Evaluation of the operational conditions in the production and morphology of Chlorella sp.

Abstract

It was evaluated the effect of operational conditions in the production of Chlorella sp. after its selection from genus Chlorella sp., Scenedesmus sp., Nannochloris sp., Tetraselmis sp. and Dunaliella salina. Microalgae were inoculated in drinking water with addition of NPK fertilizer (N 24%, P 24%, K 18%), at a concentration of 0.5 g/L, agitation of 150 rpm, temperature 25 °C, light intensity of 1680 lumens at a color temperature of 6400K, without pH control for 8 days. The cellular concentrations obtained were 3.72x107 (Chlorella sp.), 1.36x107 (Scenedesmus sp.), 3.55x107 (Tetraselmis sp.), 5.74x107 (Nannochloris sp.) and 3.45x106 (Dunaliella salina), where the microalgae Chlorella sp., shows invasive capacity in drinking water cultivations. Applying the 2n-p fractional factorial design concept for the elemental composition of the microalgae and the cellular morphology, it was obtained 44.33% of C, 7.09% of H, 8.53% of N and 0.84% of S for the Chlorella sp.

Pilot-Scale Cultivation of the Snow Alga Chloromonas typhlos in a Photobioreactor

“…with being the molar masses of CO 2 and C, respectively, V r the volume of the reactor, and 0.5 being the average percentage of the carbon content in the biomass ( Mirón et al, 2003 ; Tang et al, 2011 ). Higher or lower carbon content is nonetheless possible ( Mandalam and Palsson, 1998 ; Patil et al, 2012 ; Rendón-Castrillón et al, 2021 ) which might lead to significant differences ( Adamczyk et al, 2016 ).…”