Currently, colour removal dye degradation from synthetic wastewater of RB21 dye using photocatalysis with numerous spinel catalysts created in different methods. The reactive turquoise blue (RB21) dye, which belongs to the phthalocyanine group and has a strong azo link and a Cu2+ metal complex, is a very stable molecule that is difficult to degrade. Textile, paper, and leather sectors all employ reactive dyes. Spinel ferrites are oxides with the general formula AB2O4, where A and B are rare earth, alkali metal, and transition metal cations. Researchers have used spinel catalysts in photocatalytic degradation technology to combat wastewater pollution caused by dyes. The present research is focused on the creation of Magnesium and Cobalt ferrites spinel catalysts for the breakdown of RB21 dye. The most efficient photocatalyst was chosen, and the catalyst dosage, pH, dye concentration, reactor temperature, irradiation time, and other parameters were optimized. In the present work spinel catalysts (CoFe2O4, MgFe2O4, Mg0.5Co0.5Fe2O4, and Ni0.5Co0.5Fe2O4) were prepared by different methods. The operating conditions for spinel synthesis were observed at 146˚C commencing combustion of spinel ferrites. The experiments were performed under varying light sources like a 700W microwave system, and a Visible-Light photocatalytic reactor. The photocatalytic activity was carried out using a light source (two 9W LED bulbs, Halonix) and stirring the sample (400 rpm, 25°C).
With the public enhanced awareness towards eco-preservation, eco-safety and health concerns, environmentally benign, nontoxic and sustainable bioresource materials produced mainly from non-food crops have revolutionized all industrial sectors particularly textile industry. In recent years, textile industries in developed countries are getting increasing interest in global interest due to the varied and changing world market conditions in terms of price, durability and fiber mixtures as well as design, colors, weight, ease of handling and product safety. The increasing environmental and health concerns owing to the use of large quantities of water and hazardous chemicals in conventional textile finishing processes lead to the design and development of new dyeing strategies and technologies. Effluents produced from these textiles wet processing industries are very diverse in chemical composition, ranging from inorganic finishing agents, surfactants, chlorine compounds, salts, total phosphate to polymers and organic products. This aspect forced western countries to exploit their high technical skills in the advancements of textile materials for high quality technical performances, and development of cleaner production technologies for cost effective and value-added textile materials. Therefore, vast and effective research investigations have been undertaken all over the world to minimize the negative environmental impact of synthetic chemical agents through the sustainable harvest of eco-friendly bioresource materials. The book will discuss following research developments in academic and industry: Improvement in dye extraction and its applications Impact of textile dyeing on environment Textile finishing by natural and ecofriendly means Natural dyes as environmental-friendly bioresource products Textile effluent remediation via physical, chemical and biological processes.
"In this volume, through case studies of forest conflicts and water conflicts in India, the authors have exposed the grim situation in a forceful and logical manner. Its logic does not remain confined to the Indian boundaries alone but extends to all over the world in general. . . . Dr. Vandana Shiva and her colleagues deserve profound admiration for their excellent work. It is a prize book, worthwhile to read and possess." --Indian Book Chronicle "Relatively little has been written on India's ecological problems as they relate to political struggles: Shiva's stands apart as an essential treatise on the subject." --The Bookwatch "The authors are some of the well-known experts in the field. . . . The book is worth reading, as it provides a comprehensive and in-depth current discussion on the issues of water and forest in India." --Development Update Due to thoughtless acts, our environment has endured harsh treatment, and in many cases, irreversible damage. Only now are we beginning to see some of the damage we have caused. Sponsored by the United Nation University's Programme on Peace and Global Transformation, this insightful volume analyzes ecology movements in contemporary society and the resulting conflicts over vital natural resources. The discussed theme relates to societies universally, and specifically addresses the intense and emerging social contradictions related to conflicts over natural resources rapidly surfacing in India. Looked at from a direct Third World perspective, rather than speculated by an outside perspective, the book examines how ecology movements have questioned the validity of dominant concepts of economic development in the world today. Shiva discusses the fundamental assumptions of modern economic development responsible for the conflicts and environmental degradation, and proposes a new development theory which supports sustainable development and the people's rights to justice and peace. Ecology and Politics of Survival will interest students and professors alike in ecology, environmental studies, development studies, sociology, and social studies of science. "This work provides insights into the interlinkages between natural resource utilization and developmental priorities in India. . . . The book is an excellent contribution as it supports ecologists' sentiments with scientific data. It provides an insight into the unseen dimension of development programs." --Productivity "The author provides systematic conceptual framework for analyzing the processes and structures of modern economic development from an ecological perspective." --Finance India "The book under review by an author, who is both a scholar and an activist herself, is an eloquent expression of the ecological critique. The book, written in association with seven others, including the late B. V. Krishnamurthy, offers a well-articulated theoretical critique as well as a documentation of the conflicts over natural resources that took place in India in the seventies and the eighties." --Indian Journal of Agricultural Economics "Indian writers about ecology and development, and Vandana Shiva in particular, are beginning to achieve the international attention they deserve. . . . It is a pioneering work because it provides an accessible set of explanations against which other case studies can be established and tested. . . . This powerful text by Shiva and colleagues . . . can help realize a change in training and thinking which we are all waiting for." --Pacific Affairs
'This book ... should be issued to grass-root organisations everywhere' Doris Lessing, The New Scientist 'It is must reading for government planners, environmentalists and the ordinary layman' Asia Week Women in the Third World play the major role in managing natural resources. They are also the first and hardest hit by environmental mismanagement, yet they are neither consulted nor taken into account by development strategists. lrene Dankelman and Joan Davidson provide a clear account of the problems faced by women in the management of land, water, forests, energy and human settlements. They also describe the lack of response from international organizations. With the help of well-documented case studies they describe the ways in which women can organize to meet environmental, social and economic challenges. Originally published in 1988
Updated with nearly forty new selections to reflect the tremendous growth and transformation of scholarly, theological, and activist religious environmentalism, the second edition of This Sacred Earth is an unparalleled resource for the study of religion's complex relationship to the environment.
