Sorption of boron on calcium alginate gel beads

Ruiz, Magda; Tobalina, C.; Demey, Hary; Barron-Zambrano, Jesus; Sastre, Ana Marı́a

doi:10.1016/j.reactfunctpolym.2013.01.014

Cited by 33 publications

(16 citation statements)

References 36 publications

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“…Presence of H + at lower pH increased positive charges on the adsorbent surface and reduced the approaching of PQT 2+ on the adsorbent. Some studies and indicated similar result for pH effect.…”

Section: Resultssupporting

confidence: 66%

Comparison Study of Paraquat Herbicide Adsorption by Xerogels: Application of Experimental Design

Shamsodin

Fazli

Nasiri

2018

Env Prog and Sustain Energy

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This study dealt with the Paraquat dichloride herbicide (PQT) adsorption on xerogels. The xerogels were synthesized with tetra methoxy orthosilicate (TMOS) and tetra ethoxy orthosilicate (TEOS) as a precursor. Whereas xerogels have free silanol groups on their surface and PQT has a positive charge as an ion, xerogels have shown a high affinity for the PQT adsorption in aqueous solution. Scanning Electron Microscopy, Fourier Transform‐IR, and BET analysis were characterized xerogels. The effect of four process factors such as PQT dosage, pH, a dose of adsorbent, and time was evaluated by the Box‐Behnken design. Between four parameters, pH was more effective. The second order equation (quadratic model) was also used for the analysis of the experimental data. Additionally, the optimum points for parameters were determined by desirability function in the Experimental Design. Removal Percentages of PQT at the optimum process parameters were found to be 98.05 and 92.83%, for TMOS and TEOS xerogels, respectively. In addition, the isotherm study showed that the Freundlich isotherm indicated better harmonic between experimental and theoretical results. Finally, in the kinetic study, Pseudo‐second order model had a better correlation than Pseudo‐first order model. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S128–S138, 2019

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Section: Resultssupporting

confidence: 66%

Comparison Study of Paraquat Herbicide Adsorption by Xerogels: Application of Experimental Design

Shamsodin

Fazli

Nasiri

2018

Env Prog and Sustain Energy

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“…However, the use of biopolymers for boron adsorption has received little attention in the last decade. The literature describes the possible use of cotton cellulose or chitosan modified with N‐methylglucamine, sugars, polyols, and calcium alginate gel beads . However, although all of these studies discuss adsorption capacity or adsorption rate, none describes a continuous examination of the industrial application of the adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Boron removal from aqueous solutions using alginate gel beads in fixed‐bed systems

Demey

Ruiz

Barron-Zambrano

et al. 2014

J of Chemical Tech & Biotech

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BackgroundA column sorption study was carried out using calcium alginate gel beads as adsorbent for the removal of boron from aqueous solutions. The breakthrough curve was obtained as a function of pH, initial concentration of boron, feed flow rate, adsorbent mass and column diameter. The breakthrough capacity values and adsorption percentage of calcium alginate gel for boron were calculated. Column data obtained at different conditions were described using the Adams–Bohart model and bed-depth service time (BDST), derived from the Adams–Bohart equation to predict breakthrough curves and to determine the characteristic column parameters required for process design.ResultsThe maximum adsorption percentage of boron on calcium alginate gel beads using an initial concentration of boron of 50 mg L−1 at pH 11 and room temperature (20±1°C) was calculated to be 55.14%.ConclusionThe results indicated that calcium alginate can be used in a continuous packed-bed column for boron adsorption. The optimal conditions for boron adsorption were obtained at high pH, higher initial boron concentration, increased column depth and lower flow velocity. © 2014 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…The treated OPW for reuse should follow WHO standards of 0.5 mg/L [19]. Various methods include reverse osmosis, adsorption, ion exchange, electro dialysis, electrocoagulation, and coprecipitation applied for the removal of boron from aqueous systems [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Polyurethane Green Composites: Synthesize, Characterization and Treatment of Boron Present in the Oil Produced Water

Syed¹,

Sawafi²,

Shaik³

et al. 2020

International Journal of Engineering Research and Technology

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Polyurethane (PU) based algae biocomposite is synthesized, characterized and tested for boron removal from oil produced water (OPW). The percentage of algae is varied in the biocomposite and its physical and chemical properties are evaluated. The surface morphology, crystalline structure, thermal stability is characterized using scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FITR) and thermal gravimetric analysis (TGA). The density of synthesized PU/algae composites is in the range of 1.12 and 1.20 g/mL based on content of filler in the PU matrix. Weight losses of the tested specimens in various chemical solutions are less than 10%. The boron removal efficiency is in the range of 84 to 85%, depending upon the algae filler at pH 7.19.

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Sorption of boron on calcium alginate gel beads

Cited by 33 publications

References 36 publications

Comparison Study of Paraquat Herbicide Adsorption by Xerogels: Application of Experimental Design

Comparison Study of Paraquat Herbicide Adsorption by Xerogels: Application of Experimental Design

Boron removal from aqueous solutions using alginate gel beads in fixed‐bed systems

Polyurethane Green Composites: Synthesize, Characterization and Treatment of Boron Present in the Oil Produced Water

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