Mechanisms for selective coalescence of coals

Wheelock, T.D.; Markuszewski, R.; Fan, Chengpeng; Labuschagne, B.C.J.; Venkatadri, R.; Drzymala, Jan; Allen, Ray; Hu, Y.C.; Tyson, D.; Qiu, Xiaoping; Lessa, Alexandre Hundertmarck

doi:10.2172/6679457

Cited by 2 publications

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“…13 It was further observed that the effect of ionic strength on the recovery of a hydrophobic coal depends upon the relative hydrophobicity of the material. 14 Thus, a greater effect was observed with a strongly hydrophobic coal than with a weakly hydrophobic coal. The effect of increasing ionic strength on hydrophobic coals was believed because of the compression of the electrical double layer surrounding individual particles, while the effect on hyrophilic coals was thought because of the adsorption of hydrated cations.…”

Section: Introductionmentioning

confidence: 94%

Desulfurization and Deashing of Hazro Coal by Selective Oil Agglomeration in Various Water Mediums

Temel

Ayhan

2006

Energy Fuels

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The aim of this study was to study the effects of various water mediums on desulfurization and deashing of Hazro coal by the agglomeration method. For this purpose, three groups of agglomeration experiments were made. The effects of some parameters that markedly influence the effectiveness of selective oil agglomeration, such as solid concentration, bridging liquid concentration, and pH, on the agglomeration were investigated in the first group of experiments. The effects of different salts (NaCl, MgCl 2 , and FeCl 3 ) on the agglomeration were investigated in the second group of experiments. The effects of lake water and sea water on the agglomeration were investigated in the third group of experiments. The influences of the Mediterranean Sea water and Aegean Sea water on the removal of ash and total sulfur were found to be important.

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