What became of the Gandhian tradition in India following the death of Mahatma Gandhi? Did it quietly die away? Or were there still Indians who believed in his philosophy and methods, committed to continuing his work? These were the questions that sent independent journalist Mark Shepard to India in 1978–79. There he found that the tradition begun by Gandhi was very much alive, in such individuals, groups, and movements as: -- An acclaimed saint who collected over four million acres in gifts of land for the poor. -- A leader of a nationwide protest movement that helped topple India's ruling party in the mid-1970s. -- A Peace Army that fought riots with nonviolence. -- A "Hug the Trees!" movement that physically blocked excessive logging in the Himalayas. -- A People's Court that even tried cases of murder and government corruption. -- A development center helping 400 villages rise from poverty. -- A nationwide movement of villages in which all land was held in common and decisions were made by unanimous consent. Learn about all these and more in this engaging report on the legacy of the twentieth century's greatest peacemaker and revolutionary. ///////////////////////////////////////////////// Mark Shepard is the author of "Mahatma Gandhi and His Myths," "The Community of the Ark," and "Gandhi Today," called by the American Library Association's Booklist "a masterpiece of committed reporting." His writings on social alternatives have appeared in over 30 publications in the United States, Canada, England, Norway, Germany, the Netherlands, Switzerland, Japan, and India. ///////////////////////////////////////////////// "A masterpiece of committed reporting. . . . History that needs to be better known, told in clear, compelling, common language." -- American Library Association Booklist, Feb. 1, 1987 (starred review) "Shepard has done a marvelous job describing individuals and groups keeping the spirit of Gandhi alive in India and throughout the world. His book presents living proof the ideals of the Mahatma will never die." -- Cesar Chavez, founder and President, United Farm Workers of America "This lively book fills a critical gap in our understanding of Gandhi's way. . . . A source of hope and inspiration." -- Joanna Macy, author/activist "A remarkable job of introducing the contemporary Gandhian movement -- readable, honest, challenging." -- Jim Forest, General Secretary, International Fellowship of Reconciliation "A fascinating study. . . . As useful as it is encouraging." -- Michael Nagler, founder, Peace and Conflict Studies Program, University of California at Berkeley, and author, America Without Violence "A fast-moving account of a living tradition. . . . Full of good ideas for peacemakers." -- Virginia Baron, Editor, Fellowship "The author is a committed partisan of Gandhian thought and methods, but he is also a reporter who makes a case that Gandhi is an important figure who keeps on marching. . . . Among [the successful experiments he visited] are some remarkable ones." -- United Press International (UPI), Jan. 18, 1988 "Highly recommended. . . . Will provide encouragement and inspiration to those working for a better world." -- Peace Magazine (Canada), Dec. 1987-Jan. 1988 "Finally there is a small, readable book on the Gandhian legacy. . . . Encouraging and positive." -- Thomas Weber, Legal Studies, La Trobe University (Australia) "May prove to be the most important book of 1987." -- Green Letter, Spring 1987
This text presents a critical survey of the burgeoning field of political ecology, an interdisciplinary area of research which connects politics and economy to problems of environmental control and ecological change. Provides the first full history of the development of political ecology over the last century. Considers the major challenges facing the field now and for the future. Written to be accessible to students at all levels and from different disciplines. Uses case examples to explore abstract, theoretical issues in a down-to-earth way. Features study boxes, introducing key figures in the development of the discipline and summarizing their key works. Details of the author’s own research experiences to offer a personal glimpse into political ecology research.
