TY - GEN
T1 - Removal of Cyanotoxins in Drinking Water Using Advanced Oxidation Processes
AU - Jasim, Saad
AU - Uslu, Merih
AU - Seth, Rajesh
AU - Biswas, Nihar
AU - Saththasivam, Jayaprakash
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2022
Y1 - 2022
N2 - The efficiency of ozone treatment on the removal of three cyanotoxins in simulated Qatar tap water was evaluated. The reactivity of cyanotoxins with ozone followed the order as microcystin-LR (MLR) > cylindrospermopsin (CYN) > anatoxin-a (ANA). Approximately 70% of MLR, CYN and ANA were oxidized with an applied ozone dosage of 0.04 mg/L, 0.085 mg/L and 0.26 mg/L, respectively. Increased ozone dose greatly improved the oxidation efficiency, and a complete removal was achieved for all cyanotoxins. The level of pH affected the removal differently; highest removal rates were obtained at pH 5, pH 10 and pH 7.2 for MLR, ANA and CYN, respectively. There was no obvious effect of hydrogen peroxide addition on ozone treatment efficiency. Based on the calculated pseudo first order rate constants, the estimated ozone doses required for the 99.5% removal of 0.2 mg/L MLR, CYN and ANA were 0.12 mg/L, 0.22 mg/L and 1.3 mg/L, respectively.
AB - The efficiency of ozone treatment on the removal of three cyanotoxins in simulated Qatar tap water was evaluated. The reactivity of cyanotoxins with ozone followed the order as microcystin-LR (MLR) > cylindrospermopsin (CYN) > anatoxin-a (ANA). Approximately 70% of MLR, CYN and ANA were oxidized with an applied ozone dosage of 0.04 mg/L, 0.085 mg/L and 0.26 mg/L, respectively. Increased ozone dose greatly improved the oxidation efficiency, and a complete removal was achieved for all cyanotoxins. The level of pH affected the removal differently; highest removal rates were obtained at pH 5, pH 10 and pH 7.2 for MLR, ANA and CYN, respectively. There was no obvious effect of hydrogen peroxide addition on ozone treatment efficiency. Based on the calculated pseudo first order rate constants, the estimated ozone doses required for the 99.5% removal of 0.2 mg/L MLR, CYN and ANA were 0.12 mg/L, 0.22 mg/L and 1.3 mg/L, respectively.
KW - Advanced oxidation
KW - Cyanotoxins
KW - Drinking water
KW - Ozone
UR - http://www.scopus.com/inward/record.url?scp=85129855612&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-76081-6_11
DO - 10.1007/978-3-030-76081-6_11
M3 - Conference contribution
AN - SCOPUS:85129855612
SN - 9783030760809
T3 - Advances in Science, Technology and Innovation
SP - 103
EP - 110
BT - Sustainable Energy-Water-Environment Nexus in Deserts - Proceeding of the 1st International Conference on Sustainable Energy-Water-Environment Nexus in Desert Climates
A2 - Heggy, Essam
A2 - Bermudez, Veronica
A2 - Vermeersch, Marc
PB - Springer Nature
T2 - 1st International Conference on Sustainable Energy-Water-Environment Nexus in Desert Climates, ICSEWEN 2019
Y2 - 2 December 2019 through 5 December 2019
ER -