Forming Active Carbon Monoliths from H3PO4-loaded Sawdust with Addition of Peanut Shell Char

Abstract

Peanut shell char (PSC) was converted into active carbon monoliths (ACMs) by adding a binder that was easy to make. The conversion process involved adding the PSC into H3PO4-loaded sawdust, extruding the mixture, and finally heating the resulting monoliths for different times. The properties of the resulting ACMs were investigated using scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared analysis, nitrogen adsorption-desorption, X-ray diffraction, and thermogravimetric analysis. The H3PO4-loaded sawdust could be used as a binder for converting powdered PSC into well-shaped ACMs without visual cracks. The resulting ACMs maintained their monolithic shape, even in water. The ACMs showed a much higher specific surface area (SSA, 850 to 915 m 2 /g) than the PSC (105 m 2 /g). The largest SSA (915 m 2 /g) was achieved by activation for 50 min. Increasing the activation time decreased the SSA and apparent density, but only slightly impacted the carbon structure. This research might lead to valueadded conversion of bio-chars.

Phosphorus-containing carbons: Preparation, properties and utilization

“…almond shells [108], pecan shells [108][109][110][111], peanut shells [112,113], corncob [114], aguaje seeds [115], apple pulp [116,117], arundo donax cane [118], cotton stalks [119,120], hemp [95,[121][122][123],…”

Functionalization of Wood Char for Adsorption of Organic Contaminant

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