Removing Arsenic from Water through Nano filters

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IN THE SPOTLIGHT

Removing Arsenic from Water through Nano filters

(Photo by Bastiaan Slabbers/NurPhoto via Getty Images)

The use of nanomaterials from low-value agricultural by-products provide clean water for drinking and cooking. It has the potential to enhance the productivity of Filipino farmers and improve his and her quality of like in an affordable manner.

Arsenic is considered a major health risk by the World Health Organization which has set a maximum limit in drinking water to 10 parts per billion (0.01 milligrams per liter) of arsenic. At these very low levels, arsenic analysis is expensive and requires sophisticated equipment.

Arsenic contamination of groundwater and surface water is not well studied in the Philippines where arsenic is a pollutant from copper and nickel mining as well as from the semiconductor industry.

What is troubling is the less well known but equally important possibility that communities close to volcanoes are also exposed to arsenic contamination. This is due to the soil and groundwater characteristics as well as the volcanic activity nearby.

Arsenic contamination is highly associated with clay soils with suspended arsenic compounds as well as young volcanic deposits or hot springs and river deltas.

 

By: 
Edmar P. Casa
DOST-ITDI

Published by:
Department of Science and Technology-Science and Technology Information Institute (DOST-STII)

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Wind Energy: Abundant, Unused

Harnessing energy from oil has damaged the planet, triggering what is feared to be changes in global climate. On the other end, wind is abundant and in “commercial” quality over the land masses and seas of the Philippines. Wind is air that moves around in reaction to...

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Dream big, work hard for it and success will follow – this is true in a photocatalysis endeavor I was involved in. Photocatalysis can be defined as a “catalytic reaction involving the production of a catalyst by absorption of light”. Photocatalysts can absorb a photon...

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Sensors that rapidly screen and detect hazardous contaminants in and around a mining site are now available. Affordable and made locally, the sensors are used to determine what appropriate actions to take and, more importantly in cases of remediation, whether the...

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This coffee table book named Bridge, designed to link scientific minds to practical people that use the results of R&D. Bridge captures the goals of DOST in making science weave into the lives of people as expressed in DOST’s taglines “Agham na Ramdam” and “Science for the People.”

Removing Arsenic from Water through Nano filters

The use of nanomaterials from low-value agricultural by-products provide clean water for drinking and cooking. It has the potential to enhance the productivity of Filipino farmers and improve his and her quality of like in an affordable manner. Arsenic is considered a...

read more

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Harnessing energy from oil has damaged the planet, triggering what is feared to be changes in global climate. On the other end, wind is abundant and in “commercial” quality over the land masses and seas of the Philippines. Wind is air that moves around in reaction to...

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Dream big, work hard for it and success will follow – this is true in a photocatalysis endeavor I was involved in. Photocatalysis can be defined as a “catalytic reaction involving the production of a catalyst by absorption of light”. Photocatalysts can absorb a photon...

read more

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Sensors that rapidly screen and detect hazardous contaminants in and around a mining site are now available. Affordable and made locally, the sensors are used to determine what appropriate actions to take and, more importantly in cases of remediation, whether the...

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Philippines’ Microsatellite: Going Farther, Reaching Higher

The Phililppines’ first microsatellite to be launched in 2016 marks a new era of space technology development in the country. In the last 10 years, the Philippines has experienced devastating calamities such as landslide combined with a minor earthquake that buried...

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