Efficient Adsorption of Hydrogen Sulfide at Room Temperature Using Fumed Silica-supported Deep Eutectic Solvents

Mao, Jiaming; Ma, Yunqian; Zang, Lihua; Xue, Rong; Xiao, Cong; Ji, Dandan

doi:10.4209/aaqr.2019.10.0520

Cited by 18 publications

(10 citation statements)

References 42 publications

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“…Actually, Cu 2 S could be further transferred to sulfur and CuSO 4 during the regeneration process, and thus can recover elemental sulfur. 101 The above studies verify that Fe(III)-based ILs and metalbased DESs have great potential for sulfur recovery. However, their regeneration rate by air or O 2 is very slow due to the low solubility of O 2 and the low reaction kinetics in ILs and DESs.…”

Section: Ils and Dess For Utilization Of H 2 Smentioning

confidence: 52%

“…Considering the great potential and advantages of supported ILs, the study on the H 2 S removal performance of supported DESs (SDESs) should be meaningful for a wider application of DESs. Mao et al 101 prepared a novel kind of SDESs using fumed silica (FS) as the supporting material, and TAE x CuCl 2+x with various molar ratios of triethylamine hydrochloride (TEACl) and cupric chloride (CuCl 2 ) as the loading substance. SDES with 10 wt % loading of TAECuCl 3 (TAECuCl 3 @FS/10 wt %) has the optimum desulfurization performance at 30 °C with the highest adsorption efficiency (molar ratio of Cu to absorbed H 2 S, n H2S /n Cu is 0.87), which is about 3.56 times higher than the pure TAECuCl 3 under the same condition.…”

Section: Il-reinforced Adsorbents and Membranesmentioning

confidence: 99%

“…As mentioned in section , Cu 2 S was obtained during the adsorption of H 2 S in supported DESs composed of TAECuCl 3 and fumed silica. Actually, Cu 2 S could be further transferred to sulfur and CuSO 4 during the regeneration process, and thus can recover elemental sulfur …”

Section: Ils and Dess For Utilization Of H2smentioning

confidence: 99%

See 2 more Smart Citations

Rotten Eggs Revaluated: Ionic Liquids and Deep Eutectic Solvents for Removal and Utilization of Hydrogen Sulfide

Laaksonen

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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Hydrogen sulfide (H2S) is highly toxic and one of the problematic impurities in industrial gas streams, calling for H2S removal down to single-digit ppm levels to protect health and environment, and not to harm to the downstream processes. Here, we discuss the recent developments and challenges of current H2S removal technologies. Furthermore, we present a comprehensive review of H2S removal in ionic liquids (ILs), IL-based solvents/adsorbents/membranes, and deep eutectic solvents (DESs) due to their unique advantages. We analyze theoretical studies to better understand the microscopic details behind H2S removal. We discuss new research on IL/DES-based H2S removal processes from an industrial perspective. Finally, we summarize the utilization of H2S in IL/DES-based systems for the recovery of sulfur and hydrogen, and synthesis of value-added chemicals. This review will provide both general and in-depth knowledge of the achievements, difficulties, and research priorities in developing novel ILs/DESs for efficient and sustainable H2S removal and utilization.

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Section: Ils and Dess For Utilization Of H 2 Smentioning

confidence: 52%

Section: Il-reinforced Adsorbents and Membranesmentioning

confidence: 99%

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Rotten Eggs Revaluated: Ionic Liquids and Deep Eutectic Solvents for Removal and Utilization of Hydrogen Sulfide

Laaksonen

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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“…The hydrogen bond strength of TBAB-based DESs is lower than that of the ChCl-based DESs, and ChCl consists of a hydroxyl group; therefore, the resulting hydrogen bonding interactions in ChCl-based DESs are more complex than those in TBAB-based DESs. Recently, supported DESs using fumed silica (supporting material) and DES as the loading substance were developed to capture H 2 S [ 126 ]. Triethylamine hydrochloride (TEAC) and cupric chloride (CuCl 2 ) were mixed at a 1:1 molar ratio to prepare the DES.…”

Section: Capture Of Acidic Gasesmentioning

confidence: 99%

Utilization of Deep Eutectic Solvents to Reduce the Release of Hazardous Gases to the Atmosphere: A Critical Review

