...Anaerobic Digestion Submitted by: Submitted on: Overview This essay studies the present status of the technology in Anaerobic Digestion in US. In the first section the general process of anaerobic digestion is described. Anaerobic Digestion is basically the decomposition of organic wastes in the absence of oxygen. A brief appraisal is provided about the current position of Anaerobic Digestion in the US energy Production. Then in the next section, the technological challenges of the Anaerobic Digestion are considered. The example of the usage of Anaerobic Digestion technology is discussed and the benefits of this technology. Also the demerits of this technology for the production of biogas are examined. Finally the current improvement in anaerobic digestion technologies in US is analyzed. Introduction The Anaerobic Digestion is defined as the biodegradation of organic material that takes place in the absence of oxygen and in the presence of anaerobic microorganisms. The whole process proceeds in the series of metabolic reactions with the help of microorganisms. The organic material which is decomposed is generally the Municipal Solid Waste (MSW). This is the waste produced by the society excluding agriculture and industrial wastes. So, the waste that comes under MSW is commercial waste like from shops, markets, stores, hotels or residential waste from houses or institutional waste from hospitals, schools. The process of anaerobic Digestion completes...
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...ARTICLE IN PRESS Bioresource Technology xxx (2004) xxx–xxx Review paper Enhancement of biogas production from solid substrates using different techniques––a review Yadvika a, Santosh a b a,* , T.R. Sreekrishnan b, Sangeeta Kohli c, Vineet Rana a Centre for Rural Development & Technology, I.I.T., Delhi 1100016, India Department for Biochemical Engineering & Biotechnology, I.I.T., Delhi 1100016, India c Department of Mechanical Engineering, I.I.T., Delhi 1100016, India Received 31 July 2003; received in revised form 18 August 2003 Abstract Biogas, a clean and renewable form of energy could very well substitute (especially in the rural sector) for conventional sources of energy (fossil fuels, oil, etc.) which are causing ecological–environmental problems and at the same time depleting at a faster rate. Despite its numerous advantages, the potential of biogas technology could not be fully harnessed or tapped as certain constraints are also associated with it. Most common among these are: the large hydraulic retention time of 30–50 days, low gas production in winter, etc. Therefore, efforts are needed to remove its various limitations so as to popularize this technology in the rural areas. Researchers have tried different techniques to enhance gas production. This paper reviews the various techniques, which could be used to enhance the gas production rate from solid substrates. Ó 2004 Published by Elsevier Ltd. Keywords: Biogas production rate; Additives; Anaerobic filters; HRT...
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...Top of Form Introduction The utilization of resources and generation of waste is for beyond the limit that the biosphere was made to carry. Infact, man today is caught in the vicious circle of increasing wants, declining resources and increasing waste being generated by the industries and municipalities is posing a problem of enormous dimensions. The domestic and industrial effluents are contributing in enhancing this problem. It might become the biggest problem if it is not dealt with immediately . Industrial Waste The term industrial waste is generally understood to refer specifically to the liquid waste produced as a result of some industrial operation, as distinct from an industry’s solid refuse or its gases, fumes and vapors. Like municipal sanitary sewage, most of such liquids must ultimately be disposed of into rivers or other water courses. The liquid wastes of a community, whether domestic sewage or industrial wastes, should receive appropriate treatment before discharge into streams in order to prevent gross pollution. The treatment methods for domestic sewage are based on a fundamental and growing body of knowledge. These methods, however, are not suitable for industrial wastes, which are quite varied in character. Frequently anew industrial process development will produce a waste that is not amenable to treatment by any of the conventional methods. For such wastes, laboratory investigations followed by pilot-plant studies must precede final design of treatment...
