In addressing the pressing issue of water contamination, there is a critical need for common technologies utilizing for common man with low materials. Among many treatments of waste water, adsorption is the most common and adopted because of its high efficiency. However, the use of Biochar (BC) which is a solid carbon-rich product obtained from the method of pyrolysis of the biomass in oxygen-limited or anaerobic environments. Its extensive specific surface area, porous structure, abundant surface functional groups, and elevated mineral content have led to its application in diverse fields such as energy production and the treatment of water contaminant. As a result of the limitations of pristine biochar (BC) which restrict its application in environmental remediation, an increasing number of studies have been conducted to develop BC-based composite materials. Dyes, commonly used in textile, paper, and printing industries, pose a significant challenge as organic contaminants due to their excellent solubility, complex aromatic molecular structures, and resistance to natural degradation. These colored compounds, visible to the human eye, reduce light penetration into water, leading to oxygen deprivation for aquatic organisms and causing overall water quality deterioration. Consequently, there is an urgent need for eco-friendly, cost-effective methods to treat wastewater containing dyes. In this context, biochar (BC) has emerged as a widely used material for the treatment of dye-contaminated water.