Year: 2008
Type: conference-paper
Abstract: Significant levels of naturally occurring phosphates in groundwater in some arsenic affected regions can\npotentially reduce removal efficiencies of some critical iron-based arsenic treatment systems that currently\nare among the most simple and low-cost treatment approaches. From March-December 2007, the Massachusetts\nInstitute of Technology (MIT), the Centre for Affordable Water and Sanitation Technology (CAWST)\nand LEDARS, a Bangladeshi NGO, conducted pilot testing in Bangladesh of the Kanchan Arsenic Filter.\nBecause of the varying phosphate levels in groundwater in different districts in Bangladesh, the project\nalso included an analysis of phosphate data from arsenic studies conducted by other organizations in high\narsenic areas in Vietnam, Cambodia, West Bengal and Inner Mongolia and compared them to results from\nBangladesh and Nepal.The results from the analysis indicated that the ratio of iron to phosphates in the\ngroundwater might be a good indicator for the effectiveness of iron-based arsenic removal systems in high\narsenic areas.
Language: English
Subfield: Environmental Chemistry
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2803286091