Grapefruit peelings as a promising biosorbent for the removal of leather dyes and hexavalent chromium E. Rosales, J. Meijide, T. Tavares, M. Pazos, M. A. Sanromán (2016) Process Safety and Environmental Protection, 101: 67-71 DOI: 10.1016/j.psep.2016.03.006