Ofloxacin (OFX), a popular fluoroquinolone antibiotic, is hard to metabolise and can cause harm to ecosystems and humans when released into the environment. Although Biochar proves effective in OFX removal, its unsustainability arises from challenges in removing it from the aquatic environment and the high costs associated with an energy-intensive pyrolysis process and expensive feedstocks. In this study, jackfruit derived biochar-alginate composite hydrogel beads (BAB) were synthesised to investigate the adsorption of OFX from aqueous solution. Three different samples were prepared by encapsulating biochar in alginate hydrogel, with the biochars encapsulated being unpyrolysed (B0) and pyrolysed at temperatures of 200 ºC (B2) and 500 ºC (B5). BAB exhibited satisfactory performance in OFX adsorption, with B2 reaching a maximum adsorption capacity of 11.4 mg g−1 indicating the better performance of BAB with biochar of a lower pyrolysis temperature. A good fit of the pseudo-second-order model (R2 ≥ 0.979) indicated chemisorption. The adsorption isotherms were described by the Freundlich model (R2 ≥ 0.930) with n values of more than 1, indicating a multilayer adsorption process and adsorption of OFX onto BAB being favourable. For swelling behaviour, B0 exhibited the highest degree of swelling (118%). Furthermore, swelling increased after 2 cycles of swelling in water, indicating potential for reusability in different applications.