A review of the production of activated carbons from agricultural residues is presented. The effects of various process parameters on the pyrolysis stage are reviewed. Influences of activating conditions, physical and chemical, on the active carbon properties are discussed. Under certain process conditions several active carbons with BET surface areas, ranging between 250 and 2410 m 2 /g and pore volumes of 0.022 and 91.4 cm 3 /g, have been produced. A comparison in characteristics and uses of activated carbons from agricultural residues with those issued from tires, and commercial carbons, have been made. A review is carried out of the reaction kinetic modelling, applied to pyrolysis of agricultural wastes and activation of their pyrolytic char.

Agricultural residues as precursors for activated carbon production—A review

Control of pore structure in carbon

The role of surface chemistry in catalysis with carbons

Activated carbon fiber: Fundamentals and applications

Structural characterization of N-containing activated carbon fibers prepared from a low softening point petroleum pitch and a melamine resin

Removal of SOx and NOx over activated carbon fibers

Catalytic oxidation of NO (400 ppm) into NO 2 was studied over active carbon fibers at room temperature to trap the unreacted NO as well as the oxidized product in forms of nitric acid or its salts to develop an oxidative removal of NO in the flue gas. The heat treatment of a particular pitch-based active carbon fiber of rather small surface area was found to enhance markedly the activity to allow the conversion of 82% in dry, 65% in 80% relative humidity (rh) and 21% in wet (100% rh) air, respectively, at 25°C by W/F of 1.0 × 10% g min mL −1 . The rate of oxidation was examined by varying humidity to reveal marked decrease of the activity above 80% rh. The strong retardation by humidity of the activity of as-received fiber was moderated by the heat treatment of the fiber at 800°C.

Oxidation of NO into NO2 over active carbon fibers

High catalytic activity of pitch-based activated carbon fibres of moderate surface area for oxidation of NO to NO2 at room temperature

In this paper, we describe the investigation of chemical vapor deposition (CVD) of carbon from benzene and cyclohexane on a particular pitch-based active carbon fiber (ACF) at different deposition temperatures as a means of controlling the pore size of ACF in order to induce true molecular sieving capability and to discuss the mechanism of carbon deposition This study showed that the specific temperature range 700−800 °C was very effective In this range, deposition of amorphous carbon was restricted to the pore wall and became saturated at the level of 11% weight increase, as further deposition stopped This treatment greatly enhanced the molecular sieve separation of CH4 from CO2 Reduction of pore size appeared to be limited by the thickness of the benzene plane, since no further carbon deposit took place when the pore could no longer accept benzene Higher temperatures allowed deposition to occur on the outer surface of ACF, which plugged the pore completely on extended reaction time Cyclohexane was

Shizuo Kawano

Papers

Removal of SOx and NOx over activated carbon fibers

Oxidation of NO into NO2 over active carbon fibers

High catalytic activity of pitch-based activated carbon fibres of moderate surface area for oxidation of NO to NO2 at room temperature

Carbon Deposition from Benzene and Cyclohexane onto Active Carbon Fiber To Control Its Pore Size

The modification of pore size in activated carbon fibers by chemical vapor deposition and its effects on molecular sieve selectivity