Microalgae do not die. Lifespan of the microalgae is limitless as long as it is in the wastewater and nutrients are available. You have to be careful of competition of species. The microalgae are constantly being harvested. Microalgae require nutrients, carbon dioxide and sunlight. They will decay only if the nutrients are absent. Also they must be agitated constantly otherwise they will settle to the bottom of the ponds and biofoul. If the ponds are too deep then the sunlight will not reach the algae, which in turn will lead to decay. So there are many factors to be considered.
Published by Chetan Shukla, Clean Environmental Technologies Pvt. Ltd. - Director
Microalgae do not die. Lifespan of the microalgae is limitless as long as it is in the wastewater and nutrients are available. You have to be careful of competition of species. The microalgae are constantly being harvested. Microalgae require nutrients, carbon dioxide and sunlight. They will decay only if the nutrients are absent. Also they must be agitated constantly otherwise they will settle to the bottom of the ponds and biofoul. If the ponds are too deep then the sunlight will not reach the algae, which in turn will lead to decay. So there are many factors to be considered.