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Master Thesis

Microalgae for livestock wastewater treatment: an overview

Abstract : The elevated ammonia (NH3) emissions from animal facilities, especially pigs, cattle and poultry, impact the air and water pollution which can lead to environmental problems (such as eutrophication) and conflicts between farmers and their neighbours. Several technologies are employed to manage the increasing of animal manure productions worldwide. Wet wastes can be removed directly by methanization (anaerobic digestion), or composting (aerobic decomposition). The gaseous ammonia emissions can be treated by biofiltration using air scrubbers. However, these techniques are not very effective when the water to be treated contains several forms of nitrogen simultaneously and at high concentrations (up to 1000 mg N. L-1) Hence, the tendency is to use microalgae; photosynthetic organisms with various interesting biochemical characteristics (accumulation of nitrogenous, phosphorus, oligo nutrients, trace and heavy metals) for a wide range of applications including wastewater treatment. Then, these microorganisms can be used in various fields, namely: in human and animal food, in energy production (biofuels), and in the production of molecules with high added value for industrial purposes (pharmaceutical and cosmetic fields).
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Master Thesis
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Submitted on : Wednesday, March 31, 2021 - 3:13:34 PM
Last modification on : Monday, April 12, 2021 - 3:26:09 AM
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  • HAL Id : dumas-03186971, version 1



Rania Karoui. Microalgae for livestock wastewater treatment: an overview. Life Sciences [q-bio]. 2021. ⟨dumas-03186971⟩



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