Recovery of H2SO4 from an acid leach solution by diffusion dialysis

Wei, Chang; Li, Xingbin; Deng, Zhigan; Fan, Gang; Li, Minting; Li, Cunxiong

doi:10.1016/j.jhazmat.2009.11.017

Cited by 71 publications

(27 citation statements)

References 23 publications

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“…Literature [16] presents the results on the recovery of hydrochloric acid from HCl + FeCl 2 mixture and real acid waste solution containing hydrochloric acid, Fe 2+ and Zn 2+ ions. Wei et al [17] studied the recovery of sulphuric acid from model solutions (H 2 SO 4 + FeSO 4 , H 2 SO 4 + VOSO 4 ) and a real acid solution, which is generated from a black shale pressure acid leaching process in the extraction of vanadium from black shale. Lan et al [18] published results on the recovery of an HNO 3 solution from acidic effluents discharged by an electrodialysis plant.…”

Section: -4 -mentioning

confidence: 99%

“…Dialysis and diffusion dialysis, which belong to the group of membrane separation processes, can be investigated in a batch cell [1][2][3][4][5][6][7][8][9][10][11][12][13][14] or in continuous dialyzer [15][16][17][18][19][20][21][22][23]. In the former case, characteristics of the dialysis process are determined from liquid volumes and time dependences of the component concentrations in the individual compartments, while in the latter case the determination of the characteristics is based on the concentrations and volumetric liquid flow rates of all streams at steady state.…”

Section: Introductionmentioning

confidence: 99%

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Continuous dialysis of sulphuric acid and sodium sulphate mixture

Palatý

Bendová

2016

Journal of Membrane Science

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Section: -4 -mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Continuous dialysis of sulphuric acid and sodium sulphate mixture

Palatý

Bendová

2016

Journal of Membrane Science

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“…Sulfuric acid is widely used in numerous applications, including solvent extraction (Li et al, 2012); electroplating; acid leaching of metals (Nenov et al, 1997;Wei et al, 2010); electrolysis; lead-acid storage batteries (Jiang et al, 2010); and the production processes for titanium pigment (Xu and Yang, 2001), acetylene (Plotnikova et al, 2001), ethylene (Yurin et al, 1992), anthraquinone (Zhang et al, 2000), and p-nitrotoluene-2-sulfonic acid (Chen, 2009;Lee et al, 1974;Song et al, 2013;Weissermel and Arpe, 1997). Consequently, hundreds of thousands of tonnes of residual free sulfuric acid solutions are produced annually (Fa, 1999;Liu, 2002;Sarkar et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of modified magnesium oxysulfate cement derived from waste sulfuric acid

Zhang

2016

Advances in Cement Research

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High-strength modified magnesium oxysulfate cement is prepared using light-burned magnesia and industrial waste sulfuric acid resulting from titanium dioxide production. Amino trimethylene phosphonic acid (ATMP) is used as a modifier. Coal fly ash is added as a filler to the magnesium oxysulfate cement in order to further reduce its production cost. The compressive strength, setting time, phase compositions, micro-morphology and volume stability of the modified magnesium oxysulfate cement are comprehensively analysed. The results indicate that the compressive strength of the modified magnesium oxysulfate cement reaches 82·1 MPa when the molar ratio of the active magnesium oxide/sulfuric acid (MgO/H 2 SO 4 ) (M) is 6, the water/cement ratio (R) is 0·6 and the ATMP and coal fly ash dosages are 0·2% and 50%, respectively. Low ATMP doses markedly affect the microstructure, hydration and shrinkage of the magnesium oxysulfate cement. X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy analyses prove that the needle-like magnesium hydroxide sulfate hydrate5Mg(OH) 2 ·MgSO 4 ·7H 2 O crystal (5·1·7 phase) -is the predominant strength phase in this cement system.

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“…heavy metals, acid and water. [2][3] Among them, ion-exchange-membrane-based techniques have attracted much attention, including conventional electrodialysis [4][5][6] , bipolar membrane electrodialysis (BMED) [7] , electro-electrodialysis (EED) [8] , neutralization dialysis [9] , diffusion dialysis [10][11][12][13][14][15][16] , and so on.…”

Section: Introductionmentioning

confidence: 99%

A win-win strategy for the reclamation of waste acid and conversion of organic acid by a modified electrodialysis

Jia

Chen

Wang

et al. 2016

Separation and Purification Technology

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In view of some inherent problems, such as the high mobility of protons and low dissociation degrees of organic acid, the conventional electrodialysis technology must be improved before being applied widely in the related fields. In this work, a win-win strategy for simultaneously reclaiming industrial waste acid and producing organic acid by ion substitution electrodialysis (ISED) was put forward. Above all, the ISED technology was further investigated, including its universality and work performance influenced by the membrane selection. Subsequently, a modified ISED was developed and applied in the conversion of acetic acid using the simulated waste acid effluent as proton source. The experiments indicated that a much better work performance, including improved current efficiency and conversion rate and reduced energy consumption, can be achieved when compared to the conventional technology. Especially, it was observed that the content of electro-migrated metal ions in the produced organic acid was so low that a high purity organic acid product can be easily obtained after a simple post-treatment.

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Recovery of H2SO4 from an acid leach solution by diffusion dialysis

Cited by 71 publications

References 23 publications

Continuous dialysis of sulphuric acid and sodium sulphate mixture

Continuous dialysis of sulphuric acid and sodium sulphate mixture

Preparation and properties of modified magnesium oxysulfate cement derived from waste sulfuric acid

A win-win strategy for the reclamation of waste acid and conversion of organic acid by a modified electrodialysis

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