Boron Recycling from Obsolete Propulsion Engine
| Autor: | Yong-Ho Shim, Kyeongseok Oh, Sangwook Ha, Ju-Yeong Song |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Thermogravimetric analysis Environmental Engineering Materials science Renewable Energy Sustainability and the Environment Scanning electron microscope 020209 energy Analytical chemistry Pellets Sintering chemistry.chemical_element 02 engineering and technology 01 natural sciences Differential scanning calorimetry chemistry 010608 biotechnology 0202 electrical engineering electronic engineering information engineering Inductively coupled plasma Boron Waste Management and Disposal Diffractometer |
| Zdroj: | Waste and Biomass Valorization. 11:7005-7015 |
| ISSN: | 1877-265X 1877-2641 |
| DOI: | 10.1007/s12649-019-00918-0 |
| Popis: | A process was developed to recover boron from the chemicals of an old propulsion engine. The pellet igniter in a propulsion engine is composed of oxidizers, boron compounds and binders. In order to extract the boron compounds, an organic solvent and/or aqueous treatments were employed and followed by a sintering process. A qualitative and quantitative characterization of boron was performed by differential scanning calorimeter and thermogravimetric analyses (DSC-TGA), X-ray diffractometer (XRD), X-ray fluorescence (XRF), inductively coupled plasma (ICP) and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDX). Overall, 79.7% of boron recovery was achieved. The final purity level of boron was 94%, which is sufficiently pure to satisfy the US Military’s specifications (US-MIL-P-46994B) for the pellet igniter. From the pellets igniter (a), boron (b) and potassium nitrate (c) are purely separated. |
| Databáze: | OpenAIRE |
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