籾殻炭の基礎的研究(1) : 籾殻炭の基本構造とホルムアルデヒド吸着能(物質生命化学科)

Abstract

Three types of the rice hull charcoal were produced in order to examine the characteristic as an adsorbent. (1) The sample which carbonized the untreated rice hull (the untreated rice hull charcoal), (2) The carbonized sample it dealt with the rice hull by fermentation germ (the fermentation germ treatment rice hull charcoal) and (3) The sample dissolved the inorganic component which is included in the untreated rice hull charcoal in HF solution (the HF treatment rice hull charcoal). The specific surface area increased with an increase in carbonization temperature (300～600℃),and by the treatment (fermentation germ and HF solution). Adsorbed amount and adsorption rate of the formaldehyde were remarkably improved by HF treatment. As a result of removing silica in the cuticle and inorganic component in the inner fibrous part, it seemed to newly form pore (e.g., micro pore) and adsorption site (e.g., polarity functional groups) which show the excellent gas absorption characteristic