...Two years ago, a massive coal-ash spill in Tennessee awakened Americans to the fact that the billion tons of coal we use each year doesn’t vanish into thin air when it’s burned. In 2008 alone, U.S. power plants produced nearly 100 million tons of coal ash; combined with other coalburning residues, such as gypsum, the total was 133 million tons. Much of that waste is mixed with water and kept in clay-lined ponds, often remarkably close to rivers, underground wells, and residential areas. On Dec. 22, 2008, at the Tennessee Valley Authority’s Kingston Fossil Plant, a dike broke and released 1.1 billion gallons of ash slurry. The ash spilled into the Emory River and inundated 300 acres of surrounding land. It was the largest fly-ash release in U.S. history, causing an estimated $3 billion in damages. And it could happen again, at another plant – reports have identified high-risk ash ponds across the country. Plus even when it doesn’t spill, coal ash disposal can be hazardous to your health: In many communities, concerns about groundwater contamination have been raised. Lisa P. Jackson, head of the U.S. Environmental Protection Agency, vowed to ensure no disaster like the TVA spill ever occurs again. Coal ash disposal, she argued, should be regulated to protect the public – and since early 2009, EPA has been working toward that goal. But it’s not an easy process. Since 1980, coal ash has been excluded from regulation as a hazardous waste under the so-called Bevill Amendment...
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...pid=S1516-14392008000200008&script=sci_arttext Process parameter optimization for fly ash brick by Taguchi method Prabir Kumar Chaulia*; Reeta Das Central Mechanical Engineering Research Institute, Durgapur–713209, India ABSTRACT This paper presents the results of an experimental investigation carried out to optimize the mix proportions of the fly ash brick by Taguchi method of parameter design. The experiments have been designed using an L9 orthogonal array with four factors and three levels each. Small quantity of cement has been mixed as binding materials. Both cement and the fly ash used are indicated as binding material and water binder ratio has been considered as one of the control factors. So the effects of water/binder ratio, fly ash, coarse sand, and stone dust on the performance characteristic are analyzed using signal–to–noise ratios and mean response data. According to the results, water/binder ratio and stone dust play the significant role on the compressive strength of the brick. Furthermore, the estimated optimum values of the process parameters are corresponding to water/binder ratio of 0.4, fly ash of 39%, coarse sand of 24%, and stone dust of 30%. The mean value of optimal strength is predicted as 166.22 kg.cm–2 with a tolerance of ± 10.97 kg.cm–2. Confirmatory experimental result obtained for the optimum conditions is 160.17 kg.cm–2. Keywords: optimization, compressive strength, fly ash brick, Taguchi method 1. Introduction Economic and environmental...
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...Mayank Patel, Ahmedabad Partner & Director Mobile : 91 9662910224 Write us: mymayank@yahoo.com Manish Kharti, Deesa Partner & Director Mobile : 91 9737689393 Write us: manee.khatri@gmail.com Mayank Patel Call : 91 9662910224 Manish Kharti Call : 91 9737689393 Fly Ash Brick Project Details Key features of the Fly Ash Brick project Cost of Project Cost is INR 70 Lakhs Land cost not included in this Value. It includes Installation cost and equipment cost. Equipment cost approximately INR 25 Lakhs. Land Required 1-2 Acre Per Plant Type of Raw material Basic row material for fly ash bricks plant such as Fly Ash Lime Gypsum Cement Sand Stone Dust Down Metal Consumption of Row Material Rated - 59 Ton per shift Mayank Patel Call : 91 9662910224 Manish Kharti Call : 91 9737689393 Generation Generation per 8 hour = 18400 Units If Plant works for 24 Hours a day Generation per day = 3 * 18400 = 55200 Units Generation Per Year For 1st Year = 16560000 Units From IInd Year onwards = 17280000 Units Unit Drawing : Cost of Generation Cost of Fly Ash Brick produced is INR 1.7 to INR 2.7 /- per unit including all. Its depends as on type’s of production been used. INR 1.7 to INR 2.7 /- per unit Cost has been calculated taking into account Production as well as operation and maintenance, Interest, depreciation, cost of raw material and transportation cost. Buy back tariff Form Buyer INR 3.7 – INR 4...
