Abstract
ABSTRACT Energy recovery from biomass, specifically lignocellulosic biomass, has been in research focus as an alternative to fossil fuel due to natural abundance and carbon-neutral feature. This study investigated the effect of chemical pretreatments on the composition and energy recovery potential of waste biomass (rice straw). The proximate and ultimate analysis confirmed a notable change in the waste biomass composition subjected to various pretreatments. Increased severity of the acid pretreatments significantly increased the energy recovery potential. A 15.67% enhancement in energy recovery potential was noted in waste biomass (rice straw) subjected to pretreatment with 30% sulfuric acid. The economic analysis revealed that enhancement in energy recovery potential (calorific value) can result in an economic gain. A net economic gain of 10.4% was computed for rice straw pretreated with 30% sulfuric acid. The correlation of economic benefit with the change in composition and energy content of an agro-residue (waste biomass) is the novelty of the study.
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