A systematic review on the future potential of tea waste and other admixtures in bio briquetting from rice husk

Abstract

Disposal of agro-residue and escalating energy demand are the two major problems of developing countries, which can be resolved with co-generation techniques. Several alternative energy generating techniques are available for the optimal usage of agro residue. Among diverse alternatives, briquetting stands out as one of the sustainable and developing technique, defined as the process of conversion of biomass and organic residues through compaction and densification. The optimization of agro residue concerning physical properties and combustion is the primary prerequisite for briquetting. Among various available agro residues, rice husk has excellent potential with significant properties of briquetting like low moisture, high mechanical compressive strength and high heat value but still holds some of the shortcomings. However, rice husk briquettes carry some of the shortcomings which can be overcome through hybrid studies. This paper covers the detailed review of various studies carried out for designing rice husk and derived biobriquettes and also emphasizes on the potential application of tea waste for briquetting.