Sanusi, K. A., Yahaya, Y., Ambrusa, M. M., Yahaya, Y. ., & Hammed, A. M. (2021). OPTIMIZATION OF ADSORPTION OF Pb (II) AND Cr (VI) FROM AQUEOUS SOLUTION USING MODIFIED FELDSPAR COMPOSITE: ISOTHERM AND KINETIC STUDIES. International Journal of Engineering Science Technologies, 5(4), 18–53. https://doi.org/10.29121/ijoest.v5.i4.2021.200