Bio-sorption of ammonium ions by dried red marine algae (Gracilaria persica): Application of response surface methodology
Publish place: Iranian Journal of Fisheries Sciences، Vol: 19، Issue: 4
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JIFRO-19-4_024
تاریخ نمایه سازی: 1 اسفند 1400
Abstract:
The bio-sorption of ammonium ions using red marine macroalga Gracilaria persica were investigated by response surface methodology. The sorbent was characterized by SEM and FTIR analysis. The influence of various operating parameters such as ammonium concentration (mg L-۱), initial solution pH and alga biomass dosage (g L-۱) was optimized using Box–Behnken design. A second-order polynomial model successfully described the effects of independent variables on the ammonium ions removal. At the optimum conditions, the maximum removal efficiency was achieved at ۱۰۰.۰۱ %. The kinetic results also demonstrated that the bio-sorption of ammonium ions by the dried microalga followed well pseudo-second-order kinetics. FTIR results showed that amide, aliphatic and carbonyl groups might be responsible for the adsorption of ammonium ions in aqueous solution by dried G. persica biomass.
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Authors
A. Jafari
Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural and Natural Resources University, Sari, Iran
A. Keramat Amirkolaie
Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural and Natural Resources University, Sari, Iran
H. Oraji
Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural and Natural Resources University, Sari, Iran
M. Kousha
Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural and Natural Resources University, Sari, Iran
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