Thermochemical conversion of biomass is rapidly becoming an alternative source for renewable energy and fuel production world-wide. For the process to be sustainable there must be sufficient biomass available as feedstock in order to satisfy the demand of emerging bioenergy industries. Several biomass feedstock have been utilised in the past ranging from agricultural wastes and residues to energy crops. The common factor amidst all the feed-stock processing is the quality of the biofuel produced and the need to upgrade the fuel to meet standard specifications for different applications. Agricultural residues such as rice husks are abundant in rice growing countries such as Brunei, China and India. During the production of rice, rice husks are generated on site as a by-product in the milling factory. As rice is considered a staple food in most developing countries including Brunei, the by-products are available in large quantity to provide a source of alternative energy in the form of biofuel in addition to the current energy sector [1].Although Brunei has a small land area, it is trying to achieve its aim of food security in rice production by growing high yielding variety of rice species [2]. One can expect that the volume of rice husks generated from rice milling will increase in the near future.