国立研究開発法人 国際農林水産業研究センター | JIRCAS

Evaluation of Quantitative Determination of Dissolved Organic Matter Adsorption Processes Using Charcoals and Activated Carbon

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

In this study the processes of dissolved organic matter (DOM) adsorption by charcoals and activated carbon were quantitatively evaluated by the adsorption rate model. Five types of charcoal and a commercial granular activated carbon (GAC) were used to remove DOM eluted from rice-straw in an adsorption test. The adsorption rate model was considered as the adsorption process in the early steps which showed significant adsorption changes. The results of the adsorption test indicated that the DOM adsorption rate and volume treated by charcoals carbonized at high temperature (group-2) showed significantly higher levels than those of charcoals carbonized at low temperature (group-1). Although group-2 adsorbed less DOM than GAC after 6 hours, the adsorption rate and adsorbed volume of group-2 were greater than those of GAC under 6 hours. The results of the evaluation by the adsorption rate model showed that the calculated value agreed well with the measurements obtained from the adsorption test. It was suggested that DOM could move to the adsorption surface of group-2 more rapidly than that of the GAC in the early adsorption process. In the latter process the volume of DOM adsorption from sample water treated by group-2 was exceeded by that of the GAC which has a large specific surface area. The DOM adsorption processes depended on the specific surface area of charcoals/GAC as well as the DOM transfer rate and desorption.

刊行年月2008-01-01
作成者MIURA AsaSHIRATANI EisakuYOSHINAGA IkuoHITOMI TadayoshiHAMADA KojiTAKAKI Kyoji
著者キーワード

adsorption rate equation

specific surface area

transfer rate

公開者Japan International Research Center for Agricultural Sciences
データ作成日2008-01-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
42
1
開始ページ49
終了ページ56
DOI10.6090/jarq.42.49
権利Japan International Research Center for Agricultural Sciences
言語eng