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Title: Evaluating arsenic and manganese removal from water by chlorine oxidation followed by clarification.
Authors: Pires, Viviane das Graças Rodrigues
Lima, Diego Roberto de Sousa
Aquino, Sergio Francisco de
Libânio, Marcelo
Keywords: Arsenic
Water treatment
Issue Date: 2015
Citation: PIRES, V. G. R. et al. Evaluating arsenic and manganese removal from water by chlorine oxidation followed by clarification. Brazilian Journal of Chemical Engineering, v. 32, n. 2, p. 409-419, 2015. Disponível em: <>. Acesso em: 21 out. 2015.
Abstract: This paper investigates the simultaneous removal of arsenic [As(V) or As(III)] and manganese [Mn(II)] from natural waters of low and high turbidity by clarification (with polyaluminum chloride and aluminum sulfate as primary coagulants) associated or not with chlorine pre-oxidation. The results showed that the clarification process exhibited low Mn(II) removal, that varied from 6% to 18% and from 19% to 27% for natural waters of low and high turbidity, respectively. The use of chlorine as pre-oxidant increased Mn(II) removal up to 77% and was associated with the formation of birnessite. Regarding As(V) removal by clarification, particularly for high turbidity water, a concentration lower than that established by the National Drinking Water Quality Standards (10 μg.L-1) was achieved in almost all tests. Oxidation preceding the clarification led to AsIII removal efficiencies from 80% to 90% for both coagulants and types of water
ISSN: 0104-6632
metadata.dc.rights.license: Todo o conteúdo do periódico Brazilian Journal of Chemical Engineering, exceto onde identificado, está sob uma licença Creative Commons que permite copiar, distribuir e transmitir o trabalho em qualquer suporte ou formato desde que sejam citados o autor e o licenciante. Não permite o uso para fins comerciais. Fonte: Brazilian Journal of Chemical Engineering <>. Acesso em: 20 ago. 2019.
Appears in Collections:DEQUI - Artigos publicados em periódicos

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