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...1 - 3 (P1,P2,P3)You are working in a health clinic and have been asked to produce a poster to explain the functions of the main cell, tissue and body components to display in the clinic. Task 4 (P4,M1,D1)You are an advisor in your local sports centre and you have been asked to design and produce an information booklet to explain to clients how the body requires and utilises energy. This should include:Produce a written report on the body’s response to exercise. The report will be based on primary and secondary research. The report will include:Task 5 (P5,M2,D2) 1. An explanation of the concept of homeostasis and its role in exercise and healthy functioning of the body. 2. Measurements collected from practical work involving physical activity and your interpretation of them together with comments on the validity of the data collected.Task 6 (P6)Complete exercise programme and complete data form and graphs sheets | The Brief | Task 1 (P1)Using a large piece of paper, produce an annotated poster of a cell as it is seen under the microscope. You must include the following; * Organelles – nucleus, cytoplasm, mitochondria, smooth and rough endoplasmic reticula * Golgi apparatus * LysosomesThe notes accompanying the labels should include the main activities carried out by the organelles. Cells: cell membrane, nucleus, cytoplasm; organelles – mitochondria, endoplasmic reticulum (smooth and rough), Golgi apparatus, lysosomeTask 2...
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...Urban Waste Management Solid wastes are those organic and inorganic waste materials produced by various activities of the society, which have lost their value to the first user. Improper disposal of solid wastes pollutes all the vital components of the living environment (i.e., air, land and water) at local and global levels. There has been a significant increase in MSW (municipal solid waste) generation in India in the last few decades. This is largely because of rapid population growth and economic development in the country. Due to rapid growth of urban population, as well as constraint in resources, the management of solid waste poses a difficult and complex problem for the society and its improper management gravely affects the public health and degrades environment. The population of Mumbai grew from around 8.2 million in 1981 to 12.3 million in 1991, registering a growth of around 49%. On the other hand, MSW generated in the city increased from 3200 ton per day to 5355 ton per day in the same period registering a growth of around 67% (CPCB 2000). This clearly indicates that the growth in MSW in our urban centers has outpaced the population growth in recent years. This trend can be ascribed to our changing lifestyles, food habits, and change in living standards. Waste referred as rubbish, trash, garbage, or junk is unwanted or unusable material. According to European councils’ directive “Waste is any substance or object which the holder discards or intends or is required...
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...I. OBJECTIVES The University of Pangasinan, College of Nursing aims to produce nurses who are competent in the care of people in participation with other care providers in the prevention of disease, promotion and maintenance of health, restoration of well being and alleviation of suffering. With these in mind, we form the following objectives. General objectives: * This case study is designed for student nurses like us to become practiced, well informed and mannered in delivering holistic care for patients diagnosed with tetanus, as well as to gain knowledge and overview about the disease. Specific objectives: * To imply appropriate nursing management for tetanus. * To be able to discuss the anatomy and physiology of the nervous system. * To be able to define tetanus and identify its clinical manifestations and risk factors. * To be acquainted with the different drugs for tetanus and their actions. * Plan for a suitable nursing care. * To know the purposes and specific nursing responsibilities before, during, and after some procedure done with the client. * To institute bond between the student nurse and the patient. II. INTRODUCTION Tetanus comes from the Greek word “teiteim” which means to stretch. It is also called lockjaw. It is a serious infectious disease of the nervous system in which toxin causes severe muscle spasm. It is a medical condition characterized by a prolonged contraction of skeletal muscle fibers...
