Microwave irradiation on pore morphology of coal powder

Hong, Youshi; Lin, Baiquan; Nie, Wen; Zhu, Chuanjie; Wang, Zheng; Lin, Baiquan

doi:10.1016/j.fuel.2018.04.066

Cited by 34 publications

(14 citation statements)

References 45 publications

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“…The material surfaces treated by microwave irradiation have greater cavity or porosity damage than before that material was irradiated 24 . In this study, the microwave irradiation power was set at 150 W and the duration of exposure was 15 mins, while the effects of power and exposure time of microwave irradiation on coal have been reported by other researchers 25 …”

Section: Resultsmentioning

confidence: 86%

“…24 In this study, the microwave irradiation power was set at 150 W and the duration of exposure was 15 mins, while the effects of power and exposure time of microwave irradiation on coal have been reported by other researchers. 25 The multilayers of DSSCs were fabricated based on the structure design as Figure 1. The relation between the generated current with the applied voltage seem in Figure 8.…”

Section: Resultsmentioning

confidence: 99%

“…24 The pore volume of mesopores, macropores, super macropores, and total pore volume increases with increased temperature or microwave power. 25 . Here, the microwave irradiation is used to accelerate the dye absorption on the TiO 2 .…”

Section: Novelty Statementmentioning

confidence: 99%

“…The pore size, water porosity, and moisture loss increase with rising microwave power and irradiation time 24 . The pore volume of mesopores, macropores, super macropores, and total pore volume increases with increased temperature or microwave power 25 …”

Section: Introductionmentioning

confidence: 99%

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Organic Solar Cell Performance of Musa acuminata bracts Extract by Microwave Irradiation Treatment

Madnasri

Ati

2020

Int J Energy Res

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Summary The purpose of this study is to fabricate DSSC which performs well from natural pigments by giving exposure to microwave irradiation in materials to increase pigment uptake. In this research, the microwave irradiation was applied in coating banana flower extract (Musa acuminata bract) on the electrode, to increase light absorption of anthocyanin pigment. It is expected that the device can absorb more solar energy. The banana flower extract was characterized using Ocean Optic Vis‐Nir USB 4000 to observe the optical properties. The irradiation treatment was carried out using Electrolux Microwave (EMM 2308X) at power 150 W. The DSSC samples were characterized using I‐V meter Nacrieble 101. The maximum absorbance of 1.55 a.u. is found for the mass fraction of 0.45. The microwave irradiated device has an efficiency of about 3.69×10−6%, whereas which is no microwave irradiation has a maximum efficiency of about 0.57%. It shows that microwave irradiation can improve DSSC performance. The banana flower extract is available as an alternative organic photosensitizer in the fabrication of DSSC.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Novelty Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Organic Solar Cell Performance of Musa acuminata bracts Extract by Microwave Irradiation Treatment

Madnasri

Ati

2020

Int J Energy Res

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“…Numerical simulations by Li et al and Huang et al indicated that high temperature difference induced by microwave irradiation is better for enhancing the permeability of coal seam 62,63 . Experimental studies conducted on coal by Hong et al, Li et al, and Hu et al all indicated that microwave irradiation enlarged both pore size and pore throat size and also increases both then number of pores and the coal's permeability substantially 64,65 . They concluded that MH had the potential to be applied in coalbed methane stimulation programs.…”

Section: Promotion Effects Of Microwave Heating On Coalbed Methane Desorption Compared With Conductive Heatingmentioning

confidence: 99%

Promotion effects of microwave heating on coalbed methane desorption compared with conductive heating

Wang

2021

Sci Rep

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As a clean energy resource, coalbed methane (CBM) has drawn worldwide attention. However, the CBM reservoir has strong adsorption capacity and low permeability and thus requires stimulation. As a means to stimulate coalbed methane recovery, thermal injection faces geological and economic challenges because it uses conventional conductive heating (CH) to transfer heat. Realized by the conversion of the electromagnetic energy into the thermal energy, microwave heating (MH) may be a sound stimulation method. Although previous research suggested that MH had potential as a stimulation method for coalbed methane recovery, it is not clear if MH is superior to CH for enhancing coalbed methane recovery. This paper compares the effect of MH and CH on methane desorption from coal using purpose-built experimental equipment. To compare the MH and CH experimental results, the desorption temperature for each CH desorption test was set to the maximum temperature reached in the correlative MH desorption test. The results show that although the cumulative desorbed volume (CDV) of methane under MH was less than that desorbed by CH in the initial desorption stage, the final total CDV under MH for the three different power settings was ~ 12% to ~ 21% more than that desorbed by CH at the same temperatures. CH and MH both change the sample’s microstructure but MH enlarges the pores, decreases methane adsorption, promotes methane diffusion, and improves permeability more effectively than CH. Rapid temperature rise and the changes in the coal’s microstructure caused by MH were the main reasons for its superior performance. These findings may provide reference for selecting the most appropriate type of heating for thermal injection assisted coalbed methane recovery.

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Response Characteristics of Coal Mechanical Behavior to Microwave Irradiation: A Uniaxial Compression Experimental Investigation

et al. 2022

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Microwave irradiation on pore morphology of coal powder

Cited by 34 publications

References 45 publications

Organic Solar Cell Performance of Musa acuminata bracts Extract by Microwave Irradiation Treatment

Organic Solar Cell Performance of Musa acuminata bracts Extract by Microwave Irradiation Treatment

Promotion effects of microwave heating on coalbed methane desorption compared with conductive heating

Response Characteristics of Coal Mechanical Behavior to Microwave Irradiation: A Uniaxial Compression Experimental Investigation

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