Indian origin scientist develops tool that can search best solutions for pollution control
16 Jun 2009, 1328 Hrs

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Washington, June 16 A scientist of Indian origin has designed a tool that takes into consideration all feasible solutions for decreasing non-point source pollution for the amount of money available.

The scientist in question is Indrajeet Chaubey, an associate professor of agricultural and biological engineering, Purdue University.

He combined a best management practices tool with a complex genetic algorithm that can search out the best solutions for non-point source pollution control in a watershed.

By analyzing data from an area in just a few hours, the tool can compute the most cost-effective pollution-control strategies for water resources affected by agriculture, a process that currently takes weeks or months.

"When you have got limited resources to control non-point pollution in an area, you have to decide where to best use your resources," Chaubey said. "At the same time, you want to be sure you don't disrupt the agricultural production in an area," he added.

Chaubey has spent the last several years developing a best management practices tool that takes into consideration all feasible solutions for decreasing non-point source pollution, or pollution that gets into water through runoff.

The tool determines the best solution, such as changes in tillage practices, grass coverage and structural changes on the land, based on the amount of pollution that can be eliminated, the economic impact to agricultural land and other factors.

The calculations used include soil, water, topography and other data usually collected by governmental agencies.

The algorithm assesses which of those practices will result in the most pollution control for the amount of money available with as little disruption to agriculture as possible.

"You have to look at the economic information at the same time. If the solution we provide will negatively impact farmers, it will not be adopted," Chaubey said.

"Combining economic analysis with environmental analysis gives solutions that are more likely to be acceptable to farmers and watershed managers," he added.

Chaubey said the system was tested with information from the L'Anguille River Watershed in eastern Arkansas.

Further testing is being done on six locations in Indiana.

Chaubey also expects to develop the tool in a format accessible by government officials to evaluate projects in their jurisdictions. (ANI)

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