Algal bioethanol production technology: A trend towards sustainable development

Bibi, Riaz; Ahmad, Zulfiqar; Imran, Muhammad Ali; Hussain, Sabir; Ditta, Allah; Shahid, Mohammad; Khalid, Azeem

doi:10.1016/j.rser.2016.12.126

Cited by 129 publications

(46 citation statements)

References 100 publications

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“…Algae are capable of using large amounts of carbon dioxide, resulting in the production of biomass. The biomass production of algae is five to ten times higher than that of plants due to differences in photosynthesis . Carbohydrates in algae are generally cellulose or starch without lignin – lignin being a physical obstacle to enzymatic hydrolysis .…”

Section: Introductionmentioning

confidence: 99%

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Synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates

Shokrkar

Ebrahimi

2018

Biofuels Bioprod Bioref

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This study aimed to evaluate the synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates for bioethanol production. The effect of β‐glucosidase on the hydrolysis of algal cellulose, and the comparison between the effect of the addition of α‐amylase and amyloglucosidase separately or together on the hydrolysis of algal starch, have not been described previously. Results showed that β‐glucosidases promoted the enzymatic hydrolysis of algal cellulose as a result of the increase in the glucose production rate and the decrease in the inhibition by cellobiose. It was also beneficial to carry out the hydrolysis of algal starch using the mixture of α‐amylase and amyloglucosidase. The results obtained revealed that, in enzymatic hydrolysis experiments, simultaneous treatment with Celluclast 1.5 L, β‐glucosidase, α‐amylase, and amyloglucosidase was a promising strategy to reduce the hydrolysis time required to achieve a higher yield of glucose. Subsequently, fermentation of enzymatic hydrolysates of microalgae using Saccharomyces cerevisiae showed a yield of 0.126 g ethanol / g dried algae. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Introductionmentioning

confidence: 99%

“…Carbohydrates in algae are generally cellulose or starch without lignin – lignin being a physical obstacle to enzymatic hydrolysis . The treatment of algae is therefore easy compared to lignocellulosic materials …”

Section: Introductionmentioning

confidence: 99%

Synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates

Shokrkar

Ebrahimi

2018

Biofuels Bioprod Bioref

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“…Still, it is merely meet the current demand, and there are many conflicts and debates about their sustainability due to the depletion of water sources and the use of arable land to produce biomass for bioethanol production. 4,5 Although lignocellulosic biomass is an alternative source for first generation bioethanol feedstocks, it requires intensive labor and a high capital cost for processing. 5 Algae are considered as third generation biofuel feedstock and capable of generating more organic carbon per hectare than terrestrial plants.…”

Section: Introductionmentioning

confidence: 99%

“…4,5 Although lignocellulosic biomass is an alternative source for first generation bioethanol feedstocks, it requires intensive labor and a high capital cost for processing. 5 Algae are considered as third generation biofuel feedstock and capable of generating more organic carbon per hectare than terrestrial plants. Except Asia, algae avoid the food versus fuel argument since they are not a major food source.…”

Section: Introductionmentioning

confidence: 99%

“…6 Biomass production of algae is 5-10-times greater than that of land-based plants due to their more photosynthetic efficiency. 5 Algae grow rapidly and can be easily grown in various aquatic environments such as fresh water, saline water or municipal waste water. Microalgae don't need structural biopolymers such as hemicellulose and lignin which are necessary for terrestrial plants.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Chemical Pre-treatments on Bioethanol Production from Chlorella minutissima

Sert

İnan

Özçimen

2018

ACSi

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In recent years, algal bioethanol production comes into prominence as a trend towards sustainable development. Due to being sustainable energy source and environmental friendly, bioethanol production from algae is becoming increasingly popular all over the world. However, yield of bioethanol production from algae is lower than first generation feedstock's currently, and needs to be improved. In order to increase bioethanol yield, pre-treatments should be performed as cell disruption process on algal biomass. For this reason, researchers investigate the most appropriate pre-treatment method and its parameters for high yield bioethanol production from algae. In this study, cultivated Chlorella minutissima was utilized for bioethanol production. Effects of pre-treatment method (dilute acid and alkaline), chemical concentration, pre-treatment temperature and pre-treatment time on bioethanol yield were investigated. It was found that, the highest bioethanol yield was obtained as 18.52% with acid pre-treatment at pre-treatment temperature of 100 °C and pre-treatment time of 60 minutes.

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Microalgal Biomass as an Alternative Source of Sugars for the Production of Bioethanol

Smachetti

Rizza

Coronel

et al. 2018

Principles and Applications of Fermentation Technology

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Algal bioethanol production technology: A trend towards sustainable development

Cited by 129 publications

References 100 publications

Synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates

Synergism of cellulases and amylolytic enzymes in the hydrolysis of microalgal carbohydrates

Effect of Chemical Pre-treatments on Bioethanol Production from Chlorella minutissima

Microalgal Biomass as an Alternative Source of Sugars for the Production of Bioethanol

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