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Treated Bottom Ash Medium And Method Of Arsenic Removal From Drinking Water
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Book Synopsis Treated Bottom Ash Medium and Method of Arsenic Removal from Drinking Water by :
Download or read book Treated Bottom Ash Medium and Method of Arsenic Removal from Drinking Water written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form of activated iron adsorbent with a high affinity for arsenic. In laboratory tests, a miniscule 5 grams of pre-treated bottom ash was sufficient to remove the arsenic from 2 liters of 2400 ppb (parts per billion) arsenic-laden water to a level below 50 ppb (the present United States Environmental Protection Agency limit). By increasing the amount of pre-treated bottom ash, even lower levels of post-treatment arsenic are expected. It is further expected that this invention supplies a very low-cost solution to arsenic poisoning for large population segments.
Book Synopsis Arsenic Remediation of Drinking Water Using Iron-oxide Coated Coal Bottom Ash by :
Download or read book Arsenic Remediation of Drinking Water Using Iron-oxide Coated Coal Bottom Ash written by and published by . This book was released on 2010 with total page 1446 pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe laboratory and field results of a novel arsenic removal adsorbent called 'Arsenic Removal Using Bottom Ash' (ARUBA). ARUBA is prepared by coating particles of coal bottom ash, a waste material from coal fired power plants, with iron (hydr)oxide. The coating process is simple and conducted at room temperature and atmospheric pressure. Material costs for ARUBA are estimated to be low (~;;$0.08 per kg) and arsenic remediation with ARUBA has the potential to be affordable to resource-constrained communities. ARUBA is used for removing arsenic via a dispersal-and-removal process, and we envision that ARUBA would be used in community-scale water treatment centers. We show that ARUBA is able to reduce arsenic concentrations in contaminated Bangladesh groundwater to below the Bangladesh standard of 50 ppb. Using the Langmuir isotherm (R2 = 0.77) ARUBA's adsorption capacity in treating real groundwater is 2.6x10-6 mol/g (0.20 mg/g). Time-to-90percent (defined as the time interval for ARUBA to remove 90percent of the total amount of arsenic that is removed at equilibrium) is less than one hour. Reaction rates (pseudo-second-order kinetic model, R2>_ 0.99) increase from 2.4x105 to 7.2x105 g mol-1 min-1 as the groundwater arsenic concentration decreases from 560 to 170 ppb. We show that ARUBA's arsenic adsorption density (AAD), defined as the milligrams of arsenic removed at equilibrium per gram of ARUBA added, is linearly dependent on the initial arsenic concentration of the groundwater sample, for initial arsenic concentrations of up to 1600 ppb and an ARUBA dose of 4.0 g/L. This makes it easy to determine the amount of ARUBA required to treat a groundwater source when its arsenic concentration is known and less than 1600 ppb. Storing contaminated groundwater for two to three days before treatment is seen to significantly increase ARUBA's AAD. ARUBA can be separated from treated water by coagulation and clarification, which is expected to be less expensive than filtration of micron-scale particles, further contributing to the affordability of a community-scale water treatment center.
Book Synopsis Method of Arsenic Removal from Water by :
Download or read book Method of Arsenic Removal from Water written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form of activated iron adsorbent with a high affinity for arsenic. In laboratory tests, a miniscule 5 grams of pre-treated bottom ash was sufficient to remove the arsenic from 2 liters of 2400 ppb (parts per billion) arsenic-laden water to a level below 50 ppb (the present United States Environmental Protection Agency limit). By increasing the amount of pre-treated bottom ash, even lower levels of post-treatment arsenic are expected. It is further expected that this invention supplies a very low-cost solution to arsenic poisoning for large population segments.
