TY - JOUR N2 - This study was undertaken to determine the effectiveness of biosurfactants - saponin, tannin and rhamnolipids JBR 515 and 425, for the removal of cadmium, zinc and copper from activated sludge immobilized in 1.5% sodium alginate with 0.5% polyvinyl alcohol. We also established the impact of pH value on biosorbent regeneration with the analyzed biosurfactants and determined the critical micelle concentration (CMC) in solutions containing the biosorbent and biosurfactant and in exact samples with heavy metals. Saponin exhibited the highest effectiveness of metals leaching at pH 1-5, and rhamnosides at pH 5-6. In addition, the study demonstrated a significant effect of the ratio of biosorbent mass to washing agent volume (m/V) on the effectiveness of metals leaching. Of the biosurfactants analyzed, saponin was ca. 100% effective in leaching zinc and copper. The effectiveness of the other biosurfactants was lower and depended on the metal being leached L1 - http://www.journals.pan.pl/Content/86015/PDF/10265-Volume41-Issue1_paper_06.pdf L2 - http://www.journals.pan.pl/Content/86015 PY - 2015 IS - No 1 DO - 10.1515/aep-2015-0006 KW - CMC KW - biosurfactants KW - heavy metals KW - sorption KW - desorption A1 - Kuczajowska-Zadrożna, Małgorzata A1 - Filipkowska, Urszula A1 - Jóźwiak, Tomasz PB - Polish Academy of Sciences VL - vol. 41 DA - 2015[2015.01.01 AD - 2015.12.31 AD] T1 - Application of biosurfactants for heavy netals leaching from immobilized activated sludge / Zastosowanie biosurfaktantów do wymywania metali ciężkich z immobilizowanego osadu czynnego UR - http://www.journals.pan.pl/dlibra/publication/edition/86015 T2 - Archives of Environmental Protection ER -