Electrodialysis reversal (EDR) and ion exchange as polishing treatment for perchlorate treatment

Roquebert, Vincent; Booth, Stephen D.J.; Cushing, Robert S.; Crozes, Gil; Hansen, Ed

doi:10.1016/s0011-9164(00)90026-2

Cited by 44 publications

(22 citation statements)

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“…A range of perchlorate solution (20,50,100,200,500, and 700 mg L −1 ) was equilibrated with GFH and the perchlorate-sorbed GFH samples were analyzed with Raman spectroscopy. It has been reported that sodium perchlorate exhibits a peak at 952 cm −1 indicating the bonding environment of perchlorate in the solid is quite different from that of free perchlorate ion in the solution [40].…”

Section: Raman Spectroscopic Analysismentioning

confidence: 99%

“…Various treatment technologies have been investigated for perchlorate removal from water, e.g. microbial reduction [5,16], reduction by zero-valent iron combined with perchlorate-reducing microorganisms [17,18], ion exchange [19], membrane technologies [20], electrochemical reduction [21] and adsorption [22][23][24][25][26]. The shortcomings of most of these methods are high operational and maintenance costs, secondary pollution and complicated procedure involved in the treatment.…”

Section: Introductionmentioning

confidence: 99%

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Perchlorate removal from aqueous solutions by granular ferric hydroxide (GFH)

Kumar

Bhatnagar

Choi

et al. 2010

Chemical Engineering Journal

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Section: Raman Spectroscopic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Perchlorate removal from aqueous solutions by granular ferric hydroxide (GFH)

Kumar

Bhatnagar

Choi

et al. 2010

Chemical Engineering Journal

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“…An ED reversal pilot unit was installed at an uncontaminated well, providing groundwater with high hardness, alkalinity, and total dissolved solids (TDS) (Roquebert et al 2000). Various perchlorate levels (of up to 130 lg/l) were spiked into the feed water to test the ED process performance.…”

Section: Electrodialytic Membrane Processesmentioning

confidence: 99%

Removal of inorganic anions from drinking water supplies by membrane bio/processes

Велизаров

Crespo

Reis

2004

Rev Environ Sci Biotechnol

108

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This paper is designed to provide an overview of the main membrane-assisted processes that can be used for the removal of toxic inorganic anions from drinking water supplies. The emphasis has been placed on integrated process solutions, including the emerging issue of membrane bioreactors. An attempt is made to compare critically recently reported results, reveal the best existing membrane technologies and identify the most promising integrated membrane bio/processes currently being under investigation. Selected examples are discussed in each case with respect to their advantages and limitations compared to conventional methods for removal of anionic pollutants. The use of membranes is particularly attractive for separating ions between two liquid phases (purified and concentrated water streams) because many of the difficulties associated with precipitation, coagulation or adsorption and phase separation can be avoided. Therefore, membrane technologies are already successfully used on large-scale for removal of inorganic anions such as nitrate, fluoride, arsenic species, etc. The concentrated brine discharge and/or treatment, however, can be problematic in many cases. Membrane bioreactors allow for complete depollution but water quality, insufficiently stable process operation, and economical reasons still limit their wider application in drinking water treatment. The development of more efficient membranes, the design of cost-effective operating conditions, especially long-term operations without or with minimal membrane inorganic and/or biological fouling, and reduction of the specific energy consumption requirements are the major challenges.

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“…Over the past twenty years EDR has earned a reputation as a membrane desalination process that works economically and reliably on surface water supplies, reuse water and some specific industrial applications when designed and operated properly. Some applications of ED/EDR were its use to reduce inorganics like radium (Hays, 2000), perchlorate (Roquebert et al, 2000), bromide , fluoride (GE W&P, 2010), iron and manganese (Heshka, 1992) and nitrate (Menkouchi Sahlia et al, 2008) in drinking water. In addition the technology can be used to recycle municipal and industrial wastewater (Broens et al,.…”

Section: Introductionmentioning

confidence: 99%