Recycling of Dunaliella salina cultivation medium by integrated membrane filtration and advanced oxidation

Sustainable production of microalgae biomass for biofuel and chemicals through recycling of water and nutrient within the biorefinery context: A review

“…LX1 was analyzed and tested for its impact on growth of the same strain under varying concentrations (Zhang et al, 2013). Organic matter or algogenic organic matter are released by microalgae during its growth to communicate with other communities such as bacteria in their environment (Lian et al, 2018) as well as from cell lysis, cell membrane diffusion, and other signaling metabolites (Monte et al, 2019). Quantity and composition of AOMs released during microalgae growth depends on various biotic, abiotic factors, and growth stage as well (Lu et al, 2019).…”

Use of <em>Dunaliella salina</em> in Environmental Applications <sup>†</sup>

“…D. salina was first identified by Teodoresco in 1960. These algae are usually found in natural marine habitats and are generally responsible for turning the color of the water to red [21,22] (Figure 2). They are egg-shaped in terms of cell formation, and depending on growth conditions and light intensity, they vary in length from 5 μm to 25 μm and in width from 3 μm to 13 μm.…”

“…In particular, in the removal of heavy metals by biosorption, different types of microalgae, which are economical and environmentally friendly, are used instead of expensive biosorbents [37,38]. In addition, laboratory-scale studies are also carried out in membrane filtration and advanced oxidation systems [21]. Especially in areas where water is limited and in salty water environments, D. salina is also used in the desalination process [39].…”

Fluorescence coupled with chemometrics for simultaneous monitoring of cell concentration, cell viability and medium nitrate during production of carotenoid-rich Dunaliella salina

“…Cultures were maintained in artificial saltwater (ASW), an A4F Industrial Medium [15] and successively scaled-up volumetrically in round flasks up to 5 L, at 25ºC and under continuous illumination (150 µmol/m 2 .s) provided by fluorescent tubes. Continuous aeration (0.1-0.3 % vvm) was provided through 0.2 µm filtered air supplemented with 2% of CO2, enabling the mixing of the culture.…”

“…Although this permeate is usually clear, free of cells, and high molecular weight contaminants, it can contain some remaining nutrients, cell debris, and organic compounds [12]. Therefore, before reusing the permeate, a further intermediate treatment step, like ozone or ultraviolet (UV) light, needs to be assessed [15].…”