Operational variable effects on heavy metals acid leaching present in fly ash
In this research work the operational variable effects are analyzed on vanadium and nickel acid leaching, both present in fly ash from fuel oil combustion. The samples used correspond to fly ash coming from a thermoelectric plant. The extraction procedure includes batch acid leaching varying: tempe...
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Format: | Article |
Language: | English |
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Universidad del Zulia
2010-11-01
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Series: | Revista Técnica de la Facultad de Ingeniería |
Subjects: | |
Online Access: | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5830 |
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author | Lourdes Piña Eligleys Dorante Cézar García José González Karina Martínez |
author_facet | Lourdes Piña Eligleys Dorante Cézar García José González Karina Martínez |
author_sort | Lourdes Piña |
collection | DOAJ |
description | In this research work the operational variable effects are analyzed on vanadium and nickel acid leaching, both present in fly ash from fuel oil combustion. The samples used correspond to fly ash coming from a thermoelectric plant. The extraction procedure includes batch acid leaching varying: temperature, particle size, acid concentration and stirring time. Metal content is determined by atomic absorption spectrophotometry. The following leaching conditions gave good vanadium recovery: a) 20% sulfuric acid, 40°C, original sample, 6 hours contact time and 4230 mgV/L maximum concentration. b) 20% nitric acid, 50°C, original sample, 6 hours contact time and 3869 mgV/L maximum concentration. c) 20% hydrochloric acid, 50°C, original sample, 4 hours contact time and 4290 mgV/L maximum concentration (with 100% extraction). The following leaching conditions gave good nickel recovery: a) 20% sulfuric acid, 40°C, original sample, 2 hours contact time and 294. 50 mgNi/L maximum concentration. b) 20% Nitric acid, 50°C, original sample, 6 hours contact time and de 325 mgNi/L maximum concentration. c) 20% Hydrochloric acid, 50°C, original sample, 6 hours contact time and 373.50 mgNi/L maximum concentration. Vanadium and Nickel have been efficiently recovered from oil fly ash.
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first_indexed | 2024-04-13T05:55:49Z |
format | Article |
id | doaj.art-541e1a549a13424f8a1642b05b64b881 |
institution | Directory Open Access Journal |
issn | 0254-0770 2477-9377 |
language | English |
last_indexed | 2024-04-13T05:55:49Z |
publishDate | 2010-11-01 |
publisher | Universidad del Zulia |
record_format | Article |
series | Revista Técnica de la Facultad de Ingeniería |
spelling | doaj.art-541e1a549a13424f8a1642b05b64b8812022-12-22T02:59:38ZengUniversidad del ZuliaRevista Técnica de la Facultad de Ingeniería0254-07702477-93772010-11-01271Operational variable effects on heavy metals acid leaching present in fly ashLourdes Piña0Eligleys Dorante1Cézar García2José González3Karina Martínez4Universidad del Zulia-VenezuelaUniversidad del Zulia-VenezuelaUniversidad del Zulia-VenezuelaUniversidad del Zulia-VenezuelaUniversidad del Zulia-Venezuela In this research work the operational variable effects are analyzed on vanadium and nickel acid leaching, both present in fly ash from fuel oil combustion. The samples used correspond to fly ash coming from a thermoelectric plant. The extraction procedure includes batch acid leaching varying: temperature, particle size, acid concentration and stirring time. Metal content is determined by atomic absorption spectrophotometry. The following leaching conditions gave good vanadium recovery: a) 20% sulfuric acid, 40°C, original sample, 6 hours contact time and 4230 mgV/L maximum concentration. b) 20% nitric acid, 50°C, original sample, 6 hours contact time and 3869 mgV/L maximum concentration. c) 20% hydrochloric acid, 50°C, original sample, 4 hours contact time and 4290 mgV/L maximum concentration (with 100% extraction). The following leaching conditions gave good nickel recovery: a) 20% sulfuric acid, 40°C, original sample, 2 hours contact time and 294. 50 mgNi/L maximum concentration. b) 20% Nitric acid, 50°C, original sample, 6 hours contact time and de 325 mgNi/L maximum concentration. c) 20% Hydrochloric acid, 50°C, original sample, 6 hours contact time and 373.50 mgNi/L maximum concentration. Vanadium and Nickel have been efficiently recovered from oil fly ash. https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5830acid leachingfly ashvanadium and nickel |
spellingShingle | Lourdes Piña Eligleys Dorante Cézar García José González Karina Martínez Operational variable effects on heavy metals acid leaching present in fly ash Revista Técnica de la Facultad de Ingeniería acid leaching fly ash vanadium and nickel |
title | Operational variable effects on heavy metals acid leaching present in fly ash |
title_full | Operational variable effects on heavy metals acid leaching present in fly ash |
title_fullStr | Operational variable effects on heavy metals acid leaching present in fly ash |
title_full_unstemmed | Operational variable effects on heavy metals acid leaching present in fly ash |
title_short | Operational variable effects on heavy metals acid leaching present in fly ash |
title_sort | operational variable effects on heavy metals acid leaching present in fly ash |
topic | acid leaching fly ash vanadium and nickel |
url | https://www.produccioncientificaluz.org/index.php/tecnica/article/view/5830 |
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