walnut shell (#2318)

ID-number#2318
Materialwalnut shell
Classification ECN Phyllis classification ▸ husk/shell/pit ▸ walnut ▸ walnut shell
NTA 8003 classification ▸ [200] biomassa uit land- en tuinbouw ▸ [230] restproducten (doppen) ▸ [234] (wal)noten
Submitter organisationECN (Netherlands)
Submission date2002-08-26
Remarksextractive matter (alcohol/benzene 1/1) 2,8%; cellulose etc. extractive-free
LiteratureDemirbas, A.: Fuel characteristics of olive husk and walnut, hazelnut, sunflower, and almond shells. Energy Sources 24 (2002) 215-221

Values

Property Unit Value Std dev Det lim Lab Date Method Remarks
ar dry daf

Fuel Properties

Proximate Analysis

Moisture content wt% (ar)
Ash content wt% 2.80
Volatile matter wt% 59.30 61.01
Fixed carbon wt% 37.90 38.99 Calculated

Ultimate Analysis

Carbon wt% 53.50 55.04 Measured
Hydrogen wt% 6.60 6.79 Measured
Nitrogen wt% 1.50 1.54 Measured
Sulphur wt% 0.10 0.10 Measured
Oxygen wt% 35.50 36.52 Calculated
Total (with halides) wt% 100.00 100.00 Calculated

Calorific Values

Net calorific value (LHV) MJ/kg 20.16 20.74
Gross calorific value (HHV) MJ/kg 21.60 22.22
HHVMilne MJ/kg 22.49 23.14 Calculated

Chemical Analyses

Biochemical composition

Cellulose wt% (dry) 25.60 Measured
Hemicellulose wt% (dry) 22.10 Measured
Lignin wt% (dry) 52.30 Measured
Extractives EtOH/toluene wt% (dry) 2.80 Measured
Total ash + biochemical wt% (dry) 105.60 Calculated

Ash Properties

Ash composition

SO3 wt% (ash) 2.20
P2O5 wt% (ash) 6.20
SiO2 wt% (ash) 9.90
Fe2O3 wt% (ash) 1.50
Al2O3 wt% (ash) 2.40
CaO wt% (ash) 16.60
MgO wt% (ash) 13.40
Na2O wt% (ash) 1.00
K2O wt% (ash) 32.90
TiO2 wt% (ash) 0.10