Impurity control in the production of boric acid from colemanite in the presence of propionic acid

Bulutçu, A. Nusret; Ertekin, Can; Çelikoyan, Murat

doi:10.1016/j.cep.2007.12.012

Cited by 27 publications

(21 citation statements)

References 2 publications

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“…In the ultrasonic extraction procedure, the experimental conditions specified in the experimental design were used ( Table 2). The content of boric acid in each filtrate was then determined by the conductometric method [18]. Boric acid yield (%) was calculated according to equation 1:…”

Section: Stati̇sti̇cal Analysis Of Central Composite Design Without mentioning

confidence: 99%

Çevre Dostu Ultrasonik Destekli Ekstraksiyon kullanılarak AuPdNi Tozlarının Sentezi ve Kolemanit’ten Borik Asit Elde Edilmesi: Tepki Yüzey Metodolojisi İle Optimizasyonu

Gezer

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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In this study, simple ultrasonic assisted extraction was proposed as the environmental method at all stages of catalyst synthesis.A homogeneous catalyst was synthesized from high grade monodisperse gold-palladiumnickel nanoparticles using ultrasonic assisted extraction method (UAE) instead of conventional methods to obtain boric acid from colemanite.The most important advantage of this method is that AuPdNi nanoparticles can be easily separated and used repeatedly for further studies. Because of this feature, increasing amount of boric acid obtained from colemanite using AuPdNi nanocatalyst was investigated.For the test parameters, solvent/solids ratio, pH, extraction time and extraction temperature were used for extraction. Responsive Surface Methodology (RSM) method was used to determine optimum conditions. In this study, it was determined that presence of AuPdNinanocatalyst significantly increased boric acid activity. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses were performed for the characterization of nanomaterials. According to the results of the RSM test program, boric acid yield was found to be 95.73% with the aid of AuPdNi nanocatalyst.

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Section: Stati̇sti̇cal Analysis Of Central Composite Design Without mentioning

confidence: 99%

Çevre Dostu Ultrasonik Destekli Ekstraksiyon kullanılarak AuPdNi Tozlarının Sentezi ve Kolemanit’ten Borik Asit Elde Edilmesi: Tepki Yüzey Metodolojisi İle Optimizasyonu

Gezer

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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“…Thus, in order to improve alternative boric acid production process, many studies have been carried out by researchers. The researchers have concentrated to clarify the kinetics and mechanism of boron minerals dissolution (particularly colemanite and ulexite) in various inorganic and organic leaching solutions (Taylan et al, 2007;Bulutçu et al, 2008;Ekmekyapar et al, 2010;Künkül et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Cinética de la disolución de ulexita calcinada en soluciones de sulfato de amonio

2018

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La ulexita es uno de los minerales de boro, que incluye una cantidad considerable de agua de hidratación. Se puede usar como materia prima en la producción de compuestos de boro. Una parte del agua existente en la composición química de la ulexita puede eliminarse de la matriz sólida aplicando tratamiento de deshidratación que permite obtener una estructura porosa, que aumenta la velocidad de reacción. En el presente trabajo, se estudió el efecto de la temperatura de deshidratación sobre la cinética de disolución de ulexita en soluciones de sulfato de amonio, en un reactor discontinuo estudiando los parámetros de concentración de solución, relación sólido/líquido, velocidad de agitación y la temperatura de reacción. Se determinó que la velocidad de disolución del material calcinado aumentaba al aumentar la concentración de la solución y la temperatura de reacción y con la disminución de la relación de sólido/líquido. La velocidad de disolución más alta se alcanzó con la muestra calcinada a 150 °C. Se encontró que la velocidad de disolución se ajusta al modelo pseudohomogéneo de primer orden. La energía de activación del proceso de disolución se estimó en 42 kJ·mol-1.

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“…In the conventional boric acid production process, colemanite mineral is reacted with aqueous sulfuric acid, whereby gypsum is formed (Equation ). Precipitated gypsum is removed by filtration and boric acid is crystallized by cooling the filtrate . The purity of the boric acid product is >99.9%.…”

Section: Introductionmentioning

confidence: 99%

“…Precipitated gypsum is removed by filtration and boric acid is crystallized by cooling the filtrate. 1 The purity of the boric acid product is >99.9%. (1) The main disadvantage of this process is the high consumption of sulfuric acid and the accumulation of a large amount of gypsum.…”

Section: Introductionmentioning

confidence: 99%

The electrochemical production of boric acid

Elbeyli

Turan

Kalafatoğlu

2014

J of Chemical Tech & Biotech

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BACKGROUND Boric acid (H3BO3) was electrochemically produced from borax pentahydrate (Na2B4O7.5H2O) using membrane electrolysis, and a flow diagram of the production process was developed. The effect of different catholyte concentrations (10, 20 and 30% aqueous NaOH) and current densities (1.2, 1.8 and 2.9 kA m−2) on current efficiency was studied. The electrical power consumption per ton of boric acid produced was calculated and the qualities of boric acid products were determined. RESULTS The current efficiency ranged between 94% and 74% depending on operating conditions. Optimum process conditions for electrochemical boric acid production were determined to be 1.8 kA m−2 current density and 20% aqueous NaOH catholyte concentration. In these conditions, the specific energy consumption for 1 ton of boric acid produced was calculated at 2000 kWh (i.e. specific energy consumption 2000 kWh ton−1 at 7.5 V and 1.8 kA m−2). CONCLUSIONS The production of boric acid by an electrochemical method is more attractive than the current commercial process and other production methods described in the literature. The process is environment friendly since it does not generate solid waste, and oxygen is produced instead of chlorine as in the well‐known chlor‐alkali process. © 2014 Society of Chemical Industry

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Impurity control in the production of boric acid from colemanite in the presence of propionic acid

Cited by 27 publications

References 2 publications

Çevre Dostu Ultrasonik Destekli Ekstraksiyon kullanılarak AuPdNi Tozlarının Sentezi ve Kolemanit’ten Borik Asit Elde Edilmesi: Tepki Yüzey Metodolojisi İle Optimizasyonu

Çevre Dostu Ultrasonik Destekli Ekstraksiyon kullanılarak AuPdNi Tozlarının Sentezi ve Kolemanit’ten Borik Asit Elde Edilmesi: Tepki Yüzey Metodolojisi İle Optimizasyonu

Cinética de la disolución de ulexita calcinada en soluciones de sulfato de amonio

The electrochemical production of boric acid

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