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Author : Robert Warder
Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (437 download)
Download or read book Removal of Arsenic from Water by Iron Oxide Coated Sand and Activated Alumina written by Robert Warder and published by . This book was released on 1999 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Feroze Ahmed
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.3/5 (91 download)
Download or read book Technologies for Arsenic Removal from Drinking Water written by M. Feroze Ahmed and published by . This book was released on 2001 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes some papers with reference to Bangladesh and India.
Author : Gary L. Amy
Publisher : American Water Works Association
ISBN 13 : 1583213996
Total Pages : 164 pages
Book Rating : 4.5/5 (832 download)
Download or read book Adsorbent Treatment Technologies for Arsenic Removal written by Gary L. Amy and published by American Water Works Association. This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM includes Excel document "Arsenic adsorbent design and costing tool".
Author :
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (921 download)
Download or read book Arsenic Removal from Contaminated Water Over Iron Oxide Impregnated on Activated Alumina written by and published by . This book was released on 2011 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Activated alumina (AA) and Iron oxide impregnated on activated alumina (FeAA) by wet impregnation method were investigated in arsenate (As (V)) removal from synthetic water. Box-Behnken Design was utilized to reveal the optimization of FeAA performance to adsorb the toxic pollutant. The result from the pre-test indicated that FeAA provided better percent removal than AA for both arsenite (As (III)) and arsenate (As (V)). Therefore, merely FeAA was further experimented under various conditions obtained from Box-Benhken design. There were 30 analytical sets of FeAA in total conducted in batch tests based on three independent variable that are pH (3, 6 and 9), % Fe loading per alumina (2, 4 and 6%), and initial As (V) concentration (100, 300 and 500 μg/L). The dependent variable was percentage of As (V) removal. The calculation result from Box-Benhken design at 15th minute revealed that the optimal condition was pH of 3, %Fe loading per alumina weight of 2.57 and As (V) initial concentration of 100 μg/L provided the highest percentage removal of 77.64. At neutral pH which is the pH of groundwater, %Fe loading per alumina weight of 4.53 and As (V) initial concentration of 100 μg/L provided the optimal condition with a percentage removal of 62.50, at 15th minute.
Author : Dennis A. Clifford
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.3/5 (121 download)
Download or read book Arsenic (III) and Arsenic (V) Removal from Drinking Water in San Ysidro, New Mexico written by Dennis A. Clifford and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sirshendu De
Publisher : The Energy and Resources Institute (TERI)
ISBN 13 : 8179933830
Total Pages : 306 pages
Book Rating : 4.1/5 (799 download)
Download or read book Arsenic Removal from Contaminated Groundwater written by Sirshendu De and published by The Energy and Resources Institute (TERI). This book was released on 2012-01-01 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contamination of groundwater with arsenic is being considered a pervasive and critical issue in recent years. Large areas in India, Bangladesh, South East Asia, and other parts of the world are suffering from this problem. Arsenic Removal from Contaminated Groundwater presents a comprehensive discussion on various important issues, including state-of-the-art arsenic removal technologies, preparation and performance analysis of laterite, and scale-up issues and design of a household filter. It also expounds the potentiality of raw laterite and treated laterite as low-cost arsenic adsorbents. The efficiency of adsorbent capacity is evaluated using real arsenic contaminated groundwater collected from an affected area in West Bengal, India. The topic is an emerging area and most of the work presented has the potential of field application.
