Hydrogen sulfide is a colorless gas with an obnoxious rotten egg odour. H2S is highly flammable, noxious and vitriolic in nature. Many petroleum and natural gas processing industries produces H2S as a by-product gaseous stream. Most H2S in the air comes from natural sulfur cycle. Exposure to H2S can lead to various health issues like burning/tearing of eyes, cough, and shortness of breath. Moderate concentration can lead to respiratory issues. So it is advisable to make use of this gas in other industrial
above the flame. The crucible was heated for about 10 minutes or until all the powder is gone. The crucible is allowed to cool. The coil is massed. Theory: Mass of Sulfide = mass of compound - mass of copper coil Emperical ~ mass of copper coil x ___1 mole___ = ___moles Cu Gram molar mass Cu Mass of Sulfide x ___1 mole___ = ___ moles S Gram molar mass S Emperical Ratio: __moles Cu / ___moles S : __ moles S / __moles S % Composition ~ _mass of element_ x 100 mass of
Within the stages outlines by Love and Marks (2003) each stage is composed of the progressions featured within autolysis and putrefaction. Additional external observations can be seen throughout the process, triggered by the circulatory stasis and tissue necrosis. External gross morphological changes can be seen such as algor mortis, rigor mortis, and livor mortis. Algor mortis consists of the process in which the body slowly cools to the level of ambient temperature at a variable rate (Love and
had taken place in 2008, 9 in 2009, 36 in 2010, and at least 27 cases by the middle of 2011 (Scoville, 2011). While these numbers are only a tiny fraction of the amount of suicid... ... middle of paper ... ... 2010). When treating for hydrogen sulfide exposure, nitrite therapy may be included in order to aid recovery (Oreshan & Stevens, 2011). If exposure to hydrogen cyanide occurred, then the individual should also be given a specific cyanide antidote kit (Oreshan & Stevens, 2011). Overall chemical
Raw biogas contains about 55–65% methane (CH4), 30–45% carbon dioxide (CO2), traces of hydrogen sulfide (H2S) and fractions of water vapours. A typical composition of biogas can be seen on the following table: Table 1: Biogas typical composition Component Formula Concentration (% by vol.) Methane CH4 55-70 Carbon dioxide CO2 30-45 Nitrogen N2 0-5 Oxygen O2 <1 Hydrocarbons CnH2n+2 <1 Hydrogen sulfide H2S 0-0.5 Ammonia NH3 0-0.05 Water (vapour) H2O 1-5 Siloxanes CnH2n+1SiO 0-50 mg/m3 The main compound
Types of Biogeochemical Cycle Biogeochemical cycle is crucial for every living organism on Earth. It is strongly influenced by life forms, especially plants and microorganisms. A biogeochemical cycle can be defined as a continuous pathway by which conversion and circulation of chemical nutrients through both biotic and abiotic compartments of Earth (Butcher, 1992). Generally, biogeochemical cycles can be classified into three major categories which are nitrogen cycle, sulfur cycle and carbon cycle
controlled nickel sulfide (NiS, NiS2, Ni3S4) nanoparticles were synthesized using a temperature-controlled injection method. In single-solvent experiments oleylamine was used as solvent, in the case of multi-solvent oleylamine, oleic acid and octadecine were mixed together. The respective nickel sulfide phases were synthesized on the reduced graphene oxide (rGO) sheets through the single-step temperature controlled injection processes. The complications in the synthesis of rGO/nickel sulfide phases were
Power plants were made to produce energy, but when The Al mishraq power plant explodes, one of the biggest power plants near Mosul, Iraq, it devastated a entire country sending to catastrophe and misery. The Al Mishraq fire was one of the worst man made disasters in the world. On June of 2003 near Mosul, Iraq a fire ignited from the explosion of the state run sulfur plan, Al- Mishraq, which burned for almost a month. “Public Health, 2012”. It devastated millions of lives and caused thousands of people
A. Introduction Biogas – a term that has been synonymous to the rural culture, a viable alternate to the rapidly depleting conventional sources, a resource whose production is cheaper, and almost cent percent of the raw materials used to produce it get utilised. Owing to the tremendous rise in the fuel consumption, we need to search for substitutes – one that can replace (the already not-so-left resources), revive (a less polluting option) and replenish (the present state of livelihood). In this
The fire and explosion at the ConocoPhillips Humber Refinery (16 April 2001) A formal report was made for the incident by COMAH and ConocoPhillips detailing the whole event and the response and action at the time. The events that took place are as follows: On 16 April 2001 an explosion occurred at ConocoPhillips Humber Refinery after the failure of an overhead pipe. An investigation was launched on the incident, which is required under Control of Major Accident Hazards (COMAH) regulations, by the
