Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Christopher A. Toles"'
Publikováno v:
Separation Science and Technology. 37:2369-2383
Phosphoric acid-activated/oxidized, and steam-activated and steam-activated/oxidized almond shell granular activated carbons (GACs) were investigated for their utility in removing copper ion (Cu2+) from solution in both batch and column applications
Publikováno v:
Bioresource Technology. 75:197-203
A series of steam- or carbon dioxide (CO2)-activated, granular activated carbons (GACs) were made from almond shells using six different activation or activation/oxidation conditions for each series. Unoxidized/oxidized pairs of GACs were compared am
Publikováno v:
Environmental Technology. 21:601-607
Soybean hulls, extracted with 0.1 N NaOH (BE) and modified in the presence of 0.6 M citric acid (CA), were compared to similarily treated peanut shells and the hulls of almonds, cottonseed and macadamia nut for their ability to adsorb copper ion (Cu2
Publikováno v:
Journal of Chromatography A. 879:169-175
Granular activated carbons (GACs) made from agricultural by-products were investigated as adsorbents for short path thermal desorption gas chromatographic analysis of selected polar and nonpolar organic compounds. GACs made from macadamia nut, black
Autor:
Mitchell M. Johns, Wayne E. Marshall, Lynda H. Wartelle, Andrew J. McAloon, Christopher A. Toles
Publikováno v:
Bioresource Technology. 71:87-92
A series of phosphoric-acid activated carbons were made from almond shells using six different activation or activation/oxidation methods. The carbons were compared to each other and to two commercial carbons in an effort to ascertain the relative va
Publikováno v:
Journal of Chemical Technology & Biotechnology. 74:1037-1044
Pecan shell chars were activated using steam, carbon dioxide (CO2), or phosphoric acid (H3PO4) to produce granular activated carbons (GACs). The GACs were characterized for select physical, chemical and adsorption properties. Air oxidation of the GAC
Publikováno v:
Bioresource Technology. 69:263-268
A method was developed to enhance metal ion adsorption of soybean hulls for wastewater treatment using copper ion (Cu2+) as a typical metal ion. Hulls, extracted with 0.1 N NaOH, were modified with different citric acid (CA) concentrations (0.1-1.2 M
Publikováno v:
Carbon. 37:1207-1214
Nutshells from agriculturally important nut crops (almond, black walnut, English walnut, macadamia nut and pecan) were converted to granular activated carbon using phosphoric acid activation in nitrogen or air. Surface functional groups (carbonyl, ph
Publikováno v:
Journal of Chemical Technology & Biotechnology. 72:255-263
Almond, pecan, English walnut, black walnut and macadamia nut shells were chosen as hard, lignocellulosic precursors for the production of granular activated carbons (GACs). They were activated with H3PO4 under a variety of conditions. Following acti
Publikováno v:
Journal of Chemical Technology & Biotechnology. 71:131-140
Surplus, low value agricultural by-products can be made into granular activated carbons (GACs) which are used in environmental remediation. This study characterized and evaluated GACs, made from these feedstocks, as effective removers of organics and