Efficient Dye Removal Strategies: Exploring the Role of Biochar

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ABSTRACT

The surge in industrial activities, notably in sectors such as textiles, leather processing, and paper manufacturing, has led to a considerable rise in synthetic dye discharge into the environment, posing significant threats to ecosystems and human health. Traditional wastewater treatment methods have struggled to effectively address dye pollution due to the complex nature of these pollutants. In response, biochar has emerged as a promising solution, offering unique physicochemical properties that make it an excellent adsorbent for dye removal. This review explores the role of biochar in dye removal, focusing on its surface properties, production methods, and adsorption mechanisms. Biochar’s extensive surface area, porosity, and surface functional groups play crucial roles in facilitating dye adsorption. Various production methods, such as pyrolysis, hydrothermal carbonization, and superheated steam torrefaction, influence biochar properties and effectiveness in dye removal applications. Surface modification techniques enhance biochar’s dye removal capacity and regeneration potential, enabling its reuse in wastewater treatment. Moreover, the surface charge of biochar influences electrostatic interactions with dye molecules, affecting adsorption efficiency. Understanding biochar’s surface charge is essential for optimizing dye removal processes. Overall, biochar holds promise as a sustainable and efficient adsorbent for mitigating dye pollution, offering valuable insights for environmental remediation efforts.

Significance of the study:

The study addresses the urgent need for sustainable solutions to dye pollution in water, highlighting biochar’s potential as an efficient and environmentally friendly adsorbent.

Summary of the study:

This review examines biochar’s role in dye removal, focusing on its surface properties, production methods, adsorption mechanisms, and the potential for regeneration and scalability.