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Topic: Separation of chemicals

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	Analytical chemistry - Wikipedia, the free encyclopedia
		Separation of chemicals in order to measure the weight or volume of a final product.
		Modern separation techniques such as HPLC often seek to separate and determine amount or identity in a single automated analysis by integrating a detector.
		Mass spectrometry is used to determine the molecular mass, the elemental composition, structure and sometimes amount of chemical species in a sample by ionizing the analyte molecules and observing their behavior in electric and magnetic fields.
	en.wikipedia.org /wiki/Analytical_chemistry (791 words)

	Separation anxiety - DrGreene.com (Site not responding. Last check: 2007-10-20)
		Separation is usually a dominant issue from about 6 months until language is understood by strangers.
		During the ages when separation is a big issue, you want to avoid prolonged absences and avoid having your child cared for by someone who will not look at her and smile.
		Separation anxiety is more pronounced when children are tired, hungry, or sick.
	www.drgreene.com /21_1183.html (996 words)

	ITP: Chemicals Emerging Technologies (Site not responding. Last check: 2007-10-20)
		The new method uses proprietary advanced fermentation, membrane separation, and chemical conversion technologies to covert renewable carbohydrate feedstocks into lactate esters in an energy-efficient and cost-effective way.
		After separation and purification, the succinic acid is used as a chemical intermediate that is converted into chemical feedstocks.
		The separation of ethylbenzene from the zylene stream is being examined because the ethylbenzene could be converted to styrene via catalytic dehydrogenation.
	www.oit.doe.gov /bestpractices/emerg_tech/chem.shtml (1483 words)

	[Report] Membrane Separation--Growth Opportunities in Petro
		Membrane separation technology is increasingly being utilized in the chemicals industry for a wide range of applications such as removing water from organics using hydrophilic membranes.
		Reverse osmosis (RO) membrane separation, a major water desalination process, is expected to grow by nearly 10 percent annually.
		Gas separation applications and the natural gas, oil, and petrochemicals industries are key markets for membrane separation technologies.
	www.the-infoshop.com /study/ti14497_membrane_separation.html (446 words)

	Calgon Carbon Corporation: Chemicals
		But, because glycols are manufactured from petrochemical feedstock, they contain by-products from the chemical process, and must first be purified themselves.
		In addition, the impurities removed from the gas streams can react with the glycol itself, or under chemical decomposition as the glycol is treated for the contaminant removal.
		Powder and granular activated carbon are used in the wastewater treatment processes of many chemical plants to remove dissolved organic chemicals that can create environmental or health issues in the discharge water.
	www.calgoncarbon.com /industry/commodity.html (396 words)

	Chemicals Technology - Tema Systems - Centrifuges for Continuous Liquid/Solid Separation (Site not responding. Last check: 2007-10-20)
		Material with an average size of 100 microns or larger are typically separated in the Conturbex centrifuge.
		This allows both course and fine, down to 5 micron, products to be separated if there is a difference between specific gravities of solids and mother liquor.
		Decanters have a scroll for continuous solid discharge, and are used in a variety of material recoveries in the chemical, mineral and food industries.
	www.chemicals-technology.com /contractors/filtration/tema (369 words)

	Modeling Subsurface Transport of Petroleum Hydrocarbons--Sorption and Separation of Chemicals, US EPA
		One reason for this is that differing amounts of sorption would tend to cause separation of the various plumes.
		In this case, the ground water velocity is high enough to allow for separation of the chemicals from each other.
		The sorption of chemicals to the aquifer solids causes them to move slower on average than ground water.
	www.epa.gov /AthensR/learn2model/part-one/intro/plume01.htm (281 words)

	Haz Separation (Site not responding. Last check: 2007-10-20)
		Physical separation will help you to prevent the inadvertent mixing of incompatible materials that may cause a workplace hazard or compliance issue.
		Separate strong oxidizers from all organic wastes and package separately.
		Separate all extremely hazardous chemical gases and compressed gases from potential fire hazards.
	www.lbl.gov /ehs/waste/pub3092/haz/html/haz_separation.htm (241 words)