The purpose of this lab is to create and perform a chemical reaction to find the percent yield. In this lab it is to be believed that iron will react with sulfur to create iron sulfide. To be able to perform this chemical reaction heat needs to touch the mixture of the two elements, whether it be with a direct flame to the mixture or a preheated glass rod. The independent variable would be the amount of iron and sulfur being used. The dependent variable would be the percent yield found at the end
HYPOTHESIS: Once I pour the baking soda solution on the silver it will remove the tarnish from the silver because aluminum is a more active metal than silver causing the silver sulfide to bond to the aluminum. PURPOSE: The purpose of this experiment is to observe an oxidation-reduction reaction. RAW MATERIALS: aluminum foil silver tarnished object- ring Teflon frying pan Pot to boil 1 quart of water baking soda container to measure out 1 quart of water a tablespoon measure wooden spoon
In microbiology, bacterial identification relies on isolating individual bacterial colonies of different species. The streaking for isolation technique is a tool used to obtaining a pure culture. The technique consists of taking an original inoculum that contains a mixed culture and spreading the bacteria into four quadrants on a solid medium. The purpose of spreading the mixed culture on a petri dish is to reduce the number of bacteria in each subsequent quadrant to one parent cell of each type
methods of extracting copper from different ores. The process below will examine a sequence of procedures to effectively extract as much copper from sulfide ores also known as Chalcopyrite (pyrites). Mining Sulfide ores contain roughly 34% of copper
Purpose: To identify an unknown microorganism by performing a series of biochemical tests on a pure bacterial culture. Materials and Methods: 1. Carbohydrate Utilization: Two culture tubes, phenol red lactose broth and phenol red sucrose broth, were each inoculated with one loopful of organism 3 from a broth culture. The broths were incubated at 37°C. After 24-48 hours, the mediums were examined. A positive test result is indicated by a change from the red broth to a yellow broth. A change
Introduction The metal that I have decided to investigate is copper.This is because copper is a very versatile,in terms of properties and uses in our everyday lives.From construction pipes to electrical cables,there’s no limit to what copper can’t be used for.Fortunately Australia is resource rich in copper,as being the second largest exporter in the world.However these do come at a price,as copper can have environmental impacts and can cause irreversible damage.In this report,the properties and
mineral deposits means different types of vents. The two most common ones are known as black smokers and white smokers. When the minerals spewed by the vents consist of sulfide and iron, they produce black smoke, hence the name. Black smokers are generally hotter than their counterpart. White smokers do not contain many sulfides or irons, so their smoke is much whiter, and they don’t become quite as large. With a pH of as low as 2.8, it doesn’t seem plausible that anything should be abl... ...
Hydrothermal vents are among the most diverse and biologically active ecosystems of the ocean. At these locations, seawater penetrates through the cracks in the crust until it reaches hot heated magma rock. The seawater is heated and converted into hydrothermal fluid. These hydrothermal fluids then rapidly diffuse through the seafloor as black jets of superheated fluid or water rising from cracks in the deep ocean seafloor. This interaction between superheated hot hydrothermal fluid from the crust
acidic fluid. When the super heated water reaches about 700˚F (400˚C), the fluid rises and bursts through cracks in the sea floor. The super heated water mixing with the cold sea water causes a chemical reaction and forms particles of metal sulfide to cloud the water. The pieces of metal settle around the area of the crack, and over time, collect to form the chimneys of black smokers. One would assume that at the very bottom of the ocean, in 700˚F waters, that nothing could possibly exist
Introduction Bacteria are grouped into two categories as Gram positive and Gram negative. The bacteria that retain the color of the primary stain are gram positive and the bacteria that lose the color of primary stain are called gram negative bacteria. Gram positive cells have a thicker peptidoglycan layer and doesn 't contain the outer membrane. Gram positive cells will retain the primary stain of crystal violet because they have a thick outer layer of peptidoglycan that traps the dye among its