Fibrous active carbons from coir

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Abstract
The production and adsorptive properties of fibrous active carbons produced from coir were investigated using thermogravimetric analysis, gas adsorption, adsorption from solution, mercury porosimetry and electron microscopy. Additions of ZnCl2 to coir increased carbon yield by lowering the temperature of primary carbonisation. Apparent specific surface areas of the carbons lie in the range 435–880 m2 g‐1; the carbons are microporous and exhibit strong preferential adsorption of p‐nitro‐phenol from solution. Macropores in the carbons were identified as interfilamentary voids in the carbon fibre bundles.