Separation of iron and zinc from manganese nodule leach liquor using TBP as extractant

Patnaik, Pinak; Baba, Alafara A.; Nathsarma, K.C.; Sarangi, K.; Subbaiah, T.

doi:10.1179/1743285513y.0000000044

Cited by 5 publications

(2 citation statements)

References 17 publications

(18 reference statements)

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“…[17][18][19] Kerosene was always added for diluting TBP which has a density that is similar to the density of water. [20,21] In this research, the extraction and stripping behaviours of TBP/kerosene were studied, the desired recovery rate was achieved, and a reliable recovery process was developed.…”

Section: Introductionmentioning

confidence: 99%

Recovery of gallic acid from gallic acid processing wastewater

Zhou

Dong

et al. 2014

Environmental Technology

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Copyright: Weng et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. ABSTRACT Epigenome aberrations have been observed in tobacco-associated human malignancies. (−)-epigallocatechin-3-gallate (EGCG) has been proven to modulate gene expression by targeting DNA methyltransferases (DNMTs) through a proposed mechanism involving the gallate moiety of EGCG. We show that gallic acid (GA) changes the methylome of lung cancer and pre-malignant oral cell lines and markedly reduces both nuclear and cytoplasmic DNMT1 and DNMT3B within 1 week. GA exhibits stronger cytotoxicity against the lung cancer cell line H1299 than EGCG. We found that GA reactivates the growth arrest and DNA damage-inducible 45 (GADD45) signaling pathway may through the demethylation of CCNE2 and CCNB1 in H1299 cells. To improve the epigenetic anti-cancer activities of oolong tea, we identified a fungus, Aspergillus sojae which can efficiently increase the GA content in oolong tea via a 2-week fermentation process. The fungus dramatically increased GA up to 44.8 fold in the post-fermentation oolong tea extract (PFOTE), resulting in enhanced demethylation effects and a significant reduction in the nuclear abundances of DNMT1, DNMT3A, and DNMT3B in lung cancer cell lines. PFOTE also showed stronger anti-proliferation activities than oolong tea extract (OTE) and increased sensitivity to cisplatin in H1299 cells. In summary, we demonstrate the potent inhibitory effects of GA on the activities of DNMTs and provide a strong scientific foundation for the use of specialized fermented oolong tea high in GA as an effective dietary intervention strategy for tobacco-associated cancers. www.impactjournals.com/oncotarget/

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Section: Introductionmentioning

confidence: 99%

Recovery of gallic acid from gallic acid processing wastewater

Zhou

Dong

et al. 2014

Environmental Technology

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“…Liquid-liquid extraction of zinc(II) by 3-methylquinoxaline-2-thione from nitrate medium investigated [6]. Separation of iron and zinc(II) from manganese nodule leach liquor using TBP as extractant is studied [7]. Solvent extraction utilized for the selective separation of zinc(II) from other elements in hydrometallurgical processing of resources [8].…”

Section: Introductionmentioning

confidence: 99%

Liquid- Liquid Extraction of Zinc(II) From Acid Media with N-N-Heptylaniline as an Extractant: Analysis of Pharmaceutical and Commercial Sample

GN¹

2018

BJSTR

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The extraction of zinc(II) from acid media by N-n-heptylaniline in xylene has been studied for metal distribution measurements. Various physicochemical parameters like acid concentration, reagent concentration, equilibrium time, effect of diluents, aqueous to organic phase ratio, stripping agents and loading capacity were investigated for the quantitative extraction. The extraction was carried out from 3 M hydrochloric acid and 0.5 M N-n-heptylaniline concentration. Zinc(II) was selectively extracted and separated from many metal ions and synthetic mixtures. The nature of the extracted species was determined. Zinc(II) was analyzed from pharmaceutical samples and nycil talk powder.

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