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...MANAGEMENT NEW CAIRO PAPER MILL TOPIC NAME LECTURER: DR.TONY JEWELS SUBMISSION DATE: 16.10.2013 STUDENT NAME: KHALED IBRAHIM STUDENT ID: 867438 TABLE OF CONTENT Executive summary ……………………………………………………………………………..3 1.Introduction 4 1.1 mission and vision 4 1.2 Objective of the Study 5 2. Key process in operations 5 2.1 Procurement 5 2.2 Production 5 2.3 Distribution 7 2.4 The sales 7 3. Planning stages and control 7 3.1 Strategic 7 3.2 Tactical 8 3.3 Operative 9 4. Environmental, Health, and Safety for Pulp and Paper Mills 10 4.1 Environment 10 4.2 Occupational Health and Safety 12 4.3 Community Health 13 5. Conclusion 13 List of Figures Figure 1 9 Figure 2 15 Executive summary Paper is a sheet of fibers with a number of added chemicals that affect the properties and quality of the sheet. Besides fibers and chemicals, manufacturing of pulp and paper requires a large amount of process water and energy in the form of steam and electric power. Consequently, the main environmental issues associated with pulp and paper production are emissions to water, emissions to air, and energy consumption. Waste is a gradually increasing environmental issue of concern .Paper production typically involves the following steps: • Producing and acquiring fiber • Chemically or mechanically processing the fiber into pulp • Running the pulp through a paper machine to create large rolls of paper The papermaking...
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...Chapter 1 INTRODUCTION The world population is living, working, vacationing, increasingly mixing along the coasts, and standing on the front row of the greatest, most extraordinary, plastic waste tide ever faced. Washed out on the coasts in obvious and clearly visible form, the plastic pollution display obviously seen on the beaches is only the preface of the greater story that unfolded further away in the world’s oceans, yet mostly originating from where people stand: the land. In 2008, our global plastic consumption worldwide has been estimated at 260 million tons, and, according to a 2012 report by Global Industry Analysts, plastic consumption is to reach 297.5 million tons by 2015. Plastic is versatile, lightweight, flexible, moisture resistant, strong, and relatively inexpensive. Those are the attractive qualities that lead us, around the world, to such a voracious appetite and over-consumption of plastic goods. However, durable and very slow to degrade, plastic materials that are used in the production of so many products all, ultimately, become waste with staying power. Our tremendous attraction to plastic, coupled with an undeniable behavioral propensity of increasingly over-consuming, discarding, littering and thus polluting, has become a combination of lethal nature. Plastic bags are in use by consumers worldwide since the 1960’s, (Mc Kinley, 2010). These bags are sometimes called single-use bags, referring to carrying items from a store to a home. Open bags with...
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...Can the Bacteria in Your Gut Explain Your Mood? The rich array of microbiota in our intestines can tell us more than you might think. By PETER ANDREY SMITHJUNE 23, 2015 Eighteen vials were rocking back and forth on a squeaky mechanical device the shape of a butcher scale, and Mark Lyte was beside himself with excitement. ‘‘We actually got some fresh yesterday — freshly frozen,’’ Lyte said to a lab technician. Each vial contained a tiny nugget of monkey feces that were collected at the Harlow primate lab near Madison, Wis., the day before and shipped to Lyte’s lab on the Texas Tech University Health Sciences Center campus in Abilene, Tex. Lyte’s interest was not in the feces per se but in the hidden form of life they harbor. The digestive tube of a monkey, like that of all vertebrates, contains vast quantities of what biologists call gut microbiota. The genetic material of these trillions of microbes, as well as others living elsewhere in and on the body, is collectively known as the microbiome. Taken together, these bacteria can weigh as much as six pounds, and they make up a sort of organ whose functions have only begun to reveal themselves to science. Lyte has spent his career trying to prove that gut microbes communicate with the nervous system using some of the same neurochemicals that relay messages in the brain. Inside a closet-size room at his lab that afternoon, Lyte hunched over to inspect the vials, whose samples had been spun down in a centrifuge to a radiant...