Author : Hongxu Yu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (689 download)
Download or read book In Situ Groundwater Arsenic Removal Using Iron Oxide-coated Sand written by Hongxu Yu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In many regions of the world, groundwater is contaminated with a high level of arsenic that must be treated before it can be safely used as drinking water. In situ immobilization of arsenic from groundwater within subsurface environment could have major advantages over the conventional above-ground chemical coagulation-precipitation treatment process. In this study, we develop a novel technique that can in situ emplace iron oxides onto the sand grain surface of porous media under mild chemical and temperature conditions. The technique involves sequential injections of a preconditioned ferrous iron solution and an oxidant solution and then orchestrate the advective-diffusive transport of the two reagents in porous media to create an overlapped reaction zone where ferrous iron is oxidized and precipitated on the sand grain surfaces. We demonstrate through bench-scale column tests the feasibility of using this technique to create a large-scale iron oxide-enriched reactive barrier in subsurface environment for in situ removal of arsenic. A sand filter with a fresh iron oxide coating can treat thousands of pore volumes of water contaminated with dozens of ppb arsenic before the coating needs to be regenerated. Arsenic breakthrough curves through the sand filter suggest that both reversible adsorption and irreversible precipitation are responsible for removing arsenic from the water. Unlike conventional excavate-and-fill permeable reactive barriers, the treatment capacity of our in situ created barrier can be in situ regenerated and replenished with a fresh coating.
Author : Phyllis Frank
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.3/5 (91 download)
Download or read book Arsenic (III) Oxidation and Removal from Drinking Water written by Phyllis Frank and published by . This book was released on 1986 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : DIANE Publishing
ISBN 13 : 1428901515
Total Pages : 147 pages
Book Rating : 4.4/5 (289 download)
Download or read book Arsenic removal from drinking water by ion exchange and activated alumina plants written by and published by DIANE Publishing. This book was released on with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zaid K. Chowdhury
Publisher : American Water Works Association
ISBN 13 : 1583212361
Total Pages : 404 pages
Book Rating : 4.5/5 (832 download)
Download or read book Implementation of Arsenic Treatment Systems: Process selection written by Zaid K. Chowdhury and published by American Water Works Association. This book was released on 2002 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harry T. Stewart
Publisher :
ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.3/5 (121 download)
Download or read book Evaluation of Arsenic Removal by Activated Alumina Filtration at a Small Community Public Water Supply written by Harry T. Stewart and published by . This book was released on 1989 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yu-Jung Chang
Publisher : American Water Works Association
ISBN 13 : 1583214062
Total Pages : 252 pages
Book Rating : 4.5/5 (832 download)
Download or read book Demonstration of Emerging Technologies for Arsenic Removal: Pilot testing written by Yu-Jung Chang and published by American Water Works Association. This book was released on 2005 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second of two volumes that presents the results of a cooperative research effort between industry, academia, utilities to evaluate and demonstrate the treatment effectiveness of a wide range of technologies for arsenic removal. (Volume 1; ISBN: 1-58321-310-4; published Feb 2004) This volume focused on larger-scale in-situ demonstration testing of the major technologies reviewed in Volume 1, plus several additional technologies. Objectives were to describe the underlying chemical and physical controls over arsenic removal, consider the operational performance parameters and anticipate where improvements might occur. Sponsored by Arsenic Research Partnership, AWWRF, USEPA, and ACWA.
Author : Bryan Black
Publisher : American Water Works Association
ISBN 13 : 158321058X
Total Pages : 90 pages
Book Rating : 4.5/5 (832 download)
Download or read book Arsenic written by Bryan Black and published by American Water Works Association. This book was released on 1999 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recently lowered arsenic maximum contaminant level (MCL) presents new challenges in the monitoring and treatment capabilities of drinking water utilities. This report provides advice to utilities and consultants as they monitor, make treatment modifications to control arsenic, and explain arsenic issues to the public. It overviews research on arsenic in drinking water with respect to health issues, occurrence, monitoring and treatment, and reviews the major treatment processescoagulation, lime softening, iron-manganese removal, ion exchange, activated alumina, reverse osmosis, nanofiltration, and augmented micro- or ultrafiltration. No index. Member price, $85. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Author : Nalan Kabay