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)
Book Synopsis Disposal of Waste Resulting from Arsenic Removal Processes by : D. Cornwell
Download or read book Disposal of Waste Resulting from Arsenic Removal Processes written by D. Cornwell and published by IWA Publishing. This book was released on 2004-01-01 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are a number of treatment techniques that can effectively remove arsenic from drinking water. It is essential for utilities that are in the process of selecting an arsenic removal treatment technology to also identify the types of residuals that would be generated, their expected arsenic concentrations, and pre-treatment strategies that would be required prior to final disposal. This document provides utility guidelines for disposal of residuals containing elevated concentrations of arsenic.Originally published by AwwaRF for its subscribers in 2003 This publication can be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below
Book Synopsis Innovative Materials and Methods for Water Treatment by : Marek Bryjak
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
Book Synopsis Arsenic Treatment Technologies for Soil, Waste, and Water by :
Download or read book Arsenic Treatment Technologies for Soil, Waste, and Water written by and published by DIANE Publishing. This book was released on 2002 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Manual by : Frederick Jr Rubel
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:
Book Synopsis Removal of Arsenic in Drinking Water by :
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:
Book Synopsis Proven Alternatives for Aboveground Treatment of Arsenic in Groundwater by :
Download or read book Proven Alternatives for Aboveground Treatment of Arsenic in Groundwater written by and published by . This book was released on 2002 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Implementation of Arsenic Treatment Systems: Process selection by : Zaid K. Chowdhury
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:
Book Synopsis Assessment of Arsenic Treatment Residuals by : T. Kramer
Download or read book Assessment of Arsenic Treatment Residuals written by T. Kramer and published by International Water Assn. This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research were to (1) conduc
Book Synopsis Technologies for Arsenic Removal from Drinking Water by : M. Feroze Ahmed
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 Ash at Work written by and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Understanding Arsenic Removal During Conventional Drinking Water Treatment by : Laurie Suzanne McNeill
Download or read book Understanding Arsenic Removal During Conventional Drinking Water Treatment written by Laurie Suzanne McNeill and published by . This book was released on 1996 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review on Advanced Treatment Methods for Arsenic Contaminated Soils and Water by : Suiling Wang
Download or read book A Review on Advanced Treatment Methods for Arsenic Contaminated Soils and Water written by Suiling Wang and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of treatment methods have been investigated in the laboratory or full scale to remove arsenic from drinking water and to remediate arsenic-contaminated sites. This paper gives a review on the advanced technologies for the treatment of arsenic-contaminated soils and water. Treatment methods such as oxidation, anion exchange, membrane separation, and adsorption/precipitation have been developed to remove arsenic from drinking water or groundwater. However, further research is needed to find new and more efficient substitute materials for the ion exchange resins, membranes, and adsorbents to improve the treatment and cost efficiencies. A stabilization/solidification method has been demonstrated successfully to contain arsenic in contaminated soils, sediments, and solid wastes. Vitrification is also applicable but may be more expensive due to the high energy requirements. Electrochemical methods based on electrokinetics are emerging. Especially, electrokinetics and electrodialysis are suited for fine-grained soils. Chemical extraction, either in-situ or ex-situ, can be efficient to remove bulk arsenic from contaminated soils and solid wastes. Selection of proper extractants is the key to the success of this method. Bioremediation, phytoremediation, and natural attenuation show great potential for future developments because of their environmental compatibility and cost effectiveness. Generally, it is critical to recognize that no single specific technology may be considered as generally applicable. Combination of existing technologies may provide an efficient and cost-effective treatment alternative. Use of biodegradable and environmentally benign products to enhance the remediation processes should be further investigated.
Book Synopsis Sustainable Heavy Metal Remediation by : Eldon R. Rene
Download or read book Sustainable Heavy Metal Remediation written by Eldon R. Rene and published by Springer. This book was released on 2017-07-24 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the principles, underlying mechanisms, thermodynamic functions, kinetics and modeling aspects of sustainable technologies, particularly from the standpoint of applying physical, chemical and biological processes for the treatment of wastewater polluted with heavy metals. Particular emphasis has been given to technologies that are based on adsorption, electro-coagulation, bio-precipitation, bio-solubilization, phytoremediation and microbial electrolysis. Metal contamination in the environment is one of the persisting global issues. The adverse health effects of heavy metals on human beings and its impact on the environment has been well-documented. Several physico-chemical and biological technologies have been successfully implemented to prevent and control the discharge of industrial heavy metal emissions. On the contrary, metal resource depletion has also accelerated dramatically during the 20th century due to rapid advances in industrial engineering and medical sciences, which requires large amount of raw materials. To meet the global metal demand, in recent years, novel research lines have started to focus on the recovery of metals from metal contaminated waste streams. In order to conflate both metal removal and recovery, new technologies have been successfully tested, both at the lab and pilot-scale. The target audience of this book primarily comprises of research experts, practicing engineers in the field of environmental/chemical technology and graduate students.
