Separation technologies for metals recovery from industrial wastes

Chmielewski, A.G.; Urbański, T.; Migdal, W.

doi:10.1016/s0304-386x(96)00090-4

Cited by 226 publications

(81 citation statements)

References 7 publications

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“…Pour les seuls États-Unis, la production annuelle de déchets générés par les industries minière, métallurgique et de transformation de métaux a été estimée en 1987 à 1.8 milliards de tonnes (BROOKS, 1991). Le traitement des effluents contenant des métaux a fait l'objet de nombreux efforts de recherche et de développe-ment aux cours des dernières années (BROOKS, 1986(BROOKS, ,1991CHMIELEWSKI et al, 1997). Le tableau 1 illustre quelques exemples de sources et de plages de concentrations de divers métaux présents dans des effluents industriels.…”

Section: -Introductionunclassified

État du développement technologique en matière d'enlèvement des métaux des effluents industriels

Blais¹,

Dufresne²,

Mercier³

2005

rseau

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Cette étude trace un profil des diverses technologies utilisées et en développement pour la séparation et/ou la récupération des métaux dans les effluents industriels. Les principes de fonctionnement de ces technologies sont abordés, ainsi que leurs avantages et limites d'utilisation. Les procédés d'enlèvement et de récupération des métaux comprennent les techniques de précipitation (formation d'hydroxydes, de carbonates, de sulfures, etc.) et coprécipitation (sels de fer et d'aluminium, etc.), d'adsorption (sable, cellulose, charbon activé, pyrite, ciment, lignite, mousse de tourbe, sciure de bois, etc.) et de biosorption (bactéries, levures, moisissures, algues marines et d'eaux douces), d'électrodéposition et d'électrocoagulation, de cémentation, de séparation par membranes (osmose inverse et électrodialyse), d'extraction par solvant (acides carboxyliques, amines aliphatiques ou aromatiques, acides aminés, composés phénoliques, phosphates alkyl, etc.), et d'échange d'ions (résines naturelles et synthétiques). La précipitation ou la coprécipitation représentent les procédés les plus largement utilisés et étudiés pour l'enlèvement des métaux des effluents industriels, suivis des techniques d'adsorption. Les procédés plus sophistiqués tels que l'électrodéposition, l'extraction par solvant, la séparation par membranes et l'échange d'ions, bien que largement utilisés dans les procédés métallurgiques, sont relativement peu employés et examinés pour le traitement des effluents industriels. La biosorption a fait l'objet de plusieurs travaux de recherche au cours des dernières années et représente une option intéressante pour le traitement de divers types d'effluents contenant de faibles concentrations en métaux. Finalement, le recyclage et la gestion optimale des effluents constitue une avenue de plus en plus suivie par les industries soucieuses de satisfaire aux nouvelles réglementations et législations.This study is dedicated to the review of the different technologies used and evaluated for the removal and/or recovery of metals from industrial effluents. The principles involved in these technologies are discussed, as well as the advantages and limits associated with these processes. The metal removal and recovery processes include the following techniques: precipitation, adsorption and biosorption, electrowinning and electrocoagulation, cementation, membrane separations, solvent extraction and ion exchange.Precipitation and coprecipitation are the most used and studied methods for metal removal from industrial waste waters. The method of precipitation used most often to remove metals from waste water consists of precipitating them in the form of hydroxides. The usual procedure involves the addition of chemicals such as lime (CaO or Ca(OH)2), Mg(OH)2, NaHCO3, Na2 CO3, (NH4)2 CO3, NaOH or NH4 OH. The precipitation of metals by carbonates or sulphides is an effective alternative to hydroxide precipitation. The use of carbonates allows the precipitation of metals to occur at pH values lower than those necessary with th...

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Section: -Introductionunclassified

État du développement technologique en matière d'enlèvement des métaux des effluents industriels

Blais¹,

Dufresne²,

Mercier³

2005

rseau

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“…The surface treatment (ST) industry is particularly affected by many of the chemicals mentioned [5][6][7][8][9]. Indeed, among industrial activities as a whole, ST is currently considered to be one of the sectors that consumes the most water and chemicals, and therefore one of the largest producers of wastewater, although a huge effort has been made in water treatment for over 20 years by ST plants [8,9].…”

Section: Introductionmentioning

confidence: 99%

Analytical Monitoring of the Chemicals Present in the Discharge Water Generated by the Surface Treatment Industry

Morin‐Crini¹,

Druart²,

Gavoille³

et al. 2013

JEP

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Industrial discharge water, and especially that from the surface treatment industry (ST), contains non-negligible amounts of pollutants even though the legislation is fully respected. In spite of this, no detailed studies list the exact chemical composition of these effluents. The present study reports the results of analyses performed over a 6-month period involving 15 standard water parameters. Over 160 substances including 33 metals, 58 volatile organic compounds (VOCs), 16 polycyclic aromatic hydrocarbons (PAHs), 24 chlorophenols (CPs), 16 alkylphenols (APs), 5 chloroanilines (CAs) and 7 polychlorobiphenyls (PCBs) were monitored. The industrial effluents presented polycontamination involving metals, minerals and organics with a high degree of qualitative and quantitative variability. Of the 160 substances monitored, 46 were regularly found: 25 inorganics including 8 metals (Co, Cr, Cu, Fe, Ni, Pb, Sn, Zn) and 21 organics (4 PAHs, 10 VOCs, 4 CPs and 3 APs). Eighteen were systematically presented at quantifiable levels.

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“…When there are exploited, the majority of those products may become the potential raw material for the silver reclamation. It is now being estimated that about a half of worldwide production of silver is a result of the reclamation of its various raw materials and wastes, which is a phenomenon of growing tendency [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

The uptake of silver(I) from chloride solutions by amine extractants

Wejman

Pilśniak-Rabiega

2017

E3S Web Conf.

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Abstract. The amine extractants, bis(2-ethylhexyl)amine, N,N-dimethylethanolamine, and trioctylamine were used to recover silver(I) ions from chloride solutions. The effect of the pH, contact time, extractant concentration and reextraction were studied. It was found that extraction of silver(I) depended on the pH, extractant concentration and strongly on the contact time. Reextraction of Ag(I) ions from the loaded organic phase showed that the metal can be removed in over 50% for the three extractant using sodium hydroxide. The recovery of silver from the chloride leaching solutions were above 85% for bis(2-ethylhexyl)amine, above 58% for N,N-dimethylethanolamine, and above 70% for trioctylamine.

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Separation technologies for metals recovery from industrial wastes

Cited by 226 publications

References 7 publications

État du développement technologique en matière d'enlèvement des métaux des effluents industriels

État du développement technologique en matière d'enlèvement des métaux des effluents industriels

Analytical Monitoring of the Chemicals Present in the Discharge Water Generated by the Surface Treatment Industry

The uptake of silver(I) from chloride solutions by amine extractants

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