Removal of Fe(III) from sulfuric acid leaching solution of phosphate ores with bisphosphonic acids

Xu, Chengjin; Li, Ling; Zhang, Miaomiao; Meng, Xiao; Peng, Xiujing; Zeb, Shah; Lu, Yongqiang; Qiao, Dan; Cui, Yu; Sun, Guoxin

doi:10.1016/j.hydromet.2021.105799

Cited by 7 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main methods for removing Fe include chemical precipitation, − organic solvent extraction, − ion exchange resin, − recrystallization, , and so on. The chemical precipitation approach suffers from the substantial entrainment losses of Al 3+ while removing Fe 3+ due to the comparable precipitation pH of Al 3+ and Fe 3+ .…”

Section: Introductionmentioning

confidence: 99%

Phase Diagram of the Al(NO₃)₃–Fe(NO₃)₃–H₂O(−HNO₃) System and Its Application in the Separation of Al³⁺ and Fe³⁺

Shi

Shao

et al. 2023

J. Chem. Eng. Data

View full text Add to dashboard Cite

An original technology named HNO3 pressure leaching has been proposed by our team to leach Al from coal gangue and fly ash. Although the preliminary separation of Al and Fe had been achieved during leaching, a small amount of Fe impurity was still unavoidably dissolved into the leach liquor. To obtain pure Al2O3 during subsequent pyrolysis, it is imperative to synchronously remove Fe3+ during the crystallization of Al(NO3)3·9H2O. Herein, the phase equilibria of the Al(NO3)3–Fe(NO3)3–H2O(−HNO3) system at 25–40 °C and 0–8.12 mol kg–1 of HNO3 molality were investigated. The results indicated that the ternary system was a simple cosaturated type consisting of an immutable point, two univariate curves, and two crystallization regions. Notably, the solubility and crystallization region of Al(NO3)3·9H2O were barely impacted by acidity, while the opposite was true for Fe(NO3)3·9H2O. This finding was instructive for the crystallization of Fe(NO3)3·9H2O from the liquor with high Fe and low Al. Moreover, a high crystallization yield could be obtained at low temperatures. Finally, an appropriate crystallization procedure was provided. This study is expected to provide basic data and theoretical support for the crystallization and separation of mixed nitrates containing Al and Fe.

show abstract

Section: Introductionmentioning

confidence: 99%

Phase Diagram of the Al(NO₃)₃–Fe(NO₃)₃–H₂O(−HNO₃) System and Its Application in the Separation of Al³⁺ and Fe³⁺

Shi

Shao

et al. 2023

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…However, the data obtained in these studies are quite contradictory. Thus, Karpacheva and Ilozheva (1969) reported that the extraction proceeds in the kinetic region, Ciceri et Apart from D2EHPA, two new extractants, such as N, N-n-octylamine di(methylene phenylphosphonic acid) (OADMPPA) and N, N-n-hexadetamine di(methylene phenylphosphonic acid) (HADMPPA), can be used to selectively recover iron(III) from a mixture of sulfuric and phosphoric acids (Xu et al 2022;Tran et al 2019). The results showed that both OADMPPA and HADMPPA have good extraction ability toward iron(III) even at higher sulfuric acid concentration.…”

Section: Introductionmentioning

confidence: 99%

“…The results showed that both OADMPPA and HADMPPA have good extraction ability toward iron(III) even at higher sulfuric acid concentration. However, effective stripping of iron(III) from the loaded organic phase is obviously very di cult but it can be achieved using oxalic acid (Xu et al 2022. Tran et al (2019 used mixtures of extractants, in particular, Aliquat 336 and D2EHPA to extract iron(III).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Iron(III) extraction from sulfate solutions with D2EHPA in the presence of organic proton-donor additives

Grigorieva,

Fleitlikh,

Logutenko

2023

Chem. Pap.

View full text Add to dashboard Cite

The effect of organic proton-donor additives (HA) on the extraction of iron(III) from sulfuric acid solutions with di(2-ethylhexyl)phosphoric acid (HR) in decane and toluene was studied. It was shown that adding the additives into the organic phase causes an antagonistic effect. Iron(III) extraction in the presence of additives decreases in the series octyl alcohol ≈ 4-tert-butyl phenol > octanoic acid. The low activity of octanoic acid is attributed to self-association and the formation of dimers in the organic phase, which signi cantly prevents the formation of intermolecular associates between D2EHPA and monocarboxylic acid. Octanol and 4-tert-butyl phenol form stable associates with D2EHPA leading to a decrease in the ferric iron extraction e ciency thus facilitating e cient iron stripping from the loaded organic phase. In the D2EHPA and octyl alcohol system [FeR 2 •HR 2 ] is formed. The stripping of iron from the HR and octyl alcohol mixtures was shown to be much more e cient than that from D2EHPA alone and can be successfully achieved using ~4.5 mol/L H 2 SO 4 or H 2 SO 4 (~3.5 mol/L) and NaCl (1.0 mol/L) mixture.Extraction systems containing D2EHPA and aliphatic alcohols can be used to recover iron from various industrial solutions, in particular, from those derived from zinc, nickel production, and others.

show abstract

Electric vehicle batteries waste management and recycling challenges: a comprehensive review of green technologies and future prospects

Amusa,

Sadiq,

Alam

et al. 2024

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

Removal of Fe(III) from sulfuric acid leaching solution of phosphate ores with bisphosphonic acids

Cited by 7 publications

References 36 publications

Phase Diagram of the Al(NO₃)₃–Fe(NO₃)₃–H₂O(−HNO₃) System and Its Application in the Separation of Al³⁺ and Fe³⁺

Phase Diagram of the Al(NO₃)₃–Fe(NO₃)₃–H₂O(−HNO₃) System and Its Application in the Separation of Al³⁺ and Fe³⁺

Iron(III) extraction from sulfate solutions with D2EHPA in the presence of organic proton-donor additives

Electric vehicle batteries waste management and recycling challenges: a comprehensive review of green technologies and future prospects

Contact Info

Product

Resources

About

Removal of Fe(III) from sulfuric acid leaching solution of phosphate ores with bisphosphonic acids

Cited by 7 publications

References 36 publications

Phase Diagram of the Al(NO3)3–Fe(NO3)3–H2O(−HNO3) System and Its Application in the Separation of Al3+ and Fe3+

Phase Diagram of the Al(NO3)3–Fe(NO3)3–H2O(−HNO3) System and Its Application in the Separation of Al3+ and Fe3+

Iron(III) extraction from sulfate solutions with D2EHPA in the presence of organic proton-donor additives

Electric vehicle batteries waste management and recycling challenges: a comprehensive review of green technologies and future prospects

Contact Info

Product

Resources

About

Phase Diagram of the Al(NO₃)₃–Fe(NO₃)₃–H₂O(−HNO₃) System and Its Application in the Separation of Al³⁺ and Fe³⁺

Phase Diagram of the Al(NO₃)₃–Fe(NO₃)₃–H₂O(−HNO₃) System and Its Application in the Separation of Al³⁺ and Fe³⁺