Comparison of agarophytes (Gelidium, Gracilaria, and Gracilariopsis) as potential resources for bioethanol production

Meinita, Maria Dyah Nur; Marhaeni, Bintang; Winanto, Tjahjo; Jeong, Gwi‐Taek; Khan, Mohammed Nurul Absar; Hong, Yong‐Ki

doi:10.1007/s10811-013-0041-4

Cited by 83 publications

(37 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, the ethanol production yield from the fermentation of untreated biomass was low 0.03 g·g −1 dry matter [49]. Red algae have also been fermented, following acid hydrolysis to convert agar, the main component, to fermentable sugars, but rates of conversion to ethanol were low, yielding only 45% of the theoretical maximum [146]. Ethanol yields from the fermentation of seaweed are typically between 0.08 and 0.12 kg·kg −1 dry seaweed varying with the alga and method of pre-treatment and saccharification [19].…”

Section: Bioethanolmentioning

confidence: 99%

Macroalgae-Derived Biofuel: A Review of Methods of Energy Extraction from Seaweed Biomass

et al. 2014

View full text Add to dashboard Cite

Abstract:The potential of algal biomass as a source of liquid and gaseous biofuels is a highly topical theme, but as yet there is no successful economically viable commercial system producing biofuel. However, the majority of the research has focused on producing fuels from microalgae rather than from macroalgae. This article briefly reviews the methods by which useful energy may be extracted from macroalgae biomass including: direct combustion, pyrolysis, gasification, trans-esterification to biodiesel, hydrothermal liquefaction, fermentation to bioethanol, fermentation to biobutanol and anaerobic digestion, and explores technical and engineering difficulties that remain to be resolved.

show abstract

Section: Bioethanolmentioning

confidence: 99%

Macroalgae-Derived Biofuel: A Review of Methods of Energy Extraction from Seaweed Biomass

et al. 2014

View full text Add to dashboard Cite

show abstract

“…(Source: European Algae Biomass Association-EABA). The competition of food versus fuel for land and grains put forth the sea weeds, microalgae (Dunaliella; Botryococcus braunii (Bb), a green, pyramid shaped planktonic microalga; Chlorella, a genus of single-cell green algae, belonging to the phylum Chlorophyta; Gracilaria, a genus of red algae (Rhodophyta); Pleurochrysis carterae, a unicellular coccolithophorid alga) and macro algae Sargassum that belongs to genus of brown algae (class Phaeophyceae) [34][35][36][37][38] as interesting candidates for biofuel productions and they constitute third generation biofuels. The photosynthetic microalgae fix CO 2 in the presence of water and light into biomass.…”

Section: Third Generation Biofuels From Seaweedsmentioning

confidence: 99%

Bioengineering strategies on catalysis for the effective production of renewable and sustainable energy

Harish

Ramaiah

Uppuluri

2015

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

“…Dilute acid hydrolysis (or pretreatment) is considered the most economical and time-saving form of hydrolysis currently available for algal biomass [11]. Acid concentrations as low as 0.006 M along with a 15 min reaction time have been reported with appreciable reducing sugar yields [12,13]. Nonetheless, enzymatic hydrolysis is considered the most efficient form of hydrolysis for algal biomass available, despite concerns in various studies over the high cost of enzymes and longer reaction times [14,15].…”

Section: Introductionmentioning

confidence: 99%

Cellulase and acid-catalysed hydrolysis of Ulva fasciata, Hydropuntia dentata and Sargassum vulgare for bioethanol production

2019

View full text Add to dashboard Cite

Hydrolysis in bioethanol production is one of the most limiting stages in the entire production process since it is the stage where the sugars to be converted to ethanol are obtained. Ulva fasciata, Hydropuntia dentata and Sargassum vulgare seaweeds were examined in this study to determine the most efficient pretreatment, optimal hydrolysis conditions and predictive models with dilute sulphuric acid and cellulase enzyme as catalysts. Dilute acid pretreatment was found to be the most efficient in maximizing the catalytic efficiency of enzymes applied on all the three selected seaweeds. Ulva fasciata, however, was found to be efficiently hydrolysable without any form of pretreatment. The study also found dilute sulphuric acid hydrolysis to be less effective since it released up to 52.4% of reducing sugars in the seaweeds as compared to the 90.9% from hydrolysis with cellulase enzyme. Also, the most efficient regression model between the seaweed species studied was obtained for the enzymatic hydrolysis of U. fasciata with a correlation coefficient of 99.4%. This indicates a high precision in predicting the reducing sugar yields from the species within boundary conditions. Overall, the optimal enzymatic hydrolysis process was influenced most by substrate concentration for all three seaweeds examined.

show abstract

Comparison of agarophytes (Gelidium, Gracilaria, and Gracilariopsis) as potential resources for bioethanol production

Cited by 83 publications

References 23 publications

Macroalgae-Derived Biofuel: A Review of Methods of Energy Extraction from Seaweed Biomass

Macroalgae-Derived Biofuel: A Review of Methods of Energy Extraction from Seaweed Biomass

Bioengineering strategies on catalysis for the effective production of renewable and sustainable energy

Cellulase and acid-catalysed hydrolysis of Ulva fasciata, Hydropuntia dentata and Sargassum vulgare for bioethanol production

Contact Info

Product

Resources

About