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Coagulation Floculation Des Eaux Issues Des Mines De Fer Comparaison Entre Les Coagulants Mineraux Et Un Coagulant Organique Issu De La Moringa Oleifera
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Book Synopsis Coagulation-floculation des eaux issues des mines de fer : comparaison entre les coagulants minéraux et un coagulant organique issu de la moringa oléifera by : Claudia Dumans Guedes
Download or read book Coagulation-floculation des eaux issues des mines de fer : comparaison entre les coagulants minéraux et un coagulant organique issu de la moringa oléifera written by Claudia Dumans Guedes and published by . This book was released on 2004 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Quadrilátero Ferrífero area, Minas Gerais, Brazil, contains some of the largest global iron mineral deposits. There it is located Rio Doce Hydrographic Basin and the sub-Basin of Rio Piracicaba (Piracicaba River), a tributary of Rio Doce. The area around the high and medium course of Piracicaba River concentrates an important number of mining companies. Iron ore mining activities are considered one of the main agents responsible for raising chemical and mechanical soil leaching rates. In this work, the iron oxide content of the bottom sediment of the river was investigated in order to try to correlate the sediment accumulation and the mining activities of the region. The samples collected closest to the springs of Piracicaba river showed the higher contents of iron minerals, probably carried by the tributaries which drain the mining areas. At these stations, hematite concentration values are about four times higher than the average value for the river. Considering this, studying coagulation of iron oxide rich superficial waters from mining areas is imperative to those concerned with the environmental and hydrological equilibria of the river. We tried to do this by using two different coagulants, the traditional aluminum sulphate (alumen) and a natural biopolymer named Moringa oleífera. The superficial waters consist essentially of a suspension of goethite, hematite, kaolinite and quartz, which shows a positive net superficial charge under environmental pH conditions. Alumen showed a good performance in the destabilization of those iron oxide rich particle suspensions. Its coagulation/flocculation mechanism was investigated. Specific adsorption of hydrolysis products of aluminum salts on iron oxide particles followed by an heterocoagulation process involving differently charged substrates have been proposed to explain the turbidity reduction of the suspensions. However, since the seventies, aluminum is under suspicion of being responsible for neurovegetative diseases as Alzheimer, Parkinson's disturb and cancer. Moringa oleífera is a natural coagulant from a tree, well adapted to North and Northeastern Brazilian climate, whose seeds are largely employed in poor countries of Africa as an efficient coagulant for turbid waters. No test with Moringa in oxide rich waters has been reported so far. Its coagulation efficiency with iron oxide suspensions was similar to that of alumen. The mechanism of coagulation/flocculation of the aqueous extract of the seeds has been investigated through adsorption isotherms, infrared spectroscopy, X-Rays diffraction, Mössbauer spectroscopy, thermal gravimetric analysis, Zeta potential measurements and laser granulometric analysis. The active coagulant fraction of Moringa oleífera seeds are cationic proteins that adsorb on the oxide surface probably by a two step mechanism: establishment of a polypeptide monolayer followed by formation of multilayers that redisperse the destabilized particles.
Book Synopsis African Indigenous Vegetables by : R. R. Schippers
Download or read book African Indigenous Vegetables written by R. R. Schippers and published by . This book was released on 2000 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Intelligent Systems for Sustainable Development (AI2SD’2020) by : Janusz Kacprzyk
Download or read book Advanced Intelligent Systems for Sustainable Development (AI2SD’2020) written by Janusz Kacprzyk and published by Springer Nature. This book was released on 2022-02-10 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book publishes the best papers accepted and presented at the 3rd edition of the International Conference on Advanced Intelligent Systems for Sustainable Development Applied to Agriculture, Energy, Health, Environment, Industry, Education, Economy, and Security (AI2SD’2020). This conference is one of the biggest amalgamations of eminent researchers, students, and delegates from both academia and industry where the collaborators have an interactive access to emerging technology and approaches globally. In this book, readers find the latest ideas addressing technological issues relevant to all areas of the social and human sciences for sustainable development. Due to the nature of the conference with its focus on innovative ideas and developments, the book provides the ideal scientific and brings together very high-quality chapters written by eminent researchers from different disciplines, to discover the most recent developments in scientific research.
