アロフェン, フェリハイドライト, 微粒炭, 活性炭の腐植酸吸着特性の比較

Translated title of the contribution: Comparison of Humic Acid Adsorption on Allophane, Ferrihydrite, Micro Charcoal and Activated Charcoal

宇智田 奈津代, 平舘 俊太郎, 井上 克弘

Research output: Contribution to journalArticlepeer-review

Abstract

We conducted experiments for the humic acid adsorption by allophane, ferrihydrite, activated charcoal and micro charcoal to clarify the mechanisms involved in the accumulation of humic substances in Andisols. Adsorption envelopes indicated that: 1) the adsorption patterns of humic acid on these materials from equilibrium pH 4 to 6 showed that the amount of humic acid sorbed was the largest for allophane folowed by activated charcoal, ferrihydrite and micro charcoal; 2) there were many differences between activated charcoal and micro charcoal in regards to their humic acid adsorption properties; and 3) many researches indicated that the amount of active Al was much larger than that of micro charcoal in Andisols. From these results, we concluded that active Al plays an important role in the accumulation of humic substances in Andisols, as indicated by Kobo and Oba, Wada and Higashi, Shoji, and Inoue and Higashi.
Translated title of the contributionComparison of Humic Acid Adsorption on Allophane, Ferrihydrite, Micro Charcoal and Activated Charcoal
Original languageJapanese
Pages (from-to)1-8
Number of pages8
Journal日本土壌肥料学雑誌 = Japanese journal of soil science and plant nutrition
Volume71
Issue number1
Publication statusPublished - Feb 5 2000

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