Operational hygiene and cultivation procedures were reviewed.
Many studies have reported that growth rate and lipid accumulation in microalgae are significantly influenced by culture conditions (such as irradiance, salt concentration, and medium selection) [ 14, 18, 19] and operational strategies (such as two-stage cultivation, semi-batch cultivation, or continuous cultivation) [ 5, 10, 12, 20].
For closed cultivation systems the operational costs decrease to 0.1 0.6 €·kg− 1 algae and the energy consumption to 0.1 0.7 kWh·kg− 1 algae.
Alternatively, 'Candidatus Competibacter phosphatis' cultivated under certain controlled operational conditions in laboratory reactors only reach through adaptation their typical maximum activity after a certain period of cultivation and are not directly competitive from the moment of inoculation.
The aim of this work was to evaluate the performance (in terms of protein, carbohydrate and lipid content and productivity) of selected Chlorella strains grown under conditions devised to reduce operational costs and increase the sustainability of the cultivation process.
"Their operational skills are reconstruction, liaison with civilian forces, the cultivation of intelligence, and the study of religion and ethnicity," he wrote.
Although today's studies of microbial diversity are no longer prone to cultivation limitations of 1985, they are still predominantly framed around operational, technique-based definitions rather than a deep understanding of the underlying biology.
Literature depicts that cultivation of microalgae in a controlled environment requires low initial capital, operational cost and low technical costs.
Moreover, the lack of light during cell cultivation is beneficial from the economic point of view, as it substantially reduces operational costs.
Another aspect is that in order to fully benefit from intercrop cultivation via the production of biogas, large investments as well as close economic and operational co-operation between the farmers and other local actors is required.
