Experimental dataset for DAH–SS-PC synthesis and Pb2+⁺ adsorption performance of sulfonated biomass char

This repository contains the experimental data supporting the manuscript on the green synthesis of sulfonated peanut shell char via dilute acid hydrolysis and low-temperature sulfonation–partial carbonization (DAH–SS-PC) for Pb2+ adsorption. The dataset includes raw and processed data for biomass pretreatment, sugar yield from dilute acid hydrolysis, mass balance of the integrated DAH–SS-PC process, surface acidity measurements, adsorption kinetics, and equilibrium adsorption isotherms.