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:
Download or read book Arsenic III Oxidation and Removal from Drinking Water written by Phyllis Long Frank and published by . This book was released on 1984 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
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 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
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)
Download or read book Design Manual written by Frederick Jr Rubel and published by . This book was released on 2003 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Best Practice Guide on the Control of Arsenic in Drinking Water written by Prosun Bhattacharya and published by IWA Publishing. This book was released on 2017-07-15 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arsenic in drinking water derived from groundwater is arguably the biggest environmental chemical human health risk known at the present time, with well over 100,000,000 people around the world being exposed. Monitoring the hazard, assessing exposure and health risks and implementing effective remediation are therefore key tasks for organisations and individuals with responsibilities related to the supply of safe, clean drinking water. Best Practice Guide on the Control of Arsenic in Drinking Water, covering aspects of hazard distribution, exposure, health impacts, biomonitoring and remediation, including social and economic issues, is therefore a very timely contribution to disseminating useful knowledge in this area. The volume contains 10 short reviews of key aspects of this issue, supplemented by a further 14 case studies, each of which focusses on a particular area or technological or other practice, and written by leading experts in the field. Detailed selective reference lists provide pointers to more detailed guidance on relevant practice. The volume includes coverage of (i) arsenic hazard in groundwater and exposure routes to humans, including case studies in USA, SE Asia and UK; (ii) health impacts arising from exposure to arsenic in drinking water and biomonitoring approaches; (iii) developments in the nature of regulation of arsenic in drinking water; (iv) sampling and monitoring of arsenic, including novel methodologies; (v) approaches to remediation, particularly in the context of water safety planning, and including case studies from the USA, Italy, Poland and Bangladesh; and (vi) socio-economic aspects of remediation, including non-market valuation methods and local community engagement.
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:
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
Download or read book Some Drinking water Disinfectants and Contaminants Including Arsenic written by IARC Working Group on the Evaluation of Carcinogenic Risks to Humans and published by IARC. This book was released on 2004 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: A working group of 23 experts from 13 countries met in Lyon to evaluate the evidence for carcinogenicity of arsenic (mostly naturally occurring) as a contaminant of drinking-water, and of the water-disinfectant chloramine. The working group also evaluated or re-evaluated four chlorination by-products found in drinking-water, namely chloral hydrate, di- and trichloroacetic acids, and 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone (also known as MX). High-level exposure to arsenic in drinking-water occurs in some regions such as China, Latin America, Bangladesh and West Bengal. The Working Group reviewed epidemiological studies of human cancer (mainly ecological studies in Taiwan and Chile, and several case-control and cohort studies) in relation to arsenic in drinking-water. Arsenic in drinking-water (primarily inorganic, as arsenate and to a lesser extent arsenite) was evaluated as carcinogenic to humans (Group 1) on the basis of sufficient evidence for an increased risk for cancer of the urinary bladder, lung and skin. Studies on inorganic arsenic in experimental animals provided limited evidence for its carcinogenicity, but sufficient evidence was found in experimental animals for the carcinogenicity of dimethylarsinic acid (an organic form of arsenic), which produced urinary bladder tumours in rats and lung tumours in mice after oral administration.
Download or read book As III Oxidation by Different Oxidizers written by Na Li and published by . This book was released on 2006 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arsenic (III) is much more toxic and difficult in removal than Arsenic (V) by conventional arsenic removal technologies. However, As(III) may be more prevalent in groundwater than As(V). Furthermore, as of 23 January 2006 the EPA will require all public water facilities to meet the new standard of 10 ppb maximum for arsenic in drinking water. Therefore, a method for removing As(III) is urgently needed. A precondition for better As(III) removal is to oxidize it to As(V). In this study, hydrogen peroxide, air, potassium ferrate, and potassium permanganate were used as oxidizers, and it was found that both Fe(VI) and Mn(VII) are effective As(III) oxidizers. The impacts of pH, As(III) initial concentration, and the amount of oxidizers on the As(III) oxidation efficiency of Fe(VI) and Mn(VII) were also investigated. The results show that the pH value of tested water is a significant factor affecting the As(III) oxidation efficiency of Fe(VI). However, the As(III) oxidation efficiency of Mn(VII) does not depend much on pH. Although theoretical redox analyses suggest that Fe(VI) should be a better oxidizer than Mn(VII) throughout the entire pH range, experimental results show that Mn(VII) performs better than Fe(VI) for As(III) oxidation under acidic conditions due to the acid-catalyzed redox reaction between Fe(VI) and H2O. This study also investigates subsequent As(V) removal efficiency after As(III) oxidation by Fe(VI). The removal efficiency obtained in this research is very low. This is probably because of the low concentration of Fe(VI) in the solution and because the water was not flocculated.
Download or read book Kinetics of Geochemical Processes written by Antonio C. Lasaga and published by de Gruyter. This book was released on 1981 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 8 of Reviews in Mineralogy deals with both descriptions of the kinetics of geochemical processes: the phenomenological and the atomistic. The former relies on macroscopic variables (e.g. temperature or concentrations) to describe the rates of
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
Download or read book Arsenic Removal from Drinking Water by Oxidation filtration and Adsorptive Media written by Ramona Darlington and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arsenic in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2001-12-26 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having safe drinking water is important to all Americans. The Environmental Protection Agency's decision in the summer of 2001 to delay implementing a new, more stringent standard for the maximum allowable level for arsenic in drinking water generated a great deal of criticism and controversy. Ultimately at issue were newer data on arsenic beyond those that had been examined in a 1999 National Research Council report. EPA asked the National Research Council for an evaluation of the new data available. The committee's analyses and conclusions are presented in Arsenic in Drinking Water: 2001 Update. New epidemiological studies are critically evaluated, as are new experimental data that provide information on how and at what level arsenic in drinking water can lead to cancer. The report's findings are consistent with those of the 1999 report that found high risks of cancer at the previous federal standard of 50 parts per billion. In fact, the new report concludes that men and women who consume water containing 3 parts per billion of arsenic daily have about a 1 in 1,000 increased risk of developing bladder or lung cancer during their lifetime.
Download or read book Arsenic in Drinking Water and Food written by Sudhakar Srivastava and published by Springer. This book was released on 2019-08-08 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arsenic contamination poses a major environmental problem, especially in Southeast Asian countries like Bangladesh and India. Threatening the health of millions of people due to arsenic’s toxicity and carcinogenicity, the major routes of arsenic exposure for humans are either through drinking water or crops. Rice is the crop most affected by arsenic owing to its cultivation in major arsenic contaminated areas, biogeochemical factors in the soil during rice growth, and specific features of rice that enable it take up more arsenic than other crop plants. This book addresses the problem of arsenic by pursuing a holistic approach. It presents the status quo in different parts of the world (North and South America, Europe, Asia, etc.) and provides essential information on food-related arsenic exposure risks for humans, and possible preventive and curative measures for tackling arsenic poisoning. It covers the arsenic contamination status of rice, rice-based products, other vegetables, fishes, mushrooms, and other foods, with a special focus on rice-arsenic interactions. The mechanisms of arsenic uptake, translocation and distribution in plants and grains are also explained. In closing, the book reviews a variety of prospective agronomic and biotechnological solutions to the problem of arsenic accumulation in rice grains. The book is intended for a broad audience including researchers, scientists, and readers with diverse backgrounds including agriculture, environmental science, food science, environmental management, and human health. It can also be used as an important reference guide for undergraduate and graduate students, university faculties, and environmentalists.
