1. 1) Araujo, A. L. P. D., Gimenes, M. L., Barros, M. A. S. D. D., & Silva, M. G. C. D. (2013): A kinetic and equilibrium study of zinc removal by Brazilian bentonite clay, Materials Research, 16(1), 128-136.
2. 2) ASTM. (1994): Standard test method for specific gravity of soils, ASTM D854-92, West Conshohocken, PA: ASTM.
3. 3) ASTM. (1996): Standard test method for one-dimensional consolidation properties of soils. D 2435, American Society for Testing and Materials, Philadelphia.
4. 4) ASTM. (2008): Standard test method for 24-h batch-type measurement of contaminant sorption by soils and sediments, ASTM D4646, West Conshohocken, PA: ASTM
5. 5) ASTM. (2010): Standard test methods for liquid limit, plastic limit, and plasticity index of soils, ASTM D4318, West Conshohocken, PA: ASTM.