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Work Package 2. Potential to produce Methane from extraction By-products Through Anaerobic Digestion. FORTH G. Antonopoulou , K. Stamatelatou and G. Lyberatos. 24 April 2009, Foggia, Italy. Methane production from rapeseed and sunflower meal.

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Work package 2
Work Package 2

Potential to produce Methane from extraction By-products Through Anaerobic Digestion

FORTH

G. Antonopoulou, K. Stamatelatou and G. Lyberatos

24 April 2009, Foggia, Italy


Methane production from rapeseed and sunflower meal

Biochemical Methane Potential (BMP) tests on rapeseed and sunflower meal

  • Selection of both feedstocks

  • Characterization of their physicochemical and biochemical parameters

  • Application of pretreatment methods for enhancing the methane potential and their biodegradability

    - thermal ( 1bar, 121oC for 60 min )

    - alkaline treatment (NaOH)

    - acid treatment (H2SO4)



Methane production from rapeseed meal
Methane production from rapeseed meal

m3 CH4

t rapeseed meal

Yield = 423

24 April 2009, Foggia, Italy


Methane production from rapeseed meal effect of thermal pretreatment
Methane production from rapeseed mealEffect of thermal pretreatment

  • Conditions : 60 min in 120oC, 1.2atm

Only 2.8 % increase

24 April 2009, Foggia, Italy


Methane production from rapeseed mealEffect of alkaline pretreatment

  • Alkaline : 60 min in NaOH (2%w/v)

  • Thermal alkaline: 60 min in 120oC, 1.2atm, with NaOH (2%w/v)

24 April 2009, Foggia, Italy


Methane production from rapeseed mealEffect of acid pretreatment

  • Acid : 60 min in H2SO4 (2%w/v)

  • Thermal acid: 60 min in 120oC, 1.2atm, with H2SO4 (2%w/v)

24 April 2009, Foggia, Italy


Methane production from rapeseed
Methane production from rapeseed

extraction

meal

423 m3 CH4 / t meal

577 m3 biogas / t meal

straws

203 m3 CH4 / t straws

273 m3 biogas / t straws

24 April 2009, Foggia, Italy



Methane production from sunflower meal
Methane production from sunflower meal

m3 CH4

t sunflower meal

Yield = 445

24 April 2009, Foggia, Italy


Methane production from sunflower meal effect of thermal pretreatment
Methane production from sunflower mealEffect of thermal pretreatment

  • Conditions : 60 min in 120oC, 1.2atm

Only 3.8 % increase

24 April 2009, Foggia, Italy


Methane production from sunflower mealEffect of alkaline pretreatment

  • Alkaline : 60 min in NaOH (2%w/v)

  • Thermal alkaline: 60 min in 120oC, 1.2atm, with NaOH (2%w/v)

24 April 2009, Foggia, Italy


Methane production from sunflower mealEffect of acid pretreatment

  • Acid : 60 min in H2SO4 (2%w/v)

  • Thermal acid: 60 min in 120oC, 1.2atm, with H2SO4 (2%w/v)

24 April 2009, Foggia, Italy


Methane production from sunflower
Methane production from sunflower

extraction

meal

445 m3 CH4 / t meal

603 m3 biogas / t meal

straws

218 m3 CH4 / t straws

313 m3 biogas / t straws

24 April 2009, Foggia, Italy



Olive pulp
Olive pulp OMW)

  • High humidity

  • Difficult to store, transfer and further process to extract the seed oil

  • Material rich in carbohydrates and organic content(Guillénetal, 1992)

Suitable for biofuels production

such as hydrogen, methane

24 April 2009, Foggia, Italy

Semi solid residue (Borja et al, 2006)

Coming from the two phase extraction of olive oil


Methane production from olive pulp
Methane production from olive pulp OMW)

24 April 2009, Foggia, Italy

  • Possible to produce biogas under mesohilic (35 C) and thermophilic (55 C) conditions

  • Continuous operation of bioreactors (CSTR)

  • Working volume 3L

  • Stable operation under Hydraulic Retention Times from 20 d to 10 d (mesophilic) and from 20 to 3d (thermophilic)


Methane productivity and yield
Methane productivity and yield OMW)

m3 biogas

t olive pulp

74. 9


Methane production from olive pulp1
Methane production from olive pulp OMW)

m3 biogas

t olive pulp

79. 3

24 April 2009, Foggia, Italy


Thank you ! OMW)

24 April 2009, Foggia, Italy


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