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...Fly Ash For Cement Concrete Resource For High Strength and Durability of Structures at Lower Cost Ash Utilization Division NTPC Limited A-11, NFL Premises Sector–24, Noida–201301 OUR VISION A world class integrated power major, powering India's growth, with increasing global presence OUR CORE VALUES Business Ethics Customer Focus Organizational & Professional Pride Mutual respect and Trust Innovation & Speed Total Quality for Excellence ,uVhihlh fyfeVsM ¼Hkkjr ljdkj dk m|e½ NTPC Limited Vh- ’kadjfyaxe v/;{k ,ao izcU/k funs’kd T. SANKARALINGAM Chairman & Managing Director (A Govt. of India Enterprise) (Formerly National Thermal Power Corporation Ltd.) dsUnzh; dk;kZy;@ Corporate Centre MESSAGE I am happy to know that Ash Utilization Division is publishing a book named “Fly Ash for Cement Concrete”. Among several informative and useful insights contained in the book is the fact that mixing of ash gives higher strength and durability to concrete. NTPC has been imparting thrust to ash utilization strategies, preparedness and implementation. The Company has developed necessary infrastructure facilities in all its coal based stations to make good quality ash available to users. Technology demonstration and awareness programmes are also being carried out. There is greater awareness of ash usage among the industrial users as well as the end users. I am glad that ash utilization by NTPC during the year 2006-07 was 53% against MoU target of 42%. Off...
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...Abstract The aim of the Project is to find out the geo-engineering properties of fly ash, which can act as a stabilizer to many soils in geo-engineering field. The project describes the use of local fly ash in construction industry in a way to minimize the industrial waste. Their been serious shortage of natural material, which are used in Highway or Earth dam construction. Due to soil excavation, deforestation occurs which affects the bio-diversity. Industrial waste such as fly-ash, slag etc can be effectively used in soil stabilization. Several geo engineering Labrotory experiments were performed on fly ash to determine its properties, which may be used in road construction, earth dam construction, soil stabilization etc. If these materials can be used in highway or dam construction, it will be a great effort in minimizing the industrial pollution. Fly ash was collected from captive power plant from the dump pad of Rourkela steel plant. These are stored in air tight container after being oven-dried. Experiments such as determination of compaction properties, CBR analysis, Un-confined compressive strength test, permeability etc are done in order to determine the geo-engineering properties of fly ash, which can taken account in the construction field. A brief comparison is made between fly ash and other soil properties which are used as sub-grade, base in Highway construction. Introduction Electricity is the key for development of any country. Coal is a major source of...
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...Private power plants Ash utilization MoEF Notification (3rd Nov 2009) on Fly Ash Utilisation has instructed Operating Coal/Lignite based Power Plants to Achieve the Target for 100% Coal Ash Utilisation S. No. Percentage Utilisation of Coal Ash Generation Target Date from the Date of issue of this Notification 1. At least 50% One Year 2. At least 60% Two Years 3. At least 75% Three Years 4. At least 90% Four Years 5. 100% Five Years A. TATA POWER Trombay, Jojobera and Maithon thermal power plants achieved 100% fly ash utilization whereas CGPL achieved 25% in its first year of full operation, which is in line with regulatory requirements. Innovations 1. Ultra-Thin White Topping technology: CTTL, a wholly owned subsidiary of Tata Power, in association with BASF, has developed a concrete mix which can help replacing 40% of cement with Fly Ash. The polyheed admixture developed for Trombay Thermal Station Fly Ash has been used in a demonstration project. A demonstration road stretch of 3.5 m x 100 m has been laid. This road has lower absorption of solar energy (higher reflectivity) and is expected to have a longer service life. 2. Bottom ash based brick making: Bottom ash based bricks were manufactured successfully. A patent on the same has been filed. Technologies Being Reviewed / Adopted Fly ash based plaster sand: Additives are added into fly ash and mixture is processed to manufacture ceramic sand through an already patented process. This sand is well...
