Melting treatment of waste asbestos using mixture of hydrogen and oxygen produced from water electrolysis

Min, Soon Young; Maken, Sanjeev; Park, Jin Won; Gaur, Ankur; Hyun, Jang Soo

doi:10.1007/s11814-008-0055-9

Cited by 13 publications

(5 citation statements)

References 36 publications

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“…As a kind of silicate mineral fiber, pickling asbestos (PA) has a unique fiber structure, good thermal stability, heat insulation performance, and lower impurity content than traditional asbestos. 28,29 Meanwhile, the one-dimensional fiber structure and low ceramization temperature of PA help to fabricate a fiber-reinforcement network and generate a ceramic phase at low temperatures. 29,30 In view of these characteristics mentioned above of one-dimensional PA, a fiber-reinforced network was successfully constructed in BPR by the modified PA (MPA) with improved dispersion and compatibility for the first time.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhancing ablation and oxidation resistance of phenolic resin with modified pickling asbestos

Shi,

Li,

Zhang

et al. 2023

Polymer Composites

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Given the increasing requirements for ablative thermal protection materials, there is an urgent need for boron phenolic resin (BPR) composites with excellent high‐temperature strength properties as well as ablation performance to address the structural failure during the ablation process of these devices. Herein, modified pickling asbestos (MPA) was successfully incorporated into BPR to prepare MPA‐modified BPR (MPABPR). In addition, one‐dimensional MPA with improved dispersion and compatibility was used to fabricate a fiber‐reinforced network inside of BPR for the first time, which effectively increased the high‐temperature strength and ablation resistance of BPR. The results demonstrated that the high‐temperature strength of MPABPR was optimally improved by 25% compared to pure BPR. Meanwhile, when the content of MPA was only 5 wt%, the linear and mass ablation rates of MPABPR could reduce to 0.046 mm/s and 0.043 g/s, which were 34.3% and 23.2% lower than that of pure BPR, respectively. This study has the enormous potential to provide a new strategy for preparing high‐performance BPR matrix materials.Highlights The dispersion and compatibility of PA are improved by modification. MPA constructs a fiber‐reinforced network that can strengthen the carbon layer. The ablative properties of MPABPR have great advantages over the BPR. The compressive strength of carbonized MPABPR5 is 25% higher than that of BPR.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancing ablation and oxidation resistance of phenolic resin with modified pickling asbestos

Shi,

Li,

Zhang

et al. 2023

Polymer Composites

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“…As the vitrified ash product of bottom ash and its mixture with fly ashes were found to be non-hazardous, they could be considered as construction and road building material. Min et al [18] melted four types of waste asbestos containing material such as spread asbestos, plasterboard asbestos, slate asbestos, and asbestos 99 wt%, in a melting fumace at 1450-1550 • C that uses a mixture of hydrogen and oxygen (Brown's gas) as a fuel. It was further confirmed by SEM and XRD studies that all waste materials contained some crystalline structures which transformed into amorphous glassy structure on melting.…”

Section: Introductionmentioning

confidence: 99%

Influence of Brown’s Gas on Cracking Behavior of Gas-Phase Tar during Pine Wood Pyrolysis

Yang

Cui

et al. 2022

Processes

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The effect of Brown’s gas on the gas-phase tar cracking behavior, carbonic oxide (CO) production rate, and gaseous product temperature during the pine wood pyrolysis was preliminarily explored. By the application of cold trapping and gravimetric methods, it was found that Brown’s gas reduces the energy barrier of thermochemical conversion for gas-phase tar, widens the temperature range of gas-phase tar accelerated cracking, and increases the cracking rate. When the pyrolysis temperature increases by 1 °C, the average cracking rate of gas-phase tar increases from C = 4.58 g⋅Nm−3 (flow volume ratio of Brown’s gas to nitrogen, X(Brown’s gas):N2 = 0%) to C = 4.8 g⋅Nm−3 (X:N2 = 1%) and C = 5.02 g⋅Nm−3 (X:N2 = 5%). While participating in the deep cracking of gas-phase tar, Brown’s gas reduces the conversion energy barrier of the gas-phase tar to CO. The CO production rate rises from the initial 1.87% (X:N2 = 0%) to 4.22% (X:N2 = 1%) and 5.52% (X:N2 = 5%) per 1 °C of increased pyrolysis temperature. The consumption of Brown’s gas is 0.32 m3 per 1 g⋅Nm−3 of gas-phase tar cracking within the pyrolysis residence time of 30 min.

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“…The main topics of previous studies on waste materials and asbestos included asbestos content in waste sludge [5], particle emission from solid waste [6], and detoxification of asbestos in solid waste [7][8][9][10][11][12]. As far as we know, there are few or no studies on the sorting of ACMs and non-asbestos-containing materials (non-ACMs).…”

Section: Introductionmentioning

confidence: 99%

Grouping by Visual Appearance of Construction and Demolition Waste for Sorting Time Reduction with the Aim of Removing Asbestos-Containing Materials

Asakura¹,

Nakagawa²

2017

Int J Waste Resour

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Melting treatment of waste asbestos using mixture of hydrogen and oxygen produced from water electrolysis

Cited by 13 publications

References 36 publications

Enhancing ablation and oxidation resistance of phenolic resin with modified pickling asbestos

Enhancing ablation and oxidation resistance of phenolic resin with modified pickling asbestos

Influence of Brown’s Gas on Cracking Behavior of Gas-Phase Tar during Pine Wood Pyrolysis

Grouping by Visual Appearance of Construction and Demolition Waste for Sorting Time Reduction with the Aim of Removing Asbestos-Containing Materials

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