Technologies for arsenic removal

Gillman, G.P. (2006) A simple technology for arsenic removal from drinking water using hydrotalcite. Science of the Total Environment, 366(2-3), 926-31. 

R. Johnston, H. Heijnen, Safe water technology for arsenic removal. Report, World Health Organization (WHO), 2002. 

Johnston, R., Heinjnen, H. Wiuzel, P (2001) Safe water technology. In Ahmed, M.F.,AK, M.A. Adeel,Z. (eds.) Technologies for arsenic removal from drinking water. Matiar Manush, Dhaka, Bangladesh, pp. 1-98. 

Gholami, M.M., Mokhtari, M.A., Aameri, A. Alizadeh Fard, M.R. (2006) Application of reverse osmosis technology for arsenic removal from drinking water. Desalination 200, 725-727. 

Sutherland, D. Woolgar, M. (2001) Household-level technologies for arsenic removal. Water, 21,31-32. 

Dambies, L. (2004) Existing and prospective sorption technologies for the removal of arsenic in water. Separation Science and Technology, 39(3), 603-27. 

Gu, Z., Fang, J. and Deng, B. (2005) Preparation and evaluation of GAC-based iron-containing adsorbents for arsenic removal. Environmental Science and Technology, 39(10), 3833-43. 

Morgada de Boggio, M.E., Levy, I.K., Mateu, M., Bhattacharya, P., Bundschuh, J., and Litter, M.I. Low-cost technologies based on heterogeneous photocatalysis and zerovalent iron for arsenic removal in the Chacopampean plain, Argentina, in J. Bundschuh, M.A. Armienta,... 

Mehtas N, Conklin M, Farrell J. (2002). Electrochemical study of arsenate and water reduction on iron media used for arsenic removal from potable water. Environmental Science and Technology 36(14) 3188-3193. 

The book is a first of its kind as there are no other contemporary publications on this topic available and we believe that this book will provide the readers with a thorough understanding of the different available membrane technologies for the removal of traces of toxic compounds such as uranium, arsenic, and fluoride from water. 

Petrusevski, B., Boere, J., Shahidullah, S.M., Sharma, S.K. Schippers, J.C. (2002) Adsorbent-basedpoint-of-use system for arsenic removal in rural areas. Journal of Water Supply Research and Technology -AQUA, 51, 135-144. 

Arsenic occurrence in natural waters and technologies for its removal... 

In another application, for a private client, the sponge was used to remove arsenic ions from contaminated wastewater at a bulk fueling terminal. The sponge was used as the finishing technology for water that had been pumped through an air stripper and a granulated carbon bed. In this case, 378,000 gal (1.43 x lO m ) of water was treated at an approximate cost of 0.013/gal ( 0.0034/liter)(N. Hart, personal communication). 

The technology of arsenic waste reduction via filtration for removal of particulate arsenic from wastewater streams should be easily transferable to other semiconductor firms as well as to any other industry where heavy metal solids are produced. 

The technology to be applied for removing arsenic solids is considered state-of-the-art. A flow diagram of the Installed system is depicted in Figure 3-1. The arsenic removal system will be located within HP s slurry room as indicated in Figure 3-2. This was the same location where pilot studies were carried out. 

Langmuir isotherms indicate that there are limits to the amount of arsenic that an adsorbant may adsorb. Knowing these limits are important in developing effective treatment technologies for removing arsenic from water (Chapter 7) and determining the ability of soils, sediments, or other natural materials to remove arsenic from natural waters or acid mine drainage (Chapter 3). 

There are several natural processes that can remove arsenic from groundwaters and other natural waters. These processes were introduced in Chapter 3 and include (1) precipitation and association with sulfides, (2) sorption on clay minerals, and (3) carbonate associations. This section discusses these processes in further detail. Additional discussions occur in Chapter 7, where some of the processes are utilized in treatment technologies for removing arsenic from water. 

Driehaus, W Jekel, M. and Hildebrandt, U. (1998) Granular ferric hydroxide - a new adsorbent for the removal of arsenic from natural water. Journal of Water Supply Research and Technology - Aqua, 47, 30-35. 

Beolchini, F., Pagnanelli, F., De Michelis, I. and Veglib, F. (2006) Micellar enhanced ultrafiltration for arsenic(V) removal effect of main operating conditions and dynamic modeling. Environmental Science and Technology, 40(8), 2746-52. 

Uddin, M.T., Mozumder, M.S.I., Islam, M.A. et al. (2007a) Nanofiltration membrane process for the removal of arsenic from drinking water. Chemical Engineering and Technology, 30(9), 1248-54. 

Membrane contactors can be effectively used also for disinfection purposes (e.g., water ozonation) [28] or for the oxidation of species present into water, for example, arsenic. Although the content of arsenic in seawater is today within the accepted limits, it is foreseen that in the future its concentration could increase, due to the increase of pollution of rivers and groundwaters. Usually, arsenic is contained in water as As(III) and As(V) forms, in different amounts. All arsenic-removal technologies have a better performance when arsenic is present in the pentavalent... 

Kukucka M., Kukucka N., Vojinovic Miloradov M., Tomic Z., Siljeg M. A novel approach to determine a resin s sorption characteristics for the removal of natural organic matter and arsenic from groimdwater. Water Science and Technology Water Supply 2011 11(6) 726-739. 

Anion exchange for arsenic removai is one of the BAT (best available technology) recommended by the U.S. Environmental Protection Agency (EPA). Extensive studies, both at the bench and pilot scale have shown that for a source water containing <120 mg/L sulfate and <500 mg/L TDS, ion exchange may be the arsenic-removal process of choice (3,4,19-21). 

Despite the fact that there were some major hindrances during the operation, some of the projects in literature were able to meet their remediation goals at least partially. This was true especially in the case of Geokinetics, which has pioneered in this field in Europe. The results of its field projects as published show that electrokinetics is a promising technology for the effective remediation of soil (Lageman, 1993). The field trials held in the Netherlands were for the removal of metals like lead, copper, zinc, arsenic, cadmium, nickel, chromium, and so on from different types of soil like peat and sand. 

The current technologies for removing arsenic perform most effectively when treating arsenic in the form of arsenic(V), so water treatment strategies require preoxidation of the drinking water. Once in the form of arsenic(V), there are a number of possible removal strategies. For example, Fe2(S04)3 could be added to precipitate FeAs04, which is then removed by filtration. 

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