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 EnviroScrub Creates “First-of-its-Kind” Iron-based Sorbent to Solve Arsenic Contamination of Water Supply 7 July, 2004 Minneapolis, Minnesota EnviroScrub Technologies Corporation has created a first-of-its–kind, patent-pending, Iron-based sorbent. The new sorbent is the only Iron-based sorbent to target specifically and simultaneously Arsenic in both its As (+3) and As (+5) valence states, providing industrial and household users a solution to meet the Environmental Protection Agency’s (EPA’s) lower Arsenic standard. EnviroScrub also produces a Manganese-based sorbent capable of removing a broader range of water contaminants, including As (+3) and As (+5), with the same high removal efficiencies. Furthermore, EnviroScrub has emerging sorbents, which are not Iron- or Manganese-based, that have characteristics tailored exclusively to remove arsenic and other problem-causing heavy metals such as Chromium. The key advantage of EnviroScrub’s sorbents is their unique ability to remove Arsenic in both its valence states simultaneously. Many of the EPA’s Best Available Technologies (BAT’s) for Arsenic removal require a pre-oxidation step to increase the Arsenic from its As (+3) valence state to its As (+5) valence state prior to removal, thus increasing both Capital costs and Operating and Maintenance costs. Furthermore, EnviroScrub’s sorbents have higher removal efficiencies than many of the BAT technologies, as proven during recent testing conducted by Legend Technical Services of Saint Paul, Minnesota, which are summarized in Table 1.
As the results show, the removal capabilities of the sorbents are very high. In fact, the sorbents removed Arsenic to levels below the detection limit of the analytical equipment. Besides having high removal efficiencies, EnviroScrub’s sorbents are flexible enough to meet the treatment needs of large public water facilities down to those of individual households. While EnviroScrub continues to develop the sorbents, Washington University in Saint Louis, Missouri, is conducting commercial studies to take the product to market sometime in the fourth quarter of this year. Sorbent parameters being studied include:
EnviroScrub plans to enter an exponentially expanding market as the EPA lowers the Maximum Contaminant Level (MCL) for Arsenic from 50 parts per billion to 10 parts per billion beginning 23 January, 2006. Approximately 54,000 systems in the USA do not meet the new MCL and will have to invest in treatment techniques. The EPA estimates that Arsenic removal will cost about $210 million per year while the American Water Works Association Research Facility (AWWARF) estimates Arsenic removal costs will range from $400 million to as high as $675 million per year. EnviroScrub’s sorbents derive significant competitive advantage not only from their ability to simultaneously remove Arsenic in both its valence states, but also from working over a range of applications from large public facilities to smaller, more numerous point-of-use sites, such as private households. “With further developments underway, EnviroScrub is planning to be a ‘one-stop-shop’ for Arsenic treatment,” says Charles F. Hammel, EnviroScrub’s Vice President and Chief Technology Officer. For more information, contact: EnviroScrub Technologies Corporation Back to News |
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