toxic by product of burning coal‚ and it’s the second largest industrial waste stream in the US‚ with trash being number one. Millions of tons of coal ash are stored in unsafe dumps that can leach heavy metals‚ arsenic‚ lead‚ selenium‚ and hexavalent chromium into ponds‚ landfills‚ abandoned mines‚ and ground water. When consumed‚ it could cause cancer and birth defects. There has never been a federal policy for coal ash disposal and state standards are often weak or non-existent. This is why coal
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ready for end-of-life management; both numbers are increasing substantially each year" (www.epa.gov‚ 2012‚ Electronics Challenge‚ p. 1). "Computers also contain other hazardous materials‚ including mercury‚ cadmium (a known carcinogen‚ and hexavalent chromium (shown to cause high blood pressure‚ iron-poor blood‚ liver disease‚ and nerve and brain damage in animals)". (Meyer‚ El Ella‚ & Young‚ 2004. Imagining if we have 500 computers to dispose of‚ including its monitors attached to it‚ we
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An open letter to our community: Many of us are aware of the risks of lead - based paint in older homes‚ gas leaks‚ contaminated water and all other chemicals with their contaminating affects on our health and our family’ s health and safety. Less known is just how close these contaminates can be hiding - even in our own backyard. I am a very happy resident living the American Dream in the Country Place suburban community located in Old Bridge‚ NJ. We have always considered this neighborhood
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Importance of water use in the steel industry Water’s ever-growing importance in the industrial manufacturing arena has been demonstrated by an increasing concern regarding the sufficiency of both its quantity and quality for use in industrial applications. In general‚ water is used in steelmaking as a: coolant for equipment‚ furnaces‚ and intermediate steel shapes; cleansing agent to remove scale from steel products; source of steam; medium for lubricating oils and cleaning solutions;
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Table of Contents 1. Introduction…………………………………………………………………………3 2. Literature Review 3.1 Definition of Green Logistics………………………………………….4 3.2 Definition of Reverse Logistics……………………………………..5-6 3. Case study – Treeland Services Company Ltd 4.3 Treeland Services Company background…………………………..7 4.4 Working procedure of TreeLand Services Company Ltd………..7-8 4.5 Green Logistics in Treeland company Services Company Ltd…..10 4.6 Electronic waste
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detected during chemical analysis. Trace constituents may include up to 0.75% insoluble residue‚ some of which may be free crystalline silica‚ calcium oxide (Also known as lime or quick lime)‚ magnesium oxide‚ potassium sulfate‚ sodium sulfate‚ chromium compounds‚ and nickel
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specific conditions; TOC is a measure of organic carbon in a sample; TOD is a measure of the amount of oxygen consumed by all elements in a sample when complete (total) oxidation is achieved. In a COD analysis‚ hazardous wastes of mercury‚ hexavalent chromium‚ sulfuric acid‚ silver‚ and acids are generated. Methods Section 5220C and Section 5220D reduce these waste problems but may be less accurate and less representative. (See ¶ 2 below.) 1. Selection of Method The open reflux method (B) is suitable
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In the film Erin Brockovich‚ several different social theories can be related to the storyline of the film. Although different‚ theories from Karl Marx‚ Emile Durkheim‚ and Max Weber can all adequately describe what happens in the film. The film is about a small law firm that takes on an extremely powerful organization‚ PG & E (Pacific Gas & Electric)‚ on the account that they were knowingly polluting Hinkley‚ California’s water supply and harming the citizens. From Karl Marx‚ the film can
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Pollution is the introduction of contaminants into the natural environment that cause adverse change.[Pollution can take the form of chemical substances or energy‚ such as noise‚ heat or light. Pollutants‚ the components of pollution‚ can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or non point source pollution. Ancient cultures Air pollution has always accompanied civilizations. Pollution started from the prehistoric
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exists in national level. Specifically‚ the Restriction of the use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS I)‚ which was introduced on 13 February 2003 sets strict maximum limits for lead‚ mercury‚ cadmium‚ hexavalent chromium‚ polybrominated biphenyls or polybrominated diphenyl ethers used in specified types of electrical and electronic equipment. This legislation has prevented high amount of banned substances from being disposed and potentially released into the
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