The production of pigments &amp; hydrogen through a Spirogyra sp. biorefinery

Pacheco, Ricardo; Ferreira, Ana F.; Pinto, Tiago; Nobre, Beatriz P.; Loureiro, David; Moura, Patrícia; Gouveia, Luísa; Silva, Carla M.

doi:10.1016/j.enconman.2014.10.040

Cited by 58 publications

(28 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(division Chlorophyta, family Zygnemaceae) acquired from SAG (Sammlung von Algenkulturen G€ ottingen) of the University of G€ ottingen (reference: SAG 170.80). The microalga was grown in an open raceway pond and the biomass was harvested and dried as previously described [13]. The biomass was characterized in terms of moisture, total sugars, crude protein, fat, and ash contents, according to the A.O.A.C standard methods [18].…”

Section: Spirogyra Culture and Biomass Hydrolysismentioning

confidence: 99%

“…Comparatively, the high-potential for sugar accumulation that the microalga Spirogyra presents, makes it extremely adequate as a fermentative substrate. In a recently proposed model of a microalgae biorefinery for hydrogen and pigments production, 156 mL H 2 /g of total sugars were produced from milled Spirogyra biomass without any acid or enzymatic pre-treatment [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Ortigueira

Pinto

Gouveia

et al. 2015

Energy

View full text Add to dashboard Cite

a b s t r a c tThe biological hydrogen production from Spirogyra sp. biomass was studied in a SBR (sequential batch reactor) equipped with a biogas collecting and storage system. Two acid hydrolysis pre-treatments (1N and 2N H 2 SO 4 ) were applied to the Spirogyra biomass and the subsequent fermentation by Clostridium butyricum DSM 10702 was compared. The 1N and 2N hydrolyzates contained 37.2 and 40.8 g/L of total sugars, respectively, and small amounts of furfural and HMF (hydroxymethylfurfural). These compounds did not inhibit the hydrogen production from crude Spirogyra hydrolyzates. The fermentation was scaled up to a batch operated bioreactor coupled with a collecting system that enabled the subsequent characterization and storage of the biogas produced. The cumulative hydrogen production was similar for both 1N and 2N hydrolyzate, but the hydrogen production rates were 438 and 288 mL/L.h, respectively, suggesting that the 1N hydrolyzate was more suitable for sequential batch fermentation. The SBR with 1N hydrolyzate was operated continuously for 13.5 h in three consecutive batches and the overall hydrogen production rate and yield reached 324 mL/L.h and 2.59 mol/mol, respectively. This corresponds to a potential daily production of 10.4 L H 2 /L Spirogyra hydrolyzate, demonstrating the excellent capability of C. butyricum to produce hydrogen from microalgal biomass.

show abstract

Section: Spirogyra Culture and Biomass Hydrolysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Ortigueira

Pinto

Gouveia

et al. 2015

Energy

View full text Add to dashboard Cite

show abstract

“…Overall, the choice of FU is found to be similarly distributed between energy, mass and travelled distance. In (Pacheco et al 2015). Moreover, in that work, the authors do not use exclusively an economic FU, but they present a comparison showing how the choice of economic, According to the FC-HyGuide guidance document, the FU of hydrogen production systems should be defined as Ba certain amount of hydrogen produced^and complemented with information on energy content or thermodynamic conditions.…”

Section: Functional Unitmentioning

confidence: 98%

Life cycle assessment of hydrogen energy systems: a review of methodological choices