2020

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The release of certain gases to the atmosphere is controlled in many countries owing to their negative impact on the environment and human health. These gases include carbon dioxide (CO2), sulfur oxides (SOx), nitrogen oxides (NOx), hydrogen sulfide (H2S) and ammonia (NH3). Considering the major contribution of greenhouse gases to global warming and climate change, mitigation of these gases is one of the world’s primary challenges. Nevertheless, the commercial processes used to capture these gases suffer from several drawbacks, including the use of volatile solvents, generation of hazardous byproducts, and high-energy demand. Research in green chemistry has resulted in the synthesis of potentially green solvents that are non-toxic, efficient, and environmentally friendly. Deep eutectic solvents (DESs) are novel solvents that upon wise choice of their constituents can be green and tunable with high biocompatibility, high degradability, and low cost. Consequently, the capture of toxic gases by DESs is promising and environmentally friendly and has attracted much attention during the last decade. Here, we review recent results on capture of these gases using different types of DESs. The effect of different parameters, such as chemical structure, molar ratio, temperature, and pressure, on capture efficiency is discussed.

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“…Silicon dioxide nanoparticles (SiO 2 NPs) are engineered nanomaterials that can be categorized as solid, porous, or mesoporous (Esim et al, 2019). The ease of modification of the surface chemistry of SiO 2 NPs has been widely exploited to control their interactions with biological systems used for drug delivery and to serve their purpose related to the remediation of environmental contaminants (Farrukh et al, 2014;Gomes et al, 2016;Mao et al, 2020). It has been reported that surface modification of SiO 2 NPs enhances colloidal stability, biocompatibility, and target specificity as well as improving cellular uptake, all of which are necessary components of drug delivery and bioimaging applications (Besic Gyenge et al, 2011;Kralj et al, 2012;Liberman et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Toxic Effects of Hydroxyl- and Amine-functionalized Silica Nanoparticles (SiO2 and NH2-SiO2 NPs) on Caenorhabditis elegans

Que

Hou

Ang

et al. 2020

Aerosol Air Qual. Res.

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Silica nanoparticles (SiO 2 NPs) are engineered nanomaterials (ENMs) that have a wide range of application. Increased use in manufacturing has led to concerns about their environmental impact and possible adverse health effects. We conducted a comparative toxicity assessment of bare SiO 2-NPs and amine-functionalized SiO 2 NPs (NH 2-SiO 2 NPs) utilizing the Caenorhabditis elegans (C. elegans) in vivo model. L1 nematodes were exposed to exposure concentrations of 0.25, 0.5, 2.5, and 5 mg mL-1 until the worms reached the L4 stage. The chronic lethality and lifespan assays revealed a significant decrease in survival rate and lifespan at 2.5 and 5 mg mL-1 for nematodes exposed to bare SiO 2 NPs (89% and 88%; 22 days, p < 0.05 and 14 days, p < 0.05) and at 5 mg mL-1 for the NH 2-SiO 2 NPs-exposed group (86%; 20 days, p < 0.001). Exposure to all SiO 2 NP concentrations reduced progeny production to 79-60% while exposure to 2.5 and 5 mg mL-1 of NH 2-SiO 2 NPs significantly reduced the brood size to 64-63%. Neurobehavioral toxicity was also observed in the SiO 2 NP-exposed worms, which displayed significantly decreased head thrashing for up to 92-71% and in the NH 2-SiO 2 NPs-exposed worms which showed significantly reduced head thrashing movement for up to 91-85% at concentrations of 0.5-5 mg mL-1. Body bending movements were also significantly reduced at 0.5-5 mg mL-1 SiO 2 NPs (71-34%) and 2.5-5 mg mL-1 NH 2-SiO 2 NPs (94-66%). Significant shortening of body size was also observed in nematodes exposed to 0.5-5 mg mL-1 for both SiO 2 NPs (93-81%) and NH 2-SiO 2 NPs (94-88%). Overall, bare SiO 2 NPs were observed to be more toxic due to the negatively charged surface OH groups, which may have disrupted protein homeostasis, resulting in the observed toxicities. We suggest that functionality is an important indicator in nanosafety evaluations.

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Efficient Adsorption of Hydrogen Sulfide at Room Temperature Using Fumed Silica-supported Deep Eutectic Solvents

Cited by 18 publications

References 42 publications

Rotten Eggs Revaluated: Ionic Liquids and Deep Eutectic Solvents for Removal and Utilization of Hydrogen Sulfide

Rotten Eggs Revaluated: Ionic Liquids and Deep Eutectic Solvents for Removal and Utilization of Hydrogen Sulfide

Utilization of Deep Eutectic Solvents to Reduce the Release of Hazardous Gases to the Atmosphere: A Critical Review

Toxic Effects of Hydroxyl- and Amine-functionalized Silica Nanoparticles (SiO2 and NH2-SiO2 NPs) on Caenorhabditis elegans

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