Work Package 2
20
FORTH/ICE-HT 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
description
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. - PowerPoint PPT Presentation
Transcript of Work Package 2
FORTH/ICE-HT
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
FORTH/ICE-HT
• 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 and sunflower meal
Biochemical Methane Potential (BMP) tests on rapeseed and sunflower meal
FORTH/ICE-HT
Potential to produce Methane from Rapeseed meal
24 April 2009, Foggia, Italy
FORTH/ICE-HT
Methane production from rapeseed meal
Characteristic value
Dry matter (wt%) 91.17
Moisture (wt%) 8.83
Volatile Solids (wt% dry basis) 86.80
Ash (wt% dry basis) 13.2
Chemical Oxygen demand (g O2 /g dry basis) 1.437
Total protein (wt% dry basis) 6.197
Fat (wt% dry basis) 5.48
0 5 10 15 20 25 30 350
10
20
30
40
50
60
70
80
90
100
mL
CH
4
time (d)
and rapeseed meal
24 April 2009, Foggia, Italy
Yield = 423 mm33 CH CH44
t rapeseed mealt rapeseed meal
Soluble carbohydrates (wt% dry basis) 5.91
Yield
m3 CH4 / t dry matter 463.52
L CH4/ kgVS 534
m3 biogas / t feedstock 577
FORTH/ICE-HT
Methane production from rapeseed mealEffect of thermal pretreatment
24 April 2009, Foggia, Italy
Conditions : 60 min in 120oC, 1.2atm
0 5 10 15 20 25 30 350
20
40
60
80
100
mL
CH
4
time (d)
and without treatment and thermal treatment
0
100
200
300
400
500
600
L C
H4
/ kg
rape
seed
mea
l without pretreatment thermal pretreatment
Without pretreatment 423 m3 CH4/t feedstock
Thermal treatment 435 m3CH4/t feedstockOnly 2.8 % increase
FORTH/ICE-HT
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)
0 5 10 15 20 25 30 350
20
40
60
80
100
time (d)
mL
CH
4
and without treatment and alkaline treatment
0
100
200
300
400
500
600 without treatment thermal treatment alkaline treatment thermal alkaline treatment
L C
H4
/ kg
rape
seed
mea
l
Without pretreatment 423 m3CH4/t feedstock
Alkaline treatment 346 m3CH4/t feedstock
Thermal alkaline treatment 318 m3CH4/t feedstock
FORTH/ICE-HT
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)
Without pretreatment 423 m3CH4/t feedstock
Acid treatment 314 m3CH4/t feedstock
Thermal acid treatment 299 m3CH4/t feedstock
0 5 10 15 20 25 30 350
20
40
60
80
100
time (d)
and without treatment and acid treatment
mL
CH
4
0
100
200
300
400
500
600 without treatment thermal treatment acid treatment thermal acid treatment
L C
H4
/ kg
rape
seed
mea
l
FORTH/ICE-HT
Methane production from rapeseed
24 April 2009, Foggia, Italy
straws
203 m3 CH4 / t straws273 m3 biogas / t straws
extraction
meal
423 m3 CH4 / t meal577 m3 biogas / t meal
FORTH/ICE-HT
Potential to produce Methane from Sunflower meal
24 April 2009, Foggia, Italy
FORTH/ICE-HT
Methane production from sunflower meal
Characteristic value
Dry matter (wt%) 92.14
Moisture (wt%) 7.86
Volatile Solids (wt% dry basis) 89.18
Ash (wt% dry basis) 10.82
Chemical Oxygen demand (g O2 /g dry basis) 1.3823
Total protein (wt% dry basis) 4.99
Fat (wt% dry basis) 4.56
24 April 2009, Foggia, Italy
Yield = 445 mm33 CH CH44
t sunflower mealt sunflower meal
Soluble carbohydrates (wt% dry basis) 4.15
Yield
m3 CH4 / t dry matter 483
L CH4/ kgVS 542
m3 biogas / t feedstock 603
