Work Package 1.3
Chemical composition of waste wood mix
Another parameter that defines further processing is chemical composition of recovered wood. In order to elucidate it, samples will be analysed with standard methods. Samples will be milled (Retch SM2000, Retch MM200) into sawdust and afterwards homogenised. For determination of lignin and cellulose content classical wet chemical analysis will be performed. Namely, insoluble solids will be determined according to the recommendation of NREL/TP-510-42621. Lignin content and carbohydrate composition will be determined according to the NREL standard NREL/TP-510-42618 or similar procedures based on the acid hydrolysis. In parallel FTIR analysis will be performed to obtain a high quality spectrum, which allows a determination of potential past fungal degradation. Determination of the necessary additional grading expenses, purification measures and the associated procedures will be provided.
Work Package 1.4
Contamination of waste wood mix
Inorganic contaminates decrease the value of the waste wood mixes as they have negative influence on several pre-treatment processes. Thus, in the last step of the characterization of the recycled waste wood mix the presence of inorganic pollutants will be determined. Special emphasis will be given to the characterization of contaminants, namely surface coatings, biocides, inorganic debits and others and the statistical analysis of recycled wood composition as it varies greatly throughout the year. For chemical analysis X-ray fluorescence spectroscopy will be utilised (Oxford instruments, TwinX).