scholarly journals Toxicity of Wastewater with Regard To Ammonia Evaluated by Algal Growth Inhibition Test: A Case Study Using Wastewater Treatment Pilot Plant

2016 ◽  
Vol 52 (4) ◽  
pp. 93-104 ◽  
Author(s):  
FUMIHIKO TAKEDA ◽  
KOYA KOMORI ◽  
MIZUHIKO MINAMIYAMA ◽  
SEIICHIRO OKAMOTO
Keyword(s):  
Wastewater Treatment ◽  
Growth Inhibition ◽  
Pilot Plant ◽  
Algal Growth ◽  
Inhibition Test ◽  
Growth Inhibition Test ◽  
Algal Growth Inhibition Test ◽  
Algal Growth Inhibition

scholarly journals Modifications to the algal growth inhibition test for use as a regulatory assay

2000 ◽  
Vol 19 (1) ◽  
pp. 36-41 ◽  
Author(s):  
Steven W. Geis ◽  
Kari L. Fleming ◽  
Eric T. Korthals ◽  
Greg Searle ◽  
Lou Reynolds ◽  
...  
Keyword(s):  
Growth Inhibition ◽  
Algal Growth ◽  
Inhibition Test ◽  
Growth Inhibition Test ◽  
Algal Growth Inhibition Test ◽  
Algal Growth Inhibition

scholarly journals The effect of using light emitting diodes and fluorescent lamps as different light sources in growth inhibition tests of green alga, diatom, and cyanobacteria

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247426
Author(s):  
Akira Okamoto ◽  
Miyuki Imamura ◽  
Kazune Tani ◽  
Takeru Matsumoto
Keyword(s):  
Growth Inhibition ◽  
Green Alga ◽  
Light Emitting Diodes ◽  
Algal Growth ◽  
Inhibition Test ◽  
Light Emitting ◽  
Growth Inhibition Test ◽  
Fluorescent Lamps ◽  
Algal Growth Inhibition Test ◽  
Algal Growth Inhibition

Aquatic organisms have been used to investigate the safety of chemicals worldwide. One such assessment is an algal growth inhibition test. Algal growth inhibition tests are commonly performed using a growth chamber with fluorescent lamps as the lighting source, as test guidelines require continuous uniform fluorescent illumination. However, fluorescent lamps contain mercury, which has been identified as hazardous to humans and other organisms. The Minamata Convention (adopted in 2013) requires reduction or prohibition of products containing mercury. On the other hand, light-emitting diodes do not contain mercury and provide a photosynthetically effective wavelength range of 400–700 nm which is an adequate light intensity for algal growth. Light-emitting diodes are thus preferable to fluorescent lamps as a potential light source in algal growth inhibition tests. In this study, we investigated if light-emitting diodes could be substituted for fluorescent lamps in growth inhibition studies with green alga (Pseudokirchneriella subcapitata), diatom (Navicula pelliculosa), and cyanobacteria (Anabaena flos-aquae). Algal growth inhibition tests were performed using five different chemicals known to have different modes of action and are assigned as reference substances in the test guidelines. The results of each algal test showed similar values between light-emitting diodes and fluorescent lamps in terms of conditions for the growth inhibition rate and percent inhibition in yield of each chemical. It was therefore concluded that using light-emitting diodes instead of fluorescent lamps as a lighting source had no effect on the algal growth inhibition test results.

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