determination of hydrogen sulfide and total sulfur in natural gas is critical to the natural gas industry. Hydrogen Sulfide Measurement Requirements Hydrogen sulfide (H 2S) is a clear, colorless, extremely toxic gas that has a rotten egg smell at low concentrations. The human nose can detect H 2S at concentrations below 100 parts per billion.
Hydrogen sulfide can also result from industrial activities, such as food processing, coke ovens, kraft paper mills, tanneries, and petroleum refineries.Hydrogen sulfide is a flammable, colorless gas with a characteristic odor of rotten eggs. It is commonly known as …
Hydrogen sulfide, or hydrosulfuric acid (H 2 S), is a gas that may occur in your water. Common names include stink gas and sewer gas. Hydrogen sulfide is insoluble in water, but underground, this gas remains trapped within the water. When the water is pumped to the surface, the hydrogen sulfide gas escapes and is therefore easy to smell.
A minimum dissolved oxygen level of 4.0 ppm is necessary for complete oxidation of hydrogen sulfide to elemental sulfur. In water containing less than 4.0 ppm dissolved oxygen, aeration or the addition of chemical oxidants must be used to increase dissolved oxygen.
These bacteria utilized inorganic sulfur substrates and produced hydrogen sulfide (H 2 S) as the end product of anaerobic respiration . Before the "great oxidation event" which occurred 2.5 billion years ago leading to an increase in atmospheric oxygen, H 2 S remained the most abundant and versatile chemical on the primitive earth ( 4, 5 ).
Hydrogen sulfide often is present in wells drilled in shale or sandstone, or near coal or peat deposits or oil fields. Sulfur-reducing bacteria, which use sulfur as an energy source, are the primary producers of large quantities of hydrogen sulfide.
Hydrogen sulfide is a central participant in the sulfur cycle, the biogeochemical cycle of sulfur on Earth. In the absence of oxygen, sulfur-reducing and sulfate-reducing bacteria derive energy from oxidizing hydrogen or organic molecules by reducing elemental sulfur or sulfate to hydrogen sulfide.
For example, hydrogen sulfide is a known toxic gas that should be handled with care, or better yet, avoided whenever possible. But thankfully, the amount of hydrogen sulfide that most people are exposed to is not enough to be harmful. Those that are most at risk work with hydrogen sulfide or live near industrial areas that use it.
hydrogen sulfide forms a black precipitate (ferrous sulfide) that can stain laundry and bathroom fixtures, darken silverware and discolor copper and brass utensils. Sources of hydrogen sulfide Hydrogen sulfide is formed by sulfur- and sulfate-reducing bacteria that can occur naturally in water. These anaerobic bacteria use sulfates and
The invention relates to a process for converting hydrogen sulfide to sulfur and hydrogen. The hydrogen sulfide gas is contacted with a quinone in an aqueous solvent containing a sulfur complexing agent to yield sulfur and the corresponding hydroquinone. The hydroquinone is convened back to quinone and hydrogen. The quinone is recycled and the hydrogen gas and sulfur is collected.
Hydrogen Sulfide and Sulfur Bacteria Hydrogen sulfide gas can give water a "rotten egg" taste or odor. This gas can occur in wells anywhere and be: Naturally occurring—a result of decay and chemical reactions with soil and rocks. Produced by certain "sulfur bacteria" in …
Hydrogen sulfide often is present in wells drilled in shale or sandstone, or near coal or peat deposits or oil fields. Hydrogen sulfide gas produces an offensive "rotten egg" or "sulfur water" odor and taste in water. In some cases, the odor may be noticeable only when the …
In this review, we focus on the activities transpiring in the anaerobic segment of the sulfur cycle occurring in the gut environment where hydrogen sulfide is produced. While sulfate-reducing bacteria are considered as the principal agents for hydrogen sulfide production, the enzymatic desulfhydrati …
Hydrogen sulfide gas (H2S) can occur in wells anywhere in Minnesota, and gives the water a characteristic rotten egg taste or odor. This page provides basic information about hydrogen sulfide gas and sulfur bacteria and discusses actions that you can take to minimize their effects.
Hydrogen sulfide is a highly flammable, explosive gas, and can cause possible life-threatening situations if not properly handled. In addition, hydrogen sulfide gas burns and produces other toxic vapors and gases, such as sulfur dioxide.
