Orange peel biochar as an adsorbent for removal of reactive orange 16 (RO16)

This study aims to investigate the effectiveness of orange peel biochar as an adsorbent for the removal of Reactive Orange 16 (RO16) dye from an aqueous solution. The plentiful waste orange peels have the potential to be an inexpensive adsorbent for the removal of Reactive Orange 16 (RO16) dye. Adsorption is a popular method for removing dyes from aqueous solution because it is efficient, simple, and cost-effective. Numerous parameters, including the effect of carbonisation temperature, adsorbent dose, initial dye concentration, and contact time, have been investigated. The findings indicated that 700 °C for carbonisation, 1.2 g of adsorbent, 100 mg/L of initial dye concentration, and an eight-hour contact period were the ideal values. With orange peel biochar, the greatest percentage of Reactive Orange 16 dye removal was 97.48 %. The regression analysis of the adsorption results using the linear models revealed that a Langmuir model better approximated the adsorption.