Results 21 to 30 of about 82 (54)

Extraction and separation of hexavalent molybdenum from acidic sulfate solutions using Alamine 336 as an extractant [PDF]

open access: yes, 2010
Extraction and separation of hexavalent molybdenum from acidic sulfate solutions using Alamine 336 as an extractant and kerosene as diluent is described.
Jeon, Ho-Seok   +3 more
core   +2 more sources

Evaluation of torrefied poplar-biomass as a low-cost sorbent for lead and terbium removal from aqueous solutions and energy co-generation [PDF]

open access: yes, 2019
Two low-cost renewable poplar-based materials were manufactured in this work for energy production and as sorbents for lead and terbium removal from aqueous effluents. Torrefaction was used as a pretreatment process for conditioning the raw biomass.
Attar, Keltoum   +4 more
core   +1 more source

Purification of coal fly ash leach solution by solvent extraction [PDF]

open access: yes, 2016
A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science in Engineering (Metallurgy and Materials ...
Rushwaya, Mutumwa Jepson
core  

Desenvolupament de vies de valorització per a un residu industrial [PDF]

open access: yes, 2017
[cat] L’augment de la demanda i el progressiu esgotament dels jaciments minerals per a produir metalls emprats en la indústria galvànica, fa que els residus d’aquesta industria, que habitualment són gestionats als abocadors com un rebuig, siguin avui ...
Reynaldos i Sistané, Ricard
core   +2 more sources

Influencia de la α-ciclodextrina en la extracción del oro para la reducción de accidentes ocupacionales e impactos ambientales negativos [PDF]

open access: yes, 2022
Se aplicó un método para la extracción de oro que se basó en el artículo científico de (Cao et al., 2013), en este artículo se precisó como se extrajo el oro con α-ciclodextrina de una solución de tetrabromuro de oro y potasio.
Zegarra Ruiz, Luis Anthony
core  

Purification of coal fly ash leach liquor for alumina recovery [PDF]

open access: yes, 2018
Thesis is submitted in partial fulfilment for the degree of Master of Science in Engineering to the Faculty of Engineering and the Built Environment, School of Chemical and Metallurgical Engineering at the University of the Witwatersrand, Johannesburg ...
Rampou, Mohau
core  

Quarterly summary research report in metallurgy [PDF]

open access: yes, 1955
A quarterly summary research report in metallurgy for April, May, June of 1955 by the Ames Laboratory ...
Spedding, F. H.
core   +2 more sources

Recuperación de oro con cianuro sódico y tiourea como agentes lixiviantes, variando fracción de sólidos, concentraciones y tiempo [PDF]

open access: yes, 2023
El siguiente proyecto de investigación tuvo por objetivo evaluar la eficiencia del cianuro y la tiourea utilizados para la lixiviación de material aurífero, buscando determinar cuál de los dos permite una mayor recuperación de oro.
Lalvay Toledo, Danny Hernán
core  

Recovery of vanadium pentoxide from spent catalyst used in the manufacture of sulphuric acid [PDF]

open access: yes, 2003
Vanadium has many industrial uses and its contribution to environmental contamination is increasing all the time. Recovery of vanadium pentoxide from spent sulphuric acid catalysts was performed using a three-step process involving acid leaching ...
Khorfan, S., Reda, Y., Wahoud, A.
core   +1 more source

Extraction and separation of molybdenum and vanadium from alkaline leaching [PDF]

open access: yes, 2007
Extraction of vanadium and molybdenum from alkaline leaching solution of boiler ash was investigated. The ash coming from heavy oil-fired electrical power station was leached with 8 mol dm^-3 sodium hydroxide at 373 K. The leaching solution was cooled to
Al-Chayah, Omar   +2 more
core   +1 more source

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