Pollution in Coal Based DRI Summer Internship Project‚ 2012 Supervised by Susmita Dasgupta susmita.dasgupta@hotmail.com 1 DRI‚ or directly reduced iron is a method of producing solid iron from iron oxide 2 Iron from iron ore can be • In solid form In solid form‚ iron ore can be 1. DRI produced in coal based kilns 2. HBI produced in gas based kiln. 3. DRI does not need coking coal at all. • Or in molten form In molten form iron can be produced in the 1. Blast Furnace‚ needs coking coal. 2.
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saving in the total operation of wastepaper processing. Heat Recovery by Sludge Incinerator This technology consists in improving energy conservation efficiency by recovering exhaust heat from the fluidized –bed incinerator for burning sludge discharged from the papermaking process of paper mills. Current Operation: Sludge and solid waters are disposed by landfilling. Drawback: Final disposal facilities for sludge and solid wastes are becoming hard to secure and contains combustible substances
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2.6.6. Levels of total ammonia nitrogen‚ nitrite‚ nitrate and phosphate in the water samples The mean TAN levels in the present study in all the sampling stations were below the recommended level of 0.1 to 1.0 mg/L prescribed by Boyd (1990). However‚ when the level recommended (< 0.2 mg/L) by Chavez (2009) is taken as a standard‚ it was found to that 35% of the study period‚ TAN levels were above the acceptable limit in the feeder canal and the pond 3. Ferreira et al. (2011) has recommended 0
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Ganga Action Plan-A critical analysis The Ganga River Ganga is not an ordinary river. It is a life-line‚ a symbol of purity and virtue for countless people of India. Ganga is a representative of all other rivers in India. Millions of Ganga devotees and lovers still throng to the river just to have a holy dip‚ Aachman (Mouthful with holy water)‚ and absolve themselves of sins. We Indians are raised to consider Ganga as a goddess‚ as sacred. We tell our children and grandchildren the stories
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anaerobic pond that the effluent begins breaking down in the absence of oxygen "anaerobically". The anaerobic pond acts like an uncovered septic tank. Anaerobic bacteria break down the organic matter in the effluent‚ releasing methane and carbon dioxide. Sludge is deposited on the bottom and a crust forms on the surface as show in Fig. 2. Fig. 2 Operation of the Anaerobic Pond. Anaerobic ponds are commonly 2-5 m deep and receive such a high organic loading (usually >100g BOD/m3 d equivalent to >3000
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Pure & Appl. Chern.‚ Vol. 64‚ No. 11‚ pp. 1731-1737‚1992‚ Printed in Great Britain. @ 1992 IUPAC Biosurfactants in industry N. KOSARIC Department of Chemical and Biochemical Engineering University of Western Ontario‚ London‚ Ontario‚ Canada‚ N6A 5B9 ABSTRACT Biosurfactants (Microbial Surface Active Agents) have become recently an important product of biotechnology for industrial and medical applications. Thereason for their popularity‚ as high value microbial products‚ is primarily in
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rich in copper and a fine fraction rich in arsenic. However‚ results obtained in this sample were not very successful. In the stabilization study‚ the residue obtained after leaching the copper flash smelter flue dust with sulfuric acid was mixed with sludge from a paper factory (coinertization process). The smaller size fraction (N 12 μm) obtained in the hydrocyclone was also mixed
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Chapter 1 Introduction 1. Introduction 1.1EXHAUST SILENCERS Engine exhaust noise is controlled through the use of silencers and mufflers. Generally speaking‚ there is no technical distinction between a silencer and muffler and the terms are frequently used interchangeably. A silencer has been the traditional name for noise attenuation devices‚ while a muffler is smaller‚ mass-produced device designed to reduce engine exhaust noise. 1.2 SILENCER SELECTION FACTORS The use of an exhaust silencer is
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The Semiconductor Industry: Reduction of Fluoride Waste Streams Submitted by Y. Smith Prepared for Dr. Alvarez Webster University 09 May 2011 CERTIFICATE OF AUTHORSHIP: I certify that I am the author. I have cited all sources from which I used data‚ ideas‚ or words‚ either quoted directly or paraphrased. I also certify that this paper was prepared by me specifically for this course. The Semiconductor Industry: Fluoride Waste Streams Fluoride is a fairly common
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Case Study Report Introduction This case study report will explore the company Phase Separation Solutions (PS2) and identify the key problems and alternatives. An analysis and application of models will then be conducted. Specifically‚ the five models chosen consist of a PESTEL analysis‚ Porters Five Forces‚ a SWOT analysis‚ the VRIN model and the organisational configuration model. An evaluation of alternatives involving advantages and disadvantages for the alternatives are then investigated
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