Some recent developments in ion-exchange resins

Duyvesteyn, Saskia

doi:10.1007/s11837-998-0357-8

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…Mining operations and related technologies, metal treatment, automobile emissions (Harrison et al 1981;Howard and Sova 1993), Pb based paints (Gooch 1993), industrial emissions and wastes (Oyler 1990) and recycling of batteries (Elliot and Brown 1989;Papassiopi et al 1999) constitute important sources of metal pollution. Several sites contaminated by heavy metals are located at military bases, shooting fields, armament factories and electroplating units (Marino et al 1997).…”

Section: Metal Contaminants In Soil and Groundwatermentioning

confidence: 99%

“…Strong acid resins contain sulfonic exchange sites, and weak acid resins are characterized by carboxylic groups. Sulfonic group (-SO 3~ H + ) of a polystyrene resin, or, a chelating resin with iminodiacetic group are commonly used for extraction of metal cations from solutions (Vater et al 1990;Duyvesteyn 1998). Commonly, treatment using diluted acid is employed for regeneration of resin (Brooks 1986).…”

Section: Ion Exchangementioning

confidence: 99%

See 1 more Smart Citation

Metal Removal

Blais¹,

Brar²,

Meunier³

et al. 2007

Remediation Technologies for Soils and Groundwater

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Section: Metal Contaminants In Soil and Groundwatermentioning

confidence: 99%

Section: Ion Exchangementioning

confidence: 99%

Metal Removal

Blais¹,

Brar²,

Meunier³

et al. 2007

Remediation Technologies for Soils and Groundwater

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“…Ion Exchange. Duyvesteyn (1999) reviewed recent developments in ionexchange-based separation processes in the field of metallurgy. Meyers (1999) discussed the chemistry of weak acid cation resins and explored the various potential uses of the resins for the removal of metals from wastewater.…”

mentioning

confidence: 99%

Electronics and metal finishing and processing

Lin¹,

Reed²

1996

Water Environment Research

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This article provides a review of recent literature on water pollution control and wastewater treatment relating to electronics and metal finishing and processing industries. The review is organized into a number of sections providing information on regulatory issues, heavy metal removal technologies, cyanide treatment, metal cleaning and metal working fluid treatment, and pollution prevention and waste minimization case studies. REGULATORY ASPECTSSkefich (1999) discussed the US Environmental Protection Agency's (EPA) metal products and machinery (MP&M) effluent regulations. EPA estimated a reduction of toxic pollution of surface water by approximately 1 million pounds per year, and all MP&M wastewater control systems must comply with the regulations by the December 2002 deadline. Hayes (1999) examined environmental issues of specific importance to metal finishers. Various new and complex developments in the Clean Water Act, CleanAir Act, and hazardous waste regulations were discussed. Slanker (1999) provided a review of the ISO 14001 standard, which provides companies with the proper structure to implement an environmental management system. The U.S. EPA has indicated that metal finishing companies which adopt the standard may be more likely to avoid undesired governmental scrutiny and the resulting financial and legal penalties. Bode (1998) reported that the introduction of clear limits for the indirect discharge of heavy metals in Germany has greatly reduced the emissions from metal plating industry.Despite the more than 500 metal plating workshops within the Ruhr catchment area the current requirements for water quality of river water are met in the Ruhr. Madono (1999) pointed out that environmental issues have shifted from regional industrial pollution to city-type and living-oriented issues or global environmental issues.The environmental issues surrounding electronics industry, law regulations in Japan and Europe, and the efforts to promote the environmental activities in the industry and Sharp were discussed. The use of an environmental management system (EMS) was discussed and the concept of environmental performance was determined (Nagel, 1999). The environmental performance in a printed circuit board production facility was determined using 7 environmental indicators related to material use, use of aiding compounds, water use, energy use, emissions, waste and packing material. METAL TREATMENTMetal Precipitation. According to Weber (1999), the metal finishing industry discharges substantially more wastewater than any other industrial sector. Factors determining the selection of a treatment system include the pollutant type to be treated, the pollutant loading, the hydraulic flow rate, and the stringency of environmental regulations. Conventional wastewater treatment involves the use of chemicals to react with soluble pollutants to create insoluble by-product precipitants, which are removed by physical separation through clarification and/or filtration. A review of current chemical precipitation methods...

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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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Some recent developments in ion-exchange resins

Cited by 3 publications

References 29 publications

Metal Removal

Metal Removal

Electronics and metal finishing and processing

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

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