An integrated renewable energy park approach for algal biofuel production in United States

Subhadra, Bobban; Edwards, Mark

doi:10.1016/j.enpol.2010.04.036

Cited by 129 publications

(38 citation statements)

References 34 publications

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“…Unfortunately, there will not be enough biomass available when plants are harvested only from areas which could not be used for food and feed production. 4,5 One of the possibilities to avoid ethical conflicts and dodge a disadvantageous development on the resources market is the production of biomass by photo-autotrophic microorganisms, such as algae and cyanobacteria. Closed photobioreactor types may be installed on building fronts and roofs or may cover traffic areas -if the local climate allows their operation.…”

Section: Introductionmentioning

confidence: 99%

Photo-autotrophic Production of Poly(hydroxyalkanoates) in Cyanobacteria

Drosg¹,

Fritz²,

Gattermayr³

et al. 2015

Chem.Biochem.Eng.Q.

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In the last two decades, poly(hydroxyalkanoates) (PHA) were solely produced using heterotrophic bacteria in aerobic cultivation. With respect to the great potential (500 Mt yr -1 ) of raw industrial CO 2 streams and even greater potential of flue gases, the focus on photo-autotrophic biotechnological processes is increasing steadily. Primarily, PHA-gene transfer from heterotrophic bacteria into algae and plant cells was attempted, with the intention to combine the known biosynthesis pathway with autotrophic cultivation. The natural occurrence of PHA in cyanobacteria is known at least since 1966. However, cyanobacteria were never considered for commercial production because the PHA amount based on cell mass and based on volumetric productivity is generally very low. Therefore, strain improvements were suggested, either by gene amplification or by suppression of biochemical pathways competing for the cell's acetate pool. In the late 1990s, the success of genetic modification was confirmed experimentally, elevating the cyanobacteria cell's PHA content. With additional optimization, PHB amounts up to 50 % w/w of biomass dry matter or up to about 2.4 g L -1 bioreactor volume could be produced within 11 days. Considering the land use for agriculture and the competition for plant biomass between food, feed, fuel and energy production, the binding of CO 2 in a biotechnological process using photo-autotrophic microorganisms may become a promising option.

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Section: Introductionmentioning

confidence: 99%

Photo-autotrophic Production of Poly(hydroxyalkanoates) in Cyanobacteria

Drosg¹,

Fritz²,

Gattermayr³

et al. 2015

Chem.Biochem.Eng.Q.

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“…As for third generation of biofuel, microalgae with short harvesting cycles and can produce more oil yields (15-300 times) than traditional crops on area bases is thought as a new alternative to biofuel production history [9]. However, scaling up the production of biofuel from microalgae can face unsustainable demands on energy, water (1 L biofuel: 3650 L water), and nutrients (nitrogen, phosphorus, and CO 2 ) required for cultivating this particular feedstock [16]. Thus, this option is not currently feasible.…”

Section: Introductionmentioning

confidence: 99%

Subcritical water hydrolysis of durian seeds waste for bioethanol production

et al. 2015

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The feasibility of bioethanol production using durian seed waste was investigated in this study. The effects of hydrolysis parameters (temperature, time, pressure and solid to water ratio) on the yields of reducing sugars and bioethanol were also examined. Central composite design was used to determine the optimum conditions of both reducing sugars yields obtained from hydrolysis stage and ethanol from reducing sugars fermentation. The optimized values for subcritical water process of durian seeds to produce reducing sugars were achieved at temperature of 139.8°C; solid to water ratio of 1:30; pressure of 30 bar; and reaction time of 3.58 h with 32.37 % yield of reducing sugars. The fermentation of 20 g L -1 reducing sugars for 72 h gave the highest ethanol concentration, i.e., 9.85 g L -1 .

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“…In this context, the harvesting cycle of microalgae cells has a very short period (1 to 10 days) compared with the other feedstock (harvesting time once or twice per year), and thus can provide enough supplies to meet demands for the ethanol production (Schenk et al 2008). Additionally, algae have the photon conversion ability and can synthesize and accumulate large amounts of carbohydrate biomass for the production of bioethanol from the cheapest source of raw materials (Subhadra and Edwards 2010). Hon-Nami (2006) has described the fermentation of Chlamydomonas perigranulata to produce ethanol, butanediol, acetic acid, and CO 2 , thus showing the multiutility of the algal biomass.…”

Section: Composition and Processing Of Microalgal Biomass To Biofuelmentioning

confidence: 99%

Potential of Micro and Macro Algae for Biofuel Production: A Brief Review

Rajkumar¹,

Yaakob²,

Takriff³

2013

BioResources

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The world seems to be raising its energy needs owing to an expanding population and people's desire for higher living standards. Diversification biofuel sources have become an important energy issue in recent times. Among the various resources, algal biomass has received much attention in the recent years due to its relatively high growth rate, its vast potential to reduce greenhouse gas (GHG) emissions and climate change, and their ability to store high amounts of lipids and carbohydrates. These versatile organisms can also be used for the production of biofuel. In this review, sustainability and the viability of algae as an up-coming biofuel feedstock have been discussed. Additionally, this review offers an overview of the status of biofuel production through algal biomass and progress made so far in this area.

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An integrated renewable energy park approach for algal biofuel production in United States

Cited by 129 publications

References 34 publications

Photo-autotrophic Production of Poly(hydroxyalkanoates) in Cyanobacteria

Photo-autotrophic Production of Poly(hydroxyalkanoates) in Cyanobacteria

Subcritical water hydrolysis of durian seeds waste for bioethanol production

Potential of Micro and Macro Algae for Biofuel Production: A Brief Review

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