	Solutions for Liquid Solid Separation India
		To meet these goals we work in tandem with the client’s technical personnel, weigh the options of the processes involved, and the equipment indicated under the circumstances, and devise variations that must be economically viable, and which effectively address the specific applications and problems.
		At Rotofilt we determine the kind of separation needed for the relevant chemicals and various materials.
		As a supplier of separation and filtration equipment machinery, Rotofilt is considering seriously export participation in the global marketplace.
	www.rotofilt.com /profile.htm (732 words)

	Apartments (Site not responding. Last check: 2007-10-20)
		The door to the pool chemical storage area must be label "WARNING – POOL CHEMICALS" or "OXIDIZERS" or labeled using an NFPA 704 diamond.
		In isolated cases, complete a separate Inspection Form and leave it with the resident.
		In cases where the number of violations is overwhelming, confer as soon as possible with your assigned inspector.
	www.onr.com /user/harkness/apartments.htm (280 words)

	The Dupont Challenge 2004 (Site not responding. Last check: 2007-10-20)
		This chemical is a powerful antibiotic and battles parasites that are found in the gut.
		He later examined female chimpanzees’ fecal samples, which showed that fewer worms were present in their excretions twenty hours after chimps had eaten the pith, or the bitter shoot, of a Vernonia plant (Biser, 1998).
		Vernonioside B1, a chemical found in the pith of the plant, was found to be antiparasitic, antitumor, and antibacterial.
	www.glcomm.com /dupont/junior.essay.html (900 words)

	Polymers Take Charge
		All life depends on membranes that interact with charged species, generally called ions, to produce concentration gradients that give rise to the generation of voltages and thus to the action of nerve cells.
		Many similar membrane processes occur throughout living things that provide for separation of chemicals and generation or supply of energy, in addition to generating electrical signals.
		However, by applying the principles developed in batteries and fuel cells and the chlor-alkali industry, we are moving toward accelerating bioprocesses to rates that make the use of biomass feasible as feedstock for chemicals and fuels.
	eetd.lbl.gov /newsletter/nl6/polymers.html (719 words)

	Researchers Work on Electronic 'Tongue' (Site not responding. Last check: 2007-10-20)
		COVENTRY, UK, May 10, 2002 - Research on environmental monitoring and detection of chemicals is already simulating an electronic nose and now researchers from Cardiff University's School of Engineering are developing an electronic tongue.
		This high surface area allows for fine separation of chemicals.
		The idea is to put one of these devices in a river or waste stream for continuous monitoring.
	www.gnet.org /coldfusion/news_page2.cfm?NewsID=20645 (154 words)

	Chemicals
		In general, the objective is the removal/separation of ionized (acids, bases, salts) from non-ionized compounds or the acidification/basification of process streams.
		In addition, the separation of ionized compounds between themselves is now possible thanks to the development of several monovalent selective cation- and even anion-exchange membranes.
		It is a practical process step that can be integrated in the control system of a chemical plant, even if the case of streams containing many organic contaminants.
	www.ameridia.com /html/che.html (375 words)

	Research Profile - SolGel
		That development was made possible by the utilization of a room temperature procedure for the preparation of glasses and other ceramics known as the "sol-gel" process.
		It involves a polymerization reaction (rather then the classical melting technology) in the presence of the host molecule and results in a porous material which has the chemical composition of glass, looks like glass (it is transparent), and behaves like glass.
		These applications can be divided into three major areas: Applications which involve chemical reactions and interactions; applications which involve optical uses; and applications involving biochemical, clinical, and health-oriented products.
	chem.ch.huji.ac.il /~david/resSol.html (864 words)

	Open Directory - Science:Chemistry:Analytical:Separations Science (Site not responding. Last check: 2007-10-20)
		Separation methods in which the mobile phase is under the influence of an electrical charge,
		For sites describing separation of chemicals, their aggregates and particles on the basis of size, commonly known as filtration.
		Size Exclusion generally refers to separations in which analytes are retained in a controlled manner, whilst larger species are removed from the matrix.
	dmoz.org /Science/Chemistry/Analytical/Separations_Science/desc.html (325 words)

