Liquefaction of Woody Waste:A Potential Avenue in Utilization of Waste Wood
DOI:
https://doi.org/10.36808/if/2017/v143i9/118905Keywords:
Liquefaction, Lignocellulosic, Phenol, Wood.Abstract
Liquefaction of ligno-cellulosic biomass is one of the chemical conversion technologies for developing new materials, adhesives and resin systems. The process also provides an opportunity to utilize ligno-cellulosic wastes such as saw-dust, cut-off of unfinished wood based items (solid and composite wood) and furniture after service, woody wastes, branches and twigs, etc. for value added products. A large amount of saw dust and wood shaving and other types of wood waste are produced by wood based industries, which is generally incinerated. This paper presents the liquefaction of wood powder in different liquefying media to produce chemically active liquid which has potential to be used as a raw material for different products. Wood liquefaction was carried out at 120°C, 140°C and 160°C temperatures with different liquefying agents. In all the cases, a viscous and sticky black liquid was obtained after the stipulated reaction time. The liquid was found to be soluble in organic solvents like methanol. Liquefaction efficiency of wood powder was found to depend on the type of liquefying reagent and quantity of liquefying agent. Liquefaction of up to 92% was achieved with phenol as the liquefying agent at 1:3 liquid ratio. Characteristics of liquefied wood and residues were also investigated. The liquefaction of wood opens up new avenues for utilization by recycling of wood waste for value added products.References
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