0 5 10 15 20 25 30 350
10
20
30
40
50
60
70
80
90
100
110
mL
CH
4
time (d)
and sunflower meal
FORTH/ICE-HT
Methane production from sunflower mealEffect of thermal pretreatment
24 April 2009, Foggia, Italy
Conditions : 60 min in 120oC, 1.2atm
Without pretreatment 445 m3 CH4/t feedstock
Thermal treatment 462 m3CH4/t feedstockOnly 3.8 % increase
0 5 10 15 20 25 30 350
20
40
60
80
100
120
mL
CH
4
time (d)
and without pretreatment and thermal treatment
0
100
200
300
400
500
600
L C
H4
/kg
sun
flow
er m
eal without pretreatment
thermal pretreatment
FORTH/ICE-HT
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)
Without pretreatment 445 m3CH4/t feedstock
Alkaline treatment 336 m3CH4/t feedstock
Thermal alkaline treatment 335 m3CH4/t feedstock
0 5 10 15 20 25 30 350
20
40
60
80
100
mL
CH
4
time (d)
and without treatment and alkaline treatment
0
100
200
300
400
500
600
L C
H4 /
kg
sun
flow
er m
eal without treatment
thermal treatment alkaline treatment thermal alkaline treatment
FORTH/ICE-HT
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)
Without pretreatment 445 m3CH4/t feedstock
Acid treatment 282 m3CH4/t feedstock
Thermal acid treatment 355 m3CH4/t feedstock
0 5 10 15 20 25 30 350
20
40
60
80
100
time (d)
mL
CH
4
and without treatment and acid treatment
0
100
200
300
400
500
600
L C
H4 /
kg
sun
flow
er m
eal
without treatment thermal treatment acid treatment acid thermal treatment
FORTH/ICE-HT
Methane production from sunflower
24 April 2009, Foggia, Italy
straws
218 m3 CH4 / t straws313 m3 biogas / t straws
extraction
meal
445 m3 CH4 / t meal603 m3 biogas / t meal
FORTH/ICE-HT
Potential to produce Methane from Olive pulp – (2phase OMW)
24 April 2009, Foggia, Italy
FORTH/ICE-HTOlive pulp• Semi solid residue (Borja et al, 2006)
• Coming from the two phase extraction of olive oil
• High humidity
• Difficult to store, transfer and further process to extract the seed oil
• Material rich in carbohydrates and organic content (Guillén et al, 1992)
Suitable for biofuels productionsuch as hydrogen, methane
Characteristic value
Moisture (%) 71.5 ± 0.4
Total Solids (% w/w) 28.4 ± 0.4
Volatile Solids (% w/w) 26.2 ± 0.2
Crushed olive stones (% w/w) 1.3823
24 April 2009, Foggia, Italy
FORTH/ICE-HT
Methane production from olive pulp• 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)
24 April 2009, Foggia, Italy
FORTH/ICE-HT
Methane productivity and yield
Mesophilic
Borja et al. (2004) (solid retention in the bioreactors)
Our group
HRT (d) 40 20 10 8.3 20 10
Dilution of olive pulp 1:5 1:4
Organic Loading Rate (gCOD/L/d) 0.86 1.21 3.45 4.14 3.94 7.88
Methane production rate (L CH4/L/d) 0.24 0.47 0.91 0.85 0.69 1.27
Yield (L methane/gCODadded) 0.38 0.40 0.35 0.31 0.18 0.16
Yield (L CH4/L olive pulp) 55.2 50.8
m3 biogas t olive pulp
74. 9
FORTH/ICE-HT
Methane production from olive pulp
24 April 2009, Foggia, Italy
Thermophilic
Our group
HRT (d) 20 10 5 3
Dilution of olive pulp 1:4
Organic Loading Rate (gCOD/L/d) 3.94 7.88 15.76 26.27
Methane production rate (L CH4/L/d) 0.71 1.22 1.92 2.78
Yield (L methane/gCODadded) 0.18 0.15 0.12 0.11
Yield (L CH4/Lolive pulp) 57 49 38 33
m3 biogas t olive pulp
79. 3
FORTH/ICE-HT
24 April 2009, Foggia, Italy
Thank you !
