Integrated process for biogas production from algal ... anaerobic digestion Integrated process for biogas production from algal biomass AD 20/80 sludge seed/algae Thermal pre-treatment (8h@100C)

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  • Integrated process for biogas production from algal biom ass (2.6)1th Dec. 2011Francesco O m etto

  • Personal Profile

    Environmental Engineering (BS and MSc)University of Padua Italy, March 2010

    Wastewater treatments- biological/chemical treatment- design of wastewater treatment plan

    Solid waste management- classification- treatment facilities - design landfill

    Francesco OmettoPadova, Veneto (North-East Italy)

  • Lifelong Learning Programme ErasmusFeb.-Sep. 2009

    University of Padua - Cranfield University

    MSc ThesisBiological degradation of fats, oils and greases

    Personal Profile

  • Integrated process for biogas production from algal biom ass (2.6)1th Dec. 2011Francesco O m etto

  • Integrated process for biogas production from algal biomass (2.6)

    Start date: 2 August 2010 End date: 2 August 2013

    Project overview

  • Raffaella VillaLecturer in Bioprocess Technology

    Centre for Energy and Resource Technology

    School of Applied Sciences (SAS)Department of Environmental Science and Technology

    In collaboration with a Stream EngD project:

    Project overviewIntegrated process for biogas production from algal biom ass

    Bruce Jefferson Professor in Water Treatment Processes

    Cranfield Water Science Institute

  • Influence of wastewater algal species on theperformance of biogas production after nutrient removalin the anaerobic digestion (AD) process.

    Viability of an integrated process for producing algae fornutrient removal in a wastewater treatment system and,subsequently, using their biomass in digester to producebiogas.

    Complete training programme.

    Project overviewIntegrated process for biogas production from algal biom ass

    O bjectives

  • Algal biomass Harvesting

    Feeding pre-

    treatment

    Anaerobic digestion

    Wastewatertreatment

    Wastewater

    EnergyNutrients

    Wastewater sludge

    CO2

    Project overviewIntegrated process for biogas production from algal biom ass

    Integrated process

  • Know ledge gapIntegrated process for biogas production from algal biom ass

    Only a few microalgae strains have been tested for wastewater treatment and biogas production

    Native wastewater algae investigation required

  • Cambridge WWTP, Anglian Water

    Algal sample to analyse and characterise

  • Know ledge gapIntegrated process for biogas production from algal biom ass

    The harvesting process is expensive and make the global system not economically convenient

    Economic Harvesting process

  • DAF - Dissolved Air FlottationBDAF - Ballasted Flottation (20% energy less) posiDAF (no coagulant, no contamination)

    Increasing coagulant dose

    Low energy harvesting technologiesIntegrated process for biogas production from algal biom ass

  • Know ledge gapIntegrated process for biogas production from algal biom ass

    Algal membrane are very difficult to break; C/N ratio is a critical issue for AD;

    Anaerobic digestion improvement

  • Cells breakage issueIntegrated process for biogas production from algal biom ass

    Scenedesmus obliquus before and after CAMBI pre-treatment

    Improvement of soluble COD

    after pre-treatment+58%

    (optic microscope x40)

  • Algal anaerobic digestionIntegrated process for biogas production from algal biom ass

    AD 20/80 sludge seed/algaeTherm al pre-treatm ent (8h@ 100C)

    Biogas ml/gVS des

    Biogas ml/gVS des

    Methaneml/gVS desMethane

    ml/gVS des

    0

    200

    400

    600

    800

    1000

    1200

    1400

    Control C. Vulgaris C. Sorokiniana S. Obliquus

    no pre-treatment pre-treatment 100C

    0

    50

    100

    150

    200

    250

    300

    Control C. Vulgaris C. Sorokiniana S. Obliquus

    no pre-treatment pre-treatment 100C

  • Algal biomass Harvesting

    Feeding pre-

    treatment

    Anaerobic digestion

    Wastewatertreatment

    Wastewater

    EnergyNutrients

    Wastewater sludge

    CO2

    Project benefitsIntegrated process for biogas production from algal biom ass

    Application of new low energy technologiesImprove algal digestion efficiencyMake the integrated process more sustainable and energetically balanced

  • Personal developm ent -TrainingIntegrated process for biogas production from algal biom ass

    Cranfield UniversityResearch Student Core Skills:

    G etting started w ith research;M anaging your supervisor;Refw orks;Research m ethods in the literature review ;Interpreting and presenting data;Personal developm ent plan;Technical w riting skill w orkshop;Tim e m anagem ent;W orking safety w ith chem icals;

    ATW ARMEnhanced technologies for w ater and w astew ater treatm ent;

    ExternalAlgal cultivation/m aintenance techniques;CCAP-O ban Scotland

    English class;W astew ater analyses;O il extraction from m icroalgae;

  • Personal developm ent Integrated process for biogas production from algal biom ass

    Cranfield UniversitySep. 10 Internal m onthly sem inar SAS (presentation of research project)Jan. 11 STREAM project: algae bioreactors (presentation of research project)Nov. 11 Research Student Conference (poster)

    ATW ARMQ UESTO R/ATW ARM m eetingsJul.11Sum m erschoolEssen (DE),(presentation W aterand Christianityin Italy)

    ExternalNov. 11 UNESCO sem inar ,Venice (IT)Nov.11UniversityofPadua,Padua (IT)Sep. 12 International Conference on Engineering for W aste and Biom assValorisation,Porto (PT)

  • Thank you

    In life, there is nothing to fear and everything to understand.Marie Curie (1867-1934)

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