Enhancement of nutrients removal and biomass accumulation of Chlorella vulgaris in pig manure anaerobic digestate effluent by the pretreatment of indigenous bacteria

Gu, Zhiqiang; Liu, Yuhuan; Zou, Guyue; Zhang, Qi; Lu, Rumeng; Yan, Hongbin; Cao, Leipeng; Liu, Tongying; Ruan, Roger

doi:10.1016/j.biortech.2021.124846

Cited by 48 publications

(8 citation statements)

References 38 publications

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“…These figures can explain the lower protein content characterizing ACs. The fact that Chlorella cultivated on agricultural wastewater containing ammonia as a N source (100-150 mg L −1 ), similar to that of NFP, showed a protein content in line with those of ACs, i.e., 327 ± 150 g kg −1 DM [31,44,45] seems to confirm that total N affected total protein content.…”

Section: Biochemical Composition Of Ac Biomassesmentioning

confidence: 60%

Growth Performance, Biochemical Composition and Nutrient Recovery Ability of Twelve Microalgae Consortia Isolated from Various Local Organic Wastes Grown on Nano-Filtered Pig Slurry

Dell’Orto

Scaglia

et al. 2022

Molecules

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This paper demonstrated the growth ability of twelve algae-microbial consortia (AC) isolated from organic wastes when a pig slurry-derived wastewater (NFP) was used as growth substrate in autotrophic cultivation. Nutrient recovery, biochemical composition, fatty acid and amino acid profiles of algae consortia were evaluated and compared. Three algae-microbial consortia, i.e., a Chlorella-dominated consortium (AC_1), a Tetradesmus and Synechocystis co-dominated consortium (AC_10), and a Chlorella and Tetradesmus co-dominated consortium (AC_12) were found to have the best growth rates (µ of 0.55 ± 0.04, 0.52 ± 0.06, and 0.58 ± 0.03 d−1, respectively), which made them good candidates for further applications. The ACs showed high carbohydrates and lipid contents but low contents of both proteins and essential amino acids, probably because of the low N concentration of NFP. AC_1 and AC_12 showed optimal ω6:ω3 ratios of 3.1 and 3.6, which make them interesting from a nutritional point of view.

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Section: Biochemical Composition Of Ac Biomassesmentioning

confidence: 60%

Growth Performance, Biochemical Composition and Nutrient Recovery Ability of Twelve Microalgae Consortia Isolated from Various Local Organic Wastes Grown on Nano-Filtered Pig Slurry

Dell’Orto

Scaglia

et al. 2022

Molecules

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“… Charcoal filtration, slow feed sand filtration, addition of ammonium chloride Outdoor growth in raceway ponds (150 L) Two phases (Batch Semicontinuous). [ 53 ] Pig manure anaerobic digestate effluent C. vulgaris FACHB-31 Filtration, pretreatment with indigenous bacteria 500 mL flasks [ 54 ] Anaerobically digested piggery effluent (ADPE) Chlorella sp. and Scenedesmus sp Charcoal filtration, slow feed sand filtration 11 m 2 paddle wheel driven raceway pond [ 55 ] Anaerobic piggery digestate Desmodesmus sp .…”

Section: Resultsmentioning

confidence: 99%

State of microalgae-based swine manure digestate treatment: An overview

Sichel-Crespo

Ortiz-Montoya

Caicedo-Ortega

et al. 2022

Heliyon

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“…The reducing sugar content of culture media were determined by DNS method [ 33 ]. The total nitrogen (TN), inorganic carbon (IC) and total organic carbon (TOC) content of culture media were analyzed using a multi N/C 3100 analyzer (Analytik Jena AG, Jena, Germany) [ 34 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of C/N ratio on the growth and protein accumulation of heterotrophic Chlorella in broken rice hydrolysate

Cai

Zhai

Fang³

et al. 2022

Biotechnol Biofuels

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Background Microalgae protein is considered as a sustainable alternative to animal protein in the future. Using waste for microalgal culture can upgrade low-value raw materials into high-value products, helping to offset the cost of microalgal protein production. In this study we explored the feasibility of using microalgae heterotrophic fermentation to convert broken rice hydrolysate (BRH) into protein. Results The results showed that the increase of BRH supplemental ratio was beneficial to the increase of biomass production but not beneficial to the increase of intracellular protein content. To further improve protein production, the effect of C/N ratio on intracellular protein accumulation was studied. It was found that low C/N ratio was beneficial to the synthesis of glutamate in microalgae cells, which in turn promoted the anabolism of other amino acids and further the protein. When the C/N ratio was 12:1, the biomass productivity and protein content could reach a higher level, which were 0.90 g/L/day and 61.56%, respectively. The obtained Chlorella vulgaris biomass was rich in essential amino acids (41.80%), the essential amino acid index was as high as 89.07, and the lysine content could reach up to 4.05 g/100 g. Conclusions This study provides a theoretical basis and guidance for using Chlorella vulgaris as an industrial fermentation platform to convert broken rice into products with high nutritional value.

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Enhancement of nutrients removal and biomass accumulation of Chlorella vulgaris in pig manure anaerobic digestate effluent by the pretreatment of indigenous bacteria

Cited by 48 publications

References 38 publications

Growth Performance, Biochemical Composition and Nutrient Recovery Ability of Twelve Microalgae Consortia Isolated from Various Local Organic Wastes Grown on Nano-Filtered Pig Slurry

Growth Performance, Biochemical Composition and Nutrient Recovery Ability of Twelve Microalgae Consortia Isolated from Various Local Organic Wastes Grown on Nano-Filtered Pig Slurry

State of microalgae-based swine manure digestate treatment: An overview

Effects of C/N ratio on the growth and protein accumulation of heterotrophic Chlorella in broken rice hydrolysate

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