polysulfide and organic persulfide, often damages cells at high concentrations. Cells can regulate intracellular sulfane sulfur levels through specific mechanisms, but these mechanisms are unclear in Corynebacterium glutamicum.OxyR is a transcription factor capable of sensing oxidative …

Removing sulfur from off-gases is vital for many industrial operations. Regulations are tightening, and operators are forced to optimize the efficiency of their downstream treatment units. Topsoe's Wet gas Sulfuric Acid (WSA) technology converts sulfur compounds in off-gases to valuable sulfuric acid with best-in-class energy economy. WSA ...

Three kinds of coal and their density separated samples were rapidly pyrolyzed in a free-fall reactor under a nitrogen stream at a terminal temperature of 1253 K and showed that the low-density group contained sulfide and sulfoxide, which could contribute to the high extent of organic sulfur removal.

Spent caustic treatment and reuse. reside and serve, and the general public at large. With the. supply have come under question. and distribution are highly complex. As the pressure to act. become more innovative and imperative. In an industry that. and reimagine its processes, including its waste streams.

One recent area of innovation to remove sulfur from upgraded crude is oxidative desulfurization, a process that can operate under mild conditions and without the need for external H 2. In this paper, the mechanism, process, and the new inventions of selectively oxidative desulfurization are reviewed. Previous chapter.

The sulfur compounds in heavier fossil fuels include entrained H 2 S, inorganic sulfur compounds and organic sulfur compounds. For natural gas and petroleum, the predominant sulfur recovery strategy is: 1. To convert all sulfur compounds into H 2 S. 2. To adsorb the H 2 S into a solution containing an alkanolamine. 3.

Liquid redox chemistry has been employed for sulfur removal and recovery applications since the 1950's. The first process was the Stretford process, which was used commercially in the United Kingdom in the 1960's as a replacement for the iron sponge process in the treatment of sour town gas. The Stretford process has been joined in the United ...

The sulfur removal behavior of petcoke during high-temperature pyrolysis was investigated by combining high-temperature pyrolysis TG-MS data and ReaxFF MD simulations. Three petcokes under 1273–1773 K in six different particle sizes (≤6 mm) were pyrolyzed to determine the desulfurization initiation temperature and desulfurization …

The filter could simultaneously remove ammonia nitrogen, nitrate nitrogen, and TP, and generate less sulfur dioxide than the autotrophic denitrification system with sulfur as the substrate. The removal rate of ammonia nitrogen, nitrate nitrogen, and TP in the system could reach 97.8%, 94.1%, and 82% respectively, which had a relatively …

The Sulfur Removal System was originally developed for Brays Island, an exclusive hunting resort in Beaufort County, South Carolina (which is also home to Parris Island and Hilton Head Island). The resort was once a 5000 acre hog farm that was divided into one acre lots and sold for $500,000 each. Many wealthy people f

Sulfur Removal from Low-Sulfur Gasoline and Diesel Fuel by Metal-Organic Frameworks. S. Achmann, G. Hagen, M. Hämmerle, I. M. Malkowsky, C. Kiener, …

The reaction mechanism of catalytic removal of organic sulfur over various catalysts was summarized and analyzed. Specific surface area, hydroxyl, metal components and surface functional groups of catalysts affect removal efficiency. Organic sulfur can be converted to CH 4, CH 3 OH and CH 3 SH for resource utilization.

Activated Carbon Filters. Activated carbon filtration is a suitable water treatment solution for the removal of a low concentration of sulfur contamination in water. This type of filter can be installed at your home's point of entry, providing your plumbing, pipes and heaters with clean, pleasant-smelling water.

@article{osti_5341767, title = {Sulfur removal and recovery from industrial processes}, author = {Pfeiffer, J B}, abstractNote = {Concern for air quality and the economic necessity of increasing the capacity to process high-sulfur fuel and to recycle the resulting sulfur have spurred research to improve sulfur removal and recovery. Methods for sulfur …

Process Screening Analysis of Alternative Gas Treating and Sulfur Removal for Gasification. 2002 - Revised Final Report. Korens, Nick. Simbeck, Dale R. Wilhelm, Donald J. SFA Pacific, Inc. In this pdf format, this document has …

Typical treatments for removal require 14-20 wt% sodium hydroxide (NaOH) (caustic). Caustic will also remove CO2 and some elemental sulfur. For COS removal, the system uses monoethanolamine (MEA)/caustic, which hydrolyzes COS. Caustic extraction units specifically designed for gas gathering systems are fully automated and require minimal ...

The removal efficiencies for the Basra oil were superior to those for the Iranian oil, with 90%, 79%, and 63% of V, Ni, and sulfur being removed, respectively (Table 7 and Fig. 17). Download : Download high-res image (125KB) Download : Download full-size image; Fig. 16. Removal efficiency for the Iranian oil treated with 2 vol% DM-DS.

Abstract Titanium (TiO2) adsorbents demonstrated enhanced sulfur removal capacities during the novel photo-assisted adsorptive desulfurization (PADS), and photo-induced adsorption sites were proven to be stable. In situ infrared (in situ IR) spectroscopy was applied to analyze the sulfur removal pathways of benzothiophene …

In this study, sulfur (S) removal and transformation in five batch constructed wetlands (CWs) treating secondary effluent were investigated. The results showed that the presence of the plant cattail ( Typha latifolia ) had little effect on sulfate removal, while the carbon-rich litter it generated greatly improved sulfate removal, but with ...

water and solid iron sulfide. • Biological Processes. Biological sulfur removal processes (BioStrip) use specialized anaerobic bacteria to reduce sulfur in biogas. Bacteria live on packed media inside the treatment vessel, and require only a supply of water, nutrients, and sulfur. Phone: 503-374-9709 Fax: 503-946-3226 Email: info@methanesys.

Simultaneous nitrogen and sulfur removal through synergy of sulfammox, anammox and sulfur-driven autotrophic denitrification in a modified bioreactor enhanced …

1. Introduction. Presently, sulfur removal from gas or oil fuels, as two of the major sources of sulfur emission from refineries, is one of the most important duties of the oil refining industry [1], [2].Sulfur compounds including mercaptanes, thiophens and sulphides can convert to SO x during the combustion of gas and/or oil and spread in the …

In the case of a feedstock with low sulfur content, removal of sulfur can be achieved by absorption processes, e.g., absorption on a zinc oxide catalyst bed. In the …