Details

Autor(en) / Beteiligte

• Čepauskienė, Deimantė
• Vaškevičienė, Irena
• Praspaliauskas, Marius
• Pedišius, Nerijus

Titel

Comparison of the influence of additives on the melting behaviour of wheat straw and fibre hemp ash

Ist Teil von

• Biomass conversion and biorefinery, 2024, Vol.14 (21), p.26765-26777

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The influence of seven mineral additives on wheat straw ( Palaeas triticum ) and fibre hemp ( Cannabis sativa ) ash melting behaviours was investigated. The aim was to characterize ash melting with the mineral additives magnesium oxide (MgO), silicon oxide (quartz) (SiO 2 ), kaolin (Al 2 O 3 ·2SiO 2 ·2H 2 O), calcium oxide (CaO), and phosphogypsum (hemihydrate and dihydrate) and to compare the quality of the results obtained with those using potassium carbonate (K 2 CO 3 ) as the ash melting modifier. The total elemental concentrations were distributed in the sequence Ca > Si > P > Na > K > Cl for fibre hemp and in the sequence K > Si > P > Cl > Ca > Na for wheat straw. The primary components were CaCO 3 , SiO 2 , Ca 4 O(PO 4 ) 2 , KCl, K 2 SO 4 , and KCaPO 4 in fibre hemp ash and SiO 2 in wheat straw ash. XRD analysis revealed that the effect of combustion temperature on the crystalline phases of the biomass ash was significant. The study results showed that for hemp fibre, additives had a negative influence not only on the ash melting behaviour but also on the ash content. Based on these study results, incineration of wheat straw could be improved with the addition of MgO and Al 2 O 3 ·2SiO 2 ·2H 2 O at a 2% mass ratio of raw material, with a slight increase in the amount of ash. Graphical abstract