Evaluation of the Potential of <i>Chlorella vulgaris</i> for Bioethanol Production

Kumar, Vijay Bhooshan; Pulidindi, Indra Neel; Kinel-Tahan, Yael; Yehoshua, Yaron; Gedanken, Aharon

doi:10.1021/acs.energyfuels.6b00253

Cited by 28 publications

(9 citation statements)

References 33 publications

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“…TIB-A01 species was capable of obtaining a sugar concentration of 12 wt% (v/v) and producing an ethanol yield of 0.47 g/g of sugars. Thus, Chlorella microalga was selected because of its capability with high proton efficiency to synthesise and convert a large quantity of carbohydrates into bioethanol production [9].…”

Section: Introductionmentioning

confidence: 99%

Effects of acids pre-treatment on the microbial fermentation process for bioethanol production from microalgae

Phwan

Chew

Sebayang

et al. 2019

Biotechnol Biofuels

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Background Microalgae are one of the promising feedstock that consists of high carbohydrate content which can be converted into bioethanol. Pre-treatment is one of the critical steps required to release fermentable sugars to be used in the microbial fermentation process. In this study, the reducing sugar concentration of Chlorella species was investigated by pre-treating the biomass with dilute sulfuric acid and acetic acid at different concentrations 1%, 3%, 5%, 7%, and 9% (v/v). Results 3,5-Dinitrosalicylic acid (DNS) method, FTIR, and GC-FID were employed to evaluate the reducing sugar concentration, functional groups of alcohol bonds and concentration of bioethanol, respectively. The two-way ANOVA results ( p < 0.05) indicated that there was a significant difference in the concentration and type of acids towards bioethanol production. The highest bioethanol yield obtained was 0.28 g ethanol/g microalgae which was found in microalgae sample pre-treated with 5% (v/v) sulfuric acid while 0.23 g ethanol/g microalgal biomass was presented in microalgae sample pre-treated with 5% (v/v) acetic acid. Conclusion The application of acid pre-treatment on microalgae for bioethanol production will contribute to higher effectiveness and lower energy consumption compared to other pre-treatment methods. The findings from this study are essential for the commercial production of bioethanol from microalgae.

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Section: Introductionmentioning

confidence: 99%

Effects of acids pre-treatment on the microbial fermentation process for bioethanol production from microalgae

Phwan

Chew

Sebayang

et al. 2019

Biotechnol Biofuels

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“…Boubabidi et al (2019) reported that the cell immobilization is affected by several factors including physiological state of cells, surface properties and adsorbents, environmental conditions, medium composition, and the pH. Dinesh Kumar et al (2016) investigated the nutrients removal from a shrimp farm wastewater using biofilter filled with a marine microalgae Picochlorum maculatum. The P. maculatum cells have initially been immobilized in round alginate blocks.…”

Section: Immobilized Cellmentioning

confidence: 99%

Algal biomass dual roles in phycoremediation of wastewater and production of bioenergy and value-added products

Razaviarani

Arab

Lerdwanawattana

et al. 2022

Int. J. Environ. Sci. Technol.

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Algal biomass has been gaining attention over the last decades as it is versatile and can be used in different industries, such as wastewater treatment and bioenergy industries. Microalgae are mixotrophic microorganisms that have potential to utilize nitrogen and phosphate (nutrients) and remove organic matters from wastewater streams. Phycoremediation is an intriguing and cost-efficient technique to simultaneously remove heavy metals from wastewater while removing nutrients and organic matters. The cultivated and produced algal biomass can be a promising candidate and a sustainable feedstock to produce biofuels (e.g., biodiesel, bio-alcohol, and bio-oil) and value-added products such as biochar, glycerol, functional food, and pigments. The algae suspended cultivation systems, WSP and HRAP, are efficient methods for the wastewater treatment in shallow ponds with no mechanical aeration and less required energy consumption, but when a short HRT and minimum evaporation losses are key points in the algal cultivation the PBRs are recommended. It was reported that biosorption and bioaccumulation are the two promising techniques of phycoremediation. Studies showed that among the current processes of algal biomass conversion to biofuels, transesterification of algal lipids and pyrolysis of algal biomass were found to be the most efficient techniques. This review paper investigates the applications of algal biomass in the phycoremediation of wastewater, productions of bioenergy and value-added products by reviewing articles mainly published over the last five years. Graphical abstract

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“…The algal biomass contains high quantities of polysaccharides, which are in the form of starch, sugar, and cellulose. Therefore, algal biomass is considered as a suitable feedstock for bioethanol production …”

Section: Biochemical Conversionmentioning

confidence: 99%

“…Therefore, algal biomass is considered as a suitable feedstock for bioethanol production. 60 Onay 61 cultured microalgae biomass (Hindakia tetrachotoma) using municipal wastewater to study the different saccharification strategies. For microalgae cultivation, 1 L of a flat airlift photo-bioreactor is designed, and the concentration of growth media is varied from 25% to 100% by dilute distilled water.…”

Section: Biochemical Conversionmentioning

confidence: 99%

A Mini Review of Biochemical Conversion of Algal Biorefinery

et al. 2021

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Algal biomass is rich in essential components such as proteins, carbohydrates, and lipids, which are considered as a potential feedstock for algaebased fuel and chemical production. The commercial application of algae-based fuel production is a challenging task because algal cultivation and harvesting demand high energy and cost. It is a common bottleneck problem in algae processed for fuel or chemical production at the pilot scale. The execution of the concept of integrated algal biorefinery has the possibility to reduce the demand for energy and costs. It is comparatively economical to conventional methods in terms of the recovery of various value-added bioproducts including biopolymers, biochemicals, biofertilizers, and biofuels. In addition, this approach will decrease the overall production costs and aid in making an algal-based green economy viable. This mini review aims to provide certain information regarding development of and updates on cost-effective integrated biorefinery of algal-based bioproducts recovery and its potential application. In connection to this, life cycle assessment and techno-economic aspects of integrated algal biorefinery are discussed. Finally, present challenges and future research directions for integrated algal biorefinery are outlined.

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Evaluation of the Potential of Chlorella vulgaris for Bioethanol Production

Cited by 28 publications

References 33 publications

Effects of acids pre-treatment on the microbial fermentation process for bioethanol production from microalgae

Effects of acids pre-treatment on the microbial fermentation process for bioethanol production from microalgae

Algal biomass dual roles in phycoremediation of wastewater and production of bioenergy and value-added products

A Mini Review of Biochemical Conversion of Algal Biorefinery

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