Highly porous copper oxide sorbent for H2S capture at ambient temperature

Wang, Jian; Wang, Longjiang; Fan, Huiling; Wang, Hui; Hu, Yongfeng; Wang, Zhongde

doi:10.1016/j.fuel.2017.08.003

Cited by 79 publications

(28 citation statements)

References 40 publications

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“…However, a decrease of the analytical response was produced in the whole evaluated range (0–320 µg) when NaOH was added to the detection area (Figure S2D). The negative effect observed in this experiment could presumably be attributed to the limited capture of the volatile by the copper oxides formed under alkaline conditions in the detection area of the PAD [35,36]. Consequently, the addition of NaOH to the detection area was discarded in further experiments.…”

Section: Resultsmentioning

confidence: 99%

A paper‐based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters

Pena‐Pereira

Matesanz

Lavilla

et al. 2020

J of Separation Science

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The use of paper-based devices in combination with noninstrumental detection systems is becoming increasingly important in the analytical field due to its simplicity, rapidity, and low cost. However, their use for determination of volatile analyte derivatives is still relatively scarce. The present work reports on the assessment of a paper-based gas-sensing approach for the simultaneous noninstrumental colorimetric detection of nitrite and sulfide. Colorimetric systems based on the Griess and methylene blue assays, formation of colored metallic sulfides, and interaction/reaction with in situ generated metallic nanoparticles were preliminary evaluated. Then, the effect of experimental variables affecting the analytical performance of the paper-based gas sensor was studied with two digitization systems, namely a scanner and a smartphone.Under optimal conditions, the developed system yielded limits of detection of 0.055 and 0.005 mg/L for nitrite and sulfide, respectively. The repeatability, expressed as relative standard deviation, was found to be 5.9 and 6.7% for nitrite and sulfide, respectively. The proposed method was finally applied to the analysis of water samples, showing recoveries in the range of 95-105%. K E Y W O R D Snoninstrumental detection, paper-based analytical devices, scanometric analysis, smartphones, water analysis 1908

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Section: Resultsmentioning

confidence: 99%

A paper‐based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters

Pena‐Pereira

Matesanz

Lavilla

et al. 2020

J of Separation Science

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show abstract

“…Other materials have been reported as sorbents for H 2 S removal including fly ash, activated carbon, polymers, carbon-coated polymers, ceramics, and synthetic zeolites. The H 2 S removal efficiency of these materials ranged from 8.63 to 210 mg H 2 S/g [70][71][72]. Obviously, compared with other materials, AlS is a easily, locally and largely available by-product with cost-effectiveness as a feature.…”

Section: Novel Use Of Als For Unpleasant Gas Purificationmentioning

confidence: 99%

Waterworks Sludge: An Underrated Material for Beneficial Reuse in Water and Environmental Engineering

Zhao

Nzihou

Ren

et al. 2020

Waste Biomass Valor

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Waterworks sludge refers to the inevitable suspended and dissolved solids produced during the water purification process when producing tap water where Al-salt and/or Fe-salt are used as coagulant worldwide. Waterworks sludge is dewatered and the resultant cakes have been treated as "waste" for landfill as their major final disposal solution for a long time in practice. As waterworks sludge is the residual of potable water treatment process, it is not harmful and without toxic elements such as heavy metals in most cases in comparison to sewage sludges for instance. Actually, waterworks sludge is an underrated material with huge potential for beneficial reuse as raw material in water and environmental engineering. However, little was significantly progressed on this topic until the last two decades. Research and development (R&D) with special interest and focus on waterworks sludge reuse was conducted in our group in the last 15 years and this paper reports and discusses the main work and its novel application profile. Overall, it is believed that the R&D of waterworks sludge is useful and will help to develop national strategy of the entire waterworks sludge management, allowing its transformation from a "waste" into value-added products, and thus contribute to sustainable development.

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“…The biogas and pollutant trace compounds were detected using a high sensitivity mass analytical instrument, particularly well-suited for measurements of gases [51][52][53][54]. The mass spectrometer adopted for the measurements was an HPR 20 (Hiden Ltd., Warrington UK).…”

Section: Test Descriptionmentioning

confidence: 99%

Experimental Analysis and Model Validation on the Performance of Impregnated Activated Carbons for the Removal of Hydrogen Sulfide (H2S) from Sewage Biogas

2019

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Organic waste exploitation is crucial for waste emissions restraint in air, soil and water. This type of waste can be exploited to produce biogas, a valuable fuel exploitable for energy purposes. A circular approach for energy production is much cleaner and more sustainable than the traditional linear approach. In this work, organic waste was used for biogas production to feed a highly efficient solid oxide fuel cell power generator, which requires an ultra-purified fuel. Commercial sorbents were experimentally studied in conjunction with a dynamic adsorption model to predict the breakthrough time and organize the material change-over. In the presence of 0.1% oxygen in the gas mixture, AirDep® CKC showed a marked increase in the adsorption capacity (from 3.91 to 84.87 mg/g), overcoming SulfaTrap® R8G (49.91 mg/g). The effect of several operating parameters on adsorption capacity was evaluated: inlet H2S concentration, filter geometry and gas mixture velocity. Experimental data revealed that adsorption capacity increases with initial H2S concentration, following the typical trend of the Langmuir isotherm. Model simulations were in good agreement compared to experimental results, with an average relative error lower than 7%. A sensitivity analysis on the adsorption capacity was accomplished considering parameters from operational and empirical correlations.

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Highly porous copper oxide sorbent for H2S capture at ambient temperature

Cited by 79 publications

References 40 publications

A paper‐based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters

A paper‐based gas sensor for simultaneous noninstrumental colorimetric detection of nitrite and sulfide in waters

Waterworks Sludge: An Underrated Material for Beneficial Reuse in Water and Environmental Engineering

Experimental Analysis and Model Validation on the Performance of Impregnated Activated Carbons for the Removal of Hydrogen Sulfide (H2S) from Sewage Biogas

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