An approach for estimating toxic releases of H2S-containing natural gas

Zhang, Jianwen; Da, Lei; Feng, Wang

doi:10.1016/j.jhazmat.2013.09.070

Cited by 38 publications

(19 citation statements)

References 17 publications

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“…In recent years, the number of major disasters, such as gas explosions, has been increasing worldwide [ 1 ]. Gas explosion accidents result in substantial direct and indirect economic loss in China every year, which could severely limit the development of the coal industry [ 2 ]. Gas explosion is a common accident in the coal mine industry that seriously threatens the state of the property and the safety of miners.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Gas Explosion Injury Based on Analysis of Rat Serum Profile by Ultra‐Performance Liquid Chromatography/Mass Spectrometry‐Based Metabonomics Techniques

Dong

Yao

et al. 2020

BioMed Research International

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Gas explosion can lead to serious global public health issues. Early period gas explosion injury (GEI) can induce a series of histopathologic and specific metabolic changes. Unfortunately, it is difficult to treat GEI thoroughly. To date, the specific molecular mechanism of GEI is still unclear. To accurately diagnose and provide comprehensive clinical intervention, we performed a global analysis of metabolic alterations involved in GEI. The physiological and behavioral indicators’ changes of rats after gas explosion were observed. These metabolic alterations were first investigated in a rat model using serum metabonomics techniques and multivariate statistical analysis. Significant heart rate (HR), mean blood pressure (mBP), and neurobehavioral index changes were observed in the GEI group after gas explosion. UPLC-MS revealed evident separated clustering between the control and GEI groups using supervised partial least squares discriminant analysis (PLS-DA). We designed an integrated metabonomics study for identifying reliable biomarkers of GEI using a time-course analysis of discriminating metabolites in this experiment. The metabonomics analysis showed alterations in a number of biomarkers (21 from serum). The meaningful biomarkers of GEI provide new insights into the pathophysiological changes and molecular mechanisms of GEI, including the disturbances in oxidative stress and neuroinflammatory reaction, as well as in metabolism of lipids, glucose, and amino acids in rats, suggesting that the process of GEI in humans is likely to be comprehensive and dynamic. Correlations between the GEI group and the biomarkers identified from the rat model will be further explored to elucidate the metabolic pathways responsible for GEI in the human body.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Gas Explosion Injury Based on Analysis of Rat Serum Profile by Ultra‐Performance Liquid Chromatography/Mass Spectrometry‐Based Metabonomics Techniques

Dong

Yao

et al. 2020

BioMed Research International

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“…For example, some natural gas fields in China , or the Middle East contained 13–18% H 2 S and 8–10% CO 2 . H 2 S is a corrosive gas that not only corrodes storage tanks and transportation pipelines but also is highly toxic, irritating, and even lethal. , CO 2 reduces the calorific value of natural gas, and as a greenhouse gas, it induces a significant greenhouse effect. , Therefore, H 2 S and CO 2 need to be separated from raw natural gas before it is used, and the permitted concentrations of CO 2 and H 2 S are less than 2% and 4 ppm, respectively . The separation and purification of raw natural gas are thus key processes.…”

Section: Introductionmentioning

confidence: 99%

High Yield of CO and Synchronous S Recovery from the Conversion of CO₂ and H₂S in Natural Gas Based on a Novel Electrochemical Reactor

Zhang

Bai

Zhang

et al. 2021

Environ. Sci. Technol.

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H2S and CO2 are the main impurities in raw natural gas, which needs to be purified before use. However, the comprehensive utilization of H2S and CO2 has been ignored. Herein, we proposed a fully resource-based method to convert toxic gas H2S and greenhouse gas CO2 synchronously into CO and elemental S by using a novel electrochemical reactor. The special designs include that, in the anodic chamber, H2S was oxidized rapidly to S based on the I–/I3 – cyclic redox system to avoid anode passivation. On the other hand, in the cathodic chamber, CO2 was rapidly and selectively reduced to CO based on a porous carbon gas diffusion electrode (GDE) modified with polytetrafluoroethylene and cobalt phthalocyanine (CoPc). A high Faraday efficiency (>95%) toward CO was achieved due to the enhanced mass transfer of CO2 on the GDE and the presence of the selective CoPc catalyst. The maximum energy efficiency of the system was more than 72.41% with a current density of over 50 mA/cm2, which was 12.5 times higher than what was previously reported on the H2S treatment system. The yields of S and CO were 24.94 mg·cm–2·h–1 and 19.93 mL·cm–2·h–1, respectively. A model analysis determined that the operation cost of the synchronous utilization of H2S and CO2 method was slightly lower than that of the single utilization of H2S in the existing natural gas purification technology. Overall, this paper provides efficient and simultaneous conversion of H2S and CO2 into S and CO.

