Lau, Anthony

Research Interests

• Waste-to-Resource Recovery
• Biomass and Bioenergy
• Availability and Quality of Biomass
• Anaerobic Digestion
• Composting

Research Projects

• Biomass feedstock engineering: Research activities include the preprocessing and pretreatment of under-utilized lignocellulosic waste biomass that includes forest residues, crop residues, and urban wood waste to produce high quality solid biofuel (fuel pellets) for heat and power generation, as well as the storage, handling, and transport of the biomass in both densified and non-densified forms. These constitute the main components of the supply chain logistics, which bridges the gap between biomass harvesting and bioenergy production in different types of biomass conversion facilities. The overall strategy associated with the research is to provide the bioenergy industry with a reliable and cost-effective supply of high-quality solid biofuel. Current projects aim at improving the physicochemical and fuel properties of waste biomass to meet the international standards for fuel pellet quality, and developing best practices to minimize the degradation of biomass during storage and handling.
• Bioconversion processes and systems: Research activities are primarily focused on aerobic composting and anaerobic digestion of non-woody biomass/organic wastes. Composting constitutes an important component in today’s integrated solid waste management approach. Woody residuals that are separated from the finished compost product can also be pretreated to produce high quality fuel pellets. Anaerobic digestion of organic wastes for biogas production and upgrading the biogas to biomethane (renewable natural gas) have environmental benefits in terms of reduced greenhouse gas and odour emissions. Current projects aim at improving the performance of the anaerobic digestion process through co-digestion of organic waste mixtures, using biocatalyst, and minimizing the inhibitory metabolites during the digestion process. Research is extended to the recovery of the macro-nutrients from the anaerobic digestate.