Though Adsorption is a surface incident, Amount of adsorption is comparative toward the precise surface zone, which is well-distinct as the percentage of complete surface area presented for adsorption. The major factors affect the adsorption method are The aims and objectives of the findings is to change a cost-economical and sustainable technology for the elimination of dyes from industrial wastewater and to develop highly efficient technology for the utilization of agricultural byproducts i.e., Mustard Seed cake as biomass and produce surface functionalized biochar as an adsorbent for textile wastewater treatment.