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Ammonia‐Nitrogen Sorptional Properties of Banana Peels
Using modified banana peel as a biosorbent to treat water containing ammonia‐nitrogen (NH4+‐N) was studied. Related parameters in the sorptional process, such as chemical modification, pH, and contact time were investigaed. The experimental results showed that banana peel modified by 30% sodium hydroxide (NaOH) and mesothermal microwaves (NMBPs) can greatly improve the sorption removal for NH4+‐N. The kinetics study revealed that the sorption behavior better fit the pseudo‐second‐order equation than the Lagergren first‐order equation. Fourier transform infrared absorption spectrum analysis of banana peels and NMBPs before and after NH4+‐N sorption revealed that the activity of hydroxyl groups at the surface of the banana peels was strengthened after modification, and nitrogenous groups appeared after biosorpting the NH4+‐N. In the end, metallurgical wastewater containing a low concentration of NH4+‐N was treated by NMBPs. The initial NH4+‐N concentration of 138 mg/L was reduced to 13 mg/L in 25 minutes by 4 g/L NMBPs at pH 10.
Ammonia‐Nitrogen Sorptional Properties of Banana Peels
Using modified banana peel as a biosorbent to treat water containing ammonia‐nitrogen (NH4+‐N) was studied. Related parameters in the sorptional process, such as chemical modification, pH, and contact time were investigaed. The experimental results showed that banana peel modified by 30% sodium hydroxide (NaOH) and mesothermal microwaves (NMBPs) can greatly improve the sorption removal for NH4+‐N. The kinetics study revealed that the sorption behavior better fit the pseudo‐second‐order equation than the Lagergren first‐order equation. Fourier transform infrared absorption spectrum analysis of banana peels and NMBPs before and after NH4+‐N sorption revealed that the activity of hydroxyl groups at the surface of the banana peels was strengthened after modification, and nitrogenous groups appeared after biosorpting the NH4+‐N. In the end, metallurgical wastewater containing a low concentration of NH4+‐N was treated by NMBPs. The initial NH4+‐N concentration of 138 mg/L was reduced to 13 mg/L in 25 minutes by 4 g/L NMBPs at pH 10.
Ammonia‐Nitrogen Sorptional Properties of Banana Peels
Chen, Yunnen (Autor:in) / Ding, Lichao (Autor:in) / Fan, Jingbiao (Autor:in)
Water Environment Research ; 83 ; 368-372
01.04.2011
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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