Water treatment technologies for removing priority pesticides.
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2023
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The development of technologies to remove pesticides from environmental matrices is an important issue as they
may be toxic to the environment and human health. The objective of this review is to understand the treatability
of five selected pesticides including the main treatment processes and conditions employed worldwide to remove
them. Despite its widespread use in water treatment plants (WTP), conventional technologies alone were only
tested for atrazine and resulted in low average removal (up to 50 %). Several studies using advanced oxidation
processes have been successful for atrazine, but few experiments have been performed under practical conditions. Regarding reported efficiencies, 80 % of atrazine was degraded when conventional treatment was followed
by ozonation using aluminum sulfate and magnafloc LT 22 as coagulants and ozone as disinfectant. For acephate
and methamidophos, the use of titanium dioxide was the best treatment, leading to 87.7 % to 100 % removal in
laboratory-scale experiments. Anodic Fenton treatment and a combination of Fenton and ultrasound exhibited
high (99 and 100 %, respectively) carbofuran removal efficiencies. In terms of time and conditions tested, the
membrane anodic Fenton treatment was the best one, but large-scale application needs to be further evaluated.
In general, advanced oxidation processes are good complementary technologies. However, understanding the
fate and toxicity of the transformation by-products is crucial, as well as its applicability (economic and environmental sustainability) on a large scale.
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Drinking water, Water treatment, Advanced oxidation process, Systematic review
Citação
BROVINI, E. M. et al. Water treatment technologies for removing priority pesticides. Journal of Water Process Engineering, v. 53, artigo 103730, jul. 2023. Disponível em: <https://www.sciencedirect.com/science/article/pii/S2214714423002490>. Acesso em: 01 ago. 2023.