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...mold etc.) b) Activities of natural food c) By Insects, parasites, and rodents d) Temperature (high or low) e) Dryness or Moisture content f) Air (mostly oxygen) g) Light h) Time (King, 2004) Furthermore, the major types of food deterioration are:- a) Microbiological spoilage. b) Enzymatic spoilage c) Chemical spoilage d) Fat oxidation e) Environmental spoilage EXAMPLES OF FOOD SPOILAGE AND FOOD PRODUCTS TABLE:- It shows various types of foods having spoilage under various conditions Food preservation involves the a) Use of heat b) Cold c) Drying (water activity) d) Acid (pH) e) Sugar f) Salt g) Smoke h) Chemicals i) Radiation j) Mechanical methods. (Frazier and Westhoff, 2009) Examples of food deterioration involves:- a) Microorganisms involved in food spoilage b) Common mould on bread c) Canned food spoilage FOOD SPOILAGE MICRO-ORGANISMS Spoilage is complex process and huge amount of food is lost due to microbial, chemical and other processes....
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...The Extraction of Bioethanol from Pineapple (Ananas comosus) Peelings Through Simultaneous Saccharification and Fermentation Using the Yeast Saccharomyces cerevisiae AN INVESTIGATORY PROJECT SUBMITTED AS AN ENTRY TO THE 16TH INTERNATIONAL ENVIRONMENTAL PROJECT OLYMPIAD (16TH INEPO) 16. INEPO ÇEVRE PROJE OLİMPİYADI FATİH KOLEJİ (FATIH COLLEGE) ISTANBUL, TURKEY 1-4 JUNE 2008 Avril Rodiel Bries Quezon City Science High School (Regional Science High School for NCR) REPUBLIC OF THE PHILIPPINES- CUMHURIYET FİLİPİNLER School Year 2007-2008 Mr. Noel Pablo Diaz Research Adviser Abstract: On average, 435,000 metric tons of pineapples are produced annually in the Philippines, which is one of the country’s leading commercial fruit products. However, there are a lot of unused excess parts of the pineapple, notably the peelings, which are considered as waste and contribute to the country’s garbage problem. There is a global oil crisis, as the demand for petroleum increases each year while our supplies are rapidly being depleted. Bioethanol, a principle biofuel, is a natural alternative to gasoline. One solution to both dilemmas is to produce bioethanol from pineapple plant peelings. This will be made possible by extracting the glucose content of the peelings and fermenting it through the process of Simultaneous Saccharification and Fermentation (SSF) using the yeast sample. Peel samples, coming...
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...Environmental assessment of bio-based polymers and natural fibres Dr. Martin Patel*), Dr. Catia Bastioli**), Dr. Luigi Marini**), Dipl.-Geoökol. Eduard Würdinger***) *) Utrecht University, Department of Science, Technology and Society (STS), Copernicus Institute, Padualaan 14, NL-3584 CH Utrecht, Netherlands; Phone: +31 30 253 7634; Fax: +31 30 253 7601; E-mail: m.patel@chem.uu.nl **) Novamont, Via Fauser 8, I-28100 Novara, Italy; Phone: +39 0321 699 611; Fax: +39 0321 699 600; E-mail: bastioli@materbi.com, marini@materbi.com ***) BIFA (Bavarian Institute of Applied Environmental Research and Technology), Am Mittleren Moos 46, D-86167 Augsburg, Germany; Phone: +49 821 7000-181; Fax: +49 821 7000-100; Email: ewuerdinger@bifa.de Table of Contents 1. INTRODUCTION 2. HISTORICAL OUTLINE 3. METHODOLOGY OF LCA 4. PRESENTATION OF COMPARATIVE DATA 4.1 STARCH POLYMERS 4.1.1 Starch polymer pellets 4.1.2 Starch polymer loose fills 4.1.3 Starch polymer films and bags 4.1.4 Starch nanoparticles as fillers in tyres 4.2 POLYHYDROXYALKANOATES (PHA) 4.3 POLYLACTIDES (PLA) 4.4 OTHER POLYMERS BASED ON RENEWABLE RESOURCES 4.5 NATURAL FIBRES 5. SUMMARISING COMPARISON 6. DISCUSSION 7. CONCLUSIONS 7.1 7.2 SUMMARY AND FURTHER ELABORATION OF FINDINGS OUTLOOK AND PERSPECTIVES 8. ACKNOWLEDGEMENTS 1 9. REFERENCES ANNEX 1: OVERVIEW OF ENVIRONMENTAL LIFE CYCLE COMPARISONS FOR BIODEGRADABLE POLYMERS INCLUDED IN THIS REVIEW ANNEX 2:...
