KCl-modified guava seed biochar for sulfate removal from groundwater and wastewater: Taguchi optimization and continuous-flow validation

Experimental data from Taguchi L9 optimization and characterization of KCl-modified guava seed biochar for sulfate adsorption. Dataset includes: - Precursor screening results - Synthesis optimization parameters - Kinetic and equilibrium adsorption data - Fixed-bed column breakthrough curves with synthetic solutions - Material characterization (XRD, N2 isotherms, FTIR) Note: Raw groundwater and industrial wastewater data not included due to confidentiality restrictions on source locations and industrial data.