@inproceedings{d221286b4a114df99059751dede95a8c,
title = "Exploring low-cost arsenic removal alternatives in Costa Rica",
abstract = "Costa Rica was considered as a country without arsenic in drinking water. However, polluted groundwater resources (up to 200 μg L-1) in the North and North Pacific regions were detected in 2008. This document presents preliminary coagulation results of experiments of arsenic removal with iron chloride and a synthetic or a natural flocculant, Solar Oxidation and Removal of Arsenic (SORAS), and local adsorbents. The coagulation experiments showed 96% removal from around 200 μg L-1 arsenic spiked water. The SORAS experiments showed similar results with a residual arsenic concentration below 10 μg L-1 after 4 h of sunlight. In both cases, coagulation and SORAS, a further sand filtration step to reduce turbidity and color is needed. Among the local adsorbents tested, a soil rich biotite (iron(II)-bearing silicates) looks promising as powder application. More than 94% removal was obtained in 200 μg L-1 spiked water dosing 8 g L-1 of the soil. The systems evaluated look promising as family system.",
author = "Romero, {L. G.} and J. Valverde and P. Rojas and Vargas, {M. J.} and Araya, {J. A.}",
year = "2014",
doi = "10.1201/b16767-312",
language = "Ingl{\'e}s",
isbn = "9781138001411",
series = "One Century of the Discovery of Arsenicosis in Latin America (1914-2014): As 2014 - Proceedings of the 5th International Congress on Arsenic in the Environment",
publisher = "CRC Press/Balkema",
pages = "853--855",
booktitle = "One Century of the Discovery of Arsenicosis in Latin America (1914-2014)",
note = "5th International Congress on Arsenic in the Environment, As 2014 ; Conference date: 11-05-2014 Through 16-05-2014",
}