Open AccessOptimized inhibition on Microcystis aeruginosa by combined use of UV-C irradiation and hydrogen peroxide
Author(s) -
Jie Zheng,
Tingru Zhou,
Yi Tao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/295/2/012084
Subject(s) - hydrogen peroxide , apoptosis , microcystis aeruginosa , growth inhibition , irradiation , chemistry , necrosis , programmed cell death , lysis , kinetics , dosing , pharmacology , microbiology and biotechnology , biology , biochemistry , cyanobacteria , bacteria , physics , nuclear physics , genetics , quantum mechanics
In order to optimize H 2 O 2 /UV-C treatments on suppressing cyanobacterium, apoptotic-like and necrotic growth suppression were investigated respectively. Results showed that apoptotic-like algal inhibition exhibited a positive correlation with UV-C dose in the study period. Dosing strategy for apoptotic-like inhibition is that an environmentally friendly H 2 O 2 dose should be determined with priority. Then, UV-C dose should be mediated to achieve a specific objective for algal inhibition. For necrotic inhibition, increasing H 2 O 2 dose exhibited weak enhancement in growth inhibition while existence of UV-C irradiation could negatively influence following cell lysis after treatments. Hence, dosing strategy for necrotic inhibition is that a moderate H 2 O 2 dose without UV-C irradiation should be efficient in achieving a specific objective for algal inhibition. For mechanism of death switch, given a specific UV-C dose, corresponding high H 2 O 2 dose could cause a deficiency of ATP and switch from apoptosis-like to necrosis.