Hemeproteins as Targets for Sulfide Species

2020 ◽  
Vol 32 (4) ◽  
pp. 247-257 ◽  
Author(s):  
Fernando Martín Boubeta ◽  
Silvina Andrea Bieza ◽  
Mauro Bringas ◽  
Juan Cruz Palermo ◽  
Leonardo Boechi ◽  
...  
Keyword(s):  
Sulfide Species

scholarly journals Current trends in leather science

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Anthony D. Covington ◽  
William R. Wise
Keyword(s):  
Ionic Liquids ◽  
Potential Role ◽  
Solid Medium ◽  
Leather Industry ◽  
Chromium Vi ◽  
Current Trends ◽  
New Findings ◽  
Vegetable Tanning ◽  
Sulfide Species

Abstract In preparing the second edition of ‘Tanning Chemistry. The Science of Leather.’, the literature was updated and the content was revised and reviewed. Here, the new findings are presented and discussed. Notable developments include the necessary rethinking of the mechanism of sulfide unhairing because of new understanding of the aqueous chemistry of sulfide species. Revision upwards of the value of the second pKa for sulfide species ionisation means that S2− cannot exist in an aqueous medium, so the unhairing species in hair burn reactions is HS−. Although the technology remains the same, this means the mechanisms of associated reactions such as immunisation must be revised. Rawstock preservation has benefitted from studies of the potential role of materials from plants which accumulate salt, but which also contribute terpene compounds. There is also further discussion on the continuing issue of chromium (VI) in the leather industry. The application to processing of new solvents, ionic liquids and deep eutectics, is the coming technology, which offers transforming options for new chemistries and products. Renewed interest in vegetable tanning and methods of wet white processing are current trends. Also, within the topic of reagent delivery is processing in a solid medium of plastic beads. Graphical abstract

scholarly journals A procedure for eliminating sulfide interference on silica colorimetric analysis

2014 ◽  
Vol 78 (6) ◽  
pp. 1417-1422 ◽  
Author(s):  
Fernando Berro ◽  
Matteo Lelli ◽  
Ilaria Minardi ◽  
Giorgio Virgili
Keyword(s):  
Elemental Sulfur ◽  
Colorimetric Analysis ◽  
Sulfide Species

Two different approaches were tested in this study to suppress sulfide interference in the silicomolybdate method of silica determination, namely: oxidation of sulfide to elemental sulfur; and conversion of the sulfide species to H2S and stripping by air bubbling. Based on the results obtained the latter approach is deemed to represent the better and quicker option to eliminate sulfide interference in silica colorimetric analysis.

Stacked Cu1.8S nanoplatelets as counter electrode for quantum dot-sensitized solar cell

RSC Advances ◽  
2015 ◽  
Vol 5 (122) ◽  
pp. 100560-100567 ◽  
Author(s):  
A. Dennyson Savariraj ◽  
G. Rajendrakumar ◽  
Samayanan Selvam ◽  
S. N. Karthick ◽  
B. Balamuralitharan ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Quantum Dot ◽  
Electrocatalytic Activity ◽  
Counter Electrode ◽  
Counter Electrodes ◽  
Cu Deficiency ◽  
Polysulfide Electrolyte ◽  
Surface Active ◽  
Sulfide Species

The electrocatalytic activity of Cu2−xS thin film QDSSC counter electrodes for reducing polysulfide electrolyte depends on surface active sulfide species and Cu deficiency.

scholarly journals A comparison of removal performance of volatile organic and sulfurous compounds between odour abatement systems

2018 ◽  
Vol 77 (11) ◽  
pp. 2657-2667 ◽  
Author(s):  
A. Shammay ◽  
I. Evanson ◽  
R. M. Stuetz
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Voc Removal ◽  
Biotrickling Filters ◽  
Volatile Organic ◽  
Sulfurous Compounds ◽  
Sulfide Species ◽  
Sewer Networks

