Synthesis and characterization of ferric tannate as a novel porous adsorptive-catalyst for nitrogen removal from wastewater

Zhang, Ruina; Li, Lin; Liu, Junxin

doi:10.1039/c5ra02035b

Cited by 52 publications

(25 citation statements)

References 46 publications

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“…13 In particular, the band at 1326 cm -1 in tannin spectrum is characteristic of bending vibration of O-C in a phenolic hydroxyl group. 45 The interaction between ferric ions and the phenolic hydroxyl group shifts the O-C bond stretching vibration to higher wavenumbers, in the present case from to 1343 and 1350 cm -1 in T+B+P and T+B+P+PEG+S layers, respectively. The tannin band at 1744 cm -1 that corresponds to C=O stretching of the polyphenol shifts to shorter wavenumbers, 45 i.e.…”

Section: R1mentioning

confidence: 47%

“…45 The interaction between ferric ions and the phenolic hydroxyl group shifts the O-C bond stretching vibration to higher wavenumbers, in the present case from to 1343 and 1350 cm -1 in T+B+P and T+B+P+PEG+S layers, respectively. The tannin band at 1744 cm -1 that corresponds to C=O stretching of the polyphenol shifts to shorter wavenumbers, 45 i.e. 1726 cm -1 in the case of T+B+P layer and to 1719 cm -1 in the case of T+B+P+PEG+S layer.…”

Section: R1mentioning

confidence: 47%

“…46 The most remarkable difference in FTIR spectra of rust and inhibitor-modified rust layers is the loss of intensity and shift of magnetite peak at 574 cm -1 of the rust layer to 506 cm -1 in the case of the inhibitor-modified rust layer, probably due to the conversion process to ferric tannate. 45 FTIR spectra show a dominant role of flavonoid species, present both in tannin and propolis, on the formation of the inhibitor-modified rust layer.…”

Section: R1mentioning

confidence: 98%

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A Novel Environmentally Friendly Synergistic Mixture for Steel Corrosion Inhibition in 0.51 M NaCl

Božović¹,

Martinez²,

Grudić³

2019

ACSi

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The ubiquitous use of plain and low-alloy steels in neutral, chloride bearing environments presents an everyday challenge for corrosion protection professionals. This paper explores the possibility of developing a non-toxic and environmentally friendly synergistic inhibitor mixture made of propolis, tannin, sodium benzoate, PEG400 and starch that could be applied into the solution to induce the formation of a persistent protective layer on steel. Components of the mixture were chosen based on the references giving their characteristics relevant to their possible action in the solution and/or at the surface of the steel. The efficiency of the protective layer formed under the influence of the inhibitor mixture, and then measured by the LPR probe in the inhibitor-free solution, was the lowest under quiescent conditions (75%) and the highest (95%) under flow conditions. Both, LPR and EIS data indicate that the inhibitor modified layer presents a barrier for diffusion of oxygen that acts as a primary corrosion reaction depolarizer in the investigated neutral chloride solution. The demonstrated persistence of the inhibitor modified layer is of primary interest as it gives possibility batch application.

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Section: R1mentioning

confidence: 47%

Section: R1mentioning

confidence: 47%

Section: R1mentioning

confidence: 98%

See 1 more Smart Citation

A Novel Environmentally Friendly Synergistic Mixture for Steel Corrosion Inhibition in 0.51 M NaCl

Božović¹,

Martinez²,

Grudić³

2019

ACSi

View full text Add to dashboard Cite

show abstract

“…According to these experimental results it seemed adequate to conclude that the primers protected steel from rusting during exposition in the laboratory atmosphere and that the primers transformed partially the oxide layer by chelating the ionic species of iron [7,31].…”

Section: Ftir Analysismentioning

confidence: 94%

Primers based on tara and quebracho tannins for poorly prepared steel surfaces

Byrne

D'Alessandro

Selmi

et al. 2019

Progress in Organic Coatings

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Steel panels must be protected during storage and transportation because they can corrode. This protection used to be afforded by chromate primers, but nowadays tannin-based primers are being studied. These primers are not only used as protection but also as adhesion promoter if the steel surface was not well prepared (presence of oxides or low roughness). The objective of this work was to prepare lanthanum "tannate", employing tara and quebracho tannins. The "tannates" were incorporated in primers formulation and applied on steel SAE 1010 panels (previously exposed to the humidity chamber or with 6 μm of roughness depth). These primed panels were exposed to humidity chamber where corrosion and blistering degrees were evaluated. Adhesion test were done. Electrochemical assays such as ionic resistance and corrosion potential measurements were carried out. Results showed that the adhesion and the barrier properties of the primers were good. Besides, on low roughness steel, the primers diminished the corrosion current. Results were compared with traditional zinc tetroxychromate primer.

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“…6. The tannin powder proved to have an amorphous structure as their diffraction peaks emerge in the 2θ = 15° -30° range [43], [44]. The peaks that appear at around 2θ = 32°, 45° and 56° were comparable to the peaks of crystalline carbonaceous structure such as graphite.…”

Section: E X-ray Powder Diffraction (Xrd)mentioning

confidence: 94%

Characterization of Powdered Rhizophora Mucronata Bark Tannins Extractives using Different Drying Method s

Muhayyidin¹,

Bakar²,

Ghazali³

et al. 2019

IJEAT

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The effect of different drying methods using spray dryer and rotary evaporator towards the physico-chemical properties and thermal stability of powdered tannin extractives from Rhizophora Mucronata bark was investigated. Prior to spray drying at 130°C and rotary evaporating at 80°C, tannin was extracted using water-based boiling extraction at temperature ranging from 80 to 90°C. Powdered tannin extractives obtained by spray dryer decomposed at higher temperature (at 270°C) than those using rotary evaporator (at 210°C). The powdered tannin extractives from spray dryer was higher in thermal stability due to the high crystallinity peak appeared from X-ray Powder Diffraction (XRD) analysis. Condensed and hydrolysable tannins were also quantified using Reverse-phase High Performance Liquid Chromatography (RP-HPLC) for both methods. Powdered tannins extractives using spray dryer contained 27.8% condensed tannins and 0.001% hydrolysable tannins, in which the condensed tannins are slightly higher in concentration than those formed using rotary evaporator which was 26.5%. The findings revealed that the used of spray dryer is more beneficial to obtain a stronger thermal stability and a higher concentration of powdered Rhizophora Mucronata bark tannins extractives

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Synthesis and characterization of ferric tannate as a novel porous adsorptive-catalyst for nitrogen removal from wastewater

Cited by 52 publications

References 46 publications

A Novel Environmentally Friendly Synergistic Mixture for Steel Corrosion Inhibition in 0.51 M NaCl

A Novel Environmentally Friendly Synergistic Mixture for Steel Corrosion Inhibition in 0.51 M NaCl

Primers based on tara and quebracho tannins for poorly prepared steel surfaces

Characterization of Powdered Rhizophora Mucronata Bark Tannins Extractives using Different Drying Method s

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