Growth of three microalgae strains and nutrient removal from an agro-zootechnical digestate

Franchino, Marta; Comino, Elena; Bona, Francesca; Riggio, Vincenzo Andrea

doi:10.1016/j.chemosphere.2013.04.023

Cited by 163 publications

(77 citation statements)

References 23 publications

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“…It has recently been characterized from a chemical and ecotoxicological point of view (Tigini et al, 2016 Chlorella vulgaris CCAP 211/11b (Culture Collection of Algae and Protozoa, Argyll, UK) was selected for this study in view of our previous experiences with digestates (Franchino et al, 2013). Firstly, C. vulgaris was pre-grown in 250 mL Erlenmeyer flasks containing 100 mL of Removal efficiency (RE) was estimated by dividing the difference between the initial nutrient concentration and that on day n (Ci-Cn) by Ci, and then multiplied by 100, while the Elimination Capacity (EC) by dividing the difference between the nutrient concentration of two subsequent samples (Cn-1 and Cn) by the time elapsed between them.…”

Section: Microalgae Growth and Nutrient Removal In Diluted Digestatementioning

confidence: 99%

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Microalgae treatment removes nutrients and reduces ecotoxicity of diluted piggery digestate

Franchino

Tigini

Varese

et al. 2016

Science of The Total Environment

Self Cite

118

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Liquid digestate is considered as an important by-product of anaerobic digestion of agriculture wastes. Currently, it is very often directly spread on local agricultural land. Yet recently concerns on its environmental risk of this processing has begun to rise. On the other hand, investigations on the effectiveness of microalgae for wastewater treatment have started to consider also this complex matrix. In this study, we cultured the green alga Chlorella vulgaris in diluted digestate coming from the anaerobic digestion of pig slurry and corn, with the aim to significantly reduce its toxicity and its very high nutrient concentration.For this purpose, a battery of toxicity tests composed of four acute and two chronic bioassays was applied after the alga cultivation. Results were compared with those obtained in the initial characterization of the digestate. Results show that highly diluted piggery digestate can be a suitable medium for culturing microalgae, as we obtained a high removal efficiency (> 90%) for ammonia, total nitrogen and phosphate, though after a few days phosphorus limitation occurred. Toxicity was significantly reduced for all the organisms tested. Possible solutions for optimizing this approach avoiding high dilution rates are discussed.

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Section: Microalgae Growth and Nutrient Removal In Diluted Digestatementioning

confidence: 99%

“…Among others, the green alga Chlorella vulgaris has shown a good potential for nutrient removal from various types of digestate: dairy manure (Wang et al 2010); cattle slurry and raw cheese whey (Franchino et al, 2013); municipal WWTP (Cho et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Microalgae treatment removes nutrients and reduces ecotoxicity of diluted piggery digestate

Franchino

Tigini

Varese

et al. 2016

Science of The Total Environment

Self Cite

118

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“…Potentials of the microalgae cultivated in municipal wastewater effluent in batch and continuous mode have been reviewed. Many previous studies have reported the treatment of industrial, municipal and agricultural wastewater by micro algal culture systems (Franchino et al, 2013;Ji et al, 2013;Lau et al, 1995;Lau et al, 1998;McGinn et al, 2012;Singh et al, 2012;Srinivasan & Subramaniam, 2009;Talbot & delaNoue, 1993;Tam & Wong, 1989;Williams, 2003). Such type of schemes has significant applications in the reduction of nutrient release in associated streams by assimilatory uptake of nitrogen that in turn decreases the rate of eutrophication of receiving streams and also provides oxygen for nitrification and biological organic matter oxidation (Kothari et al, 2013;Mata et al, 2010;Park et al, 2010;Wolanski et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of autotrophic and mixotrophic regimen Chlorella pyrenoidosa cells in various wastes water for its biochemical composition and biomass production

Dhull

Soni²,

Rahi

et al. 2014

Preprint

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The present study investigates the possibility of integrating an existing industrial large scale biomass production with the treatment of waste water in which a mixture of organic and inorganic rich pollutants was used as a medium. This study suggests that the replacement of a defined medium with a complete mixotrophic medium gives a significant statistical difference in terms of growth parameters i.e. biomass production and specific growth rate.The green microalga C. pyrenoidosa was cultivated under different mixotrophic conditions for evaluation of biomass production. Inorganic defined fog's medium supplemented, with raw dairy wastewater led to 1.37g/L biomass production in comparison to 1.2g/L obtained with pure glucose revealing 14.16% increase. The study also involves the supplementation of raw dairy wastewater as an organic carbon source in an inorganic medium comprising municipal treated water and reverse osmosis (RO) treated wastewater and attained 2.4g/L and 1.6g/L of biomass respectively, as compared to 0.3g/L and 0.16g/L obtained in the wastewaters alone revealing 700% and 900% increase respectively. Mixotrophic regimen cells as analyzed by a 2D Fourier transform infrared (FTIR) spectroscopy for its biochemical content revealed that fog's blended raw dairy waste (RDW) regimen cells had maximum

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“…from wastewater seems to be a promising option (Ali et al 2013;Franchino et al 2013;Richards and Mullins 2013;Sood et al 2012). Oswald and Gotaas (1955) are the pioneers in this area, especially in terms of illustrating the potential of algae in the wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Phycoremediation of wastewaters: a synergistic approach using microalgae for bioremediation and biomass generation

Renuka

Sood

Prasanna

et al. 2014

Int. J. Environ. Sci. Technol.

167

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Discharge of untreated domestic and industrial wastewater into aquatic bodies is posing a serious eutrophication threat, leading to a slow degradation of the water resources. A number of physical, chemical and biological methods have been developed for the treatment of wastewaters; among these, the use of microalgae is considered as a more eco-friendly and economical approaches. Microalgae are versatile organisms which perform multiple roles in the environment-bioremediation of wastewater, gleaning of excess nutrients and in turn, generate valuable biomass which finds applications in the food, biofuel and pharmaceutical industries. They are currently being utilized to reduce the high nutrient load (especially N and P) from wastewaters, which fulfill the growth requirements of microalgae, making it a suitable cultivation medium for biomass production. The present review represents a comprehensive compilation of reports on microalgal diversity of wastewaters, followed by a critical overview of their utilization, suitability and potential in bioremediation vis-a-vis biomass production. This review also emphasizes the superiority of polyalgal and consortial approaches in wastewater treatment, as compared to the use of unialgal inocula, besides providing useful pointers for future research needs in this area.

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Growth of three microalgae strains and nutrient removal from an agro-zootechnical digestate

Cited by 163 publications

References 23 publications

Microalgae treatment removes nutrients and reduces ecotoxicity of diluted piggery digestate

Microalgae treatment removes nutrients and reduces ecotoxicity of diluted piggery digestate

Evaluation of autotrophic and mixotrophic regimen Chlorella pyrenoidosa cells in various wastes water for its biochemical composition and biomass production

Phycoremediation of wastewaters: a synergistic approach using microalgae for bioremediation and biomass generation

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