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...INTERMEDIATE VOCATIONAL COURSE Second Year NON-CONVENTIONAL ENERGY SOURCES For the Course of Rural Engineering Technician State Institute of Vocational Education Directorate of Intermediate Education Govt. of Andhra Pradesh, Hyderabad. 2005 Author Sri Shali Habibulla M.Tech (Ref & A/c), Hons. C.H.E. M.I.S.T.E. Department of Rural Engineering Technician Govt. Junior College (Boys) New, Town, ANANTAPUR - 515 001. Editor Sri K. Jagadish Junior Lecturer in R.E.T. Govt. Junior College Vmedugula - 531027. Vizag (Dist.) PREFACE The main objective of vocational education is to train the students at +2 level for meeting the demands for the skilled manpower in both organised and unorganised sectors and also to provide an alternative channel for those who aimlessly persue higher education and to prepare them for self reliance. The State Institute of Vocational Education (SIVE) in collaboration with the Board of Intermediate Education, Andhra Pradesh has developed curriculum for 43 vocational courses in the field of Engineering & Technology Agriculture Health & Paramedical Business & Commerce Home Science and Humanities Accordingly the text books have been developed by SIVE as per the restructured curriculum by utilizing the services of various professional teachers in the respective fields. I am sure that this book will be immensely useful to the vocational students and teachers in understanding the concepts. I wish to place my sincere thanks on record...
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...CARIBBEAN EXAMINATIONS COUNCIL Caribbean Secondary Education Certificate CSEC AGRICULTURAL SCIENCE SYLLABUS Effective for examinations from May/June 2008 CXC 07/G/SYLL 06 Published by the Caribbean Examinations Council © 2010, Caribbean Examinations Council All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, or by any means electronic, photocopying, recording or otherwise without prior permission of the author or publisher. Correspondence related to the syllabus should be addressed to: The Pro-Registrar Caribbean Examinations Council Caenwood Centre 37 Arnold Road, Kingston 5, Jamaica, W.I. Telephone: (876) 630-5200 Facsimile Number: (876) 967-4972 E-mail address: cxcwzo@cxc.org Website: www.cxc.org Copyright © 2006, by Caribbean Examinations Council The Garrison, St Michael BB11158, Barbados CXC 07/G/SYLL 06 Content RATIONALE ........................................................................................................................................... 1 AIMS ........................................................................................................................................................ 1 CAREER CHOICES ............................................................................................................................... 2 SUGGESTED RESOURCES ...............................................................................................
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...Electricity Generation by Hybrid Biomass Power Plant From Waste For Bangladesh Md. Rakibul Islam Monshy Department of Electric Engineering & Computer Science North South University, Dhaka Abstract- Hybrid renewable Biomass Power is becoming popular for remote area power generation applications due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. A hybrid energy system usually consists of two or more renewable energy sources used together to provide increased system efficiency as well as greater balance in energy supply. Hybrid renewable energy systems is one of the most promising applications of renewable energy technologies in remote areas, where the cost of grid extension is prohibitive and the price of fossil fuels increase drastically with the remoteness of the location. It has been demonstrated that hybrid energy systems can significantly reduce the total life-cycle cost of stand-alone power supplies in many situations, while at the same time providing a more reliable supply of electricity through the combination of energy sources. Applications of hybrid systems range from small power supplies for remote households providing electricity for lighting or water pumping and water supply to village electrification for remote communities. Mixed combinations of renewable energy systems are also possible, that is applications where different renewable energy technologies are applied in one location without the systems being...
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