THE EFFECT OF ACTIVATION TEMPERATURE ON PORE DIAMETER AND ADSORPTION CAPACITY OF ACTIVATED CARBON DERIVED FROM LIGNOCELLULOSIC BIOMASS: A REVIEW

Abstract: Activated carbon derived from lignocellulosic biomass has attracted significant attention due to its potential application in wastewater treatment. This review examines the effect of activation temperature on pore structure development and methylene blue adsorption capacity of activated carbon produced from teak sawdust waste. Activation temperature plays a crucial role in determining pore size distribution, surface area, and adsorption performance. Based on previous studies, increasing activation temperature promotes the transformation of micropores into mesopores due to enhanced devolatilization and gasification reactions. This structural evolution improves the adsorption capacity for methylene blue, a large organic molecule commonly used as a model adsorbate. However, excessively high activation temperatures may lead to pore collapse and reduced adsorption efficiency. This review highlights the importance of optimizing activation temperature to achieve a balance between pore development and structural stability. The findings provide insights into the design of efficient biomass-based adsorbents for environmental applications.

Keywords: activated carbon, activation temperature, pore structure, methylene blue, teak sawdust, adsorption