Recovery of nitric acid from waste etching solution using solvent extraction

Shin, Chang-Hoon; Kim, Ju-Yup; Kim, Junyoung; Kim, Hyun-Sang; Lee, Hyang-Sook; Mohapatra, Debasish; Ahn, Jae-Woo; Bae, Wookeun

doi:10.1016/j.jhazmat.2008.07.019

Cited by 51 publications

(27 citation statements)

References 6 publications

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“…Several methods other than direct neutralization have been developed for the recovery of sulfuric acid and other acids from industrial wastes and these include distillation [4,5], solvent extraction [6,7], ion exchange techniques [8], electrohydrolysis [9,10] and diffusion dialysis [11,12]. The diffusion dialysis is an attractive acid recovery method because it is characterized by high proton permeability and strong salts rejection [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Recovery of H2SO4 from an acid leach solution by diffusion dialysis

Wei

Deng

et al. 2010

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Recovery of H2SO4 from an acid leach solution by diffusion dialysis

Wei

Deng

et al. 2010

Journal of Hazardous Materials

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“…From the Ag(I) stripping solution, pure HNO 3 can be recovered by extraction with tributyl phosphate (TBP) and stripping with distilled water. 13) In this study, results of batch simulations of experiments were compared with those derived from the McCabe-Thiele plots for extraction and stripping. The starting feed solution contained 29.4 g/dm 3 Ag(I), 6 g/dm 3 Zn(II), and 0.1 mol/ dm 3 of HNO 3 , while 1 mol/dm 3 LIX63 in kerosene was used as the extractant.…”

Section: Mccabe-thiele Plot For the Stripping Of Agmentioning

confidence: 99%

Separation of Silver (I) and Zinc(II) from Nitrate Solutions by Solvent Extraction with LIX63

et al. 2017

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The separation of Ag(I) and Zn(II) from nitrate solutions using 5,8-diethyl-7-hydroxy-dodecan-6-oxime (LIX63) as the extractant was investigated as a function of nitric acid (HNO 3 ) and extractant concentrations. Selective extraction of Ag(I) over Zn(II) was achieved with LIX63 when HNO 3 concentration was in the range 0.001-1 mol/dm 3 . Quantitative stripping of Ag(I) from loaded LIX63 was accomplished using 5 mol/dm 3 of HNO 3 . The McCabe-Thiele diagrams for the extraction and stripping of Ag(I) with LIX63 were constructed, and the results were veri ed by simulated cross-current extraction and stripping experiments. Finally, Ag(I) and Zn(II) solutions of high purity (> 99.95%) were obtained.

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“…25) When TBP was used as the extractant in the extraction of HNO 3 , a large amount of TBP was lost due to its high solubility in water. 26) This problem can be avoided by using TEHA. In addition, it is possible to strip HNO 3 from the loaded TEHA by using distilled water.…”

Section: Recovery Of Hnomentioning

confidence: 99%

Recovery of Silver from the Nitrate Leaching Solution of a Spent Ag/α-Al<sub>2</sub>O<sub>3</sub> Catalyst by Solvent Extraction and Reduction

2017

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Nitric acid was employed to strip silver from loaded 5,8-diethyl-7-hydroxy-dodecan-6-oxime (LIX63) in the recovery of silver from a leaching solution of a spent Ag/α-Al 2 O 3 catalyst. The loaded LIX63 was obtained by contacting the real leaching solution with 0.5 mol/dm 3 LIX63 diluted in kerosene. In order to produce silver powder by reduction, the HNO 3 in the stripping solution was recovered by extraction with tri 2-ethylhexyl amine (TEHA) followed by stripping with distilled water. Silver powder was obtained by reduction with 0.1 mol/dm 3 L-ascorbic acid. A owsheet was proposed to recover Ag from the leaching solution of the spent Ag/α-Al 2 O 3 catalyst by solvent extraction and reduction with minimum waste emissions.

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Recovery of nitric acid from waste etching solution using solvent extraction

Cited by 51 publications

References 6 publications

Recovery of H2SO4 from an acid leach solution by diffusion dialysis

Recovery of H2SO4 from an acid leach solution by diffusion dialysis

Separation of Silver (I) and Zinc(II) from Nitrate Solutions by Solvent Extraction with LIX63

Recovery of Silver from the Nitrate Leaching Solution of a Spent Ag/α-Al<sub>2</sub>O<sub>3</sub> Catalyst by Solvent Extraction and Reduction

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