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“…Gas explosion is a common disaster, often occurring during the process of coal mining when gas accumulated at certain concentrations meets an open flame. The gas explosion causes injuries ranging from mild to severe, even death and huge economic loss and it limits the development of the coal industry 1,2 . Due to the extensive damage over the last decades, gas explosions are regarded the “first killer” in the coal mining industry.…”

Section: Introductionmentioning

confidence: 99%

The abnormalities of coagulation and fibrinolysis in acute lung injury caused by gas explosion

Tian

Guo

Meng

et al. 2020

The Kaohsiung J of Med Scie

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Acute lung injury (ALI) caused by gas explosion is common, and warrants research on the underlying mechanisms. Specifically, the role of abnormalities of coagulation and fibrinolysis in this process has not been defined. It was hypothesized that the abnormal coagulation and fibrinolysis promoted ALI caused by gas explosion. Based on the presence of ALI, 74 cases of gas explosion injury were divided into the ALI and non‐ALI groups. The results of prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB), and platelet count (PLT) were collected within 24 hours and compared between the groups. ALI models caused by gas explosion were established in Sprague Dawley rats, and injuries were evaluated using hematoxylin and eosin (HE) staining and histopathological scoring. Moreover, the bronchoalveolar lavage fluid (BALF) was collected to examine thrombin‐antithrombin complex (TAT), tissue factor (TF), tissue factor pathway inhibitor (TFPI), and plasminogen activator inhibitor‐1 (PAI‐1) levels by enzyme‐linked immunosorbent assay (ELISA). The patients in ALI group had shorter PT and longer APTT, raised concentration of FIB and decreased number of PLT, as compared to the non‐ALI group. In ALI rats, the HE staining revealed red blood cells in alveoli and interstitial thickening within 2 hours which peaked at 72 hours. The levels of TAT/TF in the BALF increased continually until the seventh day, while the PAI‐1 was raised after 24 hours and 7 days. The TFPI was elevated after 2 hours and 24 hours, and then decreased after 72 hours. Abnormalities in coagulation and fibrinolysis in lung tissues play a role in ALI caused by gas explosion.

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An approach for estimating toxic releases of H2S-containing natural gas

Cited by 38 publications

References 17 publications

Evaluation of Gas Explosion Injury Based on Analysis of Rat Serum Profile by Ultra‐Performance Liquid Chromatography/Mass Spectrometry‐Based Metabonomics Techniques

Evaluation of Gas Explosion Injury Based on Analysis of Rat Serum Profile by Ultra‐Performance Liquid Chromatography/Mass Spectrometry‐Based Metabonomics Techniques

High Yield of CO and Synchronous S Recovery from the Conversion of CO₂ and H₂S in Natural Gas Based on a Novel Electrochemical Reactor

The abnormalities of coagulation and fibrinolysis in acute lung injury caused by gas explosion

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An approach for estimating toxic releases of H2S-containing natural gas

Cited by 38 publications

References 17 publications

Evaluation of Gas Explosion Injury Based on Analysis of Rat Serum Profile by Ultra‐Performance Liquid Chromatography/Mass Spectrometry‐Based Metabonomics Techniques

Evaluation of Gas Explosion Injury Based on Analysis of Rat Serum Profile by Ultra‐Performance Liquid Chromatography/Mass Spectrometry‐Based Metabonomics Techniques

High Yield of CO and Synchronous S Recovery from the Conversion of CO2 and H2S in Natural Gas Based on a Novel Electrochemical Reactor

The abnormalities of coagulation and fibrinolysis in acute lung injury caused by gas explosion

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High Yield of CO and Synchronous S Recovery from the Conversion of CO₂ and H₂S in Natural Gas Based on a Novel Electrochemical Reactor