The Effect of Using Light Intensity Increasing Solution for Algae Growth in Wastewater Treatment Environment

Fish waste consists of various substances that have the potential to pollute the environment. However, microalgae can absorb these substances and convert them into valuable biomass. This study is the first to investigate how mixed microalgae efficiently utilize nitrogen and phosphorus from wastewater as important nutrients for their propagation. The present study investigates a new approach to studying the effects of changing the light spectrum on the growth of mixed microalgae cultured in a fish waste-contaminated environment. The innovative method presented here involves the use of a 9,10-diphenylanthracene solution to treat fish wastewater by mixed microalgae, providing optimal photons to promote their growth. A special experimental setup was developed using a white LED lamp in a double-layered transparent tube filled with a 10,9-diphenylanthracene solution to manipulate the spectrum. This setup was carefully positioned in the center of an Erlenmeyer flask to ensure uniform light distribution. Aluminum foil was used to reflect the photons into the flask to avoid light loss. The results of the study showed a remarkable 230% increase in biomass productivity of mixed microalgae when this method was applied. Furthermore, the results obtained with the logistic and Gompertz growth models are in perfect agreement with the empirical findings and represent a pioneering achievement in modeling in this particular area.