The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals

Andisol is a soil with high P adsorption, this is due to high content in reactive amorphous materials. The present study was conducted to compare humic acid and silicate acid in blocking the P adsorption on amorphous minerals. The results indicated that the old and young formation of parent material...

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Main Authors: Hanudin, Eko, S.T., Sukmawati, Radjagukguk, Bostang, Widya Yuwono, Nasih
格式: Article PeerReviewed
語言:English
出版: Elsevier, ScienceDirect 2014
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https://repository.ugm.ac.id/37595/
http://www.sciencedirect.com/science/article/pii/S1878029614000528
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spelling id-ugm-repo.375952014-07-23T06:24:54Z https://repository.ugm.ac.id/37595/ The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals Hanudin, Eko S.T., Sukmawati Radjagukguk, Bostang Widya Yuwono, Nasih Agricultural Land Management Agronomy Andisol is a soil with high P adsorption, this is due to high content in reactive amorphous materials. The present study was conducted to compare humic acid and silicate acid in blocking the P adsorption on amorphous minerals. The results indicated that the old and young formation of parent materials were not different in reactivity of the amorphous minerals and able to adsorb P > 98 % and fit with the Freundlich equation. Application of humic acid and silicate acid with rate of 100 mg/l, respectively, was not effective in decreasing P adsorption. However, silicate acid was a little bit better than humic acid in decreasing P adsorption, in case of pH 4 either pH 6. Infrared spectral characteristics of the amorphous material indicated that the absorption bands of the first region appeared at a range of 3440-3510 cm-1, the band due to stretching vibration of hydroxyl (OH) groups either as structural OH or as adsorbed water. The absorption bands of HOH from adsorbed water appeared ranging from 1639-1655 cm-1. The maximum adsorption bands were observed appeared ranging from 910-972 cm-1, the bands are due stretching vibration of Si-O-Al for allophane with low Si/Al ratio, whereas allophane with high Si/Al ratio appeared at 1033 - 1030 cm-1. In general, the addition of humic acid and silicate acid caused the peak OH, Si-O-Al and Si-O adsorption move to the right and increase the adsorption intensity. Elsevier, ScienceDirect 2014 Article PeerReviewed application/pdf en https://repository.ugm.ac.id/37595/1/procidia.pdf Hanudin, Eko and S.T., Sukmawati and Radjagukguk, Bostang and Widya Yuwono, Nasih (2014) The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals. PROCEDIA ENVIRONMENTAL SCIENCES. ISSN 1878-0296 http://www.sciencedirect.com/science/article/pii/S1878029614000528
institution Universitas Gadjah Mada
building UGM Library
country Indonesia
collection Repository Civitas UGM
language English
topic Agricultural Land Management
Agronomy
spellingShingle Agricultural Land Management
Agronomy
Hanudin, Eko
S.T., Sukmawati
Radjagukguk, Bostang
Widya Yuwono, Nasih
The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals
description Andisol is a soil with high P adsorption, this is due to high content in reactive amorphous materials. The present study was conducted to compare humic acid and silicate acid in blocking the P adsorption on amorphous minerals. The results indicated that the old and young formation of parent materials were not different in reactivity of the amorphous minerals and able to adsorb P > 98 % and fit with the Freundlich equation. Application of humic acid and silicate acid with rate of 100 mg/l, respectively, was not effective in decreasing P adsorption. However, silicate acid was a little bit better than humic acid in decreasing P adsorption, in case of pH 4 either pH 6. Infrared spectral characteristics of the amorphous material indicated that the absorption bands of the first region appeared at a range of 3440-3510 cm-1, the band due to stretching vibration of hydroxyl (OH) groups either as structural OH or as adsorbed water. The absorption bands of HOH from adsorbed water appeared ranging from 1639-1655 cm-1. The maximum adsorption bands were observed appeared ranging from 910-972 cm-1, the bands are due stretching vibration of Si-O-Al for allophane with low Si/Al ratio, whereas allophane with high Si/Al ratio appeared at 1033 - 1030 cm-1. In general, the addition of humic acid and silicate acid caused the peak OH, Si-O-Al and Si-O adsorption move to the right and increase the adsorption intensity.
format Article
PeerReviewed
author Hanudin, Eko
S.T., Sukmawati
Radjagukguk, Bostang
Widya Yuwono, Nasih
author_facet Hanudin, Eko
S.T., Sukmawati
Radjagukguk, Bostang
Widya Yuwono, Nasih
author_sort Hanudin, Eko
title The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals
title_short The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals
title_full The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals
title_fullStr The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals
title_full_unstemmed The Effect of Humic Acid and Silicic Acid on P Adsorption by Amorphous Minerals
title_sort effect of humic acid and silicic acid on p adsorption by amorphous minerals
publisher Elsevier, ScienceDirect
publishDate 2014
url https://repository.ugm.ac.id/37595/1/procidia.pdf
https://repository.ugm.ac.id/37595/
http://www.sciencedirect.com/science/article/pii/S1878029614000528
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