The equations for Taguchi experiment design and mechanism study as well as detailed analysis data from Fe<sub>3</sub>O<sub>4</sub> nanoparticle-coated mushroom source biomaterial for Cr(VI) polluted liquid treatment and mechanism research

STable 1 Thecy STable 2 Models equations of biosorption isotherms, kinetics and thermodynamic studies STable 3. S/N ratio for each factor in each level STable 4. The average of removal efficiency results of a certain factor in the kth level (¯R_k^A,〖 ¯R〗_k^B, ¯R_k^C, ¯R_k^D) and the average of total removal efficiency (¯R_T).