scholarly journals Interference Effect of Experimental Parameters on the Mercury Removal Mechanism of Biomass Char under an Oxy-Fuel Atmosphere

ACS Omega ◽  
2021 ◽  
Author(s):  
Yiming Zhu ◽  
Jingmao Wu ◽  
Hui Wang ◽  
Jiajun Wang ◽  
Haotian Shen ◽  
...  
Keyword(s):  
Interference Effect ◽  
Mercury Removal ◽  
Removal Mechanism ◽  
Experimental Parameters ◽  
Biomass Char

Molecular-level insights into mercury removal mechanism by pyrite

2018 ◽  
Vol 344 ◽  
pp. 104-112 ◽  
Author(s):  
Yingju Yang ◽  
Jing Liu ◽  
Feng Liu ◽  
Zhen Wang ◽  
Sen Miao
Keyword(s):  
Molecular Level ◽  
Mercury Removal ◽  
Removal Mechanism

Mercury removal mechanism of AC prepared by one-step activation with ZnCl2

Fuel ◽  
2019 ◽  
Vol 235 ◽  
pp. 326-335 ◽  
Author(s):  
Dongyang Hong ◽  
Jinsong Zhou ◽  
Changxing Hu ◽  
Qixing Zhou ◽  
Juezhen Mao ◽  
...  
Keyword(s):  
Mercury Removal ◽  
Removal Mechanism ◽  
One Step

The mercury removal mechanism of selenium mercury material by soda roasting

2021 ◽  
Vol 118 (5) ◽  
pp. 513
Author(s):  
Shan Zhu ◽  
Na Yang ◽  
Lin Zhang
Keyword(s):  
Activation Energy ◽  
Kinetic Equation ◽  
Dynamic Model ◽  
Raw Material ◽  
Mercury Removal ◽  
Internal Diffusion ◽  
Removal Mechanism ◽  
Roasting Process ◽  
Model Control ◽  
Control Step

In the present work, Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) were employed in the investigation of roasting mechanism, roasting dynamic model, control step of soda roasting process of selenium–mercury material. The results indicated that at the beginning of the roasting process, the control step might be interface chemical reaction for the first 30 min, and the kinetic equation might be 1−(1−R)⅓ = Kt with a activation energy E1 = 40.50 kT/mol. However, as the roasting proceeded, internal diffusion gradually became the control step for 90–135 min, and the kinetic equation might be 1−⅔R−(1−R)⅔ = Dt with a activation energy E2 = 6.75 kT/mol. The SEM analysis of the roasted selenium–mercury materials indicated that the dynamic model of soda roasting attributed to the shrinkage model was reasonable. Combined with the results obtained by SEM and EDS of the roasted selenium–mercury materials, we concluded that the addition of too much Na2CO3 might lead to the formation of molten crystalline phase in the inner of the roasted selenium–mercury materials, changing the mercury removal mechanism of the roasting process. Meanwhile, Se had a tendency to segregate at where the content of Na was relatively high. In order to study the mechanism of diffusion, Na2O2 of 9% was added to one of the samples. According to the results, we concluded that the diffusion of products (such as HgxOy) from the inside of the raw material was the control step of internal diffusion.

NH4Br-Modified Biomass Char for Mercury Removal in a Simulated Oxy-fuel Atmosphere: Mechanism Analysis by X-ray Photoelectron Spectroscopy

2020 ◽  
Vol 34 (8) ◽  
pp. 9872-9884
Author(s):  
Chang Shen ◽  
Hui Wang ◽  
Haotian Shen ◽  
Jianfei Wu ◽  
Yiming Zhu ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Mercury Removal ◽  
Mechanism Analysis ◽  
X Ray ◽  
Biomass Char

Mechanochemical bromination of unburned carbon in fly ash and its mercury removal mechanism: DFT study

2022 ◽  
Vol 423 ◽  
pp. 127198
Author(s):  
Xinze Geng ◽  
Xiaoshuo Liu ◽  
Xunlei Ding ◽  
Qiang Zhou ◽  
Tianfang Huang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Dft Study ◽  
Mercury Removal ◽  
Unburned Carbon ◽  
Removal Mechanism

scholarly journals Investigation of the mechanism of mercury removal from silver- amalgam alloy

2004 ◽  
Vol 69 (12) ◽  
pp. 1111-1120 ◽  
Author(s):  
Zoran Odanovic ◽  
M. Djurdjevic
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Thermal Treatment ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Dental Amalgam ◽  
Mercury Removal ◽  
Chemical Compositions ◽  
Removal Mechanism ◽  
Scanning Electron

An investigation of silver dental amalgam decomposition and the mercury removal mechanism was performed. The decomposition process was analyzed during thermal treatment in the temperature interval from 400 ?C to 850 ?C and for times from 0.5 to 7.5 h. The chemical compositions of the silver dental amalgam alloy and the treated alloy were tested and microstructure analysis using optical and scanning electron microscopy was carried out. The phases were identified using energy disperse electron probe microanalysis. A mechanism for the mercury removal process from silver dental amalgam alloy is suggested.

MERCURY REMOVAL BY SOME SOILS OF JAPAN FROM AQUATIC ENVIRONMENT

2010 ◽  
Vol 9 (4) ◽  
pp. 503-510 ◽  
Author(s):  
Jatindra Nath Bhakta ◽  
Yukihiro Munekage
Keyword(s):  
Aquatic Environment ◽  
Mercury Removal
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