How microalgae is cultivated?

The two most common methods of microalgae cultivation are open cultivation systems, such as open ponds, tanks, and raceway ponds, and controlled closed cultivation systems using different types of bioreactors. Since then, extensive research has been carried out to cultivate microalgae in open cultivation systems.

What is the most common problem with microalgae cultivation?

Common problem areas in the production and processing of microalgae relate to strain selection and improvement, inefficient use of sunlight for photosynthesis in ponds, the need to remove large volumes of water to obtain concentrates, as well as conversion and processing into biofuels or other products listed in Figure …

What is cultivation of algae?

From Wikipedia, the free encyclopedia. Algaculture is a form of aquaculture involving the farming of species of algae. The majority of algae that are intentionally cultivated fall into the category of microalgae (also referred to as phytoplankton, microphytes, or planktonic algae).

Which of the following medium is used for the cultivation of microalgae?

Microalgae can grow in bioreactors using freshwater, nutrient media, wastewater, marine water, or even sewage water, as shown in Fig.

What are the examples of microalgae?

Typical species include Chlamydomonas reinhardtii, Dunaliella salina, and various Chlorella species, as well as Botryococcus braunii. Other important algal groups include Phaeodactylum tricornutum, Thalassiosira pseudonana, Nannochloropsis, and Isochrysis spp.

What are some benefits of cultivation microalgae?

Microalgae offer many advantages unlike the conventional techniques including high metal removal efficiency even at low metal concentrations, adaptive nature to grow under stress condition, and free of toxic sludge generation.

What nutrients does microalgae need to grow?

2.3.3 Nutrient removal Besides CO2 and light, algae require nutrients to grow, nitrogen (N) and phosphorus (P) being the most important ones. These can be supplied in the form of agricultural fertilizer, which is simple, easily available but can be a significant cost factor (Braun and Reith, 1993; Chisti, 2008b).

Is algae a good fertilizer?

Algae fertilizer is especially useful because it is a living organism. When you use algae as a fertilizer, it quickly begins to break down releasing its abundant nitrogen source. As a result, algae can act as an excellent fertilizer that can be used to help grow crops efficiently.

What microalgae consumes?

Microalgae are unicellular photosynthetic micro-organisms, living in saline or freshwater environments, that convert sunlight, water and carbon dioxide to algal biomass.

What is the difference between microalgae and macroalgae?

The key difference between macroalgae and microalgae is that macroalgae are large and multicellular aquatic photosynthetic plant-like organisms while microalgae are small and unicellular aquatic photosynthetic plant-like organisms. They are mostly aquatic and autotrophic in nature.

What kind of system do you need for microalgae cultivation?

Microalgae cultivation is generally realized in two kinds of systems: open raceways (ORW) or photobioreactors (PBR). ORWs are shallow ponds (between 10 and 50 cm depth).

What kind of water does microalgae grow in?

3.2.1 Cultivation system and growth medium Ref Cultivation system Cultivation system Growth medium Growth medium ORW PBR Fresh water Sea water Brackish water Kad X X Lar X X Bal X X

How are microalgae used to make biofuels?

To culture microalgae in industrial scale and make them commercially viable, it is essential to study in depth their characteristics, cultivation system, and factors affecting the cultivation. Microbial lipid is the most attractive component of microalgae to produce biofuels.

How are organic carbons used in microalgae cultivation?

In the mixotrophic condition, inorganic and organic carbons have simultaneously been utilized by microalgal for biomass and biochemical production. Utilization of both inorganic and organic carbon together in the cultivation process, in turn, could significantly reduce carbon and material cost.