naa a22 4500 510748945 CHVBK 20180411083057.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11270-012-1362-7 doi (NATIONALLICENCE)springer-10.1007/s11270-012-1362-7 Phosphorus Adsorption-Desorption on a Surfactant-Modified Natural Zeolite: A Laboratory Study [Elektronische Daten] [Nina Dionisiou, Theodora Matsi, Νikolaos Misopolinos] Phosphorus adsorption-desorption on a surfactant-modified zeolite (SMZ) was studied with laboratory experiments, in the perspective of using the SMZ for P removal from waters enriched with P. The effects of temperature, pH, and NO3 − concentrations on P adsorption on the SMZ were assessed. In addition, P desorption from the SMZ spiked with P at two concentrations (50 and 200mg kg−1) was investigated. Adsorption data indicated that the SMZ has a high adsorption capacity for P and conformed satisfactorily to the nonlinear forms of Freundlich and Langmuir equations, the latter being slightly superior. Phosphorus adsorption on the SMZ was a fast, exothermic reaction. As the pH of the equilibrium solution increased from the acidic to alkaline range, P adsorption was also increased. In the presence of NO3 − in the external solution, P adsorption was reduced only at the highest NO3 − concentration studied (50mg L−1). In both cases of the P-spiked SMZ, P desorption was not affected by P initial concentration and the overall amount of desorbed P reached only the 7.5mg kg−1. Results showed that SMZ can be an effective adsorbent for P and could be used for P removal from waters enriched with P; however, the latter has to be confirmed by large-scale experiments. Springer Science+Business Media Dordrecht, 2012 Surfactant-modified zeolite nationallicence Phosphorus adsorption nationallicence Phosphorus desorption nationallicence Water quality nationallicence Dionisiou Nina Laboratory of Applied Soil Science, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut Matsi Theodora Soil Science Laboratory, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut Misopolinos Νikolaos Laboratory of Applied Soil Science, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-10 0049-6979 224:1<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1362-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1362-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dionisiou Nina Laboratory of Applied Soil Science, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut NATIONALLICENCE 700 1- Matsi Theodora Soil Science Laboratory, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut NATIONALLICENCE 700 1- Misopolinos Νikolaos Laboratory of Applied Soil Science, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/1(2013-01-01), 1-10 0049-6979 224:1<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer