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Photooxidative Treatment of Sulfurous Water for Its Potabilization ¶
Author(s) -
Hernández Fernando,
Geissler Gunther
Publication year - 2005
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.2005.tb00237.x
Subject(s) - ozone , chemistry , photochemistry , photocatalysis , advanced oxidation process , salt (chemistry) , water treatment , environmental chemistry , catalysis , environmental science , environmental engineering , organic chemistry
The feasibility of potabilization of sulfurous water was investigated by photochemical oxidation processes using a batch photoreactor and a continuous‐flow photoreactor, equipped with UV lamps of 1000 W and 1500 W, respectively. Additionally, two advanced processes of oxidation were applied i.e . with a use of a UV light/H 2 O 2 /air and UV light/H 2 O 2 /O 3 /air. These two processes were compared for their efficiency to the direct oxidation process where ozone is used in the absence of UV light. Results obtained for both advanced processes showed better oxidation than takes place by ozone in the absence of UV light. After the photooxidation processes, different processes for the absorption or precipitation of sulfates were investigated to comply with the World Health Organization (WHO) norm that demands a limit of ≤250 mgL −1 of SO 4 2− in drinking water. Additionally, reverse osmosis was simulated using Osmonics Inc. software to predict the feasibility of lowering the salt concentration below WHO limits.