	Energy & Chemicals
		Chart is a world leader in the manufacture of custom designed and engineered equipment for a variety of process industries.
		Chart is constantly developing capabilities in our traditional markets as well as other emerging markets that require our skills as a provider of heat exchangers, process piping, vacuum insulated piping, cold boxes, and process vessels.
		Chart pioneered the development of vacuum brazing and our BAHX have been successfully designed and manufactured for hundreds of air separation, LNG, ethylene, and natural gas processing plants throughout the world.
	www.chart-ind.com /app_hcp.cfm (705 words)

	HORSEPOWER HERBS - Foundation, Recovery and Nutrition for Performance Horses
		Horses standing in enclosed areas for long periods of time without the relief of eating on the move (as in the wild) are prone to digestive problems (colic), edema (water retention), congestive lung conditions, infections, allergies, nervousness and mental anxiety.
		Noise, separation, toxic chemicals, sprayed and processed feed, drugs, social urges, fear and boredom all contribute to glandular wear and tear.
		This is especially true when the horse cannot respond to it's flight urge and move away.
	www.horsepowerherbs.com (409 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		Chemical Storage The separation of chemicals (solids or liquids) during storage is necessary to reduce the possibility of unwanted chemical reaction caused by accidental mixing.
		Incoming chemicals are to be checked for proper labeling.
		EH&S ext.3-3549 or 3-3531 Non-Routine Tasks Non-routine tasks are defined as working on, near, or with unlabeled piping, unlabeled containers of an unknown substance, confined space entry where a hazardous substance may be present and / or a one time task using a hazardous substance differently than intended.
	www.calstatela.edu /univ/hrm/ehs/training/present/HazComm.doc (271 words)

	Suyog Chemicals India : Products. (Site not responding. Last check: 2007-10-20)
		The flocculants are used to increase the state of aggregation of suspended solid particles and thereby to facilitate separation of solid constituents from liquid by process such as sedimentation, filtration, floatation and centrifugation.
		SUFLOC FLOCCULANTS are tailored specifically to bring a dramatic effectiveness in minute quantities in virtually all solid-liquid separation units and because of their versatility and adaptability in different systems or processes, they are used in many industries.
		This leads to the foam formation, which through the paper machine and wire screen passes on to the paper resulting in the formation of pinholes in paper.
	www.centralindia.net /suyog/product.html (1131 words)

	Safety Report Assessment Guidance (Technical Aspects) -Fire ...
		No areas within the warehouse were reserved for either a particular product or customer and there was no separation of chemicals from other goods.
		Records detailing the storage of chemicals and other goods within the warehouse were destroyed in the fire.
		A major contributing factor to this incident was the failure to adopt rigours segregation in the storage of various hazardous chemicals within the warehouse.
	www.hse.gov.uk /comah/sragtech/casebrhauliers82.htm (439 words)

	Separation, Chemical Change, Physical Change
		In the universe all materials are mixtures of chemicals -- your body, paper, air, earth, stars, etc. Chemists have devised various procedures to separate many of these mixtures into component chemicals.
		In this experiment, you will do a separation of a simple mixture using differences in solubilities in water.
		O, and carbon dioxide, CO Write an equation to represent this chemical reaction.
	www.sonoma.edu /chemistry/chem115A/separation.html (1151 words)

	Responsible Winter Storage of Pesticides and Fertilizers (Site not responding. Last check: 2007-10-20)
		Separation of chemicals in storage by type is additional insurance against contamination.
		Dampness is a serious problem, as it reduces the shelf life of many chemicals and causes metal and paper containers to degrade.
		Chemicals and the containers in which they are to be held must be in good condition.
	www.ext.vt.edu /departments/envirohort/factsheets2/insectpest/nov94pr2.html (407 words)

