Pecan shells

In gluing, the adhesive must not saturate veneers or wood chips, but must remain in the glue line on the surface of the chips or between the pHes. The adhesives are generally of high viscosity so that they remain in the glue line. Thickeners and extenders, such as powdered pecan shells and wheat flour, are often used. 

A method of converting pecan shells into an activated carbon media has been developed. Once converted, the pecan shell activated carbon can be used for removal of organics or metals from aqneons waste streams. 

Pecan-shell-based granular activated carbon (GAC) has only been tested at bench-scale, and experiments are ongoing. The principal research institutions involved in this research are New Mexico State University and the Southern Regional Research Center, in collaboration with Lonisiana State University. 

These panels were bonded with a resin solution containing 65% PF and 35% pecan shell (PS) flour, delivering 3.25% resin solids to the furnish. 

In the past, phenolic mixes were simply a combination of the phenolic resin with a filler such as walnut shell flour or pecan shell flour. These type mixes are still used in some hardwood exterior plywood. Todays phenolic glue mixes for softwood plywood involve mixing phenolic resin with water, filler, extender and sodium hydroxide (usually 50 percent). 

Granular particles can be prepared in several ways. The toxicant may be added so as to impregnate the granule and thus be completely released only when the granule breaks up. It may be surface-coated on the granule using a volatile solvent, which evaporates from the formulation. The inert diluents can be clays or organic materials such as corncobs, pecan shells, tobacco stems, and walnut shells. 

Diluents, sometimes known as inerts or carriers, play an important role in the behavior of the formulated product. Diluents have been prepared from agricultural wastes such as walnut shells, pecan shells, tobacco stems, and corncobs from minerals such as kaolinite, attapulgite, and talc and from fossilized deposits such as diatom beds. The exact diluent used in a given preparation depends on cost, properties, and availability. Dusts require low sorptive inerts to minimize the toxicant-diluent interaction. For WPs, inerts must be high in sorptive power because they carry a large amount of toxicant especially when the toxicant is a liquid. Otherwise, the formulated product would be likely to cake badly in storage. It is required that a diluent must be truly inert. However, formulators often find that an inert diluent contains hot spots or alkalinity to inactivate part of the toxicant. In this case, urea can be used as a deactivator to counteract the undesirable effects in some dust and wettable formulations (Terriere, 1982). 

SYNS ARACHIS OIL E.YRTHNUT OIL GROUNDNUT OIL INDIGENOUS PEANUT OIL KATCHUNG OIL PECAN SHELL POWDER... 

Recently, the effectiveness of removal of bromo-dichloromethane, benzene, carbontetrachloride, 1,1,1-trichloromethane, chloroform, and 1,1-dichloromethane was studied on various laboratory-based and commercial activated carbons [123]. The pecan shell- and almond shell-based materials obtained... 

For this series of experiments, the catalyst composition was fixed at 6.0% Mo, 15.7% Fe, 0.8% Cu and 0.9% K. The catalysts using the peat and pecan-shell ACs were tested at both 310 and 320 °C, whereas the catalysts supported on wood and walnut-shell ACs were tested at 320 °C only. Other process conditions remained the same during the test periods. Only the test results at 320 °C ate discussed in this paper. 

The activity trend is not correlated with values of total BET surface area or total pore volume of the four carbon supports (Table 1). However, the peat and pecan-shell ACs, which have the lowest fraction of micropore volume (highest fraction of mesopores), exhibit higher CO conversion, while the wood-AC, which has the highest fraction of micropores (lowest fraction of mesopores), exhibits the lowest CO conversion. This suggests that the activity of catalyst is associated with the fraction of mesopores in the carbon support. 

Figure 12 shows the distribution of alcohols over catalysts having each of the four types of AC supports. Ethanol is the dominant alcohol, as in Figure 6. The order of the selectivities for the other alcohols does not change with carbon support type. Peat and pecan-shell supports lead to the largest production of ethanol, whereas catalysts with wood- or walnut-AC supports lead to larger amounts of the higher-molecular-weight alcohols.

Indigenous peanut oil Katchung oil Peanut oil Pecan shell powder Definition Refined fixed oil obtained fiom seed kernels of one or more cultivated varieties of Arachs hypogaea Properties Colorless to pale yel. liq., nutty odor, bland taste sol. in benzene, ether, chloroform, CCI oils misc. with carbon disulfide si. sol. in alcohol insol. in alkalis dens. 0.916-0.922 solid, pt. -5 C iodine no. 84-100 sapon. no. 185-195 flash pt. 540 E ref. index 1.466-1.470... 

Peanut oil. See Peanut (Arachis hypogaea) oil Peanut oil, sulfated. See Sulfated peanut oil Pearl stearic. See Stearic acid Pearl white. See Bismuth oxychloride Pear oil. See Amyl acetate Pebble lime. See Calcium oxide Pecan shell powder. See Peanut (Arachis hypogaea) oil PEDOT/PSS PEDT. See Poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonic acid)... 

Pecan shell powder. See peanut (Arachis hypogaea) oil... 

Phenol-formaldehyde resin is the most common adhesive for exterior applications due to its water resistance, low initial viscosity and its ability to bond various types of wood substrates [1], Because of its resemblance to phenolic moieties, studies on tannin have been oriented towards an alternative formulation to replace the current synthetic phenol-formaldehyde or phenol-resorcinol-formaldehyde adhesives [2-4], A few suitable alternative natural resources such as oil palm shell, pecan shell nut, lignin, starch, rice bran and tannin are also available for this purpose. Among these materials, tannins represent the best immediate substitute for phenol in wood adhesive production [1],... 

Prod, industrially by hydrol. of wood. Found mainly in the form of Xylan or as glycosides. Present in wood (maple and cherry), straw, corncobs, cottonseed hulls and pecan shells. Sweetener. Inexpensive starting material for synthesis. Diagnostic aid (intestinal function determination). 

Cheng, H.N., Wartelle, L.H., Klasson, K.T., and Edwards, J.C. Solid-state NMR and ESR studies of activated carbons produced from pecan shells. Carbon 2010 48 2455-2469. 

Dastgheib SA, Rockstraw DA. A model for the adsorption of single metal ion solutes in aqueous solution onto activated carbon produced from pecan shells. Carbon 2002 40(11) 1843-1851. 

Synonyms Arachis hypogaea Arachis oil Earthnut oil Groundnut oil Indigenous peanut oil Katchung oil Peanut oil Pecan shell powder Definition Refned fixed oil obtained from seed kernels of one or more cultivated varieties of Arachis hypogaea... 

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