Presence of nutrients in municipal sewage water in high concentrations has raised awareness of theirreuse as a vital limiting resource. With an aim to recover the nutrients in a form that can be used as a soilamendment, a novel biocompatible nanocomposite (BC-P@MNP) was fabricated using green methods. Polysaccharide induced biogenic magnetite nanoparticles (P@MNP) were immobilized onto the biocharof jackfruit peel (BC) to fabricate BC-P@MNP. Microwave irradiation employed during the fabrication ofBC-P@MNP involved less energy consumption, high yields and better adsorption performance ascompared to BC and other reported biochar-composites. Structural features like mesoporosity,crystallinity, magnetism, functionality and nano-sized dimension was demonstrated in BC-P@MNP. Under optimized conditions, batch studies revealed a maximum adsorption efficiency of 7.94 mg/g and5.26 mg/g for phosphates and nitrates respectively. Thermodynamics revealed the feasibility andexothermicity of the system. The high selectivity in the presence of competing co-anions, highregeneration capacity and better separability enable BC-P@MNP to be used as advanced, economicaladsorbent for wastewater applications. High nutrient recovery and biocompatibility ensured thepotential of the spent adsorbent to be used as a soil amendment. Breakthrough curves obtained fromfixed-bed column tests conducted on agricultural wastewater demonstrated the use of higher bed depthsand lowerflow rates for achieving higher phosphate removal as well as for ensuring lower unusedcolumn bed. The study demonstrated the technological advancement of a biogenic nanocompositefabricated from green methods over other reported adsorbents for removal and recovery of nutrientsfrom water. © 2021 The Korean