Chemical composition and nutritional characteristics for ruminants of the microalgae Chlorella vulgaris obtained using different cultivation conditions

Wild, Katharina; Trautmann, Andreas; Katzenmeyer, Mirco; Steingaß, H.; Posten, Clemens; Rodehutscord, M.

doi:10.1016/j.algal.2018.101385

Cited by 31 publications

(27 citation statements)

References 43 publications

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“…In the present study, values were much lower (0.032 and 0.068 g L −1 day −1 for microalgae grown in fish and cattle wastewater, respectively). Other studies also obtained higher biomass productivities (Sukačová et al, 2019;Wild et al, 2019). Our productivity values were close to those obtained by Wild et al (2019) under CO 2deficient conditions and by Moreno-Garcia et al (2019) in a blend of wastewaters.…”

Section: Introductionsupporting

confidence: 87%

“…Previous studies reported similar findings (Moreno-Garcia et al, 2019;Wild et al, 2019). Wild et al (2019) and Sukačová et al (2019) reported biomass productivities of 0.22 and 0.23 g L −1 day −1 , respectively, for Chlorella sp. cultivated in different concentrations of nutrients.…”

Section: Introductionsupporting

confidence: 77%

“…Microalgae grown in these media differed in biomass productivity and nutrient composition, which was expected, as the two wastewaters differed greatly in composition (Table 1) and microalgal production is directly influenced by the concentration of substrates in the medium (Wild et al, 2019). Previous studies reported similar findings (Moreno-Garcia et al, 2019;Wild et al, 2019). Wild et al (2019) and Sukačová et al (2019) reported biomass productivities of 0.22 and 0.23 g L −1 day −1 , respectively, for Chlorella sp.…”

Section: Introductionsupporting

confidence: 60%

“…Chlorella vulgaris is an important photosynthetic microalgal species with a variety of application possibilities. It has been used for the production of biofuel biomass, fertilizer, feed, and food (Sukačová et al, 2019;Wild et al, 2019).…”

mentioning

confidence: 99%

“…Research on microalgae has grown considerably in recent decades because, in addition to providing valuable products, microalgae can be used in wastewater treatment systems. Microalgal growth and nutrient accumulation are highly dependent on the cultivation process and the nutrient content of growth media (Wild et al, 2019). Industrial and agricultural wastewater show then it declined (2.1 mg L −1 ).…”

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confidence: 99%

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Biomass productivity of Chlorella vulgaris cultivated in fish and dairy cattle wastewaters

Nicolau

Souza

Arroyo

et al. 2021

Semina: Ciênc. Agrár.

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The biomass productivity and nutrient composition of microalgae, such as Chlorella vulgaris, depend on the cultivation process and the nutrient content of growth media. Thus, in this study aimed to investigate the biomass productivity of C. vulgaris cultivated in fish and dairy cattle wastewaters. Thirty wastewater samples (2.5 L) were collected from system of production. Microalgae were cultivated in Erlenmeyer flasks containing 10 mL of microalgae and 1,790 mL of wastewater under constant light of 5,000 lux for 16 days at 25 ± 2.0 °C. Wastewater samples differed in composition. Biomass productivity was 47 % higher (P<0.0001) in dairy cattle than in fish wastewater, reaching 67.61 g m?3 day?1 (dry matter basis, DM) when compared by Student’s t-test (P<0.05). Cultivation media also had an effect on biomass chemical composition. The C. vulgaris grown in dairy cattle wastewater was higher in crude protein and ash contents (359.6 g kg?1 DM and 230.4 g kg?1 DM, respectively), whereas microalgae grown in fish wastewater had higher nitrogen-free extract content (347.8 g kg?1 DM). Crude fat content did not vary greatly (mean of 313.15 g kg?1 DM). The pH (8.0 – 8.7) and ammonia concentration (0.07 to 0.4 mg L?1) in fish wastewater was stable throughout the 16-day experimental period. In dairy wastewater, pH increased up (6.3 to 8.9) to the fourth day and remained constant thereafter, and ammonia concentration increased up (24.3 to 28.7 mg L?1) to the eighth day and then it declined (2.1 mg L?1). The C. vulgaris was successfully grown in both wastewaters, but productivity was higher in dairy cattle wastewater.

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