Economics of Bio-Hydrogen Production

Sathyaprakasan, Parvathy; Kannan, Geetha

doi:10.7763/ijesd.2015.v6.617

Cited by 38 publications

(7 citation statements)

References 9 publications

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“…Another study (Melis and Happe, 2001), which assumes biohydrogen is produced 100% by photosynthesis, found that with a plant running at half capacity and an estimated production rate of 80 kg biohydrogen acre −1 day −1 , biohydrogen would cost about $2.80 kg −1 which can be competitive with gasoline (Jiménez-Llanos et al, 2020). Some bioreactor designs can also significantly raise the production cost, particularly depending on the manufacturing materials (Sathyaprakasan and Kannan, 2015), because the cost of materials and nutrients can make up more than 80% of major expenses (Show et al, 2018). A near-horizontal tubular reactor system built using single-stage algal biophotolysis cost $50 m −2 , assuming a 17% capital charge per year and a 10% efficiency of sunlight conversion.…”

Section: Economic Analysis Of Biohydrogen Productionmentioning

confidence: 99%

Biohydrogen Production From Biomass Sources: Metabolic Pathways and Economic Analysis

et al. 2021

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The commercialization of hydrogen as a fuel faces severe technological, economic, and environmental challenges. As a method to overcome these challenges, microalgal biohydrogen production has become the subject of growing research interest. Microalgal biohydrogen can be produced through different metabolic routes, the economic considerations of which are largely missing from recent reviews. Thus, this review briefly explains the techniques and economics associated with enhancing microalgae-based biohydrogen production. The cost of producing biohydrogen has been estimated to be between $10 GJ-1 and $20 GJ−1, which is not competitive with gasoline ($0.33 GJ−1). Even though direct biophotolysis has a sunlight conversion efficiency of over 80%, its productivity is sensitive to oxygen and sunlight availability. While the electrochemical processes produce the highest biohydrogen (>90%), fermentation and photobiological processes are more environmentally sustainable. Studies have revealed that the cost of producing biohydrogen is quite high, ranging between $2.13 kg−1 and 7.24 kg−1via direct biophotolysis, $1.42kg−1 through indirect biophotolysis, and between $7.54 kg−1 and 7.61 kg−1via fermentation. Therefore, low-cost hydrogen production technologies need to be developed to ensure long-term sustainability which requires the optimization of critical experimental parameters, microalgal metabolic engineering, and genetic modification.

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Section: Economic Analysis Of Biohydrogen Productionmentioning

confidence: 99%

Biohydrogen Production From Biomass Sources: Metabolic Pathways and Economic Analysis

et al. 2021

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“…Bio-hydrogen production through fermentation has advantages over other approaches, because abundant waste biomass can be used without increasing the amount of greenhouse gases in the atmosphere, and moving closer to a "hydrogen economy". If 88% of the cost of biohydrogen through fermentation of glucose is attributed to the feedstock [154,155]. It is important to utilize cost-effective substrates.…”

Section: Potential and Challengesmentioning

confidence: 99%

Reviewing the potential of bio-hydrogen production by fermentation

Baeyens

Zhang

Nie

et al. 2020

Renewable and Sustainable Energy Reviews

173

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“…In the economic perspective, three approaches could be possible for the development of microalgae AD: (1) implementing AD for biogasification of cell debris or waste streams in microalgal based processes such as biodiesel/bioethanol/high-value bioproducts (e.g. PHA)/fuel cell/ hydrothermal liquefaction/hydrogen production [68,120]; (2) investigation of high-value products from intermediate metabolites produced during AD such as carboxylic acids [37]; (3) electricity production from microalgae derived biogas. In previous sections, the cost of electricity from microalgae derived biogas is comparable with market value while cost of the renewable natural gas from microalgae is much higher than the current market value of natural gas.…”

Section: Biorefinery Conceptsmentioning

confidence: 99%

Techno-Economic Analysis of Biogas Production from Microalgae through Anaerobic Digestion

Wu¹,

Moreira²,

Zhang³

et al. 2019

Anaerobic Digestion

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Microalgae are a promising feedstock for bioenergy due to higher productivity, flexible growing conditions, and high lipid/polysaccharide content compared to terrestrial biomass. Microalgae can be converted to biogas through anaerobic digestion (AD). AD is a mature technology with a high energy return on energy invested. Microalgae AD can bypass energy intensive dewatering operations that are associated with liquid fuel production from algae. A techno-economic assessment of the commercial feasibility of algae-based biogas production was conducted using Cyanothece BG0011 biomass as an example. BG0011 is a naturally occurring, saline cyanobacterium isolated from Florida Keys. It fixes atmospheric nitrogen and produces exopolysaccharide (EPS). Maximum cell density and EPS concentration of 2.7 and 2.1 g afdw 1 /L (for total algae biomass concentration of 4.8 g afdw/L) were obtained by air sparging. For an areal cell and EPS productivity of 12.4 and 9.6 g afdw/m2/day, respectively, the biomethane production cost was 14.8 $/MMBtu using covered anaerobic lagoon and high-pressure water scrubbing for biogas purification. Electricity production from biogas costs 13 cents/kwh. If areal productivity was increased by 33% from the same system, by sparging air enriched with 1% CO2, then biomethane cost was reduced to 12.16 $/MMBtu and electricity cost to 11 cents/kwh.

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Economics of Bio-Hydrogen Production

Cited by 38 publications

References 9 publications

Biohydrogen Production From Biomass Sources: Metabolic Pathways and Economic Analysis

Biohydrogen Production From Biomass Sources: Metabolic Pathways and Economic Analysis

Reviewing the potential of bio-hydrogen production by fermentation

Techno-Economic Analysis of Biogas Production from Microalgae through Anaerobic Digestion

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