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...Emerald Ash Borer An introduced (alien, exotic, non-indigenous, or non-native) species is a species living outside its native habitat. This species have arrived by human activity, either deliberate or accidental. Some introduced species are damaging to the ecosystem they are introduced into, others have no negative effect and some can be beneficial. A recently introduced species to Wisconsin is the emerald ash borer. Unfortunately the emerald ash borer has negative effects, is invasive, was brought to Wisconsin and other states by accident, and is not welcome to the area. The emerald ash borer is a beetle that is bright, metallic green, about 1/2″ long with a flat back. It has purple abdominal segments under its wing covers. The emerald ash borer can fit on the head of a penny, and is hard to spot in the wild. The emerald ash borer is native to northern China and Korea. It can also be found in eastern Russia, Japan, and Mongolia. It is believed the emerald ash borer traveled to the United States by stowing away in some wood packing material. It can be found in the states of Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and Wisconsin. Unfortunately other states can be at risk. The beetle as also has been found in Ontario and Quebec, Canada. The emerald ash borer was first discovered in Southeast Michigan in 2002. It has then spread...
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...Engineering Technologies for Dealing with Volcanic Ash Abstract This report discusses the state of current strategies and technologies designed to avoid damage to aircraft from volcanic ash, and the limitations current technologies present with respect to the recent Eyjafjallajokull Icelandic volcanic eruption. Future strategies and technologies are critically examined to determine the limitations, requirements and cost of implementation. Ash cloud avoidance strategies appear to be the most viable option. A technology entitled AVOID (Airborne Volcanic Object Imaging Detector) is currently being tested on the United Kingdom’s biggest airline EasyJet which uses an infrared camera to detect ash particles and gases present in volcanic ash. Whilst this technology exists, it is unknown whether other airlines will adopt the technology, and whether the government will support it; in spite of of the huge economical cost the Eyjafjallajokull volcano caused for European airlines and in shipping delays. What is known is that this was not an isolated incident and volcanoes will continue to erupt as long as the earth exists. Table of contents Introduction 4 Current strategies and technologies for dealing with volcanic ash 4 - 5 Future strategies and technologies for dealing with volcanic ash 5 - 6 Conclusion 7 ...
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...The Effect of Curing Time on The Properties of Fly Ash-based Geopolymer Bricks W. I. Wan Mastura1,a, H. Kamarudin1,b, I. Khairul Nizar2,c, A.M. Mustafa Al Bakri 1,d, H. Mohammed3,e 1 Center of Excellence Geopolymer and Green Technology, School of Material Engineering, Universiti Malaysia Perlis (UniMAP), P. O. Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia. 2School of Environmental Engineering, Universiti Malaysia Perlis (UniMAP), P. O. Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia. 3 King Abdul Aziz City Science & Technology (KACST), P.O. Box 6086, Riyadh 11442, Kingdom of Saudi Arabia awanmastura89@gmail.com, bvc@unimap.edu.my, cnizar@unimap.edu.my, dmustafa_albakri@unimap.edu.my, ebnhusain@kacst.edu.sa Keywords: Geopolymer, Fly ash, Bricks, Geopolymerization, Compressive strength Abstract. This paper reports the results of an experimental work conducted to investigate the effect of curing conditions on the properties of fly ash-based geopolymer bricks prepared by using fly ash as base material and combination of sodium hydroxide and sodium silicate as alkaline activator. The experiments were conducted by varying the curing time in the range of 1-24 hours respectively. The specimens cured for a period of 24 hours have presented the highest compressive strength for all ratio of fly ash to sand. For increasing curing time improve compressive strength and decreasing water absorption. Introduction A geopolymer,...
