Experimental Study of Competitive Adsorption of Heavy Metals and Organic Matter for the Phosphoric Acid Purification

Zermane, Samah; Méniai, Abdeslam-Hassen

doi:10.1016/j.egypro.2012.05.103

Cited by 13 publications

(3 citation statements)

References 3 publications

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“…Hence, the removal of these organics seems to be an important step for the production of decontaminated phosphoric acid. The utilization of activated bentonite [65], [66], activated carbon and coal [67] for the adsorption of organic matter was investigated.…”

Section: Wet Processmentioning

confidence: 99%

Utilization of Apatite Ores

Ptáček¹

2016

Apatites and Their Synthetic Analogues - Synthesis, Structure, Properties and Applications

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Phosphate rock is an important mineral commodity used in the chemical industry and production of food. The first section of ninth chapter of this book introduces utilization of apatite ores for manufacturing of phosphorus. The second part deals with production of phosphoric acid via wet and thermal process and utilization of byproducts such as phosphogypsum, phosphorous slag and ferrophosphorus. The last section of this chapter describes the methods for production of fertilizers, such as supephosphates, Thomas slag, ammonium phosphates, thermophosphates, etc., and the chapter ends with environmental demand of phosphate fertilizers.

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Section: Wet Processmentioning

confidence: 99%

Utilization of Apatite Ores

Ptáček¹

2016

Apatites and Their Synthetic Analogues - Synthesis, Structure, Properties and Applications

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“…In these industrial applications, the purity requirement for PA, especially for wet-process phosphoric acid (WPA), is extremely high. Some techniques for purifying PA have recently been developed, such as crystallization [2,3], ion exchange [4,5], adsorption [6,7], and solvent extraction [8][9][10]. Among these, solvent extraction is an ideal purifying approach because of its low energy consumption, comparatively simpler production technology and equipment, and ease of automating batch production.…”

Section: Introductionmentioning

confidence: 99%

Variation of Extraction Yield and Droplet Size during Emulsification Solvent Extraction of Wet-Process Phosphoric Acid

Cao

2023

SERDJ

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This research focuses on emulsification solvent extraction for purifying wet-process phosphoric acid. The effects of various parameters, including stirring speed, phase ratio and emulsification time on the extraction yield and droplet size distribution were investigated. The optimal conditions were determined. The influence of time and physical properties of solvent on average droplet diameter was fitted by dimensional analysis. The results showed that the mathematical model has a strong agreement with the experimental data. This model was reliable to predicting the droplet size in different conditions of manufacturing emulsion.

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“…WPA can be purified by many techniques such as extraction (Hamdi and Hannachi, 2012; Hannachi et al, 2007; Ye and Li, 2013), nanofiltration, reverse osmosis, liquid membrane (Gonzalez et al, 2002; Urtiaga et al, 2000), adsorption (El‐Bayaa et al, 2011; Unob et al, 2007; Zermane and Meniai, 2012), crystallization (Chen et al, 2013a, b), and precipitation (Ennaassia et al, 2002; Goldstein, 1974). These techniques suffer from problems such as making secondary pollutions, high costs, low selectivity, high energy consumption, and is ineffective at low concentrations (Gilmour, 2013).…”

Section: Introductionmentioning

confidence: 99%

Removal of Trace Metal Impurities from Pretreated Phosphoric Acid by Foam Fractionation

Bakhshi

Mortaheb

Amini

2021

J Surfact & Detergents

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Demands for phosphoric acid are growing rapidly in various industries. This has highlighted the importance of optimizing its production and purification methods. Phosphoric acid can be produced by a wet process. However, due to the presence of many organic and inorganic impurities in the wet product, purification of the resulting product is a major concern in this industry. Removal of trace metal impurities (such as magnesium, cadmium, chromium, zinc, etc.) from produced phosphoric acid in a wet process was investigated by foam fractionation in a semi-batch setup using sodium dodecyl sulfate (SDS) as the surfactant. Effects of inlet air velocity, surfactant concentration, and surfactant selectivity were investigated. The optimum air velocity and surfactant concentration were obtained as 0.020 cm/min and 0.7 g/L, respectively. At the optimum condition, the total removal efficiency and enrichment factor reached were 70.2% and 4.39, respectively, while the acid loss was 8.3%. The total metal removal efficiency was increased to 95.3% in a two-stage experimental run.

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Experimental Study of Competitive Adsorption of Heavy Metals and Organic Matter for the Phosphoric Acid Purification

Cited by 13 publications

References 3 publications

Utilization of Apatite Ores

Utilization of Apatite Ores

Variation of Extraction Yield and Droplet Size during Emulsification Solvent Extraction of Wet-Process Phosphoric Acid

Removal of Trace Metal Impurities from Pretreated Phosphoric Acid by Foam Fractionation

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