Peat, dehydration

Carefully extracted samples of peat were slowly dehydrated in a series of alcohol solutions and then embedded in paraffin. After embedding, thin-sections (15 microns in thickness) were cut from these samples with a sliding microtome and mounted in Canada Balsam. Details of the procedure for the embedding and sectioning of peats have previously been described by Cohen.(2,3). 

Electric endosmose is of technical importance for the dehydration of organic, finely suspended substances containing1 very much water, for example, the drying of peat, according,... 

The main point of this simple study is that, in cases such as peat/coal and aquatic sapropel/ paper shale accumulations, ultimate geoporphyrin (i.e. DPEP-series) precursors beside chlorophyll-a need to be considered. In order to mold bacteriochl orophyl 1-a into current modified Treib s scheme diagenesis (3-5) only the removal of the 3,4-dihydro and 2-acetyl features are required. That is, an aromatization and reduction/dehydration. 

Activated charcoal is a finely divided form of amorphous carbon and is manufactured from organic materials (e.g. peat, wood) by heating in the presence of reagents that promote both oxidation and dehydration. Activated charcoal possesses a pore structure with a large internal surface area microporous materials exhibit pores <2nm wide, macroporous refers to activated charcoals with a pore size >50nm, and mesoporous materials fall in between these extremes. The largest internal surface areas are found for microporous materials (>700m g ). The ability of the hydrophobic surface to adsorb small molecules is the key to the widespread applications of activated charcoal. (Comparisons should be made with the porous structures and applications of zeolites see Sections 13.9 and 26.6.)... 

The volumetric shrinkage of peat increases up to a maximum and then remains constant, the volume being reduced almost to the point of complete dehydration. The amount of shrinkage that can occur generally ranges between 10 and 75% of the original volume of the peat, and it can involve reductions in void ratio from over 12 down to about 2. 

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