Valente

Iribarren

Dufour

2016

Int J Life Cycle Assess

124

View full text Add to dashboard Cite

Purpose As a first step towards a consistent framework for both individual and comparative life cycle assessment (LCA) of hydrogen energy systems, this work performs a thorough literature review on the methodological choices made in LCA studies of these energy systems. Choices affecting the LCA stages Bgoal and scope definition^, Blife cycle inventory analysis^(LCI) and Blife cycle impact assessment^(LCIA) are targeted. Methods This review considers 97 scientific papers published until December 2015, in which 509 original case studies of hydrogen energy systems are found. Based on the hydrogen production process, these case studies are classified into three technological categories: thermochemical, electrochemical and biological. A subdivision based on the scope of the studies is also applied, thus distinguishing case studies addressing hydrogen production only, hydrogen production and use in mobility and hydrogen production and use for power generation.Results and discussion Most of the hydrogen energy systems apply cradle/gate-to-gate boundaries, while cradle/gate-tograve boundaries are found mainly for hydrogen use in mobility. The functional unit is usually mass-or energybased for cradle/gate-to-gate studies and travelled distance for cradle/gate-to-grave studies. Multifunctionality is addressed mainly through system expansion and, to a lesser extent, physical allocation. Regarding LCI, scientific literature and life cycle databases are the main data sources for both background and foreground processes. Regarding LCIA, the most common impact categories evaluated are global warming and energy consumption through the IPCC and VDI methods, respectively. The remaining indicators are often evaluated using the CML family methods. The level of agreement of these trends with the available FC-HyGuide guidelines for LCA of hydrogen energy systems depends on the specific methodological aspect considered. Conclusions This review on LCA of hydrogen energy systems succeeded in finding relevant trends in methodological choices, especially regarding the frequent use of system expansion and secondary data under production-oriented attributional approaches. These trends are expected to facilitate methodological decision making in future LCA studies of hydrogen energy systems. Furthermore, this review may provide a basis for the definition of a methodological framework to harmonise the LCA results of hydrogen available so far in the literature.

show abstract

“…with reasonable success (Toh et al, 2014;Vandamme et al, 2013). Further, electrocoagulation and solar drying methods are projected to result in substantial energy savings (Pacheco et al, 2015). truncated photosynthetic antenna for better volume average light capture, (ii) improved RuBisCO enzyme with greater activity and selectivity toward CO 2 , thereby reducing the photorespiration losses, and (iii) Chlorophyll d to expand the absorption spectrum.…”

Section: Harvesting and Dewateringmentioning

confidence: 99%

Challenges and opportunities for microalgae‐mediated CO₂ capture and biorefinery

Seth

Wangikar

2015

Biotech & Bioengineering

View full text Add to dashboard Cite

Aquacultures of microalgae are frontrunners for photosynthetic capture of CO2 from flue gases. Expedient implementation mandates coupling of microalgal CO2 capture with synthesis of fuels and organic products, so as to derive value from biomass. An integrated biorefinery complex houses a biomass growth and harvesting area and a refining zone for conversion to product(s) and separation to desired purity levels. As growth and downstream options require energy and incur loss of carbon, put together, the loop must be energy positive, carbon negative, or add substantial value. Feasibility studies can, thus, aid the choice from among the rapidly evolving technological options, many of which are still in the early phases of development. We summarize basic engineering calculations for the key steps of a biorefining loop where flue gases from a thermal power station are captured using microalgal biomass along with subsequent options for conversion to fuel or value added products. An assimilation of findings from recent laboratory and pilot-scale experiments and life cycle analysis (LCA) studies is presented as carbon and energy yields for growth and harvesting of microalgal biomass and downstream options. Of the biorefining options, conversion to the widely studied biofuel, ethanol, and manufacture of the platform chemical, succinic acid are presented. Both processes yield specific products and do not demand high-energy input but entail 60-70% carbon loss through fermentative respiration. Thermochemical conversions, on the other hand, have smaller carbon and energy losses but yield a mixture of products.

show abstract

The production of pigments & hydrogen through a Spirogyra sp. biorefinery

Cited by 58 publications

References 33 publications

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Life cycle assessment of hydrogen energy systems: a review of methodological choices

Challenges and opportunities for microalgae‐mediated CO₂ capture and biorefinery

Contact Info

Product

Resources

About

The production of pigments & hydrogen through a Spirogyra sp. biorefinery

Cited by 58 publications

References 33 publications

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Life cycle assessment of hydrogen energy systems: a review of methodological choices

Challenges and opportunities for microalgae‐mediated CO2 capture and biorefinery

Contact Info

Product

Resources

About

Challenges and opportunities for microalgae‐mediated CO₂ capture and biorefinery