Green biochar briquette from enzymatic pretreated biomass wastes via mild-temperature pyrolysis for eco-friendly biofuels

Abstract

Abstract In this study, benefits of the enzymatic pretreatment of mixed biomass wastes to a thermochemically favourable precursor for production of ecological biofuels are demonstrated. Biochar briquettes derived from the enzymatic- hydrolysis assisted, mild-temperature pyrolysis of biomass wastes are rich in carbon, exhibit higher calorific values and emit less toxic gases during combustion. Specifically, HHV value of the pretreated briquette increases one half of that of untreated briquette. Levels of CO and CO2 emission during the production and consumption of the treated briquette are lower than those of the untreated one. The results indicate a superior performance of biochar produced from the mixtures of various biomass wastes via the combined enzymatic pretreatment and mild-temperature pyrolysis processes in sustainable applications including biofuels.