	NetLogo Models Library: Gas Chromatography
		Much of modern chemistry depends on chromatography for the separation of chemicals.
		Different chemicals have different tendencies to move through small spaces (for example, if they are of different sizes) and different tendencies to stick to surfaces.
		Chemically, this is caused by a number of factors: surface interactions, geometry and size of the molecule, etc.
	ccl.northwestern.edu /netlogo/models/GasChromatography (842 words)

	gaschrom info window (Site not responding. Last check: 2007-10-20)
		Gas chromatography is a process of separation of chemicals based on surface interactions.
		The blue field imitates a porous medium and the red and green turtles are molecules which are pumped through the blue "absorber".
		If either of these parameters is small it might take too long for the green turtles to sip through the absorbing layer.
	ccl.northwestern.edu /cm/models/gaschrom/info.html (366 words)

	3 Gallon Backpack Sprayer - garden sprayer, portable sprayer, backpack sprayer, garden: floriantools.com
		A convenient measuring cup for precise chemical metering is included.
		The tanks are made of UV resistant polyethylene material for years of superb chemical and sunlight resistance.
		The problem of separation of chemicals is solved by having a mechanical agitator for continuous mixing of spray solution.
	www.floriantools.com /Merchant2/merchant.mvc?Screen=PROD&Product_Code=HD300&Category_Code= (158 words)

	Topic: Separation Processses
		ITP Chemicals: Separation of Olefin/Paraffin Mixtures With Carrier-Facilitated Transport Membranes
		Olefins, a group of petrochemicals that includes ethylene and propylene, are the primary building blocks for the petrochemical industry.
		Chemicals Advanced Electrodeionization Technology This technology combines the advantages of ion exchange (an adsorption technology) with those of electro-dialysis (a membrane separation) for a wide range of potential...
	search.nrel.gov /query.html?col=eren&qc=eren&qm=1&si=0&ht=837722966&ct=947372514 (368 words)

	C-233 Oilfield Process Chemicals (Site not responding. Last check: 2007-10-20)
		Oilfield process chemicals are used to support the exploration and processing of oil and natural gas in the field.
		It focuses on the chemicals predominantly used for the purpose of recovering oil and natural gas.
		Marcanne Green is a degreed Chemical Engineer with a BS from the University of Washington in Seattle, WA and over 12 years experience.
	www.bccresearch.com /chem/C233.html (2851 words)

	Separation of chemicals (Site not responding. Last check: 2007-10-20)
		In chemistry, separation of mixtures is the separation of the elements of a mixture.
		Distillation - used for mixtures of liquids with different boilingpoints, or for a solid dissolved in a liquid.
		Chromatography used to separate different dyes or pigments.
	www.therfcc.org /separation-of-chemicals-21597.html (243 words)

	Air Separation Plants, Oxygen Plants, Air Separation Equipment, Oxygen Plants Manufacturers (Site not responding. Last check: 2007-10-20)
		Manufacturers, suppliers and exporters of separation equipments and machinery like gyro screens, vibrating screens, seed and grain cleaning equipment, destoners, roto sifters, spices processing machine, air separators, air classifier, deburring machine.
		Consulting engineers for selection of highly efficient air separation plants: oxygen, nitrogen, argon, acetylene, CO2, nitrous oxide for industrial, medical and specialty gases, cryogenic tanks and equipments.
		Manufacturer and exporter of oxygen plant, nitrogen plant, acetylene plant, chemical purifier, oxygen liquid pump, nitrogen liquid pump, water softener plant, air separation unit and acetone pump.
	www.indianchemicalportal.com /air-separation-equipment.html (402 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		In distillation, the residue left in the flask was termed the dead body or caput mortuum (dead head), and the condensed vapors were considered to be the soul or spirit of the material.
		The term chromatography was coined by the Russian botanist Mikhail Tsweett around the turn of the century, he used the technique to separate chlorophylls from xanthophylls by passing solutions of the compounds through a glass column containing finely divided calcium carbonate.
		In this experiment you will perform the separation of two close boiling point compounds: cyclohexane and toluene by fractional distillation, and monitor the effectiveness of the separation with a gas chromatograph.
	www.columbia.edu /itc/chemistry/chem-c2507/navbar/Distillation_2002.doc (3545 words)

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