This study reports the preparation of activated carbon from durian shell (DSAC) by microwave
assisted NaOH activation. The operational parameters including chemical impregnation ratio (0.25–2.00),
microwave power (90–800 W) and irradiation time (4–8 min) on the carbon yield and adsorption
capability were investigated. The virgin characteristics of DSAC were examined by pore structural
analysis, Scanning Electron Microscopy, Fourier transform infrared spectroscopy, nitrogen adsorption
isotherm, elemental analysis, and surface acidity/basicity. The adsorptive property of DSAC was quantified
using methylene blue as model dye compound. Equilibrium data were simulated using the Freundlich,
Langmuir, Temkin and Redlich–Peterson isotherm models. Kinetic modeling was fitted to the pseudofirst-
order, pseudo-second-order and Elovich equations, while adsorption mechanism was determined
using the intraparticle diffusion and Boyd models. The best conditions resulted in DSAC with a monolayer
adsorption capacity for MB of 410.85 mg/g, while the BET surface area and total pore volume were
identified to be 1475.48 m2/g and 0.841 m3/g, respectively. The findings revealed the potential of durian
shell as a viable biomass for preparation of activated carbon.