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Saccharification of Sawdust Masses from the Lagos Lagoon in Nigeria with Aspergillus niger Cellulase

The Lagos Lagoon in Nigeria is extensively polluted with sawdust produced by hundreds of sawmills located on the banks of the lagoon. In order to develop cellulose as a possible resource of bioenergy different masses of various sawdust materials was exposed to the saccharification action by a fungal cellulase source, Aspergillus niger. Five different masses of delignified and non-delignified sawdust materials have been bio-converted with A. niger cellulase into glucose, a fermentable sugar. The amount of sugar released has increased when increasing masses of waste cellulose was degraded although the percentage saccharification shown a decline when increasing masses was degraded. Delignification of sawdust was effective in terms of sugar production during A. niger cellulase catalyzed degradation as the bio-conversion of all delignified materials produced more sugar than the non-delignified materials. The highest amount of sugar was produced from 10 mg of Pterygota macrocarpa sawdust while the highest percentage of saccharification was calculated at 85% during bio-conversion of 2.0 mg of delignified sawdust from P. macrocarpa. Sawdust along the Lagos Lagoon is a major solid waste product that could be developed as a resource of bio-energy if the cellulose component of this material is effectively saccharified.