Removal of boron dissolved in water

Kluczka, Joanna; Ciba, Jerzy; Trojanowska, J.; Zołotajkin, Maria; Turek, Marian; Dydo, Piotr

doi:10.1002/ep.10180

Cited by 44 publications

(24 citation statements)

References 20 publications

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“…The monolayer sorption capacity (q m = 30 mg g -1 ) as shown in Table 2, was found to be higher than most of the reported sorption capacities (1.00 -2.20 mg g -1 ) (Kluczka et al 2007; Liu and Ismanto 2014).…”

Section: Kinetic Isotherm and Statistical Analysesmentioning

confidence: 84%

“…PS-PVA beads have not been applied to treat boron-contaminated wastewater under fixed-bed operation, and it can be concluded that the synthesized PS-PVA is efficacious and outperforms most of the reported adsorbents for boron removal from aqueous A c c e p t e d M a n u s c r i p t 4 solutions (Man et al 2012;Kluczka et al 2007;Liu and Ismanto 2014). Using response surface methodology (RSM) in this study is to evaluate the performance of the adsorbent under column operation, to decrease the number of column runs, to examine the combined effects of independent variables on the breakthrough curve, and finally to develop a statistical expression to identify the optimum conditions for maximum boron uptake.…”

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confidence: 96%

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Fixed-bed column sorption of borate onto pomegranate seed powder-PVA beads: a response surface methodology approach

Oladipo

Gazi²

2014

Toxicological & Environmental Chemistry

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Pomegranate seed powder (PS) was functionalized with polyvinyl alcohol (PVA) and utilized for boron removal from the aqueous system. Results of BET surface area analysis and Boehm titration indicated notable decrease in total surface area and increase in acidic surface functional groups of PS after PVA modification. Enhanced sorption is indicative of complex formation between diol groups of the PS-PVA and borate ions. Under column test, the saturated sorption capacity of boron was noted to be dependent on flow rate and bed height. The developed central composite design (CCD) was adequate to elucidate the sorption mechanism. Mathematical modeling of the column data was conducted, and a modified-dose-response model was the most suitable to describe the breakthrough curve and observed to be consistent with CCD analysis. This is further supported by extensive error analyses conducted between the model predicted and experimental data.

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Section: Kinetic Isotherm and Statistical Analysesmentioning

confidence: 84%

mentioning

confidence: 96%

Fixed-bed column sorption of borate onto pomegranate seed powder-PVA beads: a response surface methodology approach

Oladipo

Gazi²

2014

Toxicological & Environmental Chemistry

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“…For adsorbent preparation, clinoptilolite and ZrO 2 were used. The preliminary experiments showed that amorphous ZrO 2 had the ability to adsorb boron in contrast to the crystalline form of ZrO 2 , which showed no affinity for oxoborate ions [41]. Therefore in the present study, amorphous ZrO 2 prepared in our laboratory was used for the first time as modifier of clinoptilolite to adsorb boron.…”

Section: Introductionmentioning

confidence: 99%

A new adsorbent for boron removal from aqueous solutions

Kluczka

Korolewicz

Zołotajkin

et al. 2013

Environmental Technology

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A new adsorbent based on natural clinoptilolite and amorphous zirconium dioxide (ZrO2) was prepared for the uptake of boron from fresh water. The sorption behaviour of this adsorbent for boron was investigated using a batch system and found to obey Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The ZrO2 loading level, pH, temperature, contact time, initial boron concentration and adsorbent dose, on the removal of boron were studied. It was found that the removal of boron increased while the adsorbent dose increased and the temperature decreased at an optimum pH (pH = 8) and a contact time of 30 min. At optimum conditions, the maximum boron percentage removal was 75%. According to the D-R model, the maximum capacity was estimated to be > 3 mg B/g of the adsorbent. The adsorption energy value (calculated as 9.13 kJ/mol) indicated that the adsorption of boron on clinoptilolite modified with ZrO2 was physical in nature. The parameters of the adsorption models and the pH investigations pointed to the possibility of a chemisorption process. The thermodynamic parameters (standard entropy deltaS degrees, enthalpy deltaH degrees , and free energy deltaG degrees changes) of boron adsorption were also calculated. The negative value of deltaS degrees indicated a decreased randomness at the solid-solution interface during the boron adsorption. Negative values of deltaH degrees showed the exothermic nature of the process. The negative values of deltaG degrees implied that the adsorption of boron on clinoptilolite modified with amorphous ZrO2 at 25 degrees C was spontaneous. It was considered that boron dissolved in water had been adsorbed both physically and chemically on clinoptilolite modified with 30% ZrO2.

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“…Besides, high costs of chemical substances, as well as the costs of sludge utilization and disposal make this process of boron elimination inadvisable in many cases [8,9]. Activated carbon, impregnated activated carbon and silty materials, due to their high sorption capacity, proved to be ineffective and unprofitable when used in a large scale [10,11]. A liquid-liquid extraction technology offers a possibility of retrieving boron for market purposes from industrial wastewater, but it is only profitable when the initial concentration of boron in solution is at least 3 g/L [12,13].…”

Section: Introductionmentioning

confidence: 99%

Chemical treatment of wastewater from flue gas desulphurisation

Pasiecznik

Szczepaniak

2017

E3S Web Conf.

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Abstract. The article presents results of laboratory tests of removing boron and arsenium from non-ideal solutions using double-layered magnesium/aluminium hydroxides (Mg/Al Double-Layered Hydroxide -DLH) produced with nitrate-chloride method. In research, wastewater from an installation for flue gas desulfurization was examined. Double-layered hydroxides are perfect absorbents for anionic compounds. The research proved high effectiveness of preparation with reference to arsenium, as well as confirmed the effect of presence of sulfatic and arsenate ions on the effectiveness of boron removal. On the basis of research on absorption kinetics a theoretical dose of DLH/NO3-Cl/M preparation was calculated and compared with a dose that ensures emimination of boron below the limit standarized by the national regulations. Application of double-layered magnesium/aluminium hydroxides for boron elimination from industrial wastewater requires significantly higher doses of preparation than those calculated in model investigations. It is due to the priority of removal of multivalent ions, such as sulfatic, arsenate or phosphate ions, by DLH/NO3-Cl/M.

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Removal of boron dissolved in water

Cited by 44 publications

References 20 publications

Fixed-bed column sorption of borate onto pomegranate seed powder-PVA beads: a response surface methodology approach

Fixed-bed column sorption of borate onto pomegranate seed powder-PVA beads: a response surface methodology approach

A new adsorbent for boron removal from aqueous solutions

Chemical treatment of wastewater from flue gas desulphurisation

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