TY - JOUR
T1 - Effect of temperature and pH on the biosorption of ammonium onto Posidonia oceanica fibers
T2 - Equilibrium, and kinetic modeling studies
AU - Wahab, Mohamed Ali
AU - Jellali, Salah
AU - Jedidi, Naceur
N1 - Funding Information:
The authors thank the Tunisian ministry of higher education, scientific research and technology for financial support.
PY - 2010/11
Y1 - 2010/11
N2 - In the present study, the effects of temperature and pH on ammonium biosorption onto Posidonia oceanica fibers were investigated. The results showed that the ammonium biosorption onto these fibers occurred for a wide pH range and the adsorption capacity of these fibers increased with increasing temperature. The modeling studies showed that the ammonium biosorption was well described by the pseudo-second-order model, predicting therefore chemisorption interactions-type at earlier stages and intraparticle diffusion at later stages. The ammonium biosorption was governed by film diffusion process at various temperatures. Besides, equilibrium data were very well represented by Langmuir isotherm, which confirmed the mono-layer coverage. The use of P. oceanica fibers presents an interesting option for both tertiary wastewater treatment (as a possible non-conventional biosorbent for the removal of ammonium), and waste recycling (as a fertilizer and compost).
AB - In the present study, the effects of temperature and pH on ammonium biosorption onto Posidonia oceanica fibers were investigated. The results showed that the ammonium biosorption onto these fibers occurred for a wide pH range and the adsorption capacity of these fibers increased with increasing temperature. The modeling studies showed that the ammonium biosorption was well described by the pseudo-second-order model, predicting therefore chemisorption interactions-type at earlier stages and intraparticle diffusion at later stages. The ammonium biosorption was governed by film diffusion process at various temperatures. Besides, equilibrium data were very well represented by Langmuir isotherm, which confirmed the mono-layer coverage. The use of P. oceanica fibers presents an interesting option for both tertiary wastewater treatment (as a possible non-conventional biosorbent for the removal of ammonium), and waste recycling (as a fertilizer and compost).
KW - Ammonium
KW - Biosorption
KW - PH
KW - Posidonia oceanica fibers
KW - Temperature
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U2 - 10.1016/j.biortech.2010.06.099
DO - 10.1016/j.biortech.2010.06.099
M3 - Article
C2 - 20634059
AN - SCOPUS:77955173476
SN - 0960-8524
VL - 101
SP - 8606
EP - 8615
JO - Bioresource Technology
JF - Bioresource Technology
IS - 22
ER -