Study of the Characteristics of Ammonia Removal by Monoterpenes and Essential Oil

Abstract:

Abstract. Ammonia is known as one of odorants emitted from landfill sites and several techniques such as deodorant spray, adsorption/absorption processes and incineration have been used for its removal. Among the measures to solve the problem of odor, spraying of deodorants such as diluted essential oil will be promising. This study was carried out to investigate the characteristics and mechanism of ammonia removal by monoterpenes of essential oils. Chemical composition of the essential oil has been analyzed by GC-MS, an ammonia test tube was used to determine ammonia concentration and thus quantify the ammonia removal characteristics of monoterpenes and essential oils, and the interactional mechanism between ammonia and limonene was investigated with 1H NMR spectrometry. The results indicated that the efficiency of ammonia removal by limonene was improved by increasing the molar ratio of limonene to ammonia. Comparison of 1H NMR spectra before and after the interaction of limonene and ammonia showed that the chemical shifts of hydrogen atoms distant from the double bond had the largest changes, the shifts of these signals to lower magnetic field. The interaction interfered with the magnetic spin of the hydrogen atoms and reduced the peak splitting. When the molar ratios of the essential oil of pine needles, β-pinene, α-pinene and limonene to ammonia were 15, the removal rates of ammonia at 100C were 100, 86.0, 72.0 and 46.5%, respectively.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 2224-2228
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.2224
• Online since: May 2012
• Authors: Fu Ji Wen, Kyung Seun Yoo, Jian Xiu Li
• Keywords: ¹H NMR, Ammonia, Essential Oil, Monoterpene, Removal Rate

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