Efficient purification of hydrogen sulfide by synergistic effects of electrochemical and liquid phase catalysis

Li, Junyan; Ma, Xi; Qu, Guangfei; He, Kang; Lv, Pei; Xie, Ruosong; Zhao, Chi; Cai, Yingying

doi:10.1016/j.seppur.2019.01.055

Cited by 16 publications

(4 citation statements)

References 7 publications

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“…In this work, electrochemical and chemical recovery processes did not remove the electrodeposited sulfur from the surface of the activated carbon electrode since sulfur incorporated into the carbon structure. Li et al [393] conducted a study on a catalytic (palladium and copper) oxidation-assisted electro-precipitation system. In the reactor, the catalyst oxidized a portion of H 2 S to sulfur and sulfate by transition metals and electroactive substances, while the rest of the H 2 S was removed from the system by electro-precipitation.…”

Section: Electrochemical Processesmentioning

confidence: 99%

Hydrogen sulfide capture and removal technologies: A comprehensive review of recent developments and emerging trends

Pudi

Rezaei

Signorini

et al. 2022

Separation and Purification Technology

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Section: Electrochemical Processesmentioning

confidence: 99%

Hydrogen sulfide capture and removal technologies: A comprehensive review of recent developments and emerging trends

Pudi

Rezaei

Signorini

et al. 2022

Separation and Purification Technology

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“…However, there are some concerns regarding this problem, especially when a bad smell is associated with the toxicity of some substances, as is the case with hydrogen sulfide [ 5 , 6 ]. Beyond the unpleasant sensation generated by hydrogen sulfide, it is also extremely toxic (because it combines with cytochrome iron and other essential compounds that contain iron in the cell), and long-term exposure of the population, even to very low concentrations, can cause serious diseases [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Sulphide Sequestration with Metallic Ions in Acidic Media Based on Chitosan/sEPDM/Polypropylene Composites Hollow Fiber Membranes System

et al. 2023

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This paper presents the preparation and characterization of composite membranes based on chitosan (Chi), sulfonated ethylene–propylene–diene terpolymer (sEPDM), and polypropylene (PPy), and designed to capture hydrogen sulfide. The Chi/sEPDM/PPy composite membranes were prepared through controlled evaporation of a toluene dispersion layer of Chi:sEPDM 1;1, w/w, deposited by immersion and under a slight vacuum (100 mmHg) on a PPy hollow fiber support. The composite membranes were characterized morphologically, structurally, and thermally, but also from the point of view of their performance in the process of hydrogen sulfide sequestration in an acidic media solution with metallic ion content (Cu2+, Cd2+, Pb2+, and/or Zn2+). The operational parameters of the pertraction were the pH, pM, matrix gas flow rate, and composition. The results of pertraction from synthetic gases mixture (nitrogen, methane, carbon dioxide) indicated an efficient removal of hydrogen sulfide through the prepared composite membranes, as well as its immobilization as sulfides. The sequestration and the recuperative separation, as sulfides from an acid medium, of the hydrogen sulfide reached up to 96%, decreasing in the order: CuS > PbS > CdS > ZnS.

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“…In these circumstances, the processes and technologies for preventing and combating unpleasant odors have constantly evolved [ 15 ], the best-known methods involving thermal [ 16 ], biological [ 17 ], physical and chemical [ 18 , 19 ], catalytic [ 20 ], electro-physical [ 21 ], or membrane processes [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Removing of the Sulfur Compounds by Impregnated Polypropylene Fibers with Silver Nanoparticles-Cellulose Derivatives for Air Odor Correction

et al. 2021

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The unpleasant odor that appears in the industrial and adjacent waste processing areas is a permanent concern for the protection of the environment and, especially, for the quality of life. Among the many variants for removing substance traces, which give an unpleasant smell to the air, membrane-based methods or techniques are viable options. Their advantages consist of installation simplicity and scaling possibility, selectivity; moreover, the flows of odorous substances are direct, automation is complete by accessible operating parameters (pH, temperature, ionic strength), and the operation costs are low. The paper presents the process of obtaining membranes from cellulosic derivatives containing silver nanoparticles, using accessible raw materials (namely motion picture films from abandoned archives). The technique used for membrane preparation was the immersion precipitation for phase inversion of cellulosic polymer solutions in methylene chloride: methanol, 2:1 volume. The membranes obtained were morphologically and structurally characterized by scanning electron microscopy (SEM) and high resolution SEM (HR SEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared spectrometry (FTIR), thermal analysis (TG, ATD). Then, the membrane performance process (extraction efficiency and species flux) was determined using hydrogen sulfide (H2S) and ethanethiol (C2H5SH) as target substances.

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Efficient purification of hydrogen sulfide by synergistic effects of electrochemical and liquid phase catalysis

Cited by 16 publications

References 7 publications

Hydrogen sulfide capture and removal technologies: A comprehensive review of recent developments and emerging trends

Hydrogen sulfide capture and removal technologies: A comprehensive review of recent developments and emerging trends

Hydrogen Sulphide Sequestration with Metallic Ions in Acidic Media Based on Chitosan/sEPDM/Polypropylene Composites Hollow Fiber Membranes System

Removing of the Sulfur Compounds by Impregnated Polypropylene Fibers with Silver Nanoparticles-Cellulose Derivatives for Air Odor Correction

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