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Technologhy Absorption
- Thread starter abha
- Start date
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- absorption technologhy
shilpisri2000
Shilpi Srivastava
Hi Abha,
You must state what is the objective behind finding this out? Anyways, something below FYI...............
Arsenic is technology success story
As New Jersey’s recent decision to lower its standard for arsenic in drinking water—a move that California is also contemplating—attests, small communities across the United States appear to be finding cost-effective ways to remove the toxic element from their water.
This development contradicts the dire predictions put forth when the U.S. EPA promulgated its 10 parts-per-billion (ppb) standard in 2001. Organizations like the National Rural Water Association and the American Council on Science and Health, Inc., prophesized that small, rural drinking water suppliers would be forced to shut down because of the financial burden. Like the nationwide standard, New Jersey’s new 5-ppb standard is set to take effect in 2006.
“Developments in arsenic removal methods over the last several years allow communities many options for treatment,” according to U.S. Filter, a company that is offering a sorbent technology for remediating arsenic in drinking water. In February, EPA’s Environmental Verification program announced that initial tests designed to validate the operation of arsenic removal technologies under conditions typically faced by small drinking water providers confirm the ability of two additional arsenic-removal technologies to meet or beat the 10-ppb standard.
The purveyors of these emerging technologies claim that they are useful for both large and small drinking water suppliers because they can remove arsenic less expensively than the best available technologies (BATs) that EPA has identified.
The technology developed by ADI International, Inc., is an iron-enhanced adsorption media called MEDIA G2, whereas Kinetico, Inc., and Alcan Chemicals teamed up to create an iron-enhanced activated alumina adsorption media. Iron and arsenic have a chemical affinity, and most technologies remove arsenic most effectively when the element is in the form of As(V), according to EPA. The iron also aids in transforming arsenic from the arsenite (As[III]) form, which is likely to occur in anaerobic ground waters, to As(V).
Five communities that each serve fewer than 5000 people are already using the ADI technology, says Eric Winchester, the company’s vice president. Other small communities are interested; at least 50% of the 200–300 pricing proposals the company has received come from small municipalities, he says.
Although some technologies are more expensive to operate in western states like New Mexico, Arizona, and Nevada because of the silica in their water, Winchester says silica does not impact ADI’s technology. He says that his technology’s proven ability to significantly reduce arsenic levels is one of the reasons his native Canada is currently considering a 5-ppb standard.
“Once you have a standard, there is a huge economic and technical incentive for competitors to come up with lower-cost technologies,” observes Erik Olson, a senior attorney with the Natural Resources Defense Council (NRDC), an environmental group that lobbied for the lowest possible arsenic standard. “That’s why we feel that time after time when EPA sets health standards, or clean air or drinking water standards, the costs of compliance plummet from the time that EPA was estimating costs to the time that implementation is actually required.” —KELLYN S. BETTS
Regards,
You must state what is the objective behind finding this out? Anyways, something below FYI...............
Arsenic is technology success story
As New Jersey’s recent decision to lower its standard for arsenic in drinking water—a move that California is also contemplating—attests, small communities across the United States appear to be finding cost-effective ways to remove the toxic element from their water.
This development contradicts the dire predictions put forth when the U.S. EPA promulgated its 10 parts-per-billion (ppb) standard in 2001. Organizations like the National Rural Water Association and the American Council on Science and Health, Inc., prophesized that small, rural drinking water suppliers would be forced to shut down because of the financial burden. Like the nationwide standard, New Jersey’s new 5-ppb standard is set to take effect in 2006.
“Developments in arsenic removal methods over the last several years allow communities many options for treatment,” according to U.S. Filter, a company that is offering a sorbent technology for remediating arsenic in drinking water. In February, EPA’s Environmental Verification program announced that initial tests designed to validate the operation of arsenic removal technologies under conditions typically faced by small drinking water providers confirm the ability of two additional arsenic-removal technologies to meet or beat the 10-ppb standard.
The purveyors of these emerging technologies claim that they are useful for both large and small drinking water suppliers because they can remove arsenic less expensively than the best available technologies (BATs) that EPA has identified.
The technology developed by ADI International, Inc., is an iron-enhanced adsorption media called MEDIA G2, whereas Kinetico, Inc., and Alcan Chemicals teamed up to create an iron-enhanced activated alumina adsorption media. Iron and arsenic have a chemical affinity, and most technologies remove arsenic most effectively when the element is in the form of As(V), according to EPA. The iron also aids in transforming arsenic from the arsenite (As[III]) form, which is likely to occur in anaerobic ground waters, to As(V).
Five communities that each serve fewer than 5000 people are already using the ADI technology, says Eric Winchester, the company’s vice president. Other small communities are interested; at least 50% of the 200–300 pricing proposals the company has received come from small municipalities, he says.
Although some technologies are more expensive to operate in western states like New Mexico, Arizona, and Nevada because of the silica in their water, Winchester says silica does not impact ADI’s technology. He says that his technology’s proven ability to significantly reduce arsenic levels is one of the reasons his native Canada is currently considering a 5-ppb standard.
“Once you have a standard, there is a huge economic and technical incentive for competitors to come up with lower-cost technologies,” observes Erik Olson, a senior attorney with the Natural Resources Defense Council (NRDC), an environmental group that lobbied for the lowest possible arsenic standard. “That’s why we feel that time after time when EPA sets health standards, or clean air or drinking water standards, the costs of compliance plummet from the time that EPA was estimating costs to the time that implementation is actually required.” —KELLYN S. BETTS
Regards,
jitendra05
Banned
Hi everyone,
Can any one tell me about an organization in which technology has been absorbed and they have driven benefits out of that
bye
abha
Hey abha, i will give you required information on technology absorption. Actually, once a technology is imported from a different country or company, it requires to be absorbed and modified in accordance with the local specifications. For more details, please download my presentation.