INVESTIGADORES
LESCANO Maia Raquel
congresos y reuniones científicas
Título:
Photochemical oxidation of As (III) using hydrogen peroxide and UVC radiation
Autor/es:
MAIA LESCANO; CRISTINA ZALAZAR; ALBERTO CASSANO; RODOLFO BRANDI
Lugar:
París
Reunión:
Congreso; IOA IUVA World Congress & Exhibition; 2011
Resumen:
Arsenic is an element
widely distributed in nature which is present in 5x10-4 % of the
earths crust and it is principally transported in the environment by water.
The pollution in water is due to natural occurrence or to anthropogenic
activities. Exposure to arsenic can
result in a variety of health problems in human, including various forms of
cancer. Due to the high toxicity of the metalloid it is that The World Health
Organization (WHO) has set a guideline of 10m/L as the drinking
water standard. In groundwater, inorganic arsenic forms arsenate (V) and
arsenite (III) are the most abundant. Arsenite form has more mobility, so it is
more difficult to remove using traditional physical and chemical processes as
adsorption, coagulation/precipitation or ion-exchange.
In this work the
effects of hydrogen peroxide initial concentration and irradiation rate in the
oxidation of As (III) in water were studied.