Design and preparation magnetic bio-surfactant rhamnolipid-layered double hydroxide nanocomposite as an efficient and recyclable adsorbent for the removal of Rifampin from aqueous solution

•A novel magnetic core–shell rhamnolipid intercalated layered double hydroxide nanocomposite, MCSR-LDH, was used for rifampin removal.•MCSR-LDH exhibited excellent adsorption capacity for rifampin (221.30 mg/g).•The results showed that the RIF removal efficiency is 96%.•ΔH˚ value showed the exothermic nature of adsorption process.•The adsorption results followed pseudo – first–order and Temkin models.