Adsorption/co-precipitation—reverse osmosis system for boron removal

Turek, Marian; Dydo, Piotr; Trojanowska, J.; Campen, Adam

doi:10.1016/j.desal.2006.02.056

Cited by 59 publications

(22 citation statements)

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“…There is no universal method for the removal of boron from water [7]. Main processes for boron removal include adsorption [8,9], coagulation [10], reverse osmosis [11][12][13][14], electrodialysis [15], etc. The adsorption process is extensively used [16,17].…”

Section: Introductionmentioning

confidence: 99%

Ceramic foam supported active materials for boron remediation in water

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Ceramic foam supported active materials for boron remediation in water

et al. 2015

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“…La eliminación de contaminantes se produce por precipitación. La principal desventaja es la baja eficiencia [48].…”

Section: Precipitación Con áLcalisunclassified

Aplicaciones estratégicas de la Nanofiltración para el tratamiento de las aguas en la industria cerámica

Salvador¹,

Cayetano²

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“…Many of these processes have been used as portions of existing water treatment facilities. For example, Turek, et al (2006) used iron, nickel and aluminum hydroxides on landfill leachate RO concentrate to remove boron to levels less than 1 mg B/L.…”

Section: Adsorption and Co-precipitationmentioning

confidence: 99%

“…A promising alternative to adsorption is co-precipitation in which a contaminant is removed during the formation of solids instead of attaching to solids already produced. Several studies showed better boron removal for co-precipitation compared to adsorption (Parks and Edwards 2007, Remy, Muhr and Ouerdiane 2005, Turek, et al 2006.…”

Section: Introductionmentioning

confidence: 99%

“…However, reported boron absorption/precipitation methods using magnesium, aluminum and various other metal hydroxides typically require large volumes of adsorbent and produce large quantities of sludge, making them uneconomical for many industries (Parks & Edwards, 2005;Turek, Piotr, Trojanowska, & Campen, 2006;Remy, Muhr, & Ouerdiane, 2005;Garcia-Soto & Camacho, 2006). A promising alternative to adsorption is co-precipitation in which a contaminant is removed during the formation of solids instead of attaching to solids already produced.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Boron From Produced Water by Co-Precipitation / Adsorption for Reverse Osmosis Concentrate

Rahman¹,

Nelson²,

Lundquist³

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Removal of Boron from Produced Waterby Co-precipitation / Adsorption for Reverse Osmosis Concentrate Imran RahmanCo-precipitation and absorption methods were investigated for removal of boron from produced water, which is groundwater brought to the surface during oil and natural gas extraction. Boron can be toxic to many crops and often needs to be controlled to low levels in irrigation water. The present research focused on synthetic reverse osmosis (RO) concentrate modeled on concentrate expected from a future treatment facility at the Arroyo Grande Oil Field on the central coast of California. The produced water at this site is brackish with a boron concentration of 8 mg/L and an expected temperature of 80°C. The future overall produced water treatment process will include lime softening, micro-filtration, cooling, ion exchange, and finally RO. Projected boron concentrations in the RO concentrate are 20 to 25 mg/L. Concentrate temperature will be near ambient. This RO concentrate will be injected back into the formation. To prevent an accumulation of boron in the formation, it is desired to reduce boron concentrations in this concentrate and partition the boron into a solid sludge that could be transported out of the area. v The primary method explored for boron removal during this study was adsorption and co-precipitation by magnesium chloride. Some magnesium oxide tests were also conducted. Jar testing was used to determine the degree of boron removal as a function of initial concentration, pH, temperature, and reaction time. Synthetic RO concentrate was used to control background water quality factors that could potentially influence boron removal. The standard synthetic RO concentrate contained 8 g NaCl/L, 150 mg Si/L and 30 mg B/L. After synthetic RO concentrate was prepared, amendments (e.g. sulfate, sodium chloride) were added and the pH adjusted to the desired value. Each solution was then carried through a mixing and settling protocol (5 min at 200 RPM, 10 min at 20 RPM, followed by 30 min settling and filtration). Boron concentrations from the jar tests were determined using the Carmine colorimetric method.Boron removal with magnesium chloride was greatest at a pH of 11.0. At this pH 87% of boron was removed using 5.0 g/L MgCl 2 •6H 2 O at 20°C. Mixing time did not greatly affect boron removal for mixing periods of 5 to 1321 minutes. This result indicates equilibrium was achieved during the 45-min experimental protocol.Maximum boron removal was observed in the temperature range of 29°C to 41°C. At 68°C boron removal decreased five-fold compared to the reduction observed at 29°C to 41°C. For treatment of the cool concentrate, this relatively low optimal temperature vi range gives magnesium chloride an advantage over magnesium oxide, which is effective only at high temperatures.Neither sodium chloride nor sodium sulfate affected boron removal by magnesium chloride for the chloride and sulfate concentrations expected in the produced water at this site. In contrast, silica did inhibit boron rem...

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Adsorption/co-precipitation—reverse osmosis system for boron removal

Cited by 59 publications

References 10 publications

Ceramic foam supported active materials for boron remediation in water

Ceramic foam supported active materials for boron remediation in water

Aplicaciones estratégicas de la Nanofiltración para el tratamiento de las aguas en la industria cerámica

Removal of Boron From Produced Water by Co-Precipitation / Adsorption for Reverse Osmosis Concentrate

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