Through advancements in process optimizationProcess optimization, feedstock pretreatmentPretreatments, and catalytic efficiencyCatalytic efficiency, nanotechnologyNanotechnology can completely transformTransform biofuelBiofuel manufacturingBiofuel manufacturing. This chapter examines how nanomaterials, such as conductive materials like graphene and carbon nanotubes, can increase biofuel’s sustainabilitySustainability and output. Particular attention is paid to biocharBiochar, a carbon-rich by-product of biomass pyrolysisPyrolysis, and its dual function as a soil supplement and nanocatalyst support to increase agricultural production, which indirectly affects food security and nutritional effects. The potential of innovations like conductive materials for microbial fuel cells, enzymatic hydrolysisEnzymatic hydrolysis facilitated by nanoparticles, and the nutrient retention properties of biocharBiochar to decarbonizeDecarbonize energy systems and promote circular economiesCircular economy are examined. Nanomaterials’ toxicity, scalability, and economic feasibility are among the challenges evaluated seriously. To meet the demands for food and energy simultaneously, the chapter ends with recommendations for future research areas and integrated systems that combine biofuelBiofuel productionBiofuel production with agro-environmental advantages.