Book Synopsis Advanced Intelligent Systems for Sustainable Development (AI2SD’2018) by : Mostafa Ezziyyani
Download or read book Advanced Intelligent Systems for Sustainable Development (AI2SD’2018) written by Mostafa Ezziyyani and published by Springer. This book was released on 2019-02-13 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers papers presented at the International Conference on Advanced Intelligent Systems for Sustainable Development (AI2SD-2018), which was held in Tangiers, Morocco on 12–14 July 2018. It highlights how advanced intelligent systems have successfully been used to develop tools and techniques for modeling, prediction and decision support in connection with the environment. Though chiefly intended for researchers and practitioners in advanced intelligent systems for sustainable development, the book will also be of interest to those working in environment and the Internet of Things, environment and big data analysis, summarization, prediction, remote sensing & geo-information, geophysics, marine and coastal environments, and sensor networks for environment services.
Book Synopsis Indigenous Vegetables in Tanzania by : Katinka Weinberger
Download or read book Indigenous Vegetables in Tanzania written by Katinka Weinberger and published by AVRDC-WorldVegetableCenter. This book was released on 2004 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction; Purpose and approach; Nutritional analysis; Consumers perspective; Production aspects; Seed sector; Collections of indigenous vegetable germplasm; Conclusion; Bibliography; Annex; List of tables.
Book Synopsis Advances in Cowpea Research by : B. B. Singh
Download or read book Advances in Cowpea Research written by B. B. Singh and published by IITA. This book was released on 1997 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cowpea: taxonomy, genetics, and breeding, physiology and agronomy, diseases and parasitic weeds, insect pests, postharvest technology and utilization. Biotechnological applications.
Book Synopsis Traditional Food Plants of Kenya by : Patrick M. Maundu
Download or read book Traditional Food Plants of Kenya written by Patrick M. Maundu and published by Kenya Resource Centre for Indige Ums of Kenya. This book was released on 1999 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers descriptions of 175 main and some 60 minor species with information on food, medicinal and other uses, distribution in Kenya and the rest of the world, ecology, commercial use, potential for domestication and status of the species in the wild. Over 500 figs, 3250 local plant names with scientific equivalents, a food composition table, glossary of botanical terms, maps showing the distribution within Kenya, administrative divisions, ethnic communities and agro -ecological zones.
Book Synopsis Plant Resources of Tropical Africa (PROTA) by : Dominique Louppe
Download or read book Plant Resources of Tropical Africa (PROTA) written by Dominique Louppe and published by PROTA. This book was released on 2008 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis African Indigenous Vegetables in Kenya by : Mary Oyiela Onyango Abukutsa
Download or read book African Indigenous Vegetables in Kenya written by Mary Oyiela Onyango Abukutsa and published by . This book was released on 2010 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neohellenism written by John Burke and published by . This book was released on 1992 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Johnsoniana.. written by James Boswell and published by . This book was released on 1820 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Economic Policies for Sustainable Development by : Thomas Sterner
Download or read book Economic Policies for Sustainable Development written by Thomas Sterner and published by Springer Science & Business Media. This book was released on 1994-01-31 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on describing policy instruments in different countries. Its purpose is not only descriptive but also, to some extent, advocatory. We believe that economic instruments can make an important contribution to an environmentally less disruptive path of development. The design of economic instruments is however a fine art and depends among other things on their political acceptability and this acceptability is of course influenced by experience. It is therefore important to provide information on the use of policy instruments in other countries. Policies are currently developing quite fast and thus a book such as this one can inevitably not capture more than a "snapshot" view at a single moment of time. We would hope that the book encourages more experimentation with economic instruments and that countries will make a fuller use of the whole arsenal of economic policy instruments. If the book does succeed in this sense then it will soon become dated as policies change -but that would be a price well worth paying! The book combines a dozen country monographs together with a few international surveys on particular topics (gasoline pricing, vehicle regulations, acid rain, deforestation and global warming). These papers are intended to illustrate the diversity of policy options available. The actual policies adopted depend on economic as well as ecological conditions. The country studies cover two "Western" countries and then concentrate on formerly planned and developing countries. They show that economic instruments are still generally thought of as new and innovative.