Abstract Three types of odour abatement systems in sewer networks in Australia were studied for 18 months to determine the removals of different compounds. Six volatile sulfurous compounds and seven volatile organic compounds (VOCs) were further investigated. All types of odour abatement systems exhibited good removal of hydrogen sulfide with the biotrickling filters (BTFs) showing the highest consistent removal. Biofilters outperformed BTFs and activated carbon (AC) filters in the removal of dimethyl mono-, di- and tri-sulfide species at the low inlet concentrations typically found. AC filters exhibited little VOC removal with no compound consistently identified as having a removal greater than 0%. Biofilters outperformed BTFs in VOC removal, yet both had high removal variability.

Influence of pH on hexavalent chromium reduction by Fe(II) and sulfide compounds

2015 ◽  
Vol 72 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Juan Chen ◽  
Ri Chen ◽  
Mei Hong
Keyword(s):  
Reduction Process ◽  
Single Species ◽  
Batch Experiments ◽  
Chromium Reduction ◽  
Promoting Effect ◽  
Ph Values ◽  
Ph Dependent ◽  
Ph Range ◽  
Influence Of Ph ◽  
Sulfide Species

Abstract Batch experiments were conducted to investigate the influence of pH on Cr(VI) reduction with Fe(II), sulfide and mixtures of Fe(II) and sulfide at pH 3.0–12.0. The results showed that Fe(II) could reduce Cr(VI) with a high removal of nearly 100% in the pH range of 3.0–9.0, while the reduction of Cr(VI) decreased to approximately 60% considering the oxygenation of Fe(II) at pH 12.0. The reaction between Cr(VI) and sulfide, however, was largely pH dependent. H2S was the main sulfide species with the Cr(VI) removal of ∼80% at pH < 7.0, while sulfide mainly existed in the forms as HS− or S2− at pH ≥ 7.0, which had very limited removal of Cr(VI) (no more than 10%). The Cr(VI) removal by the mixtures of Fe(II) and sulfide was also compared with the sum of separate ones at different pH values. The sum of Cr(VI) removal by single Fe(II) and S(-II) was similar to that by the mixtures at pH 3.0–5.0 and pH 12.0, while the removal of Cr(VI) by the mixtures was observed to be more effective than the sum of the single-species removals at pH 7.0–9.0; the promoting effect was primarily attributed to the catalysis of ferric ion generated during the reduction process.

Metal-sulfide species in oxic waters

2005 ◽  
Vol 528 (2) ◽  
pp. 183-195 ◽  
Author(s):  
Katrina Sukola ◽  
Feiyue Wang ◽  
André Tessier
Keyword(s):  
Metal Sulfide ◽  
Sulfide Species

scholarly journals A Case of Mistaken Identity: Are Reactive Oxygen Species Actually Reactive Sulfide Species?

2016 ◽  
Vol 30 (S1) ◽  
Author(s):  
Kenneth R Olson ◽  
Yan Gao ◽  
Evelyn Huang ◽  
Maaz Arif ◽  
Nitin Arora ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Mistaken Identity ◽  
Sulfide Species

Voltammetric Characterization of Dissolved Cadmium Sulfide Species

2011 ◽  
Vol 23 (11) ◽  
pp. 2735-2742 ◽  
Author(s):  
Katherine M. Mullaugh ◽  
George W. Luther
Keyword(s):  
Cadmium Sulfide ◽  
Sulfide Species

scholarly journals New Insight into the Chemical Nature of the Plasmonic Nanostructures Synthesized by the Reduction of Au(III) with Sulfide Species

Langmuir ◽  
2017 ◽  
Vol 33 (27) ◽  
pp. 6785-6793 ◽  
Author(s):  
M. A. Huergo ◽  
L. Giovanetti ◽  
M. S. Moreno ◽  
C. M. Maier ◽  
F. G. Requejo ◽  
...  
Keyword(s):  
Chemical Nature ◽  
Plasmonic Nanostructures ◽  
Sulfide Species ◽  
Insight Into
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