Microalgal cultivation with waste streams and metabolic constraints to triacylglycerides accumulation for biofuel production

Ge, Shijian; Champagne, Pascale; Plaxton, William C.; Leite, Gustavo B.; Marazzi, Francesca

doi:10.1002/bbb.1726

Cited by 43 publications

(17 citation statements)

References 164 publications

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“…Many toxicity studies have shown that C. vulgaris is usually a preferred test organism, since it has a widespread distribution and it can be found in freshwater ecosystems naturally In addition to being reported as one of the eight most tolerant genera, studies have also shown that rapid growth, efficient organic and nutrient uptake from wastewater, reduced toxicity from wastewater (wastewater treatment), and the dominance of wastewater worldwide, including temperate climates, made Chlorella sp. as the model species …”

Section: Introductionmentioning

confidence: 99%

Assessments of Algal Toxicity and PBT Behaviour of Pesticides with No Eco‐toxicological Data: Predictive Ability of QSA/(T)R Models

Gökçe

Saçan

2019

Molecular Informatics

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This paper is dedicated to Prof. Paola Gramatica on the occasion of her retirement.Abstract: In the present study, the effect of eight pesticides with no ecotoxicological data on the growth rate of Chlorella vulgaris was measured. The selected pesticides are acetochlor, acetamiprid, boscalid diphenamid, gibberellic acid, ioxynil, diclofop and 2,4,5-T. The algal toxicity (IC 50 ) of boscalid could not be determined within its solubility limit. Acetamiprid, diphenamid and gibberellic acid revealed IC 50 values > 100 mg/L. Among the others, the order of 96-h IC 50 of pesticides was found as acetochlor > ioxynil > diclofop > 2,4,5-T. The IC 50 values were also predicted by using four Quantitative Structure-Activity/(Toxicity) Relationship (QSA/ (T)R) models selected from the literature. The predictions of the models provided by QSARINS-Chem module of QSARINS as well as those obtained in our previous studies were compared with the results of experimental algal toxicity tests that were performed in our laboratory. The QSTR model generated for the toxicity of diverse chemicals to freshwater algae was able to correctly predict the toxicity order of the pesticides tested in the present study, confirming the utility of the QSA/(T)R approach. Additionally, Persistence, Bioaccumulation and Toxicity (PBT) Index model provided via the software QSARINS was employed and boscalid and diclofop were found to be PBT chemicals based on the PBT model. The present study will be very helpful when a more holistic approach applied to understand the fate of these chemicals in the environment.

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Section: Introductionmentioning

confidence: 99%

Assessments of Algal Toxicity and PBT Behaviour of Pesticides with No Eco‐toxicological Data: Predictive Ability of QSA/(T)R Models

Gökçe

Saçan

2019

Molecular Informatics

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“…The topics of microalgal cultivation and harvesting do not fall under the purview of this review, as they have been extensively reviewed elsewhere . There are, however, important considerations to bear in mind related to microalgal strain cultivation before discussing lipid extraction approaches.…”

Section: Introductionmentioning

confidence: 99%

“…Unlike a chemical feedstock that is unaffected by its origin, the extraction of microalgal lipids is influenced by biological variables, such as species and cultivation conditions. The choice of microalgal species and growth conditions will also have a large impact on the final lipid content . For example, nitrogen deprivation during growth can increase the lipid content of microalgae at the expense of reduced biomass productivity .…”

Section: Introductionmentioning

confidence: 99%

“…The topics of microalgal cultivation and harvesting do not fall under the purview of this review, as they have been extensively reviewed elsewhere. [3][4][5][6][7][8] There are, however, important considerations to bear in mind related to microalgal strain cultivation before discussing lipid extraction approaches. Unlike a chemical feedstock that is unaffected by its origin, the extraction of microalgal lipids is influenced by biological variables, such as species and cultivation conditions.…”

mentioning

confidence: 99%

“…The choice of microalgal species and growth conditions will also have a large impact on the final lipid content. 3,5,9 For example, nitrogen deprivation during growth can increase the lipid content of microalgae at the expense of reduced biomass productivity. 3 Nitrogen limitation will also increase the resistance of the microalgae to cell disruption through thickening of the cell wall triggered by cellular stress.…”

mentioning

confidence: 99%

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Advances in microalgal lipid extraction for biofuel production: a review

Harris

Viner

Champagne

et al. 2018

Biofuels Bioprod Bioref

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Algal biomass is an attractive feedstock for sustainable biofuel production because of its high growth rate and the fact that it does not compete with food crops. This review examines progress made in the processing and extraction of microalgal lipids as feedstocks for algae‐derived biofuels. The discussion focuses on lipid extraction processes but also mentions drying, cell disruption, and transesterification processes because of their potential effect on the extraction process, and because of the possibility of performing them simultaneously with extraction. Some of the common themes discussed include the benefits of utilizing wet microalgal biomass, combining process steps (process intensification), and the importance of considering the entire life cycle when assessing the ‘greenness’ of a technology. Lipid extraction technologies will need to be improved for microalgal biofuels to compete effectively with fossil fuels, particularly through the development of energy‐efficient extraction methods and the adaptation of these methods for large‐scale production. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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Feasibility of a microalgal wastewater treatment for the removal of nutrients under non‐sterile conditions and carbon limitation

Ramos¹,

Regan²,

McGinn

et al. 2019

Can J Chem Eng

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Microalgal treatment of municipal wastewater has been discussed as a novel strategy for the removal of excess nutrients and metals. Additionally, a number of products can be obtained from the resulting microalgal biomass, including energy products that can be utilized within the treatment plant. However, the effectiveness of these microalgal systems can be significantly affected by the natural biota, which could consequently impact the quality of the wastewater effluent. This study evaluated the performance of two microalgal species in the removal of nutrients from non-sterile, highly concentrated synthetic wastewater. The results showed that monocultures of Scenedesmus sp. AMDD and Chlorella sorokiniana could remove up to 60 % NH 4 þ , and 44 and 35 % PO 4 3-, respectively, in a semi-continuous cultivation mode without negatively affecting effluent quality.

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Microalgal cultivation with waste streams and metabolic constraints to triacylglycerides accumulation for biofuel production

Cited by 43 publications

References 164 publications

Assessments of Algal Toxicity and PBT Behaviour of Pesticides with No Eco‐toxicological Data: Predictive Ability of QSA/(T)R Models

Assessments of Algal Toxicity and PBT Behaviour of Pesticides with No Eco‐toxicological Data: Predictive Ability of QSA/(T)R Models

Advances in microalgal lipid extraction for biofuel production: a review

Feasibility of a microalgal wastewater treatment for the removal of nutrients under non‐sterile conditions and carbon limitation

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