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Ammonia-Nitrogen Sorptional Properties of Banana Peels

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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.
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Keywords: ammonia-nitrogen; banana peel; mechanism; sorption

Document Type: Research Article

Affiliations: School of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, P.R. China

Publication date: 01 April 2011

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    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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