Hydrogen sulfide (H₂S) has emerged as an important signaling molecule with beneficial effects on various cellular processes affecting, for example, cardiovascular and neurological functions. The physiological importance of H₂S is motivating efforts to develop strategies for modulating its levels. Ho …
Recognizable by a foul-smelling "Rotten Egg" like odor, sulfides, particularly hydrogen sulfide (H 2 S) is a serious issue that affects millions of Americans. Although hydrogen sulfide is a poisonous gas, the levels of this type of sulfur in water are more of a nuisance than a health threat.
Hydrogen sulfide is a flammable, colorless gas that smells like rotten eggs. People usually can smell hydrogen sulfide at low concentrations in air ranging from 0.0005 to 0.3 parts per million (ppm). Hydrogen sulfide occurs naturally in crude petroleum, natural gas, volcanic gases, and hot springs. It can also result from bacterial
hydrogen sulfide Hydrogen sulfide is endogenously produced by bacteria in the mouth and large intestine. Hydrogen sulfide may occur naturally in well water and can be formed in hot water heaters. Populations living in areas of geothermal activity, near waste sites or industries that release hydrogen sulfide may be more
CHEBI:16136 - hydrogen sulfide. A sulfur hydride consisting of a single sulfur atom bonded to two hydrogen atoms. A highly poisonous, flammable gas with a characteristic odour of rotten eggs, it is often produced by bacterial decomposition of organic matter in the absence of oxygen. This entity has been manually annotated by the ChEBI Team.
Sulfur is also important as it is a component of hydrogen sulfide, or H 2 S. Hydrogen sulfide is a dangerous, colourless gas that occurs naturally in many petroleum products but can make up significant amounts of natural gas. This hydrogen sulfide content is one of the main safety concerns associated with the use of natural gas.
Hydrogen sulfide is produced naturally by biological degradation of sulfur-containing products (eg, fish, sewage, and manure) and produced as a byproduct in many industrial processes (ie, paper mills, heavy-water production, petroleum refineries, tanneries, mines, carbon disulfide production, and …
Hydrogen sulfide (H₂S) has emerged as an important signaling molecule with beneficial effects on various cellular processes affecting, for example, cardiovascular and neurological functions. The physiological importance of H₂S is motivating efforts to develop strategies for modulating its levels. Ho …
HYDROGEN SULFIDE reacts as an acid and as a reducing agent. Explodes on contact with oxygen difluoride, bromine pentafluoride, chlorine trifluoride, dichlorine oxide, silver fulminate. May ignite and explode when exposed to powdered copper in oxygen [Mertz, V. et al., Ber., 1880, 13, p. 722].
Sulfur hydride; Hydrogen sulfide (H2S); Sulfuric acid SDS # :001029 Airgas USA, LLC and its affiliates 259 North Radnor-Chester Road Suite 100 Radnor, PA 19087-5283 1-610-687-5253 24-hour telephone :1-866-734-3438 Section 2. Hazards identification FLAMMABLE GASES - Category 1
Hydrogen sulfide is a component of the natural sulfur cycle and is produced endogenously in mammals (Weil et al. 2006). It arises from bacterial reduction of sulfates and decomposition of proteins. Hydrogen sulfide is a byproduct of many industrial processes and is used to make inorganic sulfides that are used to make such products as dyes ...
This technology shift has increased the hydrogen sulfide hazard in molten sulfur. A review of available Material Safety Data Sheets for molten sulfur suggests that the range of hydrogen sulfide concentrations and corresponding safe unloading and handling procedures for molten sulfur vary considerably among producers.
DETERMINATION OF HYDROGEN SULFIDE AND TOTAL SULFUR IN NATURAL GAS Marshall T. Schreve Del Mar Scientific, Ltd. 4951Airport Parkway Suite 803 Addison, Texas 75001 USA INTRODUCTION Hydrogen Sulfide (H2S) is a gas composed of one Sulfur Atom and two Hydrogen Atoms. ;H2S is formed by the decomposition of organic matter and is
Rotten egg is the term often used to describe hydrogen sulfide (H 2 S) in the wine matrix. This compound has a low sensory threshold and can be detected at levels between 0.9 – 1.5 ppb, although if present at lower levels, the fruity notes of the wine may be dulled. Sulfur-based compounds do not spontaneously appear, they are produced during ...
1.Introduction. Hydrogen sulfide (H 2 S) is a common gas in natural environment and industrial exploration process [,, ].Generally, H 2 S in low-concentration has a disgusting rotten egg odor and it can be easily identified from smell. However, H 2 S in high concentration can rapidly paralyze human's nerve, which means it is hard to notice the danger because H 2 S will immediately kill people.