Book Synopsis Technologies for Value Addition in Food Products and Processes by : Sankar Chandra Deka
Download or read book Technologies for Value Addition in Food Products and Processes written by Sankar Chandra Deka and published by CRC Press. This book was released on 2019-10-28 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new volume looks at some important emerging food processing technologies in light of the demand for functional food products and high-value and nutritionally rich products. Technologies for Value Addition in Food Products and Processes covers a selection of important recent developments in food processing that work to enrich or maintain nutritional value of food products, including such applications as non-thermal plasma, refractance window drying, extrusion, enzyme immobilization, and dry fractionation. Dry fractionation, in particular, has emerged as a sustainable alternative to wet processes in last three decades for producing protein concentrates from legumes. Several chapters on fish processing cover both traditional knowledge and advances in fish processing technologies. A chapter on bioethanol production discusses the past and present status of the industry, focusing on economic feasibility and environmental viability. A chapter also discusses traditional fermentation process and nutritional aspects of ethnic foods followed by the Rabha-Hasong, Mishing and Karbi communities of Assam, India. With the contribution from experts in their respective fields, this volume provides new information on novel food processing technologies.
Book Synopsis Environmental Nutrition by : Joan Sabate
Download or read book Environmental Nutrition written by Joan Sabate and published by Academic Press. This book was released on 2019-04-15 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Nutrition: Connecting Health and Nutrition with Environmentally Sustainable Diets explores the connection between diet, environmental sustainability and human health. Current food systems are a major contributor to our most pressing health and environmental issues, including climate change, water scarcity, food insecurity and chronic diseases. This book not only seeks to increase our understanding of the interrelatedness of these major global issues, but also aids in the creation of new solutions. Sections discuss the diet, the health and environment trilemma, food systems and their trends, environmental nutrition as an all-encompassing discipline, and the environmental nutrition model. Demonstrates how the food system, the environment and human health are inter-related Explores how dietary patterns impact food production and agriculture choices Identifies the imbalance between current food production relative to demand Addresses how the current food system negatively impacts the environment Provides practical solutions to how diets can be both healthy and sustainable
Book Synopsis Sustainable Bioeconomy by : V. Venkatramanan
Download or read book Sustainable Bioeconomy written by V. Venkatramanan and published by Springer Nature. This book was released on 2020-11-06 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable development is the most important challenge facing humanity in the 21st century. The global economic growth in the recent past has indeed exhibited marked progress in many countries. Nevertheless, the issues of income disparity, poverty, gender gaps, and malnutrition are not uncommon in the global landscape, in spite of the upward growth of the economy and technological advances. This grim picture is further exacerbated by our growing human population, unmindful resource use, ever-increasing consumption trends, and changing climate. In order to protect humanity and preserve the planet, the United Nations issued the “2030 agenda for sustainable development,” which includes but is not limited to sustainable production and consumption practices, e.g. in a sustainable bioeconomy. The hallmark of the sustainable bioeconomy is a paradigm shift from a fossil-fuel-based economy to a biological-based one, which is driven by the virtues of sustainability, efficient utilization of resources, and “circular economy.” As the sustainable bioeconomy is based on the efficient utilization of biological resources and societal transformations, it holds the immense potential to achieve the UN’s Sustainable Development Goals. This book shares valuable insights into the linkages between the sustainable bioeconomy and Sustainable Development Goals, making it an essential read for policymakers, researchers and students of environmental studies.