Publisher : CRC Press
ISBN 13 : 0203843398
Total Pages : 270 pages
Book Rating : 4.2/5 (38 download)
Download or read book The Global Arsenic Problem written by Nalan Kabay and published by CRC Press. This book was released on 2010-04-26 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: A prevalent and increasingly important issue, arsenic removal continues to be one of the most important areas of water treatment. Conventional treatment plants may employ several methods for removing arsenic from water. Commonly used processes include oxidation, sedimentation, coagulation and filtration, lime treatment, adsorption onto sorptiv
Author :
Publisher : DIANE Publishing
ISBN 13 : 1422330028
Total Pages : 164 pages
Book Rating : 4.4/5 (223 download)
Download or read book Removal of Arsenic in Drinking Water written by and published by DIANE Publishing. This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marek Bryjak
Publisher : CRC Press
ISBN 13 : 1315682605
Total Pages : 488 pages
Book Rating : 4.3/5 (156 download)
Download or read book Innovative Materials and Methods for Water Treatment written by Marek Bryjak and published by CRC Press. This book was released on 2016-02-17 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to increasing demand for potable and irrigation water, water suppliers have to use alternative resources. They either have to regenerate wastewater or deal with contaminated surface water. This book brings together the experiences of various experts in preparing of innovative materials that are selective for arsenic and chromium removal, and in
Author : Dr. Ashok Kumar Jha
Publisher : Booksclinic Publishing
ISBN 13 : 9390655471
Total Pages : 142 pages
Book Rating : 4.3/5 (96 download)
Download or read book ARSENIC PROBLEM AND MITIGATION written by Dr. Ashok Kumar Jha and published by Booksclinic Publishing. This book was released on 2021-01-12 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The present book on Arsenic has painted a small portion of the vast canvas of water pollution by focusing on the specified areas of the Gangetic plain. In India, the firstcase of arsenic contamination came to light in 1980 in West Bengal. Subsequently many chemists and biologists started examining arsenic content in water in various parts of Bihar and my team started work in some new areas of Gangetic plain in Bhagalpur district. Switching to groundwater for potable water resulted in decrease of bacterial contamination on one hand and on the other this resulted in the vast population being affected by arsenic contaminated water. This book deals with some safer techniques of arsenic removal. The arsenic removal technologies are based on solar oxidation, coagulation, sedimentation, filtration, adsorption, ion exchange and biological processes. In coagulation micro-filtration Fe(III) and Al(III) salts are added to form arsenic-sorbing flocs which is removed by membrane filtration. This method increases Fe(III) and Al(III) in water. Adsorbents like activated alumina, ferric hydroxides, iron oxide coated sand and activated carbon have been used in columns to remove arsenic from aqueous medium. Thus many methods of arsenic removal have been discussed. The search for low-cost technologies has directed towards bentonite deposits of Rajmahal hills. Bentonite minerals are smectite group of mineral having 2:1 dioctahedral structure. Though these minerals are abundant inmost of the countries of the world, Rajmahal hill bentonites have not been studied for many of its important properties as yet. Our research team have collected bentonite minerals from different parts of the hill and worked on removal of heavy metals, dyes and arsenic from aqueous medium. Efforts have been made to use different derivatives of bentonite minerals for remediation of heavy metals including arsenic. A comparative study of remediation potential has been done. All the useful experimental data have been incorporated in the book to have a clear understanding of the subject. Apart from this, the ability of agricultural solid wastes e.g maize stem powder, rice husk have also been tested for removal of arsenic inaqueous medium. In addition, researches have focused on the ability of biological materials to accumulate the toxicants. The major advantages of biosorption are low-cost, high efficiency and minimum use of chemicals. Latest techniques of analyses of arsenic both qualitative and quantitative have been discussed in the book. Analysis of arsenic has also been done by I.C.P and A.A.S. Possible causes of arsenic contamination in ground water, geochemistry and mechanism of entry in the Gangetic plain have also been discussed to make readers understand in the simplest manner. General chemistry of arsenic and its compounds have been discussed in chapter 1 and arsenic binding to DNA causing cancer with possible mechanisms have been incorporated in to the book after a careful and thorough review of journals. Arsenicosis problems, photographs of affected regions and hills have been added with a view to have a glimpse of the worsening situation at the ground level. I hope this book will be valuable for teachers, students and researchers pursuing advanced research on arsenic mitigation. The suggestions from any corner are most welcome and would be incorporated in the book for further improvement."
