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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Main Authors: Lourdes Piña, Eligleys Dorante, Cézar García, José González, Karina Martínez
Format: Article
Language:English
Published: Universidad del Zulia 2010-11-01
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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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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AT eligleysdorante operationalvariableeffectsonheavymetalsacidleachingpresentinflyash
AT cezargarcia operationalvariableeffectsonheavymetalsacidleachingpresentinflyash
AT josegonzalez operationalvariableeffectsonheavymetalsacidleachingpresentinflyash
AT karinamartinez operationalvariableeffectsonheavymetalsacidleachingpresentinflyash