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...W13543 FLY ASH BRICK PROJECT: FEASIBILITY STUDY USING CVP ANALYSIS S. K. Mitra and Shubhra Hajela wrote this case solely to provide material for class discussion. The authors do not intend to illustrate either effective or ineffective handling of a managerial situation. The authors may have disguised certain names and other identifying information to protect confidentiality. This publication may not be transmitted, photocopied, digitized or otherwise reproduced in any form or by any means without the permission of the copyright holder. Reproduction of this material is not covered under authorization by any reproduction rights organization. To order copies or request permission to reproduce materials, contact Ivey Publishing, Ivey Business School, Western University, London, Ontario, Canada, N6G 0N1; (t) 519.661.3208; (e) cases@ivey.ca; www.iveycases.com. Copyright © 2013, Richard Ivey School of Business Foundation Version: 2013-12-19 In April 2013, Rajiv Sharma had a business plan. For quite some time, he had been doing some market research exploring the potential of his “dream project” — establishing a fly ash brick manufacturing unit — and had seen huge potential for profit in the project. His long-time friend Alok Gupta was also interested but had a few doubts regarding the feasibility of the project. Sharma, on the other hand, was sure of his plan. Years of work in the construction industry had shown him the potential of using large volumes of fly ash bricks in construction...
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...Analyzing the Four Principles of Management: How Mary Kay Ash Utilized Them and How Her Innovation Will Translate to Any Business Max Fausnight The Los Angeles Film School Analyzing the Four Principles of Management: How Mary Kay Ash Utilized Them and How Her Innovation Will Translate to Any Business The world thrives with government powerhouses, tech giants, inspiring superstars, and many more great achievements. The common factor between these amazing feats is people. People harbor the power to accomplish, inspire, and create. When it comes to grandiose tasks, we require management to maintain solidarity and purpose in order to bring our dreams to life. Developed by a coal miner, Henri Fayol, we practice four common principles of management (Williams, Rtr. 2015). This allows for consistent success and can easily apply to any goal that requires structure. The acronym P.O.L.C. conveniently houses all of these principles for easy memory. The “P” represents planning, the “O” represents organizing, the “L” represents leading, and the “C” represents controlling. These four principles were crucial to the success of many business legends and I will examine their application with a personal favorite, Mary Kay Ash. After, I will highlight any other important aspects of what we’ve learned so far. Then I will finalize my paper with how our company will implement these necessities for great management. Mary Kay Ash started her company at age forty-five with just five thousand...
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...Aesha Ash Aesha Ash was born in New York on December 30th, 1977. She had two brothers and began dancing at the age of five. When Aesha was 13 she acquired acceptance into the school of the School Of American Ballet. She was such an amazing dancer that she was provided the “Mae L. Wien” award for her exceptional technique. She was the only individual in her school who was African American for a very long time. Ash was very experienced in pointe work which lead to her receiving a role in the Movie “Center Stage”. Soon, Aesha left New York to become a soloist in Switzerland. She ended up feeling sad and alone, and soon returned to America after two years. In 2005 she joined Alonzo King’s Lines Ballet, she learned all sorts of new techniques, but she also wanted to be independent. Aesha ended up working for Christopher Wheeldon and worked with “Morphoses”. She has been portrayed in hundreds of different magazines as an amazing dancer. She enjoys working out and incorporates many different exercises in her routine, such as Pilates. She gained a position as a Pilates apprentice from the owner of “Peak Performance”, Jennifer M Stacey. Overall Aesha Ash has been living an extraordinary life. She has been a professional ballet dancer for thirteen years. She continues to take part in “The Swan Dreams” project. This project was created by Aesha to resolve her experiences with discrimination as an African American dancer. Her program shows people that they can be whatever they...
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...Ash Who am I? A question many has asked themselves upon realizing that their life is a routine day in and day out. There is a growing tendency in the western civilization for marriages to dissolve. Self-fulfillment is in the high seat. We are no longer bound by the traditional view upon marriage and the traditional family life. Another problem probably adding to the aforementioned is the increased focus on identity and following it the growing number of identity crises. In the text ASH by Roddy Doyle from May 24 2010 we stumble upon two troubled brothers Kevin and Mick. Mick tries to establish a life for himself after a ruined marriage, and Kevin finds himself in a situation where his marriage is about to be poured out the drain like sour milk. The story unfolds chronically with a third person character-focaliser narrator with Kevin’s point of view. The text is dominated by short sentences and direct speech. The effect of this being that there is created a feeling of action and constant movement in the story. One could even argue that this text has a home-out-home composition based on the protagonist Kevin’s different emotional states throughout the story. At the start of the story Kevin’s problem is made, and the middle and most of the text is treating how he deals with this problem, and finally in the end the problem resolves and he is at his normal emotional state. The protagonist Kevin is a middle-aged man. He is not a man of action on the contrary he makes no choices...
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...2007 Vol.2 No. 6 Utility bonanza from dust F ly ash is one of the numerous substances that cause air, water and soil pollution, disrupt ecological cycles and set off environmental hazards. environmental dangers. Both in disposal, as well as in utilization, utmost care has to be taken, to safeguard the interest of human life, wild life, and environment. FLY ASH FLY The combustion of powdered coal in thermal power plants produces fly ash. The high temperature of burning coal turns the clay minerals present in the coal powder into fused fine particles mainly comprising aluminium silicate. Fly ash produced thus possesses both ceramic and pozzolanic properties. When pulverised coal is burnt to generate heat, the residue contains 80 per cent fly ash and 20 per cent bottom ash. The ash is carried away by flue gas collected at economiser, air pre-heater and ESP hoppers. Clinker type ash collected in the water-impounded hopper below the boilers is called bottom ash. The World Bank has cautioned India that by 2015, disposal of coal ash would require 1000 square kilometres or one square metre of land per person. Since coal currently accounts for 70 per cent of power production in the country, the Bank has highlighted the need for new and innovative methods for reducing impacts on the environment. The process of coal combustion results in fly ash. The problem with fly ash lies in the fact that not only does its disposal require large...
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...Breakfast burritos 7” whole wheat or corn tortilla ½ cup egg whites 1 oz. low fat cheddar cheese ½ cup canned black beans, rinsed 2 tbsp salsa Heat skillet on medium setting. Using a paper towel lightly coat with olive oil. Scramble eggs. Add black beans until heated. Fold egg, beans, salsa and cheese into tortilla warp. Heat in oven at 170ºF or microwave for faster prep until warmed. Frittata with goat cheese, roasted tomato & rocket 4 large egg whites (or ½ cup egg whites) Olive oil cooking spray 2 tbsp fresh tomatoes, roasted 2 tbsp goat cheese, crumbled Quick on-the-go chicken Wrap 3 oz. grilled skinless and boneless chicken breast 1 cup baby spinach or any greens ½ red pepper, cut in strips 1 Tbsp vinaigrette salad dressing of your choice 1 7” whole wheat wrap Chop chicken and toss with vegetables and dressing. Place meat, vegetables and spinach onto tortilla, fold and enjoy. Quinoa Salad 1 ½ cups Quinoa, washed and drained 1 ½ cups water ½ cup green bell pepper, diced ½ cup roasted red peppers, packed in oil or water, chopped ½ cup red onion, minced 1 ½ cups sweet corn, fresh, canned or frozen ½ cup green peas, fresh or frozen 1 cup fresh basil, finely chopped 2 cloves garlic, minced 1 ½ Tbsp extra virgin olive oil ¼ cup lemon juice, freshly squeezed 15 ounces navy beans or garbanzo beans, drained 1 Tbsp plum vinegar, or to taste Place quinoa, water, corn and peas in a sauce pan. Cover. Simmer on low for 12-15 minutes. Remove and place...
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