Nanomaterials like graphene and carbon nanotubes (CNTs) have mechanical,  thermal, and electrical properties central to energy storage, electronics, environmental remediation, and advanced materials applications. Their mass production increases environmental sustainability. Life cycle assessment (LCA) provides an assessment of the ecological impacts of the lifecycle of the products, from production through to use and disposal. Representative life cycle stages of graphene and CNT production: raw material extraction, synthesis, processing, application, and end-of-life management. The energy intensity, resources consumed, and greenhouse gas (GHG) emissions are considered for synthesis methods, including chemical vapour deposition (CVD), exfoliation, arc discharge, and laser ablation. Energy and materials consumption during production are key metrics for quantifying the environmental impact of material manufacturing, such as in the production of graphene and carbon nanotubes (CNTs). It is used to quantify the environmental impacts associated with material production, such as graphene and CNTs. Graphene and CNTs are their Eco-Friedrich strategy for mapping sustainable benefits in different applications. Efforts for recovery focus on process efficiency optimization, using renewable energy during production, and developing green synthesis processes using biomass feedstocks. The end-of-life phase is still a key challenge, as graphene and CNTs are typically not biodegradable and may cause problems related to waste disposal and recycling. Graphene and carbon nanotubes are used for sustainable technologies and their environmental implications during production and disposal management.