To support sustainable environmental management and agricultural practices, this study examines the sophisticated uses of nanoparticles and nanotubes in the remediation of industrial, farming, and sewage wastes and their function in creating biofertilizers. Because of their unique qualities, which include a large surface area, reactivity, and adjustable features, nanoparticles are very good at adsorbing, breaking down, and eliminating contaminants from wastewater. Because of their conductivity and structural robustness, nanotubes further improve cleanup procedures by enabling quick pollutant absorption and destruction, particularly for complex pollutants, including organic compounds, heavy metals, and pesticides. The efficacy, stability, and possible environmental hazards of several nanomaterial types, such as metal oxides, carbon-based nanoparticles, and functionalized nanotubes, are examined in this study. The article also emphasizes the dual use of these nanotechnologies in creating biofertilizers, which can support agricultural yield increase, soil health improvement, and nutrient cycling. This strategy offers a viable technique to lower environmental pollutants and promote sustainable farming methods using nanotechnology in wastewater treatment and agriculture. The paper also discusses the obstacles and restrictions to widespread use, including expense, possible toxicity, and regulatory issues. This article sheds light on nanotechnology's present and potential agricultural and environmental management applications, thoroughly examining its contribution to developing